Model Pembentukan Eddy Akibat Interaksi Arus dan Topografi di Teluk Palu, Sulawesi Tengah

Authors

  • Sabhan Sabhan Jurusan Fisika Fakultas MIPA Universitas Tadulako
  • Widodo Setiyo Pranowo Departemen Hidrografi, Sekolah Tinggi Teknologi Angkatan Laut (STTAL), Research Cluster of Bina Samudera Ancol Timur, Jakarta, Indonesia. Pusat Riset Kelautan, badan Riset Sumber Daya Manusi Kelautan dan Perikanan, Kementerian Kelautan dan Perikanan-RI. Research Cluster of Bina Samudera, Ancol Timur, Jakarta, Indonesia
  • Mulia Purba Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Jl.Raya Dramaga, Bogor 16680, Jawa Barat, Indonesia
  • Alan Frendy Koropitan Jurusan Fisika, Fakultas MIPA, Universitas Tadulako, Jl. Soekarno-Hatta Km.9 Palu Sulwesi Tengah

DOI:

https://doi.org/10.26418/positron.v10i1.37263

Keywords:

model perpindahan vertikal, massa air, interaksi arus dan tofografi, teluk palu, eddy.

Abstract

Tofografi Teluk Palu unik dengan degradasi kedalaman yang tinggi sehingga membentuk kemiringan lereng yang curam. Tofografi teluk menyebabkan arus pusaran (eddy) membentuk siklonik dan antisiklonik sebagai salah satu penggerak upwelling. Penelitian ini menggunakan model hidrodinamika dengan pendekatan volume hingga dengan koordinat vertikal sigma. Model dibangkitkan oleh pasang surut dan angin. Hasil model menunjukkan korelasi pasang surut (r = 0,9937) yang baik dengan kondisi di Teluk Palu. Eddy Siklonik yang terbentuk mempunyai diameter yang berbeda untuk setiap kedalaman oleh efek dari tofografi aliran di Teluk Palu. Lokasi perpindahan vertikal massa air ke atas yang dikenal sebagai upwelling bersesuaian dengan eddy siklonik yang terbentuk.

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Published

2020-09-16

Issue

Vol. 10 No. 1 (2020): Vol. 10 No. 1 Edition

Section

Articles

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