2007 Volume 54 Pages 171-175
Focusing on the scattering of tsuanmi energy by the seamounts, this study aims to discuss the effect of Emperor seamounts on the tsunami propagation of the 2006 Kuril Island tsunami, using a finite difference method. The model results suggest that the contribution of Emperor seamounts on the maximum tsunami energy along the Pacific coast of Japan is as much as 50 % or more. Also, the spectral analysis of the observed tsunami records in Japan indicates that the scattering waves from Kinmei seamount dominate the wave components of 8-20 minutes in its wave period, which is consistent with the theory of Longuet-Higgins (1967).
