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Journal : Nekton

Tropical cyclone Lili in the Banda Sea, Indonesia: formation, development, and oceanic interaction Siwasiwan, Moksen; Tubalawony, Simon; Noya, Yunia Anganetjie
Nekton Vol 5 No 1 (2025): Nekton
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/nekton.v5i1.919

Abstract

The Banda Sea serves as Indonesia's central region of water mass circulation and receives water flows from the Pacific Ocean, Indian Ocean, and South China Sea. This unique position facilitates significant interactions between the atmosphere and the ocean. This study aims to assess the dynamic factors supporting tropical cyclone Lili's growth in the Banda Sea. This study uses data from the Climate Data Store (CDS) and Marine Copernicus for May 4-12, 2019. The results show atmospheric dynamics, including the presence of low-pressure zones, high air humidity, and other meteorological factors that support the formation and movement of cyclones. During the study period, oceanographic conditions showed varying wind directions from various sources, hindering the wave formation process. Current patterns were observed moving from Australia through Tanimbar waters towards the Banda, Seram, and Timor Seas. In addition, eddy formation was found in Wetar waters, with downwelling processes occurring in the Banda Sea, while upwelling was detected in eastern Seram waters.
Seasonal Variability of Wind, Surface Current and Sea Surface Temperature in the Eastern Seram Waters During the 2015 Super El Nino Utama, Cipta; Tubalawony, Simon; Waas, Harold Joppie Davido; Hukubun, Ronald Darlly; Wattimena, Marlin Chrisye
Nekton Vol 5 No 2 (2025): (Issue In Progress)
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/nekton.v5i2.1062

Abstract

The eastern Seram waters are influenced by both the Seram Sea and the Banda Sea. This study aimed to examine variations in wind, surface currents, and sea surface temperature (SST) during 2015, coinciding with the super El Niño event. Data were obtained from the Group for High Resolution Sea Surface Temperature (GHRSST) and the Copernicus Marine Environment Monitoring Service (CMEMS). The results indicated that the monthly average wind speed in this area ranged from 0.01 to 8.98 m/s, with the lowest speed in November and the highest from January and June to September. Surface currents also exhibited seasonal variability, flowing from the Seram Sea to the Banda Sea during the west season (December–January) and reversing eastward in February. During the east season, Banda Sea water masses were supplied by Seram Sea water. Sea surface temperature decreased notably from June to August, with the lowest temperature recorded in August due to upwelling in the Banda and Arafura Seas. Surface currents formed eddies with warm water centers in the northern part of eastern Seram waters, and cold water centers (25,4 °C) were also observed. The convergence of these two water masses with distinct characteristics generated thermal fronts with temperature differences, resulting in strong temperature gradients from August to October as a consequence of upwelling and cooling induced by the intense El Niño at the end of 2015.
Klorofil-a dan kaitannya terhadap Produktifitas Primer Perairan Laut Banda pada Fenomena La Nina Uneputty, Brian Abraham Salmon; Tubalawony, Simon; Noya, Yunita Anganetjie
Nekton Vol 2 No 1 (2022): March
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.656 KB) | DOI: 10.47767/nekton.v2i1.326

Abstract

The Banda Sea waters are open waters that have very complex dynamics and water characteristics. Those waters have a diverse underwater topography and are surrounded by many islands, both large and small. In addition, these waters are also strongly influenced by the ENSO phenomenon. The purpose of this study was to analyze the distribution pattern of chlorophyll A in marine waters during the La Nina period and the level of primary productivity. This study uses monthly chlorophyll-a data in 2010, from the MODIS AQUA satellite which is then processed using Surfer-12 software. The results showed that there was a pattern of variation in the distribution of chlorophyll-a in the Banda Sea during the El Nino and La Nina phenomena.