Article Per Year (5 Year)
p-Index From 2021 - 2026
3.964
P-Index
This Author published in this journals
All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis SOCA: Jurnal Sosial Ekonomi Pertanian METAMORFOSA Journal of Biological Sciences Journal of Marine and Aquatic Sciences E-Journal of Tourism Pastura; Journal Of Tropical Forage Science Bumi Lestari Ecotrophic, Journal of Environmental Science Jurnal Kelautan : Indonesian Journal of Marine Science and Technology JURNAL PIJAR REKAYASA Jurnal Kelautan Tropis Jurnal Geografi Journal of Marine Research and Technology Astonjadro Forest and Society Jurnal Kelautan Nasional International Journal of Remote Sensing and Earth Sciences (IJReSES) Jurnal Sains Riset INTERNATIONAL JOURNAL OF ENVIRONMENT AND GEOSCIENCES Jurnal Ilmiah Sains Jurnal Manusia dan Lingkungan The International Journal of Remote Sensing and Earth Sciences (IJReSES)
Abd. Rahman As-syakur
Program Studi Ilmu Kelautan, Fakultas Kelautan Dan Perikanan, Universitas Udayana, Bukit Jimbaran, Bali 80361, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Library & Information Science Mathematics Physics Social Sciences Other

Published : 63 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 63 Documents
Search

 3   4   5   6   7 
ESTIMATION OF GROSS PRIMARY PRODUCTION USING SATELLITE DATA AND GIS IN URBAN AREA, DENPASAR A.R. As-syakur; T. Osawa; I W.S. Adnyana
International Journal of Remote Sensing and Earth Sciences Vol. 7 No. 1 (2010)
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.ijreses.2010.v7.a1544

Abstract

Remote sensing data with high spatial resolution is very useful to provideinformation about Gross Primary Production (GPP) especially over spatial coverage in theurban area. Most models of ecosystem carbon exchange based on remote sensing data usedlight use efficiency (LUE) model. The aim of this research was to analyze the distributionof annual GPP urban area of Denpasar. Two main satellite data used in this study wereALOS/AVNIR-2 and Aster satellite data. Result showed that annual value of GPP usingALOS/AVNIR-2 varied from 0.130 gC m-2 yr-1 to 2586.181 gC m-2 yr-1. Meanwhile, usingAster the value varied from 0.144 gC m-2 yr-1 to 2595.264 gC m-2 yr-1. The annual value ofGPP ALOS was lower than the value of Aster, because ALOS have high spatial resolutionand smaller interval of spectral resolution compared to Aster. Different land use couldeffect the value of GPP, because the different land use has different vegetation type,distribution, and different photosynthetic pathway type. The high spatial resolution of theremote sensing data is crucial to discriminate different land cover types in urban region.With heterogeneous land cover surface, maximum value of GPP using ALOS/AVNIR-2was smaller than that of Aster, however, the annual mean of GPP value usingALOS/AVNIR-2 was higher than that of Aster.
Application of New Empirical Algorithm in Coastal Waters of Padanggalak Beach to Detect Total Suspended Solid Value Astiti, Sagung Putri Chandra; Dharma, I Gusti Bagus Sila; Pariartha, I Putu Gustave Suryanthara; As-Syakur, Abd. Rahman; Arsana, I Gusti Ngurah Kerta
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.19633

Abstract

Total Suspended Solid is one of the important indicators in the physical parameters to determine the quality status of the waters studied. In this case, researchers will create a new algorithm to detect TSS values ​​at Padanggalak Beach, where the beach is the estuary of the Ayung Watershed. The creation of the algorithm that has been carried out by several researchers took the case in coastal waters, so that the algorithm will cause a fairly high difference in value when applied to other coastal areas. Coastal areas in each place have different characteristics, where coastal areas are dynamic areas, influenced by various factors including climate, weather, wind direction, ocean currents and characteristics of the use of the surrounding environment. Field data taken in the form of seawater samples were then tested in the laboratory to produce TSS concentration values ​​at each sample point. Field observations for TSS sampling in the coastal waters of the Ayung DAS estuary located at Padanggalak Beach were carried out on Wednesday, August 14, 2024 at 08.00 - 10.30 WITA. The form of the new algorithm equation produced along with its correlation level is TSS = -25.096 x (B6/B11) + 42.415, for TSS estimation at Padanggalak Beach. Based on the results of the analysis of the determination coefficient of the New Empirical TSS Algorithm with Insitu TSS, the R2 result was 0.6812. This shows that the results of in situ data and the results of satellite image processing using the New Empirical Algorithm are considered to have a strong correlation relationship, which means that the TSS results from the empirical algorithm are quite in accordance with the TSS results in the field at the Ayung DAS Estuary (Padanggalak Beach).
Validasi Mangrove Health Index Berbasis Sentinel-2 di Bali dan Jawa Timur, Indonesia As-syakur, Abd. Rahman; Novanda, I Gede Agus; Sugiana, I Putu; Dewi, I Gusti Ayu Istri Pradnyandari; Andiani, Anak Agung Eka; Aryunisha, Putu Echa Priyaning; Riskianisya, Adhisti; Wijana, I Made Sara
Jurnal Kelautan Tropis Vol 29, No 1 (2026): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v29i1.30565

Abstract

Hutan mangrove memegang peranan yang penting dalam perlindungan pesisir dan penyerapan karbon, namun ancaman degradasinya terus meningkat. Teknologi penginderaan jauh menawarkan solusi pemantauan efisien melalui Indeks Kesehatan Mangrove atau Mangrove Health Index (MHI) berbasis citra Sentinel-2 (MHI-S2). Penelitian ini mengevaluasi akurasi model empiris MHI-S2 dibandingkan dengan pengukuran MHI lapangan (MHI-L), pada ekosistem mangrove di Bali dan Jawa Timur. Data dikumpulkan dari 194 plot pada 6 lokasi berbeda di Bali dan Jawa Timur dengan pengamatan yang mencakup parameter tutupan tajuk, diameter batang, dan kerapatan pancang/sapling, yang kemudian disandingkan dengan MHI-S2 pada periode waktu berdekatan. Evaluasi kinerja menggunakan koefisien korelasi Pearson (r dan R²), metrik galat/error (RMSE, MAE, bias), koefisien korelasi konkordansi Lin (Lin’s CCC), serta analisis Bland–Altman. Hasil menunjukkan hubungan moderat antara MHI-S2 dan MHI-L (r = 0,71; R² = 0,50). Meski demikian, ditemukan bias positif yang cukup tinggi yaitu sebesar 20,6 yang mengindikasikan kecenderungan overestimasi oleh model MHI-S2. Rendahnya nilai Lin’s CCC (0,36) dan lebarnya rentang batas kesepakatan 95% hasil analisis Bland–Altman (–17 hingga +59) menegaskan akurasi yang terbatas pada skala plot. Temuan ini mengimplikasikan bahwa model MHI-S2 yang tersedia saat ini belum sepenuhnya andal untuk estimasi nilai absolut MHI-L. Oleh karena itu, diperlukan pengembangan model empiris lanjutan serta validasi lapangan yang lebih intensif untuk meningkatkan presisi pemantauan berbasis satelit, demi mendukung keberhasilan manajemen konservasi mangrove.
Co-Authors A. A. Md. Ananda Putra Suardana A. A. Md. Ananda Putra Suardana A. Besse Rimba Abd. Rahman Adi Ariyanto Wibisono Agung Dwi Wijaya Agung Dwi Wijaya Agus Sukma Yogiswara Alfandy Putra Anugrah Anak Agung Ketut Darmadi Andiani, Anak Agung Eka Aryunisha, Putu Echa Priyaning Azhar Muhammad Hanisa Aziz, Kholifatul Azura Ulfa Azura Ulfa Azura Ulfa, Azura Chonnaniyah Chonnaniyah Dewa Ayu Intan Tirta Sari Dewi, I Gusti Ayu Istri Pradnyandari Dian Novianto Dwi Budi Wiyanto Egmont congdenjit Elis Molidena Elok Faiqoh Erwin Prastowo Ferdinan, David Firman Fusanori Miura Gathot Winarso Gathot Winarso Gathot Winarso, Gathot Gayatri, Ni Nyoman Puspa Gde Oka Widiyavedanta Gede Dicky Pradipta Wedayana Gede Surya Indrawan Gede Surya Indrawan Herlambang Aulia Rachman Herlambang Aulia Rachman I Dewa Gede Agung Pandawana I Gede Adi Swastana I Gusti Agung Bagus Wisesa Sastra I GUSTI ALIT GUNADI I Gusti Ayu Kunti Sri Panca Dewi I Gusti Bagus Sila Dharma I Gusti Ngurah Putra Dirgayusa I Kadek Dedy Antara Putra I Komang Subandi I Made Ekayana I Made Saka Wijaya I Made Sara Wijana I Made Sara Wijana I Made Sara Wijana I MADE SUDARMA I Made Sukewijaya I Made Yunarta I Nyoman Dibia I Nyoman Sunarta I Nyoman Wardi I Putu Dedy Pratama I PUTU GUSTAVE SURYANTARA PARIARTHA I Putu Ranu Fajar Maharta I Putu Sugiana I W.S. Adnyana I Wayan Artadana I Wayan Arthana I Wayan Eka Dharmawan I Wayan Gede Astawa Karang I Wayan Kasa I Wayan Nuarsa I Wayan Nuarsa I Wayan Nuarsa I Wayan Restu I Wayan Rusna I Wayan Sandi Adnyana I Wayan Sandi Adnyana I Wayan Suarna I.W. Diara I.W. Rusna Ida Ayu Alit Laksmiwati Indriyanti, Komang Dessica Irwan Jatmiko Istri Pradnyandari Dewi, I Gusti Ayu Joseph Maina Kadek Bagus Padmaningrat Kholifatul Aziz Kholifatul Aziz Komang Kartika Indi Swari Laily Mukaromah M. Rheza Rizki Syahputra M. Rheza Rizki Syahputra M. Sudiana Mahendra Mu'tasim Billah Muhammad Rizki Nandika Muhammad Rizki Nandika Nandika, Muhammad Rizki Nanin Anggraini Nanin Anggraini Nanin Anggraini, Nanin Ni Kadek Apriantari Ni Made Ernawati, Ni Made Ni Wayan Ekayanti Ni Wayan Loviasari Novanda, I Gede Agus Pariartha, I Putu Gustave Suryanthara Parwayoni, Ni Made Susun Prasetio, Wiji Pratama, I Putu Dedy Premananda, I Wayan Hari Premananda, Made Goura Primajana, Dewa Jati Putu Angga Wiradana Putu Angga Wiradana Putu Gede Ardhana Rahardja, Viryanando Evan Ratih Dewanti Ratih Dewanti Ratih Dewanti -Hariyadi Riskianisya, Adhisti Sagung Putri Chandra Astiti Sastra Ardi Agamis Ilhami Stuart Campbell Suardana, A. A. Md. Ananda Putra Sugiana, I Putu T. Osawa Takahiro Osawa Takahiro Osawa Takahiro Osawa Takahiro Osawa Takahiro Osawa Takahiro Osawa Takahiro Osawa Tasuku Tanaka Tiara Permata Sari Viryanando Evan Rahardja Wibisono, Adi Ariyanto Widiastuti Karim Wijana, Made Sara Wijaya, Agung Dwi Wijaya, I Made Saka Wiji Prasetio Wiji Prasetio Wirayuhanto, Harish Yulianto Suteja Zainul Hidayah Zulfa, Rozifatul