The 4th LISAT Symposium Program Book

The 4th International Symposium on LISAT 2017cluster of anthropogenic disaster in some areas. Through Local Moran Index, wefound that environmental damage in one location has a significant impact on thecondition of its surrounding area.ENV 083Analysis Of Critical Land Effect In Bengawan Solo Watershed To TheSedimentation In Gajah Mungkur Reservoir. Abdi Sukmono*, Bambang Sudarsono,Aziz Anjar Santoso ( Department of Geodetic Engineering, Faculty of Engineering,Diponegoro University; [email protected])Gajah Mungkur Reservoir located in Wonogiri Regency Central Java Province. Thisis a multipurpose reservoir with an area of approximately 8,800 ha. This reservoircan irrigate 23.600 ha of rice fields in Sukoharjo, Klaten, Karanganyar and Sragendistricts. The amount of sedimentation increased rapidly resulting in degradation ofwater quality of Gajah Mungkur Reservoir. High sedimentation can be shown fromthe high value of Total Suspended Solid (TSS) in the waters. TSS is a solid material,including organic and inorganic matter suspended in aquatic area. TSS Dynamics inthe waters of Gajah Mungkur Reservoir cannot be separated from the dynamics ofvegetation density change in Watershed area (DAS).Total Suspended Solid (TSS)concentration can be identified using Total suspended Solid (TSS) algorithm inLandsat 8 Satellite imagery. This research was monitored by TSS development in2013, 2015, and 2017 which then compared with TSS level in the field. Beside that,land criticalin several sub watersheds were calculated using overlay. Both are thenanalyzed by multitemporal comparison method. Based on the results obtained themost suitable algorithm in the waters of Gajah Mungkur Reservoir is TSS SyarifBudhiman algorithm with 92% regression coefficient. The concentration of TSS inthe waters of Gajah Mungkur Reservoir in the period of 2013-2017 has increased.Its very related with critical land increasion in several sub-watersheds. Critical landof several sub watersheds has an effect on the content of TSS in Gajah reservoir atestuary of the sub-watershed.ENV 084GIS-based Logistic Regression for Landslide Susceptibility Mapping in TakengonArea, Aceh, Indonesia. Pamela, Imam A. Sadisun, Yukni Arifianti*, Rendy D.K.(Geological Agency; [email protected])A GIS method was proposed by using multivariate statistical approach, referred toas the logistic regression model was assigned to create landslide susceptibility mapof Takengon. On July 2, 2013, Takengon area was having severe damage due to anearthquake induced landslides. Most of the landslides occur along the Bireuen-Takengon road in the vicinity of Gayo highlands area. This logistic regression modelwas applied in order to indicate the relationship between a response/dependentvariable in binary or dichotomous data form and a set of independent variables ininterval or categorical scale data. The 251 landslides in Takengon area were takenas the dependent variable. The independent variables included slope degree, slopeaspect, lithology, land cover, elevation, rainfall, lineament, peak groundacceleration, curvature, flow direction, distance to river and roads. Based on AUC Program Book 99

The 4th International Symposium on LISAT 2017the highest factor controlling the landslide is slope, elevation, aspect, andlineament, respectively. Validation process of AUC shows prediction rate is 0.79 andAUC of the success rate is 0.843. This result showed the selective factors/variablesand logistic regression method as a good model for assessing landslidesusceptibility. The landslide susceptibility map of Takengon shows the probabilitieswhich represent relative degrees of susceptibilty for landslide proneness inTakengon area.ENV 085Influence of cold surge and the MJO on heavy rainfall over Indonesia during eastasian winter monsoon. Ray Restu Fauzi, Rahmat Hidayat* (Bogor AgriculturalUniversity; [email protected])The influence of cold surge on rainfall over Indonesia during Asian winter monsoonwas investigated. In this study, the cold surge was defined as the area-averagednortherly wind exceeding 8 m/s over 1050E–1150E, 50S–Equator based on surfacewind data. The results showed that during15 years (2000-2015), we observed 362cold surge events, 186 MJO events, and 113 cold surge events that associated withMJO events. By conducting composite analysis of surface wind, moisture transportand rainfall, we showed that the cold surge-MJO combined pattern produced muchgreater rainfall over Indonesia and surrounding area than either MJO or cold surgealone. The cold surge and the MJO events brought water vapour from the northPacific and the Indian Oceans to Indonesian region through moisture transportmechanisms. Such processes led to increase rainfall over the Indonesian region upto 70-80%.ENV 086Influence of La Niña and La Niña Modoki on Indonesia Rainfall Variability. RahmatHidayat*, Maharani Dwi Juniarti, Ummu Ma’rufah (Bogor Agricultural University;[email protected])Analysis of the influence of La Niña and La Niña Modoki on Indonesia rainfallvariability was conducted. Both La Niña and La Niña Modoki affect rainfall variabilitybut the commonalities and contrasts of their influences on Indonesia rainfall havenot been fully investigated. La Niña Modoki is indicated by cooling Seas SurfaceTemperatures (SSTs) in the central Pacific and warming SSTs in the western andeastern equatorial Pacific. Such SSTs pattern influences rainfall variability over manyregions including Indonesia. Generally, Nino 3.4 index and Indonesia rainfall issignificantly correlated (r = -0.95). In addition, by conducting composite analysis ofSSTs, surface wind, walker circulation and rainfall, it is shown that during La Niña(La Niña Modoki) events significant positive rainfall anomaly was observed insouthern part of Indonesia in DJF (MAM) season. Different influence of both La Niñaand La Niña Modoki on Indonesia rainfall variability is likely caused by Walker Program Book 100

The 4th International Symposium on LISAT 2017circulation pattern. La Niña Modoki events showed strong (weak) convergence inthe eastern (western) Pacific.ENV 087Fine-Tuning Satellite-Based Rainfall Estimates. Hastuadi Harsa*, Agus Buono, andRahmat Hidayat (Bogor Agricultural University; [email protected])Satellite-based rainfall estimates are products of image transformation. The dataare sensitive to the selected transformation algorithms and also the number ofground-based rainfall data as the guidance on the algorithms. Therefore, it isvaluable to have the information about the characteristics of satellite estimatesdata and subsequent enhancement procedure needed if they produce data whichare far different from that of ground-based data. In this paper we present theanalysis of Climate Hazard Infra-Red with Stations (CHIRPS), one of satelliteestimates products, in comparison with the ground-based rainfall observation. Wealso propose the utilization of Quantile Mapping (QM) procedure to fine-tune thesatellite estimates data so that they are able to represent data that are more similarwith actual records by the ground observation. The results show that the satelliteestimates have slight different data from the observation data and QM hadsuccessfully reduced the bias of satellite-based rainfall data.ENV 088Above-ground biomass and Carbon Stock of Ciletuh Mangrove Forest, West Java,Indonesia. Cecep Kusmana*, Topik Hidayat, Widya Fauziyyah Hikmah (BogorAgricultural University; [email protected])Mangrove forest is a unique ecosystem that plays important roles to climate changecontrol, as carbon sink and CO2 absorbing from the atmosphere. This research wasaimed to estimate the potential of above-ground biomass and carbon stocks ofCiletuh mangrove forest, West Java, Indonesia. Mangrove forest area andoccupation of dominant species were mapped using Geographical InformationSystem, meanwhile species composition and forest structure was sampled using198 plots (20 m x 20 m each) systematically constructed of studied forest area.Vegetation analysis data were used to estimate the potential of above-groundbiomass and carbon stocks. Above-ground biomass and carbon stock of mangrovespecies was estimated using allometric models that already available. The resultsshowed that mangrove forest in Ciletuh covered an area amounted to 8 hadominated by Avicennia officinalis, A. marina, Bruguiera cylindrica, B. gymnorrhiza,Lumnitzera racemosa, Hibiscus tiliaceus, Aegiceras corniculatum, Excoecariaagallocha, Rhizophora apiculata, and R. mucronata. In addition, there were 18 treemangrove species from 14 genera of 11 families with average individual density andbasal area were 9 ind ha-1 and 46.09 m2 ha-1, respectively. The potential of above-ground biomass of Ciletuh mangrove forest was 31.70 t ha-1 and it’s carbon stockwas 14.90 t C ha-1. The highest potential of above-ground biomass and carbon stockwas on A. officinalis (54% of the total) and the lowest on Premna serratifolia (0.01%of the total. Program Book 101

The 4th International Symposium on LISAT 2017ENV 089Fluxes of Heat And Mass From Oil Palm Plantation In Jambi Indonesia AsInfluenced By Turbulence And Atmospheric Stability. Tania June*, ChristianStiegler, Irfi Panrepi, Rahmat Fauzi, Alexander Knohl (Bogor Agricultural University;[email protected])Remote sensing data have shown that oil palm plantations are expanding vastly inJambi, and we hypothesize that this expansion will result in altered surfaceroughness and turbulence characterisctics, which may influence exchanges of heatand mass. Micrometeorology and vertical profile measurements (radiation, airtemperature, humidity, windspeed, wind direction and air pressure, wereconducted continuously inside the boundary layer of oil palm canopy for the period2014–2015. The plantation, PTPN VI Jambi, has an area of 2025 ha and the oil palmwere 13-15 years, with canopy height of around 13 meters. The exact location ofthe micrometeorology tower is at S01°41'35.0'', E 103°23'29.0''. We also havedataset obtained from a much younger oil palm plantation as a comparison (2.5years, 2.5 m height). Analysis of surface roughness and turbulence characteristicseffect on sensible heat and CO2 fluxes were conducted by looking at theatmospheric characteristics profiles and gradient (windspeed, and temperature),surface roughness (roughness length zo and zero plane displacement, d),turbulence transfer coefficient K, mean eddy velocities/ friction velocity u*. Sensibleheat and CO2 fluxes. Fluxes of heat were calculated using profile similarity methodstaking into account atmospheric stability, neutral, unstable and inversion/stable bycalculating Richardson Number Ri and generalized stability factor . Fluxes of CO2were measured using Eddy Correlation system. We found that roughnessparameters, roughness length zo and zero plane displacement d, and frictionvelocity U* directly affect turbulence in oil palm canopy and hence fluxes of heatand CO2. Our data showed that these parameters are affected by canopy height,wind speed and atmospheric stability. We also found, that there is a negative trendof the zero plane displacement d towards air temperature above the oil palmcanopy, indicating the effect of plant volume in reducing air temperature. Weproposed a further work in looking a relation between zero plane displacement dwith remote sensing vegetation index NDVI for scaling up this point based analysis.Research on surface roughness, turbulence, heat and CO2 fluxes on vegetatedsurface in particular oil palm is very limited. Therefore it would add valuableinformation needed to support analysis of the effect of land use change on energy,mass fluxes and microclimate. Program Book 102

The 4th International Symposium on LISAT 2017MARINE AND FISHERIES (MAR)MAR-002A Remote Sensing System for Fishery Household (FH) Database and CultivationAreas In Indramayu Regency to Develop Shrimp And Milkfish Farming. RitaRostika*, Iskandar, Noir P. Purba, Lantun Paradhita Dewanti, and Izza Mahdiana(Fishery and Marine Sciences Faculty, Universitas Padjadjaran;[email protected])With a coastline length of 114 km, the utilization of the coastline areas is greatlypotential for especially shrimp and milkfish cultivations which have a highereconomic value. However, appropriate development strategies are highly required.The purpose of this research is to examine the existing conditions and organizeintegrated information for RTP as well as the areas utilized for shrimp and milkfishcultivations, especially in coastal areas. The methods used include a analysis fromLandsat 8 imaginery, field survey, and interviews with various sources. This researchis conducted in June-November 2015. Data from remote sensing then to digitize andas mark point to survey about area of cultivitaion. The results show that thedistributions of RTP data cover Windu and Vaname shrimp polycultures by 1,727RTP, milkfish by 1,551 RTP, Vaname shrimp by 2,953 RTP, and Windu Shrimp by 88RTP. The area which may be utilized as ponds is 9,854.1 ha. The area for milkfishponds is 12,065.08 ha, while the digitation result is 10,801.92 ha. It shows thatIndramayu coastal areas still have numerous and various potentials which may beutilized for shrimp and milkfish cultivations.MAR-003Distribution and diversity of seaweed in the Maspari Island waters, SouthSumatera. Rozirwan*, Muhammad Hendri and Iskhaq Iskandar (Department ofMarine Science, Faculty of Mathematic and Natural Science, University ofSriwijaya, South Sumatra, Indonesia; [email protected])In ecology, seaweeds are feeding ground, spawning ground and nursery ground forvarious marine biota. The distribution and diversity of seaweed are affected bymany environmental parameters, such as temperature, salinity, current, pH,dissolved oxygen and nutrient. This study is designed to evaluate possiblerelationships between the environmental parameters and distribution and diversityof seaweed in the Maspari Island waters, South Sumatera. The principle componentanalysis (PCA) was used to evaluate the correlation between distribution anddiversity of seaweed and the environmental parameters. It was found that therewere 23 types of seaweed, which were categorized into 3 groups, namely red algae,green algae and brown algae. Further analysis revealed that the green algae groupis the dominant group, which accounts for about 69.48% of the total distribution.Meanwhile, the red and brown algae group account for about 24.7 of the totaldistribution, respectively. However, the biodiversity index and the domination ofspecies in the Maspari Island waters are low. In addition, based on the analysis of Program Book 103

The 4th International Symposium on LISAT 2017the environmental parameters in the Maspari Island, it is shown that the nutrientconcentration is very high but the water quality still allows the seaweed to grow.Finally, the results from the PCA analysis showed that the environmentalparameters representing the seaweed habitat are salinity, ocean currents, dissolvedoxygen waters and brightness.MAR-004Spatial Pattern of Chlorophyll-a Concentration in The Waters Around CimanukEstuary. Farrah Intansari*, Eko Kusratmoko, Iqbal Putut Ash Shidiq (Departmentof Marine Science, Department of Geography, FMIPA Universitas Indonesia,Kampus UI Depok; [email protected])The damming of river would impact river flow discharges fluctuations which couldchange nutrients entry into estuatries then affects chlorophyll-a concentration (Chl-a). The purpose of this study is to investigate the effect of Jatigede Dam inSumedang District’s function to the condition of Chl-a concentration in the watersaround Cimanuk Estuary. In this study, we used a multi-temporal Landsat 8 beforeand after the functioning of the Jatigede Dam to identify Chl-a concentration. Chl-awill identify by using algorithm Wibowo et.al (1993). This research area was dividedinto 3 sections, western Cimanuk Estuary region, eastern Cimanuk Estuary region,and the waters between the two estuary. Spatial analysis that used in this study isTrend Surface Analysis. In general, the results indicate that distribution of Chl-a 0.5-1 mg/m3 tend to decrease in the water nearby to land after the functioning of theJatigede Dam. Furthermore, this study will also discuss the changes of spatial andtemporal variations related to river flow and oceanographic factors such as seasurface current.MAR-005Cultivation of Seaweed Gracilaria sp Using Vertikultur Methods in Coast ofKalagian Island Lampung. Muhammad Hendri*, Rozirwan (Marine ScienceDepartment, Faculty Math and Natural Science, Sriwijaya University, KampusIndralaya, Kabupaten Ogan Ilir, Sumatera Selatan;[email protected])The damming of river would impact river flow discharges fluctuations which couldchange nutrients entry into estuatries then affects chlorophyll-a concentration (Chl-a). The purpose of this study is to investigate the effect of Jatigede Dam inSumedang District’s function to the condition of Chl-a concentration in the watersaround Cimanuk Estuary. In this study, we used a multi-temporal Landsat 8 beforeand after the functioning of the Jatigede Dam to identify Chl-a concentration. Chl-awill identify by using algorithm Wibowo et.al (1993). This research area was dividedinto 3 sections, western Cimanuk Estuary region, eastern Cimanuk Estuary region,and the waters between the two estuary. Spatial analysis that used in this study isTrend Surface Analysis. In general, the results indicate that distribution of Chl-a 0.5- Program Book 104

The 4th International Symposium on LISAT 20171 mg/m3 tend to decrease in the water nearby to land after the functioning of theJatigede Dam. Furthermore, this study will also discuss the changes of spatial andtemporal variations related to river flow and oceanographic factors such as seasurface current.MAR-006Observing and Mapping Marine Mammal Population by using Small VerticalTake-off and Landing (VTOL) Unmanned Aerial System. Beginer Subhan*,Dondy Arafat, Prakas Santoso, Bagus Suryo Kusumo, Koreri Awak, DennyKhaerudi, Hero Ohoiulun, and Hawis Madduppa. (Department of MarineScience and Technology Bogor Agricultural University;[email protected])The population of dolphins are widely distributed across Indonesia, and they areabundant but the overall population is unknown. In addition, many dolphinpopulations have been decreased due to several factors, including fisheriesactivities and disturbed habitat. Dolphins also used as attraction for tourism in someplaces, which could interfere with the existence of dolphins. Dolphin populationobservation is important to be conducted, and so far many studies using visualcensus method, which may lead under estimation. Therefore, this study wasconducted by using small vertical take-off and landing (VTOL) Unmanned AerialSystem (AUS) to observe and mapping dolphin population, in three locations acrossIndonesia (Liang Beach, Maluku, Kei Islands and Sepa Island Kepulauan Seribu). Theresults found that the small vertical take-off and landing (VTOL) Unmanned AerialSystem (AUS) can record the existence of dolphins and calf in the waters. Some ofthe observed behaviors are aerial, traveling and feeding. This study suggests smallvertical take-off and landing (VTOL) Unmanned Aerial System (AUS) can improveaccuracy for marine mammals population calculation and mapping, which in turncan support the management and conservation of this important marine mammals.MAR-007Variety Fatty Acid Content of Nannochloropsis oculata. Setya Indra PadmaPutri, Mujizat Kawaroe*, Tri Prartono. (Bogor Agricultural University;[email protected])Mineral element, like as magnesium and iron have function in cell metabolismsystem and metabolism product of microalgae. Magnesium and iron addition withlevel concentration to knowed this effect to fatty acid content and composition ofN. oculata. Located of research at Stasiun Lapang Kelautan, Pelabuhan RatuSukabumi, West Jawa, coordinate South latitude 6˚58’-7˚25’ and East longitude106˚18’-106˚32’. Research used 3 treatments concentration included control (noaddition magnesium and iron concentration), magnesium and iron. Levelmagnesium concentration used 4.18x10-3 mg/l, 1.25x10-2 mg/l and 2.08x10-2mg/l, and iron concentration used 3.23x10-3 mg/l, 9.68x10-3 mg/l and 1.61x10-2mg/l. Analyses fatty acid used gas chromatography (GC). Highest fatty acid as Program Book 105

The 4th International Symposium on LISAT 201733.53% at 1.25x10-2 mg/l magnesium concentration and 39.44% at ironconcentration, respectively and higher than fatty acid control as 28.54%. Highestfatty acid composition of N. oculata product i.e. palmatic acid (C16:0), palmitoleicacid (C16:1), oleic aicd (C18:1), myristic acid (C14:0) and linoleic acid (C18:2) at1.25x10-2 mg/l magnesium concentration and 9.68x10-3 mg/l iron concentration.This showed that higher magnesium and iron concentration did not higher productof fatty acid and it was suggest they concentration higher than cell requirement ofmicroalgae.MAR-008Effects of Oceanographic Factors on Spatial Distribution of Whale Shark inCendrawasih Bay National Park, West Papua. Maulida Ranintyari*, Sunarto,Mega L. Syamsuddin, Sri Astuty. (Fisheries and Marine Science Faculty,Padjadjaran University; [email protected])This study aims to analyze how the oceanographic factors affect the spatialdistribution of whale sharks in Cendrawasih Bay National Park. The data consistedof the whale shark monitoring data in TNTC taken by WWF-Indonesia, and imagedata of sea surface temperature (SST) and chlorophyll-a concentration from Aqua-MODIS, and also sea surface current from Aviso Data. Analyses were conducted forthe period of January 2012 until March 2015. The method used in this research isdescriptive with the quantitative approach using Generalized Addictive Model(GAM) analysis. The GAM result indicated that sea surface current was better thanthe other environtment (SST and chlorophyll-a consentration) as an oceanographicpredictor of whale shark appearance. High probabilities of whale shark’sappearance were observed for sea surface currents velocities between 0,30-0,60m/s, for SST ranged from 30,50-31,80 ºC, and for chlorophyll-a consentrationsranged from 0,20-0,40 mg/m³. Whale sharks are a leading species in CendrawasihBay due to its benign nature and its regular appearance. Recently, whale sharks arevulnerable to scarcity and even extinction. One of the efforts to maintain theexistence of whale shark population is by knowing its spatial distribution. This studyaims to analyze how the oceanographic factors affect the spatial distribution ofwhale sharks in Cendrawasih Bay National Park. The method used in this researchis descriptive with the quantitative approach using Generalized Addictive Model(GAM) analysis. The data consisted of the whale shark monitoring data in TNTCtaken by WWF-Indonesia, and image data of sea surface temperature (SST) andchlorophyll-a concentration from Aqua-MODIS, and also sea surface current fromAviso. Analyses were conducted for the period of January 2012 until March 2015.The GAM result indicated that sea surface current was better than the otherenvirontment (SST and chlorophyll-a consentration) as an oceanographic predictorof whale shark appearance. High probabilities of whale shark’s to appearance in thesurface were observed for sea surface currents velocities between 0,30-0,60 m/s, for SST ranged from 30,50-31,80 ºC, and for chlorophyll-a consentrationsranged from 0,20-0,40 mg/m³. Program Book 106

The 4th International Symposium on LISAT 2017MAR-009Zn and Cu Biosorption by Nannochloropsis oculata. Herlina Adelina Meria UliSagala, Mujizat Kawaroe*, Tri Prartono (Bogor Agricultural University;[email protected])Zn and Cu are heavy metal found in waters and an essential metal for microalgae asnutrient. In high concentration, micronutrient will be inhibited microalgaemetabolism system. This study aimed was to test the effect of Zn and Cu to thebiosorption of N.oculata. This research was conducted at Algae Laboratory ofMarine Station, Bogor Agricultural University (IPB), Pelabuhanratu, Sukabumi, WestJava (6°58´- 7°25´ S dan 106°88´- 106°32´E ). Zn and Cu concentration wasdetermined using Atomic Absorbance Spectrophotometer (AAS).The result showedN.oculata was better to absorb Cu than Zn. The highest biosorption efficiency in zincaddition was 75.09 % and in copper addition was 95.86 %. N.oculata biosorptioncapacity in zinc addition was 0.95 mg/g and in copper addition was 0.89 mg/g.N.oculata showed the fluktuative trend of biosorption effencency and capacity ineach growth phase. The result showed that the addition of zinc and copperconcentration in N.oculata media cultivation affected indirectly biosorptionefficiency and capacity of N.oculata.MAR-010Potential fishing zone for Pacific saury (Cololabis saira): present and futureconditions. Achmad Fachruddin Syah*, Sei-Ichi Saitoh, Irene D. Alabia, ToruHirawake (University of Trunojoyo Madura; [email protected])Pacific saury (Cololabis saira) is one of the most important epi-pelagic fish andwidely distributed in the subtropical and subarctic waters of the western NorthPacific. Its spatio-temporal distribution is believed influence by the changes ofoceanographic conditions. In the present study, we evaluate the changes of thepotential fishing zones (PFZ) Pacific saury in the present and future condition. Tounderstand the future condition we used future SST projections from the IPCC-CMIP5 RCP4.5 scenario. The present-day distributions derived from habitat modelpredictions were used to analyse the future PFZ of Pacific saury. The habitat modelswere developed using the Pacific saury presence data from the nighttime visibleimages (October-December, 2005-2010) and remotely-sensed environmentalfactors. The results showed considerable changes in the spatial and temporal PFZpattern in the two different conditions, characterized by an increasing degree ofpoleward displacement from 2025 to 2100. The changes of its PFZ under warmingconditions may have consequent socio-economic implication for fisherymanagement strategies in the future, especially for Pacific saury.MAR-011Phytoplankton Community in Ebony Lake, Pantai Indah Kapuk, North Jakarta.Niken Tunjung Murti Pratiwi*, Inna Puspa Ayu, Sigid Hariyadi, Desy Mulyawati,Aliati Iswantari (Bogor Agricultural University; [email protected]) Program Book 107

The 4th International Symposium on LISAT 2017Lake Ebony is an ornamental lake in coastal area of North Jakarta, located at6o6’18”S-6o6’35”S and 106o44’39”E-106o44’56”E. Phytoplankton community inLake Ebony live in high organic materials received from domestic activities waste. Aspatio-temporal observation at five stations was carried out to understand therelationship between community structure of the phytoplankton and water quality.Spatial clustering was determined by Canberra Index, then, the succession ofphytoplankton was shown by graph of Frontier succession models, SDI (rate ofsuccession), and SIMI; and statistical analysis of PCA and correlation test. Therewere two clustered groups of station. Based on graph of Frontier succession,phytoplankton in Lake Ebony was at Stage 2 and 3 with the rate of succession rangedfrom 0.008 to 0.003, and value of SIMI ranged from 0.68 to 0.97. The biplot of PCAand correlation test showed that phytoplankton was associated with ammonia, pH,temperature, conductivity, and salinity.MAR-012Study of Big Pelagic Fish Fishing Ground Based on Net Primary ProductivityData in Indian Ocean. T. Ersti Yulika Sari*, Usman, Nina Miranda Amelia (RiauUniversity; [email protected])Net ocean primary productivity is one of the indicators that are categorized asimportant, high fertility indicated as a potential fishing ground. This study aimed todetermine the temporal and spatial distribution of big pelagic fish, the relationshipbetween net primary productivity (NPP) with the catch per unit effort (CPUE).Fisheries data used big pelagic fishing logbook in 2013 and remote sensing dataderived from monthly Aqua MODIS imageries. A density analysis of CPUE and linearregression were used to determine the relationship between CPUE and NPP. Theresults showed that the highest monthly NPP value was found on February (7.492gCm2/day) while the highest CPUE value was found on August (1.250 fishes/1,000hooks). During seasonal data, second transition monsoon showed the highest NPPaverage value (6.916 gCm2/day) while West monsoon found as the highest CPURvalue (583.33 fishes/1000 hooks). The relation between two data was fair (r=0.5)and found in September, where the influence of the NPP to CPUE was 24.31%.MAR-013Variability of Surface Chlorophyll-a Distribution in the Northwestern Coast ofSumatra revelaed by MODIS . Qurnia Wulan Sari, Putri Adia Utari, DediSetiabudidaya, Indra Yustian, Eko Siswanto, Iskhaq Iskandar* (Riau University;[email protected])The variability of surface chlorophyll-a (chl-a) distributions in the northwesterncoast of Sumatra are important components associated with the phytoplanktonbiomass that supports and enrich the fishery resources of the region. This studyuses the satellite data-ocean color which is derived from the Moderate ResolutionImaging Spectroradiometer (MODIS) Aqua for a period of January 2003 toDecember 2015. The results show that the surface chl-a distribution is strongly Program Book 108

The 4th International Symposium on LISAT 2017associated with the large-scale forcing (e.g. monsoonal winds, EL Niño–SouthernOscillation and the Indian Ocean Dipole). On the seasonal time scale, it is shownthat the satellite observed surface chl-a concentration during the boreal fall andwinter (September-January) is higher than that observed during the boreal summer(June-August). The highest concentration was observed in September which isalmost 0.2 mg/m3. In contrast to the western coast, the surface chl-a in the easterncoast of Sumatra has excessive concentration around 0.5-10 mg/m3 all year around.In addition, the study also revealed that the surface chl-a concentration observedalong the western coast of Sumatra is much higher during the positive Indian OceanDipole periods.MAR-014Spatial and temporal distribution of catch per unit effort yellowfin tuna(Thunnus albacares) by using free and open source geographical informationsystem. Romie Jhonnerie*, Firda Dea Lovita, Defri Anggi Siregar, Usman,Isnaniah (Riau University; [email protected])This paper presents the development of spatial and temporal distribution model ofcatch per unit effort (CPUE) for yellowfin tuna (Thunnus albacares) caught primarilyby longline fishery during 2013. The objective of this research was to determinespatial (fishing area) and temporal distribution of yellowfin tuna fishing effort(CPUE). One year of yellowfin tuna fishing logbook data were used and obtainedfrom Bungus Fishing Port, West Sumatra. The logbook data were reformatted andclassified temporally (monthly, monsoon and annual). Data analyzed by using a freeand open source GIS application, QGIS. A heatmap plug-in tool which based onkernel density estimation (KDE) used to estimate fish density and hook density thencatch per unit effort (CPUE) calculated. Two heatmap parameters were examinedincluded pixel size and kernel shape to determine the optimum result. The resultsshowed that annual CPUE distribution of yellowfin tuna ranged between 0.8333 to5,994 fishes for 1000 hooks and the total amount of CPUE was 203,523.26 fishes for1,000 hooks and covered 153,792 km2 area along West Sumatra waters throughthe Indian Ocean. The highest CPUE occurred during the East monsoon and can befound around Mentawai and Siberut Strait, the total of CPUE amount was830,886.27 fishes for 1,000 hooks and covered 60,208 km2 fishing ground. WhileJune was the highest monthly fishing effort activity, the total amount of CPUE foundwas 4,121,208,87 fishes for 1,000 hooks and covered 14.800 km2 area. Weconcluded that spatial and temporal distribution fishing effort were helpful forpredicting the fishing effort and fish abundances and somehow might improvesustainable fisheries management, especially yellowfin tuna.MAR-015The effect of Water Column Correction for Mapping Shallow Water Habitatsin North Kepulauan Seribu. Vincentius Paulus Siregar*, Syamsul Bahri Agus ,Tarlan Subarno, Nico Wantona Prabowo (Department of Marine Science andTechnology, Faculty of Fisheries and Marine Science, Bogor AgriculturalUniversity; [email protected]) Program Book 109

The 4th International Symposium on LISAT 2017Remote sensing applications for mapping and monitoring coastal and marine areashave been widely used on a regional and national scale. The availability of satelliteimagery with multiple characteristics such as open source and commercial spatialresolution is present as an option in utilizing passive remote sensing technology.Variability of a water columns is one of the factors affecting interpretation resultsof benthic habitat mapping. This study aims to evaluate the effect of water columncorrection (depth invariance index) on the accuracy of benthic habitat classificationmap. The research was conducted at Harapan-Kelapa Island and Karang Bongkok,Kepulauan Seribu. The classes of habitat classification is based on field observation.Water column correcion is done by first overlay the image with the geomorphologyzone map as well as the map of bathymetry and correction of the tidal. An accuracytest using confusion matrix is performed to determine the level of accuracy of theclassification results on the satellite imagery used. Implementation of DII algorithmin slope and lagoon areas resulted in better interpretation of classification resultsand accuracy valuesMAR-016Water Mass Characteristic in the Outflow Region of the IndonesianThroughflow during and post 2016 Negative Indian Ocean Dipole Event.Ahmad Bayhaqi*, Dewi Surinati, Asep S Budiman, Iskhaq Iskandar, Adhitya KWardhana, Dirhamsyah, Dongliang Yuan, Deni O Lestari (Research Center forOceanography - Indonesian Institute of Sciences (LIPI);[email protected])Strong El Niño and positive Indian Ocean Dipole (pIOD) events in 2015/2016followed by relatively strong negative Indian Ocean Dipole (nIOD) and weak La Niñain 2016 events have affected hydrography conditions in the IndonesianThroughflow (ITF) region. Two research cruises were conducted using RV BarunaJaya VIII in August and November 2016. These cruises aim to evaluate possibleimpact of those two climate mode events on the water mass characteristic in theoutflow region of the ITF. Hydrographic data from those two cruises were combinedwith the sea surface temperature (SST) from the Advanced Very High ResolutionRadiometer (AVHRR) and surface wind data from the European Centre for Medium-Range Weather Forecasts (ECMWF). The results showed that warm SST anomalywas observed in the eastern tropical Indian Ocean off South Java and Nusa TenggaraIsland during the cruise. Interestingly, the SST anomaly remained positive untilNovember although it was already on the southeast monsoon season. This positiveSST anomaly was associated with the northwesterly wind anomaly during peak nIODevent. The observed water mass characteristics in the outflow region of the ITFrevealed that the upper layer was dominated by the Pacific Ocean water mass. Onthe other hand, the Indian Ocean water mass was observed in the deeper layer. Theobserved current data across the Sumba Strait showed that the South Java CoastalCurrent (SJCC) was observed in the upper layer, propagating eastward toward theSavu. A few days later, the observed currents in the upper layer of the Ombai Strait Program Book 110

The 4th International Symposium on LISAT 2017revealed the ITF flow towards the Indian Ocean. Meanwhile, the lower layer showedan eastward flow towards the Ombai Strait.MAR-017Effects of La Nina on Coral Reef of the Eastern Indonesia Waters: Case StudyDecember 2016. Devi Fatmasari*, Desak Made Pera Rosita Dewi, Putri SantySiregar (Indonesia State Collage of Meteorology Climatology and Geophysics;[email protected])Coral reefs are important marine systems that provide habitat for diversecommunities of marine animals and plants. Coral reefs also provide valuableenvironmental products and services for coastal community. The existence of coralreefs tightly influenced by dynamic condition of ocean, such as sea surfacetemperature, salinity, and upwelling. Recently, this ecosystem gets a variety ofenvironmental pressures that reduce its function and role. One of them is La Nina,which on La Nina period, the positive sea surface temperature anomaly causingdamage or death of corals known as coral bleaching. The purpose of this study is toanalysis the coral bleaching incident on December 2016 in Eastern Indonesia Watersand its relation to La Nina. This study was done by analyzing Sea SurfaceTemperature data from NOAA Coral Reef Operation Near-Real-Time dataset andSea Surface Salinity data from RSS SMAP Level 3 Sea Surface Salinity dataset. Resultshowed that during December 2016, the positive sea surface temperature anomalycaused by La Nina reaching 20C followed by an increased on Coral BleachingHotspot (HS) by 0.25-1.750C in almost all Eastern Indonesia Waters. Degree HeatingWeeks (DHW) reaching 6°C-weeks showed significant coral bleaching is likely,especially in Flores sea, Sawu sea, Banda sea, and Lombok straight. While analyzingon Sea Surface Salinity data did not show any significant effect on coral bleachingon December 2016.MAR-018Telemetry and Instrumentation System for Water Depth Survey Using Mini-Boat. Arga Iman Malakani, Hasbi Asshidiq, Anggara Meristya K, Farkhad IhsanHariadi*, M. Iqbal Arsyad (School of Electrical Engineering and InformaticsInstitut Teknologi Bandung; [email protected])In this research work, a telemetry and instrumentation system for water-depthsurvey using a mini-boat has been developed. The system consists of two majorparts: the modulesfor data acquisition -such as battery monitoring, water depthdata readings by sensors, telemetry, and Graphical User Interface- and systemsrelated to controls –such as autopilot, propulsion, and radio transmitter. Anautopilot system is a mechanical, electrical, or hydraulic system that guides a vehiclewithout human intervention. The function of this autopilot allows the vehicle toperform missions automatically. An ultrasonic sensor is used to measure the depthwhich will be connected to the microcontroller in order to capture the water depthdata. This ultrasonic sensors will be calibrated to obtain the appropriate scale factor Program Book 111

The 4th International Symposium on LISAT 2017for the process of measurement of water depth. The data will be transmitted usingradio along with battery capacity information data. There are two main telemetrymodules: the transmitter and the receiver. In addition, there is a repeater moduleto increase the range of data transmission. Estimation of telemetry coverage can becalculated with a Link Budget calculation. This estimation calculate various factorswhich can cause signal losses. In the receiver, data can be observed through aGraphical User Interface (GUI). The miniboat platform with autopilot system hasbeen successfully tested in a small water environment. The ultrasonic depthmeasuring instrument has been tested for both air and water environment. Basedon the measurement results, a calibration parameter for the sensor has beendetermined.MAR-019Response of Near Surface Currents in the Indian Ocean to the AnomalousCondition in 2015. Putri Adia Utari, Muhammad Yusup Nurkhakim, Dedi Iskandar*Setiabudidayaa, Iskhaq (Sriwijaya University;[email protected])Anomalous ocean-atmosphere conditions were observed in the tropical IndianOcean during boreal spring to boreal winter 2015. It was suggested that theanomalous conditions were characteristics of the positive Indian Ocean Dipole(pIOD) event. The purpose of this study is to investigate the response of nearsurface currents in the tropical Indian Ocean to the anomalous atmsosphericcondition in 2015. Near surface current from OSCAR reanalysis data combinedwith the sea surface temperature (SST) data from OISST-NOAA with horizontalresolution of 0.25°x, sea surface height (SSH) from and surface winds from theECMWF were used in this study. The analysis shows that the evolution of 2015pIOD started in June/July, peaked in September and terminated in November2015. Associated with the evolution of the pIOD, easterly winds anomalies wereobserved along the equator. As the oceanic response to these easterly windanomalies, the surface currents anomalously westward during the peak of thepIOD. It is interesting to note that the evolution of 2015 pIOD event is closelyrelated to the ocean wave dynamics as revealed by the SSH data. Downwellingwestward propagating Rossby waves were observed in the southwesterntropical Indian Ocean. Once reached the western boundary of the Indian Ocean,they were reflected back into interior Indian Ocean and propagating eastwardas the downwelling Kelvin waves. In agreement with the previous study, thesewestern-boundary reflected downwelling Kelvin waves terminated the pIOD inboreal fall 2015.MAR-020Utilization of Remote Sensing in Determining Potential Location for SeaweedCultivation Based on Oceanography Parameter in Northern Coastal of Cirebon.Leonardus Arya Adiputra*, Tjiong Giok Pin, Ratna Saraswati (University ofIndonesia; [email protected]) Program Book 112

The 4th International Symposium on LISAT 2017Seaweed is one of the many marine resources that provides various benefits inmany aspects of human life. Euchema Cottonii is a type of seaweed that ishealthy and has a high value in the economic market. In general, seaweed is atype of plant that is grown and cultivated in seawaters with specific conditions.Water quality is one of the conditions affected by the coastal environment. Thegoal of this research is to identify potential areas that are suitable for thecultivation of seaweed in the northern coastal area in Cirebon, West Java. Thepotential regions are determined by analyzing several oceanographicparameters such as salinity, sea surface temperature, total suspended solid, andsea surface currents. The oceanographic parameters used in this research, areobtained from the processing of remote sensing data such as Landsat-8 andOSCAR using remote sensing software. Landsat-8 is used to extract salinityvalues, sea surface temperature, and total suspended solid. OSCAR is used toextract the values of sea surface currents. Extracted oceanographic parametersare then analyzed and connected to 2 seasonal conditions that occur inIndonesia, which are western and eastern season. These seasonal conditions,are a factor that affects the distribution of oceanographic parameters thatdetermine the biological condition of seaweed. The analysis of potential regionsfor seaweed cultivation are done using Geographic Information Systems byconsidering the oceanographic parameters in western and eastern seasons andthe environmental conditions of northern Cirebon coast.MAR-021Future Climate Change Responses on Sea-Surface Temperature andPrecipitation in the Tropical Region Based on CMIP5 Performances. YopiIlhamsyah*, Yonny Koesmaryono, Rahmat Hidayat, I Wayan Nurjaya, Agus SalehAtmadipoera, Muhammad Irham (Bogor Agricultural University;[email protected])The climate change is certain to happen in the future. In response to thisprojected increase of greenhouse gas emission, sea-surface temperature, andprecipitation are also changing in the future. In the tropical region whereradiation is abundant and rainfall variability is the greatest, ocean warming dueto climate change lead precipitation to increase in the future as projected byIntergovernmental Panel on Climate Change (IPCC) 2013, and become morevulnerable on extreme climate in the future. Thus, the study on futureconditions of sea-surface temperature and precipitation over tropical regionbased on CMIP5 performances is essential to conduct. The purpose of the studyis to analyze the ability of model outputs of CMIP5 in projecting future states ofsurface ocean warming and precipitaton over tropical regions. Six CMIP5 modelsare evaluated using statistical analysis of mean, standard deviation, 10th and90th percentiles based on historical records as baseline. The averages of allmodels (resolutions of 1⁰x1⁰) is also performed. The analysis is done seasonally.Two emission scenarios are chosen, those are: RCP4.5 and RCP8.5 representingstable and high greenhouse gas emissions, respectively. Temporal projection ofsea-surface temperature and precipitation span from 2006-2055 and 2050-2099 Program Book 113

The 4th International Symposium on LISAT 2017with a baseline of 1956-2005. The domain of study area cover the tropical regionbetween 30⁰N-30⁰S and 29-178⁰E including the maritime continent Indonesia.By analyzing the performances of CMIP5 model outputs provided byAssessment Report 5, it is expected the reliable condition of future sea-surfacetemperature and precipitation over tropical regions are able to derive and tocapture. Hence, the information would be useful for policy makers,stakeholders,etc to reduce climate change risk as well as to increaseproductivity by performing appropriate mitigation and adaptation in manysectors.MAR-022Spatial Distribution of Marine Plankton around Manokwari, West PapuaProvince, Indonesia. Inna Puspa Ayu*, Niken T M Pratiwi, Aliati Iswantari, DesyMulyawati, Goran S. A. Sulaiman, Sigid Hariyadi, Beginer Subhan, HawisMaduppa, Dondy Arafat (Bogor Agricultural University; [email protected])Plankton, especially micro-plankton plays important role in aquatic ecosystem.Their abundance and biodiversity form the base of marine food-webs, andbecome a major contributor to oxygen production. The distribution of micro-plankton around marine ecosystem in Papua could be different spatially. Theaim of this research is to determine spatial biodiversity of micro-planktonaround Manokwari marine ecosystem. Plankton sampling was conducted at fivesites of Manokwari marine ecosystem. Samples of micro-plankton wereidentified morphologically. Biodiversity index was calculated. Spatial analysiswas conducted to map the distribution pattern of plankton using ArcGIS 10.1with IDW (Inverse Distance Weighted) interpolation method. There were found2-16 taxa of phytoplankton and 2-9 taxa of zooplankton in all sites.Phytoplankton was dominated by Bacillariophyceae group and zooplankton byProtozoa and Crustacean groups.MAR-023Ground Surface Inundation Extent by Landsat 8 OLI and SRTM: Case Study dueto Extreme Sea Level Rise in the Early June 2016 in North Jakarta. Asmadin*,Vincentius P. Siregar, Ibnu Sofian, Indra Jaya, Antonius Bambang Wijanarto(Bogor Agricultural University; [email protected])North Jakarta is the most vulnerable inundation coastal area due to climatechanges in Indonesian Capital region. Some of these areas have been inundatedby extreme sea level rise up to the boundary of the coastal wall. Even in earlyJune 2016, some part of the coastal and reservoir walls were destroyed by seawaves up to more than ten meters in length. Scientific study about groundsurface inundation extent employing approaches of multispectral Landsat 8 OLIby Modified Normalized Difference Water Index (MNDWI) and SRTM by InverseDistance Weighted (IDW) algorithm is a primary objective. Sea level risephenomena measured by tide gauge acoustic and analyzed by WTWC algorithm Program Book 114

The 4th International Symposium on LISAT 2017using toolbox MATLAB. The results show that MNDWI separate inundation andnon-inundation areas by the identification of moist surface or saturated areas.MNDWI describes the vulnerable inundation areas based on geomorphologicalfeatures, such as lower plains, water bodies, reservoirs, mangroves, rivers andmoist soils as well. Higher areas and/or a part of coastline with concrete coastalwall are not inundated, and reservoirs, mangroves and natural wall are lessinundation affected. SRTM DEM categorization of height range indicates thatchanges in land elevation are mostly below sea level. The results of spatialanalysis using extraction of IDW data based on the sea tide phenomena whenduring the coastal wall destroyed is reaching 1.75-1.84 m show that groundsurface inundation distribute in all Districts in vulnerable locations.MAR-024Plankton Biodiversity in Four Lagoons of Pari Island. Aliati Iswantari*, InnaPuspa Ayu, Niken T.M. Pratiwi, Siti Nursiyamah, Beginer Subhan (BogorAgricultural University; [email protected])Pari Island group is one of small island unities in Seribu Islands, North Jakarta.Biodiversity of plankton in four lagoons of Pari Island was observed spatially.There were found 77 species of 59 genera of phytoplankton, with six to 31species of each site. All of the taxa of phytoplankton belong to Cyanophyceae,Bacillariophyceae, and Dinophyceae. The total species of zooplanktoncommunity was 21 of 21 genera (and one nauplius) from five phylum or classes,and dominated by Protozoa. The number of taxa ranged from three to 11species, with 6-12 taxa in each sites. The zooplankton belong toProtozoa,Crustaceae, Gastropoda, Pelecypoda, and Nematoda. The diversity ofboth phytoplankton and zooplankton were relatively low.MAR-025Analyzing of Pearson Correlation and Hypothesis Testing Between Rainfall andSea Surafec Temperature in Maritime Meteorological Station of Kendari 2005- 2014. Rizka Erwin Lestari (State College of Meteorology, Climatology andGeophysics Jakarta; [email protected])Sea surface temperature is one of many factors influencing with the weatherpattern in Indonesia. This is caused by evaporation process which in turn isinfluenced by sea surface temperature then it will form a cloud and trigger torainfall in the land. Additionally, it needs to be known that rainfall can affect tohuman activities especially in the agriculture sector. The correlation betweenrainfall and global sea surface temperature has been researched but theresearchers have not taken into consideration yet for local sea surfacetemperature. Because of that, it needs to research about the correlationbetween rainfall and local sea surface temperature. In this paper, it uses rainfalldata for synoptic observation in Maritime Meteorological Station of Kendari2005 – 2014 and sea surface temperature data of NOAA. The analyzing used is Program Book 115

The 4th International Symposium on LISAT 2017pearson correlation analyzing to determine correlation coefficient value withlag time 1 month and hypothesis testing. Besides that, the researcher setsgroups of domain sample to 8 grids. From the result of data processing, it showsthat there is correlation between sea surface temperature and rainfall inMaritime Meteorological Station of Kendari. The strongest correlation happensin grid 6 (120°22’30’’ E - 130°7’30’’ E / 9°52’30’’ S - 5°7’30’’ S) and grid 8(120°22’30’’ E - 130°7’30’’ E / 4°52’30’’ S - 0°7’30’’ S). Correlation sea surfacetemperature with a lag time of 1 month shows higher correlation than withoutlag time. According to this result, rainfall prediction in Maritime MeteorologicalStation of Kendari can involve sea surface temperature in grid 6 and 8 with a lagtime of 1 month.MAR-026Sea Surface Temperature Variability of Indonesian Waters. Yennie Marini,Anneke KS Manoppo, Kuncoro Teguh Setiawan (National Institute ofAeronautics and Space (LAPAN); [email protected])Sea surface temperature variations experienced from time to time inaccordance with the natural conditions that affect the waters. These changesoccur on a daily, seasonal, annual and long-term (decades). Tropical RainMeasuring Mission (TRMM) satellite with the TRMM Microwave Imagingsensors (TMI) is able to monitor sea surface temperature (SST) of Indonesia. Thisresearch aims to study the variability of sea surface temperature for a decadeof 2005-2014 from TMI data that can provide free cloud cover SST information.This research showed that TMI data can describe the SST variability ofIndonesian Water monthly, seasonal and annual for a decade. In general, theSST in Indonesian waters in the west monsoon (March – May) is higher than inthe east monsoon (June-August). During the interval 2005-2014, the lowestannual average of SST occurred in 2006 (28.6°C) and the highest in 2010(29.3°C).MAR-027Study of Coastal Vurnerability in Bangka Barat, Bangka Belitung Island. ShendyAditya, Syawaludin A. Harahap, Sri Astuty, Donny Juliandri Prihadi (PadjajaranUniversity; [email protected])The research aims to determine utilization zone and coastal vulnerability levelin West Bangka, Bangka Belitung Islands. The research was conducted from Mayto June 2016. Data survey was conducted in West Bangka directly and dataprocessing was conducted in Computer Laboratory, Fisheres and MarineScience Faculty, Padjadjaran University. The research uses CVI methods (CoastalVulnerability Index) with Geographic Information System approaching. Theparameters are geomorphology, tidal, coastal slope, wave level, sea level rise,and shoreline change with different weights. The results indicated thatutilization zone is divided into divide into the space pattern and space structure. Program Book 116

The 4th International Symposium on LISAT 2017Utilization zone consist of settlement, farm, mariculture, conservation forest,tourist area and industry area. Settlement are on ‘medium’ vulnerability indexvalue in Muntok and Tempilang districts. Tourist area are on ‘medium-high’vulnerability index value in paritiga districts precisely in Watu cape, Siangaucape, and Ru cape. Overall vulnerability index value in West Bangka that‘medium-low’, ‘medium’ and ‘medium-high’. The percentage of ‘medium-low’is 8, and ‘medium-high’ is 16%.MAR-028Application of Geographic Information Systems (GIS) for mapping thePotential of Fisheries in The Sunda Strait. Surya Gentha Akmal, AchmadFahrudin, Syamsul Bahri Agus, Yonvitner (Bogor Agricultural University;[email protected])Geographic Information Systems (GIS) is a system of information that currentlyis developing very rapidly and used for analysis and mapping of naturalresources, including presenting data of fishery potential based on spatial data.Analysis of acoustic survey in the prediction of potential fisheries in the watersof Sunda Strait was done by GIS. Fish abundance data at some depth wascollected during May through August, and was mapped by ArcGIS 10.4. Theresults of the mapping showed that the largest fish abundance in May was atdepth of 64-84 meters, while the largest fish abundance in June–August was atdepth of 4-24 meters. The largest fish abundance during the months of May–August in waters of Sunda Strait was in July, i.e. of 18 392/1000m3. Thisindicated that the month of July, which was included in the East season, was thepeak season for catching. Catching area was prioritized in northwest of Panaitanisland and Banten Bay offshore.MAR-029Diversity, distribution, and carapace width-weight relationships of dorippidcrabs (Brachyura: Dorippidae) in East of Lampung. Zairion, Agus Alim Hakim,Ali Mashar, Achmad Fahrudin, Luky Adrianto, Bambang Widigdo, YusliWardiatno (Bogor Agricultural University; [email protected])Dorippid crabs (Brachyura: Dorippidae) commonly live in sand or mud substrateat shallow coastal water. These crabs are macro-benthos, mostly found intropical area and might have ecological value. This study aims to determinediversity, species distribution, and carapace width-weight relationships of twodorripid crabs in East Coast of Lampung. This study was conducted on March-April 2017 in seven location of along the coast (Labuhan Maringgai, Kuala Penet,Sekopong, Wako, Seputih, Sungai Burung, and Kuala Teladas). The specimenwas collected from blue swimming crab fisherman as by-catch. Each location isrecorded its coordinate point and depth. The specimens were called \"trash\" byfisherman because the species was no economic value and broke the net. Twospecies have been found, there are Dorippe quadridens and Dorippoides Program Book 117

The 4th International Symposium on LISAT 2017facchino (Herbst, 1785). Both species were almost found at every location, butD. quadridens was not found at Sungai Burung as well as D. facchino inSekopong. The distribution map was processed by using ArcGIS and was showedin this study. There are seventy three percent (50/68) of fishermen get D.quadridens with an average number of 36 individuals and weight of 959 grams.While, forty two percent (28/68) of fishermen get D. facchino with an averagenumber of 17 individuals and weight 152 grams. The carapace width-weightrelationships of D. quadridens showed logarithmic equations as follow: W =0.2183 + 0.8323 Log CL for male and Log W = 0.2183 + 0.8768 Log CL for female.While the carapace width-weight relationships of D. facchino are as follow: W =-1.9935 + 2.2355 Log CL for male and Log W = -2.7691 + 2.8026 Log CL forfemale. The b values of carapace width-weight relationship indicated that thegrowth pattern of both species were negative allometric for male and female.MAR-031Distribution of invasive species (freshwater crayfish, Cherax quadricarinatus)in Bogor and a comparison of morphological characters from several locationsin Indonesia. Ali Mashar, Taryono, Alimuddin, Iya Purnama Sari, Yuyun (BogorAgricultural University; [email protected])Cherax quadricarinatus is freshwater crayfish original from southern of Papuaand has high adaption ability and widespread spatially in Indonesia. This specieshas character fast growing, aggressive, and high fecundity, so that can becomesinvasive species and threaten existence of native species. The widespreadspatially of freshwater crayfish causes the morphological charactersobservation is important to be conducted. This study aims to determine spatialdistribution of freshwater crayfish in Indonesia, especially in Bogor area and tocompare its morphological characters from different ecosystem. This study wasconducted on March-June 2017. Geographic Information System (GIS)application with ArcGIS 10.4 is used to map spatially all the locations wherefreshwater crayfish were found during study using digitation method.Freshwater crayfish is found almost in all locations, mostly in Lake Lido Bogor.Comparison of morphological characters using freshwater crayfish samplesfrom Lake Lido (representing small lake ecosystems), Lake Toba (representinglarge lake ecosystems), and rivers in Bintan Island (representing riverecosystems). Twenty-two morphometric characters of freshwater crayfish havebeen observed. The Kruskall-Wallis test shows that there are nine differentmorphometric characters between freshwater crayfish from the three locationsCluster analysis shows that freshwater crayfish from Lake Lido and Lake Tobahave the highest similarity. The growth rate of ocular, dactyl, and carapacelengths is similar between freshwater crayfish from Lake Lido and Lake Toba,but different between freshwater crayfish from a river in Bintan and Lake Toba. Program Book 118

The 4th International Symposium on LISAT 2017MAR-032Spatial and Temporal Dynamics of Purpel Spotted Bigeye (Priacanthustayenus) in the Waters of Sunda Strait. Surya Gentha Akmal, Naila Khuril Aini,Neri S Sihombing, Maulana DP Riyadi (Bogor Agricultural University;[email protected])Purple spotted bigeye is an fishery commodities with an important economicvalue that live at a depth of 20-200 m. The waters of Sunda Strait is one of thepurple spotted bigeye fishing area. Distribution and dynamics stock of purplespotted bigeye change in every months, but the informations was limited. Thepurpose of this research is identifying about stock dynamics and fishingdistribution of Purple spotted bigeye on spatial and temporal. This research wasconducted in October 2015 to September 2016. Data that were used includednumber of fish, length, weight, sex, and maturity level of gonad. The fishinggears used in each sampling were cantrang and rampus. Obtained data thenconverted to data of abundance and population dynamics with biostatistics andbiomatematic analyses. The distribution of capture location was analyzed usingArc GIS 10.4. The results show that the dynamics of stock was different by time(temporal) and by region (spatial). Stock status indicated that purple spottedbigeye was over exploitation. Fishing peak was during the eastern seasons withthe corresponding fishing area was the southern coast of Panaitan Island andthe western of the Sumur region.MAR-033Identification Iron in shrimp pond surface water Mahakam Delta using UAV.Yunianto Setiawan, Ismail Fahmy Almadi, Y. Budi Sulistioadi, Ali Suhardiman(Mulawarman University; [email protected])The objective of this research is to observe iron element in shrimp pond waterin Delta Mahakam area which has acid sulphate soil characteristic whichinfluence to pyrite formation (Fe2S) to shrimp pond water. Identification of ironfrom the color of water can be done relatively easily and cheaply in pond waterusing Unmanned Aerial Vehicle (UAV) and is very helpful to obtain informationabout the condition of ponds, as an indicator of the success production rate ofponds.The method used in this research use combination method, that is by takingpictures at surface of shrimp pond waters in situ using UAV and measurementresult concentration of iron water surface of shrimp pond in laboratory. Theresults showed a correlation between the visible water color of UAV's photosresults, at altitude 10m with the concentration of iron on the surface of thepond water measured. We concluded that the higher the concentration of ironthe more clearly the golden yellow color appears with the highest concentrationof iron in the measurement of 3.95 mg / l. And at the lowest iron concentrationof 0.2, the color that appears with UAV's photos shows the green color. Program Book 119

The 4th International Symposium on LISAT 2017MAR-034Abundant, distribution, and catch of Scylla seratta in Bulungan District, NorthKalimantan, Indonesia. Bambang Widigdo, Rukisah, Asbar Laga, Agus AlimHakim, Yusli Wardiatno (Bogor Agricultural University;[email protected])Mud crab (Scylla seratta) is an important fisheries commodity that has becomea high economic value in some country. This species is found almost in allIndonesian waters. This present study was aimed to determine the abundant,distribution, and catch of Scylla seratta in Bulungan District, North Kalimantan,Indonesia. The crabs were collected on November-December 2016 in twolocations in Bulungan District; there are Kahayan Delta and Tibi Island. Kahayandelta has 12 plot stations and Tibi Island has 8 plot stations. Crabs were caughtusing ambau pancang (trap) with eel bait that has been salted and dried.Catching was done through 6 trips; first until fourth trips were performed atspring tide and fifth until sixth trips were performed at pairs tide. Scylla serattawas distributed differently at each station in both locations. The average ofcatch is 3.23 kg/hour in Kahayan Delta and 1.34 kg/hour in Tibi Island. Thehighest abundance is on the third trip with the number of 43 individuals/hourand weight of 7.55 kg/hour in Delta Kahayan. By comparing between the twolocations, catch of Delta Kahayan has a higher than the Tibi Island. Mann-Whitney U test results indicated that the number of catches during the springtide is much higher than pairs tide on both locations. The greatest effectivenessof catching tools is on the third trip in Kahayan Delta by 54%.MAR-035The Dynamic of Sea Surface Height and Geotropic Current in Relation toUpwelling and Downwelling Event in Banda Sea. Rizka Erwin Lestari, DesakPera Rosita Dewi, Ayu Vista Wulandari (State College of MeteorologyKlimatology and Geophysics; [email protected])Sea level anomaly and geostrophic current can be used to investigated theupwelling region. The aim of this research is to analyze the dynamic of seasurface height and geostrophic current in relation to upwelling and downwellingphenomenon. The research is focused in Banda Sea because this area isdominantly influenced by climatic and oceanographic factors such as monsoonand Indonesia Trough Flow (ITF). The data used in the research weregeostrophic currents, sea level anomalies and chlorophyll-a from remotesensing for period 2006-2015. The method used in this research is done byspatial and temporal analysis of all parameters which conducted by quantitativedescriptive method. The result showed that upwelling phenomenon mostlyoccurred from July to September which characterized by the negative sea levelanomalies. Cyclonic flow on geostrophic currents causes a decrease in seasurface height due to upwelling event, while the anticyclone flow causes a risein sea surface height due to downwelling event. Program Book 120

The 4th International Symposium on LISAT 2017MAR-036Identification of Potential Fishing Zone (PFZ) Using Carbon-based ProductionModel (CbPM) Method in South Waters of Nusa Tenggara Based on SatelliteData. Devi Fatmasari, Desak Made Pera Rosita Dewi, Putri Santy (State Collegeof Meteorology Klimatology and Geophysics; [email protected])Indonesia is a maritime continent with great marine potential, but this potentialhas not been optimally utilized. Accurate Identified Potential Fishing Zone (PFZ)is considered as one of the most effective and fastest approaches in fisheriesoperations. It helps fishermen in reducing fuel costs and also reducesuncertainty in fishing. This study aims to determine the effect of sea surfacetemperature change, sea surface salinity, and mean sea level anomaly toupwelling using Carbon-based Production Model (CbPM) method so that thedata can be utilized for making Potential Fishing Zone. The location of the studywas taken in the southern waters of Nusa Tenggara, because in this area has avery large variation of Sea Surface Temperature in certain months and alsopassed by Indonesia Trough Flow (ITF). The data used are Sea SurfaceTemperature, Mean Sea Level Anomaly (MSLA), Sea Surface Salinity (SSS),chlorophyll-a, wind direction and speed, and surface current for ten years withperiod 2006-2015. The results showed that upwelling occurred on easterlymonsoon with wind direction from the southeast and wind speed rangedbetween 8-14 knots. The occurrence of upwelling is accompanied by a decreasein sea surface temperature up to -30C and its salinity > 34,600 PSU (PracticalSalinity Unit). The decrease in mean sea level reaches -0.1 m and surface currentvelocity intensification of > 0.5 ms-1 indicates stronger ARLINDO. This resultedin an increase in the value of Net Primary Productivity (NPP) with a duration of4-5 months in May, June, July, August, and September.MAR-037Identification and Retracking Waveform of Jason-2 Altimeter Satellite Data inIndonesian Waters. Bisman Nababan and James P. Panjaitan (Bogor AgriculturalUniversity; [email protected])Monitoring the dynamics of Indonesian sea surface heights in near-real time andsynoptic is very important due to the high possible impact of global warming onIndonesian waters which contain many small islands. This monitoring can beperformed if the data from altimeter satellites and tide gauges are availableproperly and accurately. However, the sea surface height estimation fromaltimeter satellites still contain many weaknesses, especially in shallow waters.Therefore, it is necessary to identify and retrack the waveform of altimetersatellite data to improve the accuracy of sea surface height estimation inIndonesian waters. The purpose of this research was to identify waveformshapes and patterns and perform retracking waveform analyses from altimetersatellite data of Jason-2 in Indonesian waters. The study used data from theSensor Geophysical Data Record type D (SGDR-D) from Jason-2 satellitealtimeter of the year 2012-2014. Waveform retracking analyses were also Program Book 121

The 4th International Symposium on LISAT 2017conducted using several retracker methods. The performance of all retrackerswere examined using a world reference undulation geoid of EGM08. Waveformshape and pattern as well as their variabilities will be discussed in this paper.The accuracy improvement on sea surface height estimation was also showedin this study after performing waveform retracking analyses. Program Book 122

The 4th International Symposium on LISAT 2017SATELLITE TECHNOLOGY AND DATA PROCESSING (SAT)SAT-001Data Processing Indonesia CORS, for Local Weather Forecast. Syachrul Arief*, HekiKosuke (Graduate School of Sciences Hokkaido University;[email protected])Permanent Station network was initiated in 1996 and consisted of 3 continuouslyoperating GPS reference system (CORS). There are BAKO station (West Java), SAMPstation (North Sumatra) and PARE station (South Sulawesi) (Matindas and Subarya,2009). Until today BIG operates 124, it consists 102 stations funded from NationalBudget, 19 stations funded from Indonesia-German Cooperation (by means ofGerman Indonesia Tsunami Early Warning System program), and 3 stations funded(since 1996) from Delft University of Technology (TU Delft) for operational GPSstation in Palu, Watatu, and Toboli (Sulawesi island). Maintenance of permanentGNSS stations network are as follows (Khafid, 2011) : To maintain national geodeticreference frame in active seismic zones for survey and mapping purposes,Mitigation and Crustal eformation monitoring for geological hazard mitigation, Sealevel change monitoring with continuous GPS and Tide Gauge stations collocation,GPS Meteorology to determine PWV in the troposphere and TEC in the ionosphere,Permanent GPS station is part of the Ina-TEWS (Indonesian Tsunami Early WarningSystem), Maintenance of a national geodetic reference frame, which refers to theglobal geodetic reference frame (ITRF), Service instantaneous correction carefulpositioning with GPS (RTK) for the purposes of surveying and mapping, and otherneeds, Study geodynamics in Indonesian territory, Mitigation of earthquakedisasters. In its implementation in Indonesia, there are still very few studies thatutilize CORS data, for the GPS Meteorology to determine PWV in the troposphere,therefore this research seeks to provide utilization of CORS data processing formeteorological purposes. Hopefully CORS data other than as data posisioning canalso be used for weather forecast for local area in Indonesia. Because thedetermination of weather forecast in Indonesia today is very important, forexample for agriculture, transportation and others.SAT-002Application of Global Navigation Satellite System (GNSS) of 2016 Data Aquisitionfor Fault Opak Monitoring Network in DIY Province. Aris Sunantyo*, Parseno(Geodetic Department, Faculty of Engineering, Gadjah Mada University;[email protected])Daerah Istimewa Yogyakarta (DIY) province is one of several provinces in Java Islandthat has a high level tectonic activities area. One of the tectonic activities in DaerahIstimewa Yogyakarta (DIY) province was indicated by the hazardous earthquakewhich was occurred on May 27, 2006. The Yogyakarta earthquake was a tectonicearthquake which was originated by Opak Fault activities. It is very urgent to carryout a research concerning with monitoring of Opak fault activities to mitigatenatural disaster. This study used relative static with GNSS technology for dataacquisition methods. Acquisition of data carried on the observation of doy 128 and129 in 2016. The GNSS observation data processing is done using two scenarios. The Program Book 123

The 4th International Symposium on LISAT 2017first scenario used all of the observations data including additional stations. As forthe second scenario, the processing was done by using observation data withoutadditional stations. Both scenarios were processed using scientific software ofGAMIT / GLOBK. The results of this study are the coordinates and standard deviationof the net of OPK network in 2016. These coordinates in 3D coordinates system,topocentric coordinates system, and UTM coordinates system. Data processing withthe first and second scenarios indicated that coordinate of OPK network has thegreatest standard deviation value of the fraction of centimeter. Based on thesignificant difference test, both scenarios have different coordinates that were notsignificant. This area indicates that in 2016 of OPK network has several significantdisplacement vector.SAT-003Application of Rain Scanner SANTANU and Transportable Weather Radar inAnalyze Mesoscale Convective System (MCS) Events Over Bandung, West Java.Ginaldi Ari Nugroho*, Tiin Sinatra, Trismidianto, Ibnu Fathrio (National Institute ofAeronautics and Space (LAPAN); [email protected])Simultaneous observation transportable weather radar LAPAN-GMR25SP and rain-scanner SANTANU reported heavy rainfall with hail and strong winds occurred atBandung and vicinity on March 17th and April 19th 2017. The events of rain lastedwithin 1 to 2 hours damaged some properties and trees in Bandung. The studyresults reported that heavy rainfall at the case studies due to the mesoscaleconvective system (MCS) which begin from the middle region of Bandung. Thevertical cross section indicated the echo top of both events reached more than 10km above ground level. The reflectivity data showed the dBz value of more than 40dBz as a convective core, but with different echo cell amount, where the event onMarch 17 has a more than one convective core. Clear difference between these twoevents was the form echo on 17 March 2017 were similar with a v-shaped formwhich indicates strong convective activity with a longer duration than the event on19 April. The high convective index were also shown by the T BB data from theHimawari-8 satellite on the same case studies.SAT-004Design and Implementation of Effective Electrical Power System for SuryaSatellite-1. Afiq Herdika Sulistya*; Wahyudi Hasbi; Riza Muhida (Surya University;[email protected])Surya Satellite-1 is a nanosatellite developed by students of Surya University. Thesubject of this paper is the design and implementation of effective electrical powersystem for Surya Satellite 1. The electrical power system role is to supply othersystems of the satellite with appropriate electrical power. First, the requirementsof the electrical power system are defined. The architecture of the electrical powersystem is then designed to build the prototype. The orbit simulation is calculated topredict the power production. When prototype test and simulation data is gained,we make an operation scenario to keep the produced power and the consumedpower in balance. The design of the modules of the electrical power system is Program Book 124

The 4th International Symposium on LISAT 2017carried out with triple junction solar cells, lithium ion batteries, maximum powerpoint trackers, charging controllers, power distributions, and protection systems.Finally, the prototypes of the electrical power system are presented.SAT-005Band Co-registration Distortion Modeling of LAPAN-A3 Multispectral ImagerBased on Satellite Attitude. Patria Rachman Hakim*, A. Hadi Syafrudin, SatriyaUtama (National Institute of Aeronautics and Space (LAPAN), Indonesia;[email protected])One of significant geometric distortion that occurs on images of LAPAN-A3multispectral imager is co-registration error between each color channel detector.The distortion causes composite image seems being blurred since same object indifferent band has different position and orientation within the image. Band co-registration distortion usually can be corrected by using several approaches, whichare manual method, image-matching algorithm, or sensor modeling and calibration.This paper will develop another approach to minimize band co-registrationdistortion on LAPAN-A3 multispectral image using supervised modeling of image-matching with respect to satellite attitude. In this approach, the effect of varioussatellite attitude data to band co-registration error produced by image-matchingalgorithm is investigated based on numerous actual LAPAN-A3 multispectral imageswhich are captured under various attitudes. Modeling result shows that band co-registration error in along-track axis is strongly influenced by pitch attitude angle,while error in across-track axis is strongly influenced by yaw angle as well as fairlyinfluenced by roll attitude angle. The calculation error produced by the modelobtained is pretty good, which lies between 1-3 pixels error for each axis of eachpair of band registration. This mean that the model can be used to correct thedistorted images without the need of slower image-matching algorithm, nor thelaborious effort needed in manual approach and sensor calibration. This fastcalculation feature means that this approach can be used in real-time quick-lookimage processing in ground station or even in satellite on-board image processing.However, accuracy of the model obtained seems to be good only for near-nadirsatellite attitude, since most of the images used in this research are taken when thesatellite not far away from nadir. Therefore, the band co-registration model of eachband should be updated by using every new image captured in the future, to coverwider range of satellite attitude while imaging.SAT-006On-orbit Performance of LAPAN's Experimental Star Sensor on LAPAN-A3/LAPAN-IPB Microsatellite. Muhammad Arif Saifudin*, Nayla Najati, Wahyudi Hasbi(National Institute of Aeronautics and Space (LAPAN), Indonesia;[email protected])The first LAPAN’s experimental star sensor has onboard on LAPAN-A3/LAPAN-IPBmicrosatellite that successfully launch on June, 6 2016 as auxiliary payload of PSLV-C34 mission. The star sensor data needs to be evaluated to know the performanceof the star sensor in orbit. The star sensor is one of the technological demonstrationof satellite component developed by LAPAN to determine the attitude of satellite Program Book 125

The 4th International Symposium on LISAT 2017in orbit. The star sensor based on CCD sensor of industrial-grade camera withmodification on the software to fit the star sensor requirement and 16 mm lens usesto obtain wide Field of View (FOV). The fused silica is used on optical part tominimize the radiation in space that could affected to the CCD degradation. Baffleis designed to minimize the stray light to reach the sensor that caused the noise ofthe star identification algorithm. The robust star identification algorithm isimplemented in the electronics unit to calculate the star position and an optimizedstar catalog also used to ensure the high performance of the star sensor. In Launchand Early Orbit Phase (LEOP) of LAPAN-A3/LAPAN-IPB shows that the star sensor isin proper condition. In orbit test had been conducted covering functional test andperformance test. Those test indicates that the experimental star sensor works welland can be used as attitude sensor of the satellite.SAT-007Optimization of LAPAN-A3 Multispectral Image Acquisition in Real-time ModeScenario. Patria Rachman Hakim*, Rizki Permala (National Institute of Aeronauticsand Space (LAPAN), Indonesia; [email protected])LAPAN-A3 satellite has a four channel push-broom multispectral imager to producea continuous image acquisition of Indonesian archipelago. At present time, imagescaptured by the imager are stored in satellite memory and then downloaded toground station in Kongsberg-Norway before transferred to LAPAN ground stationcenter in Bogor-Indonesia. To build up national capability and independency offoreign technologies, in 2018 LAPAN will have an X-band antenna installed in Bogorto receive LAPAN-A3 multispectral imager data. By doing so, there will be an optionfor LAPAN-A3 multispectral imager to capture west Indonesian regions in real-timeacquisition, thus the imager will be able to observe full area within its ground-trackpath inside LAPAN ground station coverage. However, in this real-time modeacquisition, the image captured must be compressed on-board before transmittedto ground station since the image data rate is beyond satellite transmission rate of105 Mbps. This research will discusses about optimization of image compressionscheme that will be used in this real-time mode acquisition. The goal of this researchis to determine the compression algorithm and some parameter value that will beused, based on actual LAPAN-A3 multispectral images that have been captured upto present time. Analysis of compression algorithm shows that both lossless andlossy mode can be used with its own advantages and disadvantages. Analysis ofHuffman table used in algorithm shows that current default table should beenhanced to produce better compression performance. Finally, spatial coverageanalysis shows that by using real-time acquisition, LAPAN-A3 multispectral imageris capable to produce a steady captured image for area coverage by LAPAN groundstation in Bogor. However, image quality produced in real-time acquisition will bedegraded caused by compression effect. With a careful choice and setup, the trade-off between the coverage area and image quality can be solved to produce optimalLAPAN-A3 multispectral imager real-time acquisition performance. Program Book 126

The 4th International Symposium on LISAT 2017SAT-009Momentum Biased Performance of LAPAN-A3/IPB Satellite for MulitspectralPushbroom Imager Operation. Satriya Utama*, M. Mukhayadi, M. Arif Saifudin(National Institute of Aeronautics and Space (LAPAN); [email protected]).One of LAPAN-A3/IPB satellite’s mission is for earth observation using multipectralpushbroom imager. This mission need a stable attitude and ability for maneuver tocapture any area of interest.To accomplished the mission LAPAN-A3/IPB satelliteuse momentum biased attitude control. The satellite use magnetic torquer tocontrol the angular momentum vector and a reaction wheel to control the pitchangle.This paper observe the attitude stability and maneuverability of the satellite’smomentum biased to capture any area of interest. To capture Indonesian regionfrom northernmost to southernmost the satellite need 5 minutes. Based onnumerous data, the satellite’s momentum bias is stable enough with no oscillationand no significant attitude drift in 5 minutes operation. To capture any area ofinterest the satellite need ability to maneuver. From observation, any maneuver canbe achieved by change angular momentum direction by magnetic torquer currentone orbit before mission. This paper show that the satellite have attitude stabilityand maneuverability to support multispectral pushbroom imager mission.SAT-010High Resolution Imager Experiment with Custom Lens Design For LAPAN-A4Satellite. Elvira Rachim (National Institute of Aeronautics and Space (LAPAN);[email protected]).LAPAN-A4 satellite will be the next satellite developed in Satellite TechnologyCenter-LAPAN, featuring Earth Observation using medium resolution of 4 bandsmultispectral imager high resolution imager, Supporting global maritime trafficmonitoring using space-based AIS receiver and Scientific research using space-based magnetometer. This paper will discuss the custom lens design for the highresolution imager experiment research.SAT-011Requirements and Design Structure for Surya Satellite -1. Hery Steven*, RizaMuhida, Moh.Farid Huzain (Surya University; [email protected]).Currently, there are various references regarding the making of nanosatellitespecifications weighing 1KG – 10KG. Many countries around the world that makenanosatellite experiments must have certain requirements. The references arederived from space agencies such as the National Aeronautics and SpaceAdministration (NASA of America), Japan Aerospace Exploration Agency (JAXA ofJapan), the Indian Space Research Organization (ISRO of India), and other countrieswhich have rocket launchers and send the rockets into space and ISS (International Program Book 127

The 4th International Symposium on LISAT 2017Space Station). The Surya Satellite-1 team got a launching offer from JAXA andcorrespondingly, all nanosatellites manufacturer races on ICD (Interface ControlDocument) which was obtained from JAXA. The establishment of the Surya Satellite-1 framework is also based on the provisions attained from JAXA. The variousspecifications and requirements are specified by the JAXA space agency whichconsists of specific specifications such as the mass of nanosatellite size 1U (10cm x10cm x 11.65cm) of at least 0.13KG and a maximum of 1.33KG, with thedetermination of the point of gravity that should not exceed 2 cm from the centerpoint of nanosatellite geometry. In terms of preventing the solar radiation in space,there is a requirement that obliges the structure of the satellite structure in hardblack anodized shall be more than 10 micro meters on the surface of the satellitestructure. In terms of detail, the structure of the satellite shall be hard blackanodized aluminum after the process of the manufacturing which derived from MIL-A-8625, type 3 document.SAT-012An Application of Spectral Technique Analysis in Investigating the AnomalousChange in the QBO in 2011-2017, especially at 50 hPa Layer. Eddy Hermawan(National Institute of Aeronautics and Space (LAPAN); [email protected]).The quasi-biennial oscillation (QBO) is a tropical lower stratospheric, downwardpropagating zonal wind variation, with a average period of ~27 months. The QBOhas been constantly documented since 1987. Here we describe the evolution of theQBO starting 1987 to 2017, especially from 2011 to 2017 when the enomalouschange was occurring of 2011 t0 2017. We found that anomalous at around 50 hPa.In addition, we present also the characteristics of QBO’s pattern in period of 1999to 2008, when they were at the same pattern for almost all layer between 70 to 10hPa. This is very interesting to be discussed when we can describe those eventsclearly using the spectral technique analysis.SAT-013Doppler Centroid Estimation in Spotlight SAR based on Simulation of SatelliteAttitude. Harry Septanto*, Dwiyanto (National Institute of Aeronautics and Space(LAPAN); [email protected]).Imaging performance of a space-borne synthetic aperture radar (SAR) is influencedby a parameter called Doppler centroid frequency. This parameter naturally existssince the SAR satellite evolves relative to rotating Earth. This paper presents a studyon the Doppler centroid estimation based on simulation of SAR satellite attitude.Two SAR modes, i.e. stripmap and spotlight, will be simulated to obtain the attitudeprofiles. In addition, the SAR satellite is simulated in low Earth orbit aroundEquatorial, where the Earth rotation has significant effect. Eventually, the studyresults implies to design consideration of SAR satellite attitude control strategy. Program Book 128

The 4th International Symposium on LISAT 2017SAT-014Study Of 3d Bathymetry Modeling Using Lapan Surveillance Unmanned AerialVehicle 02 (Lsu-02) Data With Stereomapping Technique, Pacitan, East Java.Nurwita Mustika Sari*, Galdita Aruba Chulafak, Jalu Tejo Nugroho, DonyKushardono (National Institute of Aeronautics and Space (LAPAN);[email protected]).The potential of the aerial photo data with very high spatial resolution is wide forvarious applications such as for study of coastal areas and small islands. Coastal isan ecosystem that has unique object and phenomenon. One of the aerialphotography data can be used is acquisition result using unmanned aircraftdeveloped by LAPAN, LAPAN Surveillance UAV 02 (LSU-02) which is acquired in2016. With spatial resolution reaches 10cm covering the southern coast of Pacitanregency. The potential of such data for coastal studies is extensive. 3D bathymetrymodeling is intended to create an overview of the sea floor topography. In thisresearch the bathymetry model was made by constructing 3D model withstereomapping technique that utilizes the dense cloud created from overlapping ofthose photographs. The result shows that the 3D model bathymetry can be builtwith stereomapping technique.SAT-015Comparison Spatial Pattern of Land Surface Temperature with Mono WindowAlgorithm and Split Window Algorithm: A Case Study in South Tangerang,Indonesia. Tasya Bunai, Rokhmatuloh*, Adi Wibowo (University of Indonesia,Indonesia; [email protected]).In this paper, two methods to retrieve the Land Surface Temperature (LST) fromthermal infrared data supplied by band 10 and 11 of the Thermal Infrared Sensor(TIRS) onboard the Landsat 8 is compared. The first is mono window algorithmdeveloped by Qin et al. and the second is split window algorithm by Rozenstein etal. The purpose of this study is to perform the spatial distribution of land surfacetemperature, as well as to determine more acurate algorithm for retrieving landsurface temperature by calculated root mean square error (RMSE). Finally, wepresent comparison the spatial distribution of land surface temperature by both ofalgorithm, and more acurate algorithm is split window algorithm refers to the rootmean square error (RMSE) is 7.69° C.SAT-016Evaluation of MJO Prediction Model between Statistical and Empirical Method.Ida Pramuwardani*, Hartono, Sunarto, Ardhasena Sopaheluwakan (Gadjah MadaUniversity, Indonesia; [email protected]).Madden Julian Oscillation (MJO) is a phenomenon that oscillate eastward during 40up to 50 days period along equatorial belt approximately between 20 N through 20S. MJO is a global scale ocean-atmospheric circulation that influence weathercharacteristic in the tropical area, particularly Indonesia archipelago, by suppressing Program Book 129

The 4th International Symposium on LISAT 2017air pressure in the area of Maritime Continent, thus triggering convective cloudsdevelopment over Indonesia area.An empirical method for monitoring and prediction was developed since 2001 byWheeler & Weickmann, and was been used extensively in many nationalmeteorology service centers until now. Since Numerical Weather Prediction (NWP)model has shown an inadequacies in the parameterization of physical models forMJO, therefore statistic method still being a preferable method for predicting MJOAn autoregressive method was chosen as statistical method to evaluate MJOprediction, particularly in Indonesia area. A comparison with previous famousempirical method was made to seek the more appropriate method to obtain thebest skill of forecasting MJO. TRMM 3B42 version-7 time series data of 11 years,from 1 January 2006 up to 31 December 2016 was acquired and processed to utilizeusing both empirical and statistical forecasting method. Finally, the accuracy ofrainfall prediction based on MJO phenomenon is a primary objectives in this study.SAT-017Experimental Test for Receiving X-Band Data Lapan-A3 Satellite With 5.4mAntenna Diameter. Sonny Dwi Harsono*, Wahyudi Hasbi (National Institute ofAeronautics and Space (LAPAN), Indonesia; [email protected]).LAPAN-A3 / LAPAN-IPB Satellite launched on June 22, 2016 (03:56 UTC) as anexperimental micro-satellite for remote sensing and monitoring of maritime traffic.The Satellite was launched as a secondary payload on ISRO Cartosat-2C as its mainpayload, the launch carried out at SDSC (Satish Dhawan Space Centre) in India usingPSLV-C34 rocket launcher.The Satellite was in orbit polar sun-synchronous with a height of 505 km above sealevel, with an inclination angle of 97 degrees and heavy satellite 115 kg, with thisorbit, the satellite will pass through Groundstation 4 times (2 times during the dayand two times at night) with a duration of the track at the time of the pass about10-15 minutes.The Satellite payload carried 4 bands Line Scan Cameras and Digital Imager(SpaceCam). For main mission is the earth observation for food vegetables And asadditional mission is carring AIS (Automatic Identification System) receiver tomonitor maritime traffic in the region of the poles, then Star Sensor made by LAPANfor qualifying room, then for scientific contained magnetometer sensor formonitoring the Earth's Magnetic fieldThe purpose of this scientific paper is to test the reception of data payloads of theLAPAN-A3 satellite on X-Band frequency of 8.2 GHz using a 5.4 M solid antennaGroundStations LAPAN in Pare-Pare.The purpose of this experiment will tell us with 5.4 meter of diameter solid antennais capable or not enough for HDRM receiver to lock a signal and produce the dataoutput.SAT-018Preflight Radiometric Model of Linear Imager on LAPAN-IPB Satellite. A HadiSyafrudin*, Sartika Salaswati, Wahyudi Hasbi (National Institute of Aeronautics andSpace (LAPAN), [email protected]). Program Book 130

The 4th International Symposium on LISAT 2017LAPAN-IPB Satellite is Microsatellite class with mission of remote sensingexperiment. This satellite carrying Multispectral Line Imager for captured ofradiometric reflectance value from earth to space. Radiometric quality of image isimportant factor to classification object on remote sensing process. Before satellitelaunch in orbit or pre flight, Line Imager have been tested by monochromator andintegrating sphere to get spectral and every pixel radiometric responsecharacteristic. Pre flight test data with variety setting of line imager instrument usedto see correlation radiance input and digital number of images output. Output inputcorrelation is described by the radiance conversion model with imager setting andradiometric characteristics. Modelling process from hardware level until normalizeradiance formula are presented and discussed in this paper.SAT-019Barium Strontium Titanate Thin Film Growth with Variation of Lanthanum DopantCompatibility as Sensor Prototype in the Satellite Technology. Mulyadi*, RikaWahyuni, Sulidah, Irzaman, Hendradi Hardhienata, Johan Iskandar (BorneoUniversity; [email protected]).Electrical properties of barium strontium titanate thin films were investigated.Three layers of barium strontium titanate thin films have been prepared bychemical solution deposition method and spin coating technique at 8000 rpmrotational speed for 30 seconds and temperature of annealing at 850 °C for eighthours with temperature increment of 1.67 °C/minute. Materials produced by theprocess of lanthanum dopant with doping variations of 2%, 4% and 6% above type-p silicon (100) substrates. Film obtained was then carried out the characterizationof optical properties using USB 2000 VIS-NIR and tauc plot method. As a result, thebarium strontium titanate thin films has the value of bandgap energy of 1.5 eV, 1.9eV and 2.2 eV respectively.Test results showed that the optical properties of barium strontium titanate thinfilms can be development as a sensor prototype on satellite technology.SAT-020Contribution of Beidou Satellitte System for Long Baseline GNSS MEASUREMENTin Indonesia. Irwan Gumilar*, Brian Bramanto, Wedyanto Kuntjoro, Hasanuddin Z.Abidin, Nur Fajar Trihantoro (Bandung Institute of Technology;[email protected]).The demand for more precise positioning method using GNSS (Global NavigationSatellite System) in Indonesia continue to rise. The accuracy of GNSS positioningdepends on the length of baseline and the distribution of observed satellites.BeiDou Navigation Satellite System (BDS) is a positioning system owned by Chinathat operating in Asia-Pacific region, including Indonesia. This research aims to findout the contribution of BDS in increasing the accuracy of long baseline staticpositioning in Indonesia. The contributions are assessed by comparing the accuracyof measurement using only GPS (Global Positioning System) and measurementusing the combination of GPS and BDS. The data used is 30 days of GPS and BDS Program Book 131

The 4th International Symposium on LISAT 2017measurement data for baseline with 100 km in length. The software used is open-source RTKLIB and commercial software Compass Solution. This research willexplain in detail the contribution of BDS to the accuracy of position in long baselinestatic GNSS measurement.SAT-021Comparison and Assessment of Haze Removal Method for Digital Camera Imagesof LAPAN A2 Satellite. Agung Wahyudiono (National Institute of Aeronautics andSpace (LAPAN); [email protected])Haze is one of atmospheric problem that can degraded the image quality notexception on remote sensing field. Image taken under haze condition often lackvisual vividness and caused a poor visibility. Indonesia is an archipelago countrylocated on the equator that has a greater risk of air space filled with clouds, haze,and water vapor. The image captured by digital camera of LAPAN A2 Satellitefrequently showed this atmospheric phenomena. For that we need a method toreduce the effects of the atmosphere. Some kind of method are already proposedby previous research. In this paper we try to compare several methods, observe theresult and then make some assessment to know which method has a better result.SAT-022Bias Correction of Daily Satellite Precipitation Data Using Genetic Algorithm.Angga Wahyu Pratama*, Agus Buono, Rahmat Hidayat (Bogor AgriculturalUniversity, Indonesia; [email protected])Climate Hazards Group InfraRed Precipitation with Stations (CHIRPS) wasproducted by blending Satellite-only Climate Hazards Group InfraRed Precipitation(CHIRP) with Stasion observations data. The blending process was aimed to reducebias of CHIRP. However, Biases of CHIRPS on statistical moment and quantil valueswere high during wet season over Java, Indonesia. In this study, we conductedNonlinear Power Transformation (NL) method whichs is the most effective biascorrection method in correcting bias indicators when observation data can not beapproximated using gamma distribution. Since NL method only adjust mean andvariance, it does not handle bias on quantile values. This study presents a schemeof NL method with additional conditions aiming to mitigate bias on quantile values.Genetic Algorithm (GA) was applied to estimate parameter of NL method. Theexperiment results revealed the proposed scheme robustly reduced biases onvariance and led to reduction of first and second quantile biases. Bias on variancewas reduced up to 97 and 76%, respectively. In addition, bias on third quatile onlyreduced during dry season. We noted that the proposed scheme could not handlebiases on mean, skewness, and kurtosis robustly since the correction processincreased the bias indicators on several months. Program Book 132

The 4th International Symposium on LISAT 2017SAT-023Development of Nanosatellite Technology with APRS Module for DisasterMitigation. Setra Yoman Prahyang*, Muhammad Zulfa Dhiya'ulhaq, Obert PradiptaGolim, Roberto Gunawan, Suhandinata, Evans Jahja, Eframoktora Rievera GianniNelwan, Correy Ananta, Isaiah Mattathias Chow, Novenalista Domitillia FlavianaMali (Surya University; [email protected])Development of nanosatellite technology has enabled satellites to be developedwith multiple capabilities for a specific mission in a short time with a low cost.Satellite communications are proved to be more effective on delivering informationdue to its large coverage area. Surya Satellite-1 will become the first Indonesiannanosatellite developed by undergraduate students. It is designed with low costcommercial payloads, including an APRS module for communication and operatedon VHF and UHF amateur radio frequencies. The mission of the satellites focusedon disaster mitigation through APRS communication network with remote stationslocated on disaster prone areas.SAT-024Sensing of the Atmospheric Variation Using Low Cost GNSS Receiver. BrianBramanto*, Irwan Gumilar, Teguh P. Sidiq, Dudy D. Wijaya, Wedyanto Kuntjoro,Daniel A. Tampubolon (Bandung Institute of Technology;[email protected])As the GNSS signals transmitted through the atmosphere, they are delayed byinterference of TEC (Total Electron Content) in the ionosphere and water vapor inthe troposphere. By using inverse-problem, name GNSS Meteorology, thoseparameters can be obtained precisely and several researches has approved andsupported that method. However, the geodetic GNSS receivers are relatively highcost ($30,000 to $70,000 each) to be established on a regular and uniform network.This research aims to investigate the potential use of low cost GNSS receiver (lessthan $2,000) to observe the atmospheric dynamic both in ionosphere andtroposphere. Results indicated that low cost GNSS receiver is a promising tools tosensing the atmospheric dynamic, however, further processing is needed toenhance the data quality. It is found that both of ionosphere and tropospheredynamic has diurnal periodic component.SAT-026Comparison of Generalized Linear Model and Maximum Entropy in Predicting TheSpread of Invasive Species Acacia Nilotica (case study: Baluran National Park).Sahid Agustian Hudjimartsu*, Arief Budi Darmawan, Yeni Herdiyeni, Lilik BudiPrasetyo, Agung Siswoyo (Bogor Agricultural University; [email protected])Acacia nilotica is an invasive species in the Baluran National Park. The spreadinvasive species of A. nilotica is a serious threat that can disrupt the function ofsavanna ecosystems in providing food for herbivores and eventually led to adecrease in wildlife populations of herbivorous. The growth of invasive species ofA. nilotica is affected when there is a relationship between species and Program Book 133

The 4th International Symposium on LISAT 2017environmental conditions. This relationship is called ecology, and to analyze andpredict ecology can use the Species Distribution Model (SDM). An important aspectof species distribution modelling is the choice of the modelling method. The methodapproach in SDM can be done statistically and machine learning, here we compareGeneralized Linear Model (statistic) and Maximum entropy or Maxent (machinelearning). This study uses data in 2014 consisting of environmental data and invasivespecies distribution data of A. nilotica. Environmental data obtained from theresults of satellite image processing. The result showed prediction model with GLMproduces has been resulted an accuracy value of 97.22 and an AUC value of 0.956.GLM has accurate results and AUC is better than maxent, but in modeling it requirestrained data with presence / pseudo-absence data, whereas maxent only presencedata only.SAT-027Integrated Ground Station Network for LAPAN\'S Satellite Operations Support.Agung Wahyudiono (National Institute of Aeronautics and Space (LAPAN),[email protected])In the future, LAPAN will operate more than one experimental micro-satellite. Tosupport this operation LAPAN has had several ground stations scattered in severalregions. Optimization on internet network capability as a communication linebecomes a concern to improve the performance of the ground stations, especiallyin the control and data acquisition of satellite. GENSO project was inpired us todevelop a ground stations network which connecting each ground station and tohave the ability of remote control operation. Two projects underlying theemergence of GENSO has provided considerable benefits in each regional. Facilitiesand infrastructure owned by LAPAN ground stations are already support to beapplied this concept, although it takes a little addition on several sides. Theincreament of internet bandwidth capacity is also to be considered in order tosupport the smooth operation process.SAT-028Simple Algorithm for Land Cover Classification using Optical-BiophysicalRelationships of Vegetation Spectral: Preliminary result. Yudi Setiawan*, Kustiyo,Lilik Budi Prasetyo, Desi Suyamto (Bogor Agricultural University;[email protected])This study was conducted to find out the usefulness of significant bandcombinations of Landsat 8 OLI/TIRS, for the discrimination of different land covertypes in tropical landscape of Indonesia. Four dates’ multi-spectral Landsat 8 dataduring the period from 2015 to 2016 were used. The analysis was carried out usingvarious multivariate statistics and classification approaches. The Jeffries-Matsushita(J-M) Distance Separability Index were used for selection of best bands for landcover discrimination. The analysis showed that, for discrimination of the vegetationin the study area, NIR was found to be the best band, followed by SWIR and Red.The results of classification showed that inclusion of SWIR band increased theoverall accuracy and kappa coefficient. The ‘Two Band Ratio’ index, which Program Book 134

The 4th International Symposium on LISAT 2017incorporated Red, NIR and SWIR bands, showed improved discrimination in themulti-date dataset classification, compared to other SWIR based indices.SAT-029An Evaluation of the Use of Lapan-A3/IPB Spectral Features to IdentifyAgricultural Land Use Types in Java, Indonesia. Yudi Setiawan, Lilik Budi Prasetyo,Hidayat Pawitan, Arif Kurnia Wijayanto, Prita Ayu Permatasari, Syartinilia, Liyantono(Bogor Agricultural University; [email protected])There are growing interests on how microsatellite image data could be used forvarious applications. Our purpose was to evaluate the utility of multispectralLAPAN-A3/IPB microsatellite imagery in the discrimination and mapping ofagricultural land use types. Two agricultural land use attributes were specificallyconsidered for spectral separability assessment and mapping: crop type and cropgrowth stages. Two scenes of approximately 60 km x 60 km LAPAN-A3/IPB satelliteimagery (LISAT), covering the northern West Java and eastern Java region, wereselected for this study. Acquired on June/July 2017, the imagery covers extensiveagricultural region encompassing the rural towns of Karawang, Bekasi, Jombang,and Nganjuk. LISAT’s visible and near infrared (VNIR) bands, as well as selectedimage transformation layers (e.g. ratios, vegetation indices, and principalcomponents), were utilised. Training areas were selected and supported with fieldinformation and cropping details obtained by interview with farmers. The results ofseparability analysis indicated that LISAT data provided adequate spectraldiscrimination of crop types, and to some extent crop growth stages. Interactionbetween cover attributes produced some classification errors. Despite that, LISAT’ssensitivity to changes in bio-physical conditions indicate that these data are usefulfor mapping within-field variability where the focus is confined to a limited area.The three bands that produced the best average separability are the layerspertaining to vegetation indices: ratio NIR/R, Sqrt(NIR/R) and NIR-R. Program Book 135

The 4th International Symposium on LISAT 2017Map of IPB International Convention Centre (ICC) Botani Square Building 1st floor JL.Padjajaran Raya Bogor Program Book 136

The 4th International Symposium on LISAT 2017The Sketch of meeting room @IPB International Convention Centre (ICC)Building BALL ROOM 1Meeting Meeting MeetingRoom EF Room B Room A 2nd Floor Program Book 137