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Variability and Correlation among SST, Chlorophyll-a Levels, ENSO, and Pelagic Fishing in Southern Part of Madura Strait, Indonesia, Based on Landsat 9 OLI/TIRS Imagery
Corresponding Author(s) : Naufal Setiawan
Geomatics and Environmental Engineering,
Vol. 18 No. 5 (2024): Geomatics and Environmental Engineering
Abstract
Indonesia’s marine resources are abundant, with fishing being a primary focus. The effective management of these resources requires an understanding of the factors that influence them, such as sea surface temperature (SST), El Niño-Southern Oscillation (ENSO) as indicated by the Southern Oscillation Index (SOI), and chlorophyll-a levels as food sources. This research aimed to elucidate the relationships among those factors at Madura Strait by utilizing their characteristics in response to the electromagnetic wavelengths that can be found Landsat 9 OLI/TIRS satellite images.
This research utilized the satellite’s Thermal Infrared Sensor (or Band 10) (10.6–11.19 µm) to obtain the SST levels as well as the OceanColor 2 (OC2) algorithm to process Band 2 (0.45–0.51 µm) and Band 3 (0.53–0.59 µm) in order to obtain the chlorophyll-a levels. The results were the mean values of the SST (21.42 and 20.60°C) and the chlorophyll-a levels (0.77 and 0.87 mg/m3) from the periods of June through August 2022 and December 2022 through February 2023, respectively. Furthermore, a correlation test and t-test were conducted, which indicated that the chlorophyll-a levels were contradictory with the SST, SOI, and total pelagic fish catches (which were in alignment). The t-test results only indicated significant correlations between the SST and chlorophyll-a levels (–0.806) and between the SST and SOI (0.732), while the other correlation was not significant.
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References
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Ma’mun A., Priatna A., Amri K., Nurdin E.: Hubungan Antara Kondisi Oseanografi dan Distribusi Spasial Ikan Pelagis di Wilayah Pengelolaan Perikanan Negara Republik Indonesia (WPP NRI) 712 Laut Jawa. Jurnal Penelitian Perikanan Indonesia, vol. 25(1), 2019, pp. 1–14.
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Wirasatriya A., Prasetyawan I.B., Triyono C.D., Maslukah L.: Effect of ENSO on the variability of SST and Chlorophyll-a in Java Sea. IOP Conference Series: Earth and Environmental Science, vol. 116(1), 2018, 012063. https://doi.org/10.1088/1755-1315/116/1/012063.
Wang M., Guo J.R., Song J., Fu Y.Z., Sui W.Y., Li Y.Q., Zhu Z.M., Li S., Li L.L., Guo X.F., Zuo W.T.: The correlation between ENSO events and sea surface temperature anomaly in the Bohai Sea and Yellow Sea. Regional Studies in Marine Science, vol. 35, 2020, 101228. https://doi.org/10.1016/j.rsma.2020.101228.
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Isa N.S., Akhir M.F., Kok P.H., Daud N.R., Khalil I., Roseli N.H.: Spatial and temporal variability of sea surface temperature during El-Niño Southern Oscillation and Indian Ocean Dipole in the Strait of Malacca and Andaman Sea. Regional Studies in Marine Science, vol. 39, 2020, 101402. https://doi.org/10.1016/j.rsma.2020.101402.
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Lillesand T., Kiefer R.W., Chipman J.: Remote Sensing and Image Interpretation. 7th ed. John Wiley & Sons, 2015.
Milne B.F., Toker Y., Rubio A., Nielsen S.B.: Unraveling the intrinsic color of chlorophyll. Angewandte Chemie International Edition, vol. 54(7), 2015, pp. 2170–2173. https://doi.org/10.1002/anie.201410899.
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Wijaya A., Zakiyah U.M.I., Sambah A.B., Setyohadi D.: Spatio-temporal variability of temperature and chlorophyll-a concentration of sea surface in Bali Strait, Indonesia. Biodiversitas Journal of Biological Diversity, vol. 21(11), 2020, pp. 5283–5290. https://doi.org/10.13057/biodiv/d211132.
Puspasari R., Rahmawati P.F., Prianto E.: The effect of ENSO (El Nino Southern Oscillation) phenomenon on fishing season of small pelagic fishes in Indonesia waters. IOP Conference Series: Earth and Environmental Science, vol. 934(1), 2021, 012018. https://doi.org/10.1088/1755-1315/934/1/012018.
Maisyarah S., Wirasatriya A., Marwoto J., Subardjo P., Prasetyawan I.B.: The effect of the ENSO on the variability of SST and chlorophyll-a in the South China Sea. IOP Conference Series: Earth and Environmental Science, vol. 246(1), 2019, 012027. https://doi.org/10.1088/1755-1315/246/1/012027.
Dwiyanti A., Maslukah L., Rifai A.: Pengaruh Suhu Permukaan Laut (SPL) dan Klorofil-A Terhadap Hasil Tangkapan Ikan Layang (Decapterus macrosoma) di Perairan Kabupaten Rembang, Jawa Tengah. Indonesian Journal of Oceanography, vol. 4(4), 2023, pp. 109–120. https://doi.org/10.14710/ijoce.v4i4.15708.
Ahmad K., Conci N., Boato G., De Natale F.G.: USED: A large-scale social event detection dataset. [in:] MMSys ’16: Proceedings of the 7th International Conference on Multimedia Systems: Klagenfurt, Austria, May 10–13, 2016, Association for Computing Machinery, New York 2016, pp. 1–6. https://doi.org/10.1145/2910017.2910624.
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