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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Economics and Business Journal FUNDS: Jurnal Ilmiah Akutansi, Keuangan, dan Bisnis
Rastina
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Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Library & Information Science

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Journal : Jurnal Ilmu dan Teknologi Kelautan Tropis

 1 
Sebaran Suhu Permukaan Laut Teluk Lampung berdasarkan Citra Landsat-8 dan Kaitannya terhadap Indian Ocean Dipole (IOD) Periode Tahun 2013 – 2021: Sea Surface Temperature Distribution in Lampung Bay Based on Landsat-8 Images and its Relation to the Indian Ocean Dipole (IOD) on the Period Year 2013-2021 Nurjaya, I Wayan; Naulita, Yuli; Rastina; Okgareta, Dema
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 3 (2023): 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.v15i3.48441

Abstract

Suhu permukaan laut merupakan parameter oseanografi yang penting di perairan lautan karena perubahan suhu air laut dapat mengubah ekosistem perairan. Perairan Teluk Lampung yang berasal dari Samudera Hindia dan Laut Jawa yang melewati Selat Sunda akan dipengaruhi oleh Indian Ocean Dipole (IOD). Penelitian ini bertujuan untuk menganalisis pola sebaran Suhu Permukaan Laut (SPL) antar-tahun secara spasial dan temporal dalam kurun waktu 9 tahun terakhir (2013-2021) serta menganalisis pengaruh fenomena IOD terhadap anomali SPL di Teluk Lampung. Metode yang digunakan adalah metode uji regresi, metode deskriptif dan statistik korelatif. Hasil menunjukkan bahwa nilai SST dari ekstraksi citra Landsat-8 dapat mewakili kondisi SPL in situ dengan uji regresi R2=0,6872. Fenomena IOD memengaruhi pola sebaran SPL perairan Teluk Lampung terlihat pada fase IOD positif (2015, 2018 dan 2019) atau fase IOD negatif (2013 dan 2016) menunjukkan adanya anomali Sea Surface Temperature (SST) perairan Teluk Lampung. Korelasi antara IOD dan SPL di Teluk Lampung memiliki dua hasil yaitu pada perairan terbuka (TL3, TL4, dan TL5) berkorelasi sedang (r>0,7) dan korelasi lemah (r<0,2) pada titik pengamatan TL1 dan TL6 yang merupakan titik dekat dengan daratan.
Estimasi Kesuburan Perairan Teluk Lampung berdasarkan Vertically Generalized Production Model (VGPM): Estimation of Lampung Bay Waters Fertility Based on Vertically Generalized Production Model (VGPM) Hartanto, Mochamad Tri; Febrianto, Muhammad Riza Hanief; Susanti, Santi; Prartono, Tri; Rastina; Martinez, Stepahnie J.; Zaki, Nurul Hidayah Mat; Effendi, Irzal; Lestari, Dea Fauzia
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 16 No. 3 (2024): 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.v16i3.60125

Abstract

Lampung Bay is an important water crossing in South Sumatra that is greatly influence by anthropogenic activities and oceanographic characteristics. This study characterized and estimated the spatial and temporal Primary Productivity (PP) in the three sections of the bay: head, middle, and mouth. The PP was modeled by using Sea Surface Temperature (SST), chlorophyll-a, Primary Productivity, and Photosynthetically Active Radiation (PAR) collected from remote sensing data and field measurements. Primary productivity was modeled with a Vertically Generalized Production Model (VGPM), and data validation was done using the Root Mean Square Error method. The distribution of PAR in Lampung Bay ranged from 35–52.50 E/m2/day. The distribution of SST ranged from 28.5–31.50°C. The highest distribution of chlorophyll-a was at the hHead of the bay with a range of 0.30-12 mg/m3. Correlation analysis shows that chlorophyll-a had the highest influence on PP (R2=0.99). While the middle and outer areas of the bay have a low average with values of 122.65 and 101.84 gC/m2/year. Our models show that there is high primary production at the Head of the bay, reaching eutrophic and mesotrophic levels. The middle and outer areas of the bay show productivity levels corresponding to mesotrophic and oligotrophic levels.
Karakteristik Pola Arus di Perairan Teluk Jakarta Pada Musim Barat dan Timur: Characteristichs of Current Pattern in Jakarta Bay in The West and East Monsoons Nurjaya, I Wayan; Rastina; Susanti, Santi; Nugraha, Teguh
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

Jakarta Bay is a coastal area influenced by both natural factors (wind, currents, waves) and human activities (residential areas, coastal development, industry, and resource exploitation). The monsoon phenomenon in the Java Sea affects hydrodynamic patterns, especially current dynamics in Jakarta Bay. This study analyzes changes in current patterns during two distinct monsoon seasons (west and east) in 2021 using a hydrodynamic modeling approach. The model was developed using OpenFlows software with input data including bathymetry, tidal, wind, and wave conditions. Model validation was conducted using tidal and current measurements from field observations in March and August 2021. The results show seasonal variations in current direction and velocity, both in tidal phases and non-tidal (residual) currents. The current patterns aligned with seasonal wind directions, indicating a strong monsoonal influence. Model validation using Root Mean Square Error (RMSE) and Taylor diagram analysis demonstrated good agreement between modeled and observed data, confirming the model's reliability. These hydrodynamic modeling results can serve as a foundation for further studies, such as simulations of pollutant, sediment, and debris dispersion in Jakarta Bay.
Co-Authors Dea Fauzia Lestari, Dea Fauzia Febrianto, Muhammad Riza Hanief Hartanto, Mochamad Tri I Wayan Nurjaya Idrus, Muhammad Ishlah Irzal Effendi Martinez, Stepahnie J. Nugraha, Teguh Okgareta, Dema Santi Susanti, Santi Tri Prartono Yuli Naulita Zaki, Nurul Hidayah Mat