Article Per Year (5 Year)
p-Index From 2020 - 2025
5.954
P-Index
This Author published in this journals
All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Perikanan dan Kelautan Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia Forum Pasca Sarjana Maspari Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Ilmu Lingkungan POSITRON Biologi Edukasi : Jurnal Ilmiah Pendidikan Biologi Maspari Journal JAM : Jurnal Aplikasi Manajemen Al-Ahkam Jurnal Perikanan dan Kelautan Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Widyariset Jurnal Kelautan Tropis BERITA BIOLOGI Journal of Applied Geospatial Information JURNAL ENGGANO Omni-Akuatika MAJALAH ILMIAH GLOBE BULLETIN OF THE MARINE GEOLOGY Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) Dinamika Maritim Jurnal Kelautan Nasional Jurnal Segara Jurnal Sosial Ekonomi Kelautan dan Perikanan Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital International Journal of Remote Sensing and Earth Sciences (IJReSES) JURNAL METEOROLOGI DAN GEOFISIKA STI Policy and Management Journal Widyariset COJ (Coastal and Ocean Journal) Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Jurnal Meteorologi dan Geofisika Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital
I Wayan Nurjaya
Bogor Agricultural University
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Social Sciences Other

Published : 89 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 89 Documents
Search

 5   6   7   8   9 
Condition and zonation of mangrove ecosystems in the small islands around the area crossed by the equatorial line of North Maluku Province Najamuddin, Najamuddin; Baksir, Abdurrachman; Akbar, Nebuchadnezzar; Ismail, Firdaut; Siolimbona, Abdul Ajiz; Arafat, Dondy; Paembonan, Rustam E; Kotta, Raismin; Subhan, Beginer; Tahir, Irmalita; Natih, Nyoman MN; Wibowo, Eko S; Marus, Ikbal; Nurjaya, I Wayan; Bengen, Dietriech Geoffrey
Depik Vol 13, No 2 (2024): AUGUST 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.2.32075

Abstract

The South Halmahera Islands feature a comprehensive marine coastal ecology. The ecosystems found were seagrass, mangrove and coral reef ecosystems. The components that sustain the existence of this ecosystem are employed equitably because of its geographical location on the equator. Mangrove ecosystems that provide benefits directly and indirectly to the community. The purpose of this study was to determine the condition of the mangrove ecosystem based on the hemispherical photography method and the type of zonation. Tawabi Island, Kayoa, South Halmahera Regency served as the site of the equator research. The research station is determined as many as 3 stations. Mangrove percent cover canopy using the hemispherical photography and transect quadrant for density. Field data gathering procedures with transects drawn perpendicular from the sea to the land. Zonation characteristics and thickness using zone tracking. Density mangrove using ecology analysis and zonation using canvas 9.0. The results of the research founded were Rhizophora apiculata, Rhizophora mucronata and Sonneratia alba. Mangrove percent cover canopy were good category (75-81%), where station I (75%), station II (81%) and station III (77%). Station I having 600 trees per ha, station II having 500 trees per ha, and station III having 400 trees per ha (low density category). Mangroves were found in 3 zones Sonneratia alba, Rhizophora apiculata and Rhizophora mucronata. The mangrove thickness from sea to land at station I (65 meters), station II (69 meters) and station III (42 meters).Keywords:biodiversitycoastalequator lineHalmaheratropical
Karakteristik Pola Arus di Perairan Teluk Jakarta Pada Musim Barat dan Timur Nugraha, Teguh; Nurjaya, I Wayan; Rastina; Susanti, Santi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 17 No. 1 (2025): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v17i1.41406

Abstract

Teluk Jakarta merupakan contoh wilayah pesisir yang berpotensi terus mengalami perubahan, baik dipengaruhi oleh faktor alami seperti angin, arus, dan gelombang, serta aktivitas manusia seperti pemukiman, pembangunan pesisir, industri, serta eksplorasi sumber daya perairan dan pesisir. Adanya fenomena munson di Laut Jawa berpengaruh terhadap perubahan pola hidrodinamika perairan Teluk Jakarta, terutama perubahan pola arus. Penelitian ini bertujuan menganalisis perubahan pola arus perairan Teluk Jakarta tahun 2021 pada dua musim yang berbeda (musim barat dan musim timur) melalui pendekatan model hidrodinamika. Penyelesaian solusi hidrodinamika dilakukan menggunakan perangkat lunak OpenFlows dengan data masukan berupa batimetri, pasang surut, angin, dan gelombang, serta validasi hasil model menggunakan data pasang surut dan arus hasil pengukuran di lapang pada bulan Maret dan Agustus tahun 2021. Hasil pemodelan hidrodinamika menunjukkan adanya perubahan arah dan kecepatan arus pada dua musim yang berbeda, baik berdasarkan fase pasang surut yang berbeda maupun pada arus non-pasut (residu). Pola arus pada kedua kondisi sejalan dengan pola perubahan angin pada kedua musim, mengindikasikan kuatnya pengaruh rezim munson di perairan Teluk Jakarta. Hasil validasi model hidrodinamika menggunakan arus dan pasang surut berdasarkan nilai Root Mean Square Error (RMSE) yang ditampilkan pada diagram taylor menunjukan nilai yang baik, mengindikasikan bahwa hasil model dapat merepresentasikan kondisi arus sebenarnya di lapangan. Hasil model hidrodinamika yang baik ini bermanfaat untuk menjadi dasar membuat model lanjutan seperti model sebaran polutan, sedimen, sampah dan lain-lain.
DAMPAK PERUBAHAN KAWASAN HUTAN MENJADI AREAL INDUSTRI BATUBARA TERHADAP KUALITAS AIR DI SEPANJANG DAS BERAU–KALIMANTAN TIMUR Ety Parwati; Kadarwan Soewardi; Tridoyo Kusumastanto; Mahdi Kartasasmita; I Wayan Nurjaya
Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital Vol. 8 No. 1 (2011)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/inderaja.v8i1.3252

Abstract

The study of landused change: forest area become coal industrial area and its impact in Total Suspended Solid is done by remote sensing data. The different combination channel of remote sensing data are taken to extract landuse and Total Suspended Solid (TSS) spatial information. The supervised classification is used for land used spatial extraction and otherwise for TSS, there is a specific algorithm; TSS = 3.8926 * exp (31.417*Red Band). The result showed that there was the relationship between landuse change from forest into coal industrial, shrub, paddy field, bareland and settlement area and the dynamic change of TSS along Berau watershed.
Analisis Kelayakan Teknis dan Finansial Pengembangan Energi Arus Laut di Selat Madura Firdaus, Adil Mahfudz; Kusumastanto, Tridoyo; Nurjaya, I Wayan
Jurnal Aplikasi Manajemen Vol. 12 No. 3 (2014)
Publisher : Universitas Brawijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

The increase number of the user of oil and gas energy will lead to depletion of fossil energy resources, therefore it is important to develop renewable energy sources. Ocean currents energy is one of renewable energy sources which can be developed to fulfill problems of the highly request of energy. The economic of ocean currents study has not been known clearly in the aspect of price and feasibility. Therefore, this research aims to analyze the potential of ocean currents energy development as a power plant in Madura Strait, East Java Province. The analysis methods that were used in this study were oceanographic, technical and benefit cost. Based on the research, Madura Strait has sufficient resource potential to produce energy. Benefit cost analysis shows that ocean currents energy power plant development is financially feasible to be developed for 2 units or more.
Mapping and validation of spatial algorithm for monitoring turbidity of seagrass habitat using sentinel-2B imagery in Ternate Island Paembonan, Rustam Effendi; Bengen, Dietriech Geoffrey; Nurjaya, I Wayan; Agus, Syamsul Bahri; Natih, Nyoman Metta N; Subhan, Beginer; Santoso, Joko
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46989

Abstract

Turbidity is a parameter of the marine environment that greatly affects the condition of seagrass whose habitat is an intertidal zone in shallow sea waters. Seagrass is an important type of ecosystem that can be found in several coastal areas of Ternate Island. This study aims to analyze the turbidity conditions of seagrass habitat waters and apply a remote sensing algorithm using Sentinel 2B images. The turbidity research method was carried out by field measurements. The turbidity algorithm model used refers to references with mathematical equations (Rrs665-0.014)/0.013, and the development of a new algorithm as a comparison algorithm. Both algorithms were validated with field data to determine the level of accuracy using the Normalized Mean Absolute Error (NMAE) and determination coefficient (R2). The results were obtained from turbidity data with values ranging from 0.3 NTU to 1.5 NTU with an average value of 0.87 0.45 NTU. The Sentinel 2B image in this study was restored with geometric corrections, atmosphere, radiometric digital values, land masking, and sun glint. The turbidity algorithm model used obtained good accuracy in mapping and monitoring the turbidity of seagrass habitat waters on Ternate Island. The application of the turbidity algorithm used as a reference in this study has an NMAE value of 50.44 and R2 of 0.8822, while the newly discovered turbidity algorithm has an NMAE value of 29.38 and R2 of 0.8827.Keywords:remote sensingecosystemscoastalsedimentationNorth Maluku
Preliminary study oceanography and environmental parameters of habitat endemic species Halmahera walking shark (Hemiscyllium halmahera) on Indopacific Ocean Area in North Maluku Indonesia Natih, Nyoman Metta N; Akbar, Nebuchadnezzar; Bengen, Dietriech G; Nurjaya, I Wayan; Subur, Riyadi; Baksir, Abdurrachman; Ismail, Firdaut; Wahab, Iswandi; Arafat, Dondy; Paembonan, Rustam E; Siolimbona, Abdul Ajiz; Rasidi, Rasidi; Budiman, Asep Sandra; Subhan, Beginer
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46913

Abstract

The Halmahera Walking Shark (Hemiscyllium halmahera) is an endemic species in the Halmahera Sea. Information related to the environment in general has not been described in a complex manner. The environment is the main factor to support the life of biota. Environmental characteristics are a determining factor in the sustainability of biota. The study aims to provide information related to the physical environment of the habitat of the H. halmahera species. Primary data collection was carried out directly (in situ). Current data was taken using the Lagrange method using a currents drogue. Tides using tidal palms and observed for 24 hours. Secondary data was taken from Marine Copernicus and the Geospatial Information Agency (BIG). All data were tabulated and analyzed by Ocean Data View (ODV) software. The results of the study found that the surface current velocity was found to be in the fast current category. Current speed descriptively provides information on the life of H. halmahera. Primary data shows that the direction of the surface current moves to the east and north. Secondary data in vertical distribution shows weak zonal and meridional current shifts. The tidal pattern was found to be two high and low tides (semidiurnal). The distribution of surface temperature was found to be around 30-32oC. The vertical temperature profile found three layers, namely 1-13m (30oC), 65m (25oC) and 71m (20oC). The chemical environment showed all normal variables. The physical and chemical environmental conditions support H. halmahera to inhabit the sea area of Morotai Island. The environmental description has provided a brief understanding of how the ecological role of the H. halmahera species. Management and sustainability of the environment in the future due to climate change can be done with information on habitat characteristics.Keywords:coral triangleHalmaheranicheNorth Malukutropical
Mapping and validation of spatial algorithm for monitoring turbidity of seagrass habitat using sentinel-2B imagery in Ternate Island Paembonan, Rustam Effendi; Bengen, Dietriech Geoffrey; Nurjaya, I Wayan; Agus, Syamsul Bahri; Natih, Nyoman Metta N; Subhan, Beginer; Santoso, Joko
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46989

Abstract

Turbidity is a parameter of the marine environment that greatly affects the condition of seagrass whose habitat is an intertidal zone in shallow sea waters. Seagrass is an important type of ecosystem that can be found in several coastal areas of Ternate Island. This study aims to analyze the turbidity conditions of seagrass habitat waters and apply a remote sensing algorithm using Sentinel 2B images. The turbidity research method was carried out by field measurements. The turbidity algorithm model used refers to references with mathematical equations (Rrs665-0.014)/0.013, and the development of a new algorithm as a comparison algorithm. Both algorithms were validated with field data to determine the level of accuracy using the Normalized Mean Absolute Error (NMAE) and determination coefficient (R2). The results were obtained from turbidity data with values ranging from 0.3 NTU to 1.5 NTU with an average value of 0.87 0.45 NTU. The Sentinel 2B image in this study was restored with geometric corrections, atmosphere, radiometric digital values, land masking, and sun glint. The turbidity algorithm model used obtained good accuracy in mapping and monitoring the turbidity of seagrass habitat waters on Ternate Island. The application of the turbidity algorithm used as a reference in this study has an NMAE value of 50.44 and R2 of 0.8822, while the newly discovered turbidity algorithm has an NMAE value of 29.38 and R2 of 0.8827.Keywords:remote sensingecosystemscoastalsedimentationNorth Maluku
Preliminary study oceanography and environmental parameters of habitat endemic species Halmahera walking shark (Hemiscyllium halmahera) on Indopacific Ocean Area in North Maluku Indonesia Natih, Nyoman Metta N; Akbar, Nebuchadnezzar; Bengen, Dietriech G; Nurjaya, I Wayan; Subur, Riyadi; Baksir, Abdurrachman; Ismail, Firdaut; Wahab, Iswandi; Arafat, Dondy; Paembonan, Rustam E; Siolimbona, Abdul Ajiz; Rasidi, Rasidi; Budiman, Asep Sandra; Subhan, Beginer
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46913

Abstract

The Halmahera Walking Shark (Hemiscyllium halmahera) is an endemic species in the Halmahera Sea. Information related to the environment in general has not been described in a complex manner. The environment is the main factor to support the life of biota. Environmental characteristics are a determining factor in the sustainability of biota. The study aims to provide information related to the physical environment of the habitat of the H. halmahera species. Primary data collection was carried out directly (in situ). Current data was taken using the Lagrange method using a currents drogue. Tides using tidal palms and observed for 24 hours. Secondary data was taken from Marine Copernicus and the Geospatial Information Agency (BIG). All data were tabulated and analyzed by Ocean Data View (ODV) software. The results of the study found that the surface current velocity was found to be in the fast current category. Current speed descriptively provides information on the life of H. halmahera. Primary data shows that the direction of the surface current moves to the east and north. Secondary data in vertical distribution shows weak zonal and meridional current shifts. The tidal pattern was found to be two high and low tides (semidiurnal). The distribution of surface temperature was found to be around 30-32oC. The vertical temperature profile found three layers, namely 1-13m (30oC), 65m (25oC) and 71m (20oC). The chemical environment showed all normal variables. The physical and chemical environmental conditions support H. halmahera to inhabit the sea area of Morotai Island. The environmental description has provided a brief understanding of how the ecological role of the H. halmahera species. Management and sustainability of the environment in the future due to climate change can be done with information on habitat characteristics.Keywords:coral triangleHalmaheranicheNorth Malukutropical
Coastline Change in the Banyuasin Estuary Over the Last Three Decades Surbakti, Heron; Nurjaya, I Wayan; Bengen, Detriech G; Prartono, Tri; Agussalim, Andi; Aryawati, Riris; Sitepu, Robinson; Salsabilah, Raisyah
Jurnal Ilmu Lingkungan Vol 23, No 4 (2025): July 2025
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.23.4.1056-1065

Abstract

Coasts or shorelines are sites of dynamic activity, and phenomena such as wave and tidal action, sediment supply rate, sea level changes, and the morphological characteristics of the area play a critical role in shaping coastal ecosystems. This study examines coastal changes along the Banyuasin Estuary in South Sumatra, Indonesia, over 30 years (1989–2019). We use remote sensing data, machine learning, and the DSAS tool to analyze historical changes (1989-2019). Landsat images obtained from the United States Geological Survey (USGS) via the Google Earth Engine API are analysed using ArcGIS and DSAS 6.0 software. The largest rate of change occurred at Anakan Island, with the most significant accretion rate being 118.98 m/year, causing a shoreline change of 2012.33 m over 30 years. The smallest shoreline changes were in the Telang and Payung Island areas, which are located in the Musi River Estuary. The magnitude of maximum shoreline change in both locations was 62.72 m and 92.34 m, respectively, with maximum rates of change ranging from 2.09 - 3.08 m/year. The results show that the general pattern of accretion-abrasion in the Banyuasin Estuary is divided into three stages: rapid accretion stage (1989-1994), accretion-erosion adjustment stage (1994-2009), and slow erosion stage (2009-2019).
Co-Authors . Sukenda Abdurrachman Baksir, Abdurrachman Adi Purwandana Adibrata, Sudirman Adil Mahfudz Firdaus Adil Mahfudz Firdaus Adil Mahfudz Firdaus Agus Atmadipoera Agus Saleh Atmadipoera Agus Sholeh Atmadipoera Ahmad Herison Akmala Dwi Nugraha Alan Frendy Koropitan Alimuddin, Alimuddin Amir Yarkhasy Yuliardi Andhi Setyonugroho Andi Agussalim, Andi Andri Purwandani Ari Purbayanto Ariane Koch-Larrouy Ario Damar Asep Sandra Budiman Asep Sandra Budiman Asep Sandra Budiman, Asep Sandra Baharuddin Baharuddin Bambang Kanti Laras Beale, Calvin S. Beginer Subhan Bengen, Detriech G Darmiati Dedi Sugianto Dema Okgareta Denny Alberto Satrya Gumay Derek Soto Dietrich G Bengen Dietriech G. Bengen Dietriech G. Bengen Dietriech Geoffrey Bengen Dondy Arafat Dwiyoga Nugroho Eddy Supriyono Edi Kusmanto Enang Harris Surawidjaja Esty Kurniawati Esty Kurniawati Ety Parwati Ety Parwati Ety Parwati Ety Parwati fadli syamsudin Fani Safitri Ferawati Runtuboi Ferdy Gustian Firdaus, Adil M. Franto Novico Fredinan Yulianda Harpasis S Sanusi Harpasis S Sanusi Harpasis s. Sanusi Hefni Effendi Heron Surbakti Heron Surbakti Hidayat Pawitan Holyness Nurdin Singadimedja HS, Surjono I Gusti Bagus Wiksuana Ida Bagus Made Baskara Andika IG Wayan Adiwilaga Ikbal Marus, Ikbal Indra Jaya Indra Jaya Indra Jaya Indra Jaya Irmalita Tahir, Irmalita Irzal Effendi Ismail, Firdaut Ismudi Muchsin Ismudi Muchsin John I Pariwono Joko Purwanto Joko Santoso Jonson Lumban Gaol Kadarwan Soewardi Kadarwan Soewardi Kadarwan Soewardi Kadarwan Soewardi Kasman Kasman Khairunnisa Khairunnisa Kholil Kholil Kholil Kholil Kotta, Raismin Krisna Rendi Awalludin Kusnanto La Ode Nurman Mbay Leica Febby Shafitri Leni Maryani Lerma Yuni Siagian Luky Adrianto M. Zairin Junior Mahdi Kartasasmita Mahdi Kartasasmita Mahdi Kartasasmita Mahdi Kartasasmita Manalu, Janviter Marimin , Mario Putra Suhana Mennofatria Boer Muh. Ishak Jumarang Muhamad Muliadi Muhammad Agus Muljanto MUHAMMAD AGUS SUPRAYUDI Muhammad Marzuki Mulia Purba Mulia Purba Mulia Purba Mursalin Mursalin Najamuddin N Najamuddin Najamuddin, Najamuddin Nandi Abdul Aziz Nebuchadnezzar Akbar Neviaty P Zamani Neviaty P. Zamani Noor, Hariansyah Novit Rikardi Nugraha, Teguh Nur Asia Umar Nur Audina Nyoman M N Natih Nyoman M.N Natih Paembonan, Rustam E Paputungan, Mohammad Sumiran Pramudyo Dipo Rasidi, Rasidi Rastina Ratu Almira Kismawardhani Ratuluhain, Eva Susan Richardus F Kaswadji Richardus F. Kaswadji Ridha Alamsyah Riris Aryawati Risandi Dwirama Putra Rita Rafni Riyadi Subur, Riyadi Robin Saputra Robinson Sitepu Rustam Effendi Paembonan, Rustam Effendi Saenudin Sakka Sakka Salnuddin Salnuddin, Salnuddin Salsabila, Unik Hanifah Salsabilah, Raisyah Santi Susanti, Santi Satria Yukiadi Santoso Septy Heltria Setyo Handayani Setyo Handayani Sigid Hariyadi Siolimbona, Abdul Ajiz Soma Somantri Sugeng Budiharso Sugeng Budiharsono Suhaemi Supriyono, Supri Surjono HS Syamsul Bahri Agus, Syamsul Bahri Tri Hartanto Tri Prartono Tridoyo Kusumastanto Try Al Tanto Try Al Tanto Try Al Tanto Vincentius P Siregar Wahab, Iswandi Wahyu W Pandoe Wibowo, Eko S Widodo S. Pranowo Yogi Cahyo Ginanjar Yonvitner - Yudi Setiawan Yuli Naulita Yusli Wardiatno Zibar, Zan Zulfikar, Andi