Abstract.We have chara to 2012 in Indonesia, based on source parameter analysis. mechanism derived by W phase seismic energy (E) and the the rupture duration (To) and of the earthquakes (24 events) types, a shallow focal depth (12 km (6.6 ≤ M w ≤ 9.0), a low ratio of seismic energy 4.9), a short to long rupture duration (27 s height (0.1 m ≤ H ≤ 50.9 m) and the trench (10 km < characterized by a thrust moderate magnitude (7.5 seismic moment (Θ ≤ -5. tsunami height (7.4 m ≤ the trench (HT ≤ 20 km).Keywords: characteristics; earthquake; W phase; energy. IntroductionAbout 90% of the tsunami generated by earthquakes, depths [1,2]. In the sea region and Molucca, most commonly earthquake-generated tsunamis in faults. Strike-slip fault mechanisms occurred in several area The Papua earthquake-generated and strike-slip faults. ave characterized 27 earthquake-generated tsunamis from 1991 based on source parameter analysis. This includes the focal W phase inversion analysis, the ratio (Θ) between the the seismic moment (M o ), the moment magnitude (M w ), ) and the distance of the hypocenter to the trench. Most of the earthquakes (24 events) were tsunamigenic earthquakes with various fault shallow focal depth (12 km ≤ D ≤ 77.8 km), a small to large magnitude low ratio of seismic energy to seismic moment (-5.8 < Θ < -rupture duration (27 s ≤ To ≤ 257 s), a small to large tsunami ≤ 50.9 m) and a short to long distance from the hypocenter to the trench (10 km < HT ≤ 230 km). Three tsunami earthquakes were fault mechanism, a very shallow depth (D ≤ 20 km), a moderate magnitude (7.5 ≤ M w ≤ 7.8), a very low ratio of seismic energy to 5.8), a long rupture duration (99 s ≤ To ≤ 135 s), a large ≤ H ≤ 14 m) and a short distance from the hypocenter to ; moment; rupture; tsunamigenic earthquake; tsunami energy.

Tsunami modeling with the Manila Trench earthquake source, the Philippines is very necessary as one of the mitigation measures for the prospective nuclear power plant (PLTN) facility in West Kalimantan. In this preliminary study, tsunami modeling using the COMCOT of non linear and the nesting grid method was carried out to obtain an estimate of the height and arrival time of the tsunami at the closest tidal initial points of a nuclear power plant. The Manila Trench is considered as the closed potential sources of earthquake threats to the prospective nuclear power plant site in Gosong Beach, West Kalimantan. The source is divided into 33 multiple segments and accumulated to magnitude 9.1 The results of this study can be used as material for risk assessment for nuclear power plant site development. The results obtained are that the estimated tsunami height at Gosong Beach is around 0.3 – 0.5 meters on the beach with an arrival time of about 550 minutes after the earthquake at its center.

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