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All Journal JFMR (Journal of Fisheries and Marine Research) International Journal of Remote Sensing and Earth Sciences (IJReSES)
Adi Wijaya
Balai Riset dan Observasi Laut
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Engineering Environmental Science

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KARAKTERISTIK SPASIAL TEMPORAL KONDISI OSEANOGRAFI LAUT BANDA DAN HUBUNGANNYA DENGAN POTENSI SUMBERDAYA PERIKANAN Adi Wijaya; Bayu Priyono; Nadya Christa Mahdalena
JFMR (Journal of Fisheries and Marine Research) Vol 2, No 2 (2018): JFMR VOL 2 NO 2
Publisher : JFMR (Journal of Fisheries and Marine Research)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2492.174 KB) | DOI: 10.21776/ub.jfmr.2018.002.02.4

Abstract

The Banda Sea is an area of water with a high potential in the field of fisheries. The condition is indicated by high fishing season. This paper aims to examine the relationship between physical oceanographic conditions with tuna, tuna and skipjack catch landed at the Ambon Fishing Port (PPN) of Ambon in 2015. The data used are monthly average monthly data of INDESO model of the model which includes temperature, salinity and current with 1/12-degree spatial resolution. Based on data of tuna fish caught at temperature range 16-18 0C, salinity 34-34,5 PSU, current 0,1-0,05 m/s at >200 m deep; tuna fish caught at temperature range 20-22 0C, salinity 34-34,5 PSU, current 0,1-0,05 m/s at depth <100 m; and skipjack caught at temperature range 29,5-31 0C, salinity 31-33 PSU, current 0,15-0,30 m/s at depth <100 m. The results showed that the conditions of temperature, salinity and current vertically in the Banda Sea at depths of <100 and >200 m, showed an increase in a catch during the transition period II (September-November) and the west season, while in the transition season I (March-May) and the east has decreased.
RETRIEVING COASTAL SEA SURFACE TEMPERATURE FROM LANDSAT-8 TIRS FOR WANGI-WANGI ISLAND, WAKATOBI, SOUTHEAST SULAWESI, INDONESIA Eko Susilo; Rizki Hanintyo; Adi Wijaya
International Journal of Remote Sensing and Earth Sciences (IJReSES) Vol 16, No 1 (2019)
Publisher : National Institute of Aeronautics and Space of Indonesia (LAPAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1001.911 KB) | DOI: 10.30536/j.ijreses.2019.v16.a3044

Abstract

The new Landsat generation, Landsat-8, is equipped with two bands of thermal infrared sensors (TIRS). The presence of two bands provides for improved determination of sea surface temperature (SST) compared to existing products. Due to its high spatial resolution, it is suitable for coastal zone monitoring. However, there are still significant challenges in converting radiance measurements to SST, resulting from the limitations of in-situ measurements. Several studies into developing SST algorithms in Indonesia waters have provided good performance. Unfortunately, however, they have used a single-band windows approach, and a split-windows approach has yet to be reported. In this study, we investigate both single-band and split-window algorithms for retrieving SST maps in the coastal zone of Wangi-Wangi Island, Wakatobi, Southeast Sulawesi, Indonesia. Landsat-8 imagery was acquired on February 26, 2016 (01: 51: 44.14UTC) at position path 111 and and row 64. On the same day, in-situ SST was measured by using Portable Multiparameter Water Quality Checker – 24. We used the coefficient of correlation (r) and root mean square error (RMSE) to determine the best algorithm performance by incorporating in-situ data and the estimated SST map. The results showed that there were differences in brightness temperature retrieved from TIRS band10 and band 11. The single-band algorithm based on band 10 for Poteran Island clearly showed superior performance (r = 69.28% and RMSE = 0.7690°C). This study shows that the split-window algorithm has not yet produced a accurate result for the study area.
VARIABILITAS KLOROFIL-a PERIODE INDIAN OCEAN DIPOLE DI SELAT BALI BERDASARKAN ANALISIS EMPIRICAL ORTHOGONAL FUNCTION Adi Wijaya; Umi Zakiyah; Abu Bakar Sambah; Daduk Setyohadi
JFMR (Journal of Fisheries and Marine Research) Vol 5, No 2 (2021): JFMR VOL 5 NO.2
Publisher : JFMR (Journal of Fisheries and Marine Research)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2021.005.02.4

Abstract

Perairan Selat Bali secara tidak langsung dipengaruhi oleh peristiwa yang terjadi di Samudera Hindia Selatan Jawa. Variabilitas musim dan antar-tahunan dari konsentrasi klorofil-a permukaan (SSC) di Selat Bali, berhubungan erat dengan periode Indian ocean dipole (IOD) dan upwelling kuat yang terjadi di sepanjang Pantai Selatan Jawa. Penelitian ini bertujuan untuk menganalisis variabilitas musiman dan antar-tahunan secara spasial dan temporal dari klorofil-a periode IOD di Selat Bali. Data oseanografi diperoleh dari Satelit Aqua/Terra MODIS (Moderate Resolution Imaging Spectroradiometer) level 2 harian, selama periode Maret 2000-Mei 2020, dan analisis data menggunakan Empirical Orthogonal Function (EOF). Analisis EOF dilakukan pada data harian yang dikomposit menjadi bulanan dan dinormalisasi untuk mengisi data kosong. Hasil analisis EOF variasi temporal yang koheren dalam pemompaan klorofil-a di Selat Bali. Deret waktu dari mode pertama yang terbentuk mengungkapkan variasi musiman yang kuat dan variasi antar-tahunan yang relatif lemah. Mode kedua menunjukkan variasi antar-tahunan yang berbeda dengan klorofil-a yang tinggi di sepanjang pantai Selat Bali. Klorofil-a tinggi bersama dengan suhu permukaan laut yang rendah terjadi pada saat musim tenggara. Pola musiman berdasarkan analisis EOF menunjukkan mode pertama selama puncak IOD September hingga November (SON) menunjukkan klorofil-a tinggi di pantai Selat Bali. Deret waktu dari mode EOF menunjukkan korelasi yang signifikan dengan IOD. Kondisi ini terlihat selama fase puncak periode IOD bersamaan dengan monsun tenggara konsentrasi klorofil-a meningkat di sepanjang pantai Selat Bali dibandingkan pada musim sebelumnya.
Co-Authors Abu Bakar Sambah Bayu Priyono Daduk Setyohadi Eko Susilo Nadya Christa Mahdalena Rizki Hanintyo Umi Zakiyah, Umi