HR: 1340h
AN: S53A-1039    [Abstracts]
TI: Deep-ocean tsunami modelling based on the teleseismic source model of the 2006 Kuril earthquake
AU: * Baba, T
EM: babat@jamstec.go.jp
AF: IFREE/JAMSTEC, 3175-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0011, Japan
AU: Cummins, P R
EM: phil.cummins@ga.gov.au
AF: Geoscience Australia, PO Box 378, Canberra, ACT 2601, Australia
AU: Thio, H K
EM: Hong_Kie_Thio@URSCorp.com
AF: URS Group Inc., Pasadena, California, 0000, United States
AU: Tsushima, H
EM: tsushima@aob.geiphys.tohoku.ac.jp
AF: Tohoku University, 6-6 Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
AB: The importance of tsunami modelling has increased since the 2004 Sumatra-Andaman earthquake and the Indian Ocean tsunami that followed it. A magnitude 8.3 earthquake occurred in the Kuril subduction zone on 15 November, 2006 and resulted in teletsunamis widely recorded by bottom pressure recorders deployed in the northern Pacific Ocean. Because these recordings were unaffected by shallow complicated bathymetry near the coast, this provides a unique opportunity to investigate whether seismic rupture models can be inferred from teleseismic waves with sufficient accuracy to be used to forecast teletsunamis. In this study, we estimated the rupture model of the 2006 Kuril earthquake by inverting the teleseimic waves and used that to model the tsunami source. The tsunami propagation was then calculated by solving the linear long-wave equations. We finally found that the simulated 2006 Kuril tsunamis compared very well to the ocean bottom recordings when simultaneously using P and surface waves in the teleseismic inversion.
DE: 4564 Tsunamis and storm surges
DE: 7215 Earthquake source observations (1240)
SC: Seismology [S]
MN: 2007 Fall Meeting