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- Title
Tsunami evacuation plans for future megathrust earthquakes in Padang, Indonesia considering stochastic earthquake scenarios.
- Authors
Muhammad, Ario; Katsuichiro Goda; Alexander, Nicholas A.; Kongko, Widjo; Muhari, Abdul
- Abstract
This study develops tsunami evacuation plans in Padang, Indonesia, using a stochastic tsunami simulation method. The stochastic results are based on multiple earthquake scenarios for different magnitudes (Mw 8.5, 8.75, and 9.0) that reflect asperity characteristics of the 1797 historical event in the same region. The generation of the earthquake scenarios involves probabilistic models of earthquake source parameters and stochastic synthesis of earthquake slip distributions. In total, 300 source models are generated to produce comprehensive tsunami evacuation plans in Padang. The tsunami hazard assessment results show that Padang may face significant tsunamis causing the maximum tsunami inundation height and depth of 15 m and 10 m, respectively. A comprehensive tsunami evacuation plan, including horizontal evacuation area maps, assessment of temporary tsunami evacuation shelters, and integrated horizontal-vertical evacuation time maps, has been developed based on the stochastic tsunami simulation results. The evacuation plans highlight that comprehensive mitigation policies can be produced from the stochastic tsunami simulation against the future tsunamigenic events.
- Subjects
INDONESIA; CIVILIAN evacuation; DISASTER relief; CIVIL defense; TSUNAMIS; OCEAN waves
- Publication
Natural Hazards & Earth System Sciences Discussions, 2017, p1
- ISSN
2195-9269
- Publication type
Article
- DOI
10.5194/nhess-2017-75