TSUNAMI EARLY WARNING SYSTEM IN MALAYSIA
Supervisor: Yohei HASEGAWA, Yosuke IGARASHI
This study is on how to make the database for tsunami forecast using the tsunami simulation, retrieve and apply it to the Tsunami Early Warning System messages. Firstly, we searched the seismicity around Malaysia and found out the tsunamigenic earthquakes by comparing the earthquake event with the tsunami record. The earthquake events shallower than 100 km and trench area were considered the potential tsunami source. The most appropriate forecast points were determined by setting up and examining candidates along the coast of Malaysia, each of which has 4-minutes, 10-minutes, 20-minutes distance from the coast and they were with the 10-minutes intervals along the coast. Later, magnitude and depth interval are set up by considering the historical events. The magnitude intervals are 6.6, 7.2, 7.8, and 8.4, and depth intervals are 30 km, 50 km, 70 km and 90 km. The tsunami simulation is run for all the set up tsunami source and the result of tsunami height and travel time for all the forecast points are input into the database. The location of tsunami source is calculated using interpolation or extrapolation.
|Citation: ||Bulletin of IISEE, 42, 133-138.|