Karakteristik Arus Laut Permukaan dan Suhu Permukaan Laut di Perairan Sulawesi Tenggara–Laut Banda saat ENSO

Fadhila Aulia Sulidadi, Latifah Nurul Qomariyatuzzamzami, Avrionesti Avrionesti, Aditya Mulya

Abstract


Perairan Sulawesi Tenggara–Laut Banda merupakan bagian dari jalur Arus Lintas Indonesia (ARLINDO) yang dipengaruhi oleh variabilitas iklim global, termasuk El Niño–Southern Oscillation (ENSO). Penelitian ini bertujuan menganalisis karakteristik arus laut permukaan dan suhu permukaan laut (SPL) di Perairan Sulawesi Tenggara–Laut Banda selama periode September–November (SON) pada fase El Niño kuat, La Niña kuat, dan netral. Data arus laut permukaan dan SPL diperoleh dari Copernicus Marine Environment Monitoring Service (CMEMS) periode 2010–2024 dan dianalisis menggunakan metode komposit berdasarkan Oceanic Niño Index (ONI). Hasil penelitian menunjukkan bahwa fase El Niño kuat memiliki kecepatan arus laut permukaan rata-rata tertinggi sebesar 0,191 m/s dengan SPL rata-rata terendah sebesar 28,463°C, sedangkan fase La Niña kuat memiliki kecepatan arus rata-rata terendah sebesar 0,127 m/s dengan SPL rata-rata tertinggi sebesar 29,398°C. Pada fase netral, kecepatan arus laut permukaan rata-rata sebesar 0,130 m/s dengan SPL rata-rata sebesar 29,053°C. Pola arus pada ketiga fase memperlihatkan arah aliran yang bervariasi disertai pembentukan eddies, dengan eddies paling dominan terbentuk pada fase La Niña kuat dibandingkan fase lainnya. Perbedaan karakteristik arus tersebut diikuti oleh perubahan SPL, yaitu kecepatan arus yang lebih tinggi berkaitan dengan SPL yang lebih rendah akibat meningkatnya pencampuran massa air dari lapisan bawah.


Keywords


Arus Laut Permukaan;ENSO;Suhu Permukaan Laut;Laut Banda.

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References


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DOI: https://doi.org/10.35308/jlik.v8i2.15935

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