Pemodelan Tsunami di Sekitar Laut Banda dan Implikasi Inundasi di Area Terdampak

Rahmawati, Nisrina Ikbar (2017) Pemodelan Tsunami di Sekitar Laut Banda dan Implikasi Inundasi di Area Terdampak. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Hasil penelitian memperlihatkan bahwa 67% tsunami terjadi di Indonesia timur, salah satunya di sekitar laut Banda. Penelitian terbaru membuktikan adanya palung terdalam Indonesia di Laut Banda, yang pernah memicu tsunami besar pada tahun 1674. Oleh karena itu, pemodelan tsunami di wilayah tersebut penting dilakukan sebagai upaya mitigasi tsunami di masa datang. Penelitian ini bertujuan untuk memodelkan sumber, penjalaran dan run-up tsunami di sekitar Laut Banda serta menganalisis inundasi di area terdampak menggunakan software L2008. Pemodelan tsunami dilakukan menggunakan skenario gempabumi 26 Desember 2009 dengan memodifikasi kekuatan menjadi Mw=8.3, kedalaman 33 km dan mekanisme sumber gempabumi ditentukan dengan software ISOLA. Dimensi patahan dan slip diperkirakan menggunakan persamaan empiris dari Papzachos (2004), Hanks and Kanamori (1979) dan Wells & Coppersmith (1984). Analisis inundasi mengacu pada persamaan Hills, J. G. & Mader, C. L., 1997. Hasil pemodelan tsunami menunjukkan nilai vertical displacement maksimal sekitar 7,7 m, penjalaran tsunami ke segala arah dan pertama kali memasuki daerah Seram bagian timur pada menit ke 05.40. Run up tertinggi dijumpai di Tual sekitar 7,71 m dan inundasi tsunami berkisar antara 64,18 m di Kepulauan Aru hingga 1.009,49 m di Kota Tual. =============================================================== Research results show that 67% of tsunamis occur in eastern Indonesia, one of them around in Banda Sea. Rcent research proves the existence of the deepest trench in the Banda Sea, Indonesia that has ever triggered a huge tsunami in 1674. Therefore, modeling of tsunami in the area an important as mitigation effort of tsunami in the future. The research aims to modeling the source, wave propagation, and run up tsunami around the Banda Sea as well as analyzing inundation in the affected areas using software L2008. Tsunami modeling is done using the earthquake scenario, on December 26, 2009 by modifying the strength to Mw-8,3 , the depth of 33 km and source mechanism of earthquake is determined by software ISOLA. The dimension of fault and slip is estimated using the empirical equation of Papzachos (2004), Hanks and Kanamori (1979) dan Wells & Coppersmith (1984). Inundation analysis refers to the equation of Hills, J. G. & Mader, C. L., 1997. Tsunami modeling results show the value of vertical displacement of approximately 7,7 meters, propagation tsunamis in all directions and first entered the East Seram in minute to 05.40. Run Up the highest found in Tual about 7,71 meters and inundation of tsunami ranges from 64,18 meters in Aru Island up to 1009,49 meters in the town of Tual.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Inundasi, L2008, Pemodelan Tsunami, Run Up, Tsunami Modeling
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QE Geology > QE601 Geology, Structural
Divisions: Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User: - Nisrina Ikbar Rahmawati
Date Deposited: 29 Sep 2017 07:29
Last Modified: 06 Mar 2019 04:24
URI: http://repository.its.ac.id/id/eprint/44476

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