Western Sumatra region is tectonically active region that often lead to catastrophic earthquakes and tsunamis. When the tsunami disaster will occur and how big run-ups and expansion of the resulting tsunami inundation, could be the arrival time calculation and simulation, it is done by creating a scenarios tsunami modeling before the real tsunami is occured. To generate a tsunami modeling in large quantities will require a variety of mechanisms fault scenarios, subsequently scenarios variations are grouped in segments taken in areas prone to tsunamis, so that the database does not widen. This scenarios is based on the values of fault parameters and modified in such a way as to produce the type of fault models with historical data approach the mechanism of fault conditions in that segment. As another reference to estimate the location of disturbances in these segments, done by observing the deformation history of geological processes and the relative movement of the earth's crust. Then do as well the validity of the calculation results with historical data and the results of a survey on the same segment.
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.
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