Analisis Lokasi Pembangkitan Gelombang Soliton Internal di Selat Alor Berdasarkan Data Pasang Surut dan Citra Satelit
Analysis of Internal Soliton Wave Generation Site in The Alor Strait Based on Tidal Data and Satellite Imagery
DOI:
https://doi.org/10.37875/hidropilar.v11i1.392Keywords:
gelombang soliton internal, Selat Alor, pasang surut, citra SAR, Arlindo, internal solitary waves, Alor Strait, tidal data, SAR imagery, Indonesian ThroughflowAbstract
Selat Alor memiliki karakteristik topografi kompleks dengan variasi kedalaman 400-2800 meter yang berpotensi mendukung pembangkitan gelombang soliton internal (GSI). Penelitian ini bertujuan menganalisis lokasi pembangkitan GSI di Selat Alor berdasarkan korelasi data pasang surut model OTIS dan citra satelit SAR Sentinel-1 periode 2010-2023. Metode analisis kualitatif deskriptif dan komparatif digunakan untuk mengevaluasi hubungan temporal antara kondisi pasang surut dan kemunculan signature GSI pada citra SAR. Hasil penelitian menunjukkan korelasi konsisten antara kondisi spring tide dan kemunculan pola pita gelap-terang karakteristik GSI pada citra SAR. Variabilitas musiman teramati dimana pembangkitan GSI tidak hanya bergantung pada kekuatan arus pasang surut, tetapi juga dipengaruhi stratifikasi massa air dan dinamika Arus Lintas Indonesia (Arlindo). Pengaruh Arlindo sebagai arus latar memberikan kontribusi energi tambahan yang memungkinkan pembangkitan GSI bahkan pada kondisi forcing pasang surut lemah. Karakteristik spasial gelombang menunjukkan multiple generation sites dengan fenomena interaksi antar paket gelombang. Temuan ini mengkonfirmasi bahwa Selat Alor merupakan hotspot pembangkitan GSI yang signifikan di sisi selatan kepulauan Indonesia dengan implikasi regional terhadap dinamika oseanografi timur Indonesia, mixing vertikal, dan transport massa air.
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