Penentuan Tinggi dan Waktu Tempuh Penjalaran Gelombang Tsunami Menggunakan Model Numerik Linier Tunami N1 di Pantai Kabupaten Padang Pariaman dan Kota Pariaman Sumatera Barat

Authors

  • Dwi Pujiastuti Jurusan Fisika FMIPA Universitas Andalas Padang, Indonesia

DOI:

https://doi.org/10.25077/jif.1.1.17-25.2009

Abstract

Penelitian ini difokuskan untuk menentukan tinggi dan waktu tempuh serta visualisasi penjalaran gelombang tsunami dari pusat pembangkitan sampai kawasan pantai menggunakan model numerik linier TUNAMI N1. Dalam penelitian ini digunakan tiga model skenario penjalaran gelombang tsunami yaitu untuk magnitudo (Mw) 7,5, 8,0 dan 8,5 dengan titik koordinat gempa 99,3 BT dan 3,3 LS. Hasil penelitian di Kabupaten Padang Pariaman dan Kota Pariaman menyatakan bahwa terjadi penurunan muka air laut setelah terjadinya gempa besar sebelum gelombang tsunami sampai di titik tinjauan. Tinggi gelombang tsunami paling besar dihasilkan pada skenario pemodelan Mw 8,5. Daerah yang mengalami tinggi gelombang paling besar adalah Ketaping (4,50 m), selanjutnya disusul oleh Pariaman Tengah (3,85 m) dan terakhir Sungai Limau (3,09 m). Waktu tempuh penjalaran gelombang tsunami dari pusat pembangkitan ke titik tinjau pasang surut paling cepat dihasilkan pada pemodelan skenario Mw 8,5. Daerah yang paling cepat dihantam gelombang tsunami setelah terjadinya gempa adalah Ketaping (2545 detik), selanjutnya disusul oleh Pariaman Tengah (2659 detik) dan terakhir di Sungai Limau (3057 detik)

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References

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Published

2009-03-20

How to Cite

Pujiastuti, D. (2009). Penentuan Tinggi dan Waktu Tempuh Penjalaran Gelombang Tsunami Menggunakan Model Numerik Linier Tunami N1 di Pantai Kabupaten Padang Pariaman dan Kota Pariaman Sumatera Barat. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, 1(1), 17–25. https://doi.org/10.25077/jif.1.1.17-25.2009

Issue

Vol. 1 No. 1 (2009): March 2009

Section

Riset Artikel

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