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All Journal BULETIN OSEANOGRAFI MARINA Maspari Journal
M. Albab Al Ayubi, M. Albab Al
Program Studi Ilmu Kelautan FMIPA Universitas Sriwijaya, Inderalaya, Indonesia
Earth & Planetary Sciences

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Identifikasi Massa Air Di Perairan Timur Laut Samudera Hindia Ayubi, M. Albab Al; Surbakti, Heron; Mbay, La Ode Nurman
Maspari Journal : Marine Science Research Vol 5, No 2 (2013): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1846.861 KB) | DOI: 10.36706/maspari.v5i2.2505

Abstract

The northeast Indian Ocean is a region crossed by the monsoon winds and bordered by mainland on northern and eastern side that allegedly the water mass is influenced by these two factors. This research aims to study the vertical dan cross section distribution of physical parameters such as temperature, salinity, and density and also to identify the types of water masses in the region. The data used are the data of temperature, salinity, and density during 2007-2010 is obtained from sensors located on spacecraft of ATLAS Mooring. There are six stations located on the 90oE and from 0-15 oN, with 4 year observation and there are 4 periods each year. The results of observations of temperature on the surface indicates the period from December to February and March to May have a similar pattern. While the pattern in the period from June to August is similar to September-November. In other hand, the temperatures around depth of 140 m to the bottom shows the same pattern throughout the year. Value of the sea surface temperature of the period from March to May is generally the highest. Observations of sea surface salinity and water column generally are the same in each period, the salinity values decreased from a low-latitude station towards the high-latitude stations. The differences found are the highest surface salinity values are more common in the period from December to February, which is found on the station I and III. The result of value sea surface density observations show a decline pattern of low-latitudes stations in to higher latitudes stations throughout the year, or a pattern that tends to the same of salinity pattern. Analysis of the TS diagram refer to Wyrtki (1961) and Emery (2003) indicates there are some type of water masses, ther are namely the Bengal Bay Water (BBW), South Indian Central Water (SICW), Indian Equatorial Water (IEW), Subtropical Lower Water (SLW), and Northern Salinity Minimum (NSM). Those water masses is found in every period, only period from December to February have differrent type of water masses, that is the Arabian Sea Water (ASW).Keywords: ATLAS Mooring, Diagram TS, Indian Ocean, Water Mass
Variabilitas Thermal Front dan Keterkaitan dengan Klorofil-a di Wilayah Pengelolaan Perikanan Negara Republik Indonesia 711 Zandika, Rendy; Ismunarti, Dwi Haryo; Kunarso, Kunarso; Hatmaja, Rahaden Bagas; Ayubi, M. Albab Al
Buletin Oseanografi Marina Vol 13, No 2 (2024): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v13i2.60304

Abstract

memiliki potensi sumber daya kelautan yang besar yang berada pada kawasan Selat Karimata, Laut Natuna, dan Laut Natuna Utara. Penelitian mengenai variabilitas thermal front dan keterkaitan dengan klorofil-a di WPPNRI 711 menjadi informasi yang sangat penting untuk memberikan wawasan yang lebih dalam tentang bagaimana perubahan suhu dan produktivitas biologis saling mempengaruhi. Tujuan penelitian ini adalah untuk mengetahui variabilitas  thermal front dan kaitannya dengan klorofil-a di WPPNRI 711. Penelitian ini menggunakan data SPL, klorofil-a, angin, curah hujan dari website marine.copernicus.eu. Data diolah mengggunakan MATLAB sehingga menghasilkan data, peta, dan grafik dari SPL, thermal front, klorofil-a, curah hujan dan angin dan dianalisis dengan mengkaitkan dengan penelitian sebelumnya menggunakan metode kuantiatif sehingga mendapatkan hasil yang obyektif. Hasil penelitian menunjukkan area thermal front di WPPNRI 711 mencapai nilai tertinggi pada musim barat dengan luas sebesar 386.263 km2 dan area thermal front mencapai nilai terendah pada musim timur dengan luas sebesar 264.058 km2. Keterkaitan klorofil-a dengan thermal front menunjukkan konsentrasi klorofil-a pada daerah thermal front di Pesisir Pulau Sumatera dan Laut Natuna lebih tinggi dengan rata-rata berturut-turut sebesar 3,49 mg/m3 dan 0,16 mg/m3 dibandingkan dengan rata-rata klorofil-a di keseluruhan area Pesisir Pulau Sumatera dan Laut Natuna dengan rata-rata berturut-turut sebesar 2,68 mg/m3 dan 0,14 mg/m3.  Wilayah Pengelolaan Perikanan Negara Republik Indonesia 711 (WPPNRI 711) is a region with significant potential for marine resources located in the Karimata Strait, Natuna Sea, and North Natuna Sea. Research on the variability of thermal fronts and their connection with chlorophyll-a in WPPNRI 711 can provide additional information and deeper insights into how temperature changes and biological productivity mutually influence each other. The aim of this research is to understand the variability of thermal fronts and their correlation with chlorophyll-a in WPPNRI 711. The study utilizes secondary data on Sea Surface Temperature (SPL), chlorophyll-a, wind, and rainfall. The data is processed using MATLAB to generate SPL, thermal front, chlorophyll-a, rainfall, and wind data, as well as maps and graphs. The analysis is conducted by associating the results with previous research using quantitative methods to obtain objective findings.The research findings indicate that the thermal front area in WPPNRI 711 reaches its highest value during the west monsoon season, covering an area of 386,263 km², while the thermal front area reaches its lowest value during the east monsoon season, covering an area of 264,058 km². The correlation between chlorophyll-a and thermal fronts shows that chlorophyll-a concentration in the thermal front areas in the Coastal areas of Sumatra Island and Natuna Sea is higher, with average values of 3.49 mg/m3 and 0.16 mg/m3 respectively, compared to the overall average chlorophyll-a in the Coastal areas of Sumatra Island and Natuna Sea, with average values of 2.68 mg/m3 and 0.14 mg/m3 respectively.
Co-Authors Dwi Haryo Ismunarti Hatmaja, Rahaden Bagas Heron Surbakti Kunarso Kunarso La Ode Nurman Mbay, La Ode Nurman Zandika, Rendy