The Excitation Source of Tsunami Characteristics on Tokyo Bay - Verification by observation and numerical experiment -

Abstract

Waveform analysis using data by the 2010 Chilean tsunami obtained in Tokyo Bay were carried out. Numerical experiments using single sine wave with various periods in and around the bay were also carried out. Then we conclude that a tsunami in Tokyo Bay is characterized by a tsunami originated from the Seiche excited in Sagami Bay; the Seiche in Sagami Bay is efficiently excited from offshore tsunami whose period is 30 min or more.