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All Journal BAREKENG: Jurnal Ilmu Matematika dan Terapan Jurnal HIDROPILAR
Rusdiansyah, Alfi
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Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Mathematics Mechanical Engineering Physics Transportation

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Pengoperasian Dan Pengolahan Data“Continental Current Profiler” (Studi Kasus Perairan Toli-Toli Sulawesi Tengah) Baharuddin, Baharuddin; Saroso, Saroso; Joko, Tri; Rusdiansyah, Alfi
Jurnal Hidropilar Vol. 1 No. 1 (2015): JURNAL HIDROPILAR
Publisher : Sekolah Tinggi Teknologi Angkatan Laut (STTAL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2099.141 KB) | DOI: 10.37875/hidropilar.v1i1.16

Abstract

Arus mempunyai gerakan air yang sangat luas yang terjadi pada seluruh lautan di dunia. Arus-arus ini mempunyai arti yang sangat penting dalam menentukan arah pelayaran bagi kapal-kapal dalam bernavigasi baik pada permukaan maupun dalam kolom air. Peta arus dibuat oleh para pelaut berabad-abad yang lalu. Pengumpulan data arus dilaksanakan di perairan Toli-Toli Propinsi Sulawesi Tengah dengan satu Stasiun. Lama pengamatan 15 piantan dari tanggal 29 Nopember sampai 14 Desember 2004. Sistem pemasangan alat dengan cara Fixed Structure. Pengolahan datanya menggunakan Sofware Matlab dengan metode Least Square. Dari hasil analisis harmonik arus pasut Dungulan perairan Toli-Toli dapat disimpulkan arus dominan ke arah Timur. Kecepatan arus maksimum Sumbu panjang 14.9 m/dt dengan arah -110°, sumbu pendek 4.8 m/dt dengan arah -20° berlawanan putaran arah jarum jam. Kecepatan arus minimum sumbu panjang 0.2 m/dt dengan arah -12°, sumbu pendek 0.1 m/dt dengan arah 180° searah putaran jarum jam.
NUMERICAL MODELING OF THE 1998 PAPUA NEW GUINEA TSUNAMI USING THE COMCOT Qonita, Zulfa; Karima, Shofia; Rusdiansyah, Alfi; Riyandari, Ritha
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 18 No 1 (2024): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol18iss1pp0349-0360

Abstract

The Papua New Guinea tsunami of 1998 is a unique phenomenon because the source of the tsunami propagation has been speculated. There was a 7.1-magnitude earthquake on July 17, 1998, at 18:49 WIT before the tsunami hit the Aitape area. However, previous studies have shown that the leading cause of the tsunami was not the earthquake but a submarine landslide. One of the steps to simulating the event is to do tsunami modeling. A tsunami propagation simulation will be conducted using Cornell Multi-grid Coupled Tsunami (COMCOT). This simulation was carried out with three scenarios to see which had the most significant effect on the tsunami event. The first scenario uses a tsunami source from a 7.1 magnitude earthquake, the following scenario is carried out using avalanche parameters, and the last scenario is a scenario with a combined source of earthquake and avalanche. The results of this study indicate that underwater landslides are the source of a tsunami similar to the original event.
Co-Authors Abd. Rasyid Syamsuri Baharuddin Baharuddin Karima, Shofia Qonita, Zulfa Riyandari, Ritha Saroso, Saroso