STUDY ON ESTIMATION AND ERROR OF TSUNAMI INITIAL DISPLACEMENT OF WATER SURFACE USING INVERSION METHOD WITH A PRIORI INFORMATION

Abstract

I proposed a new tsunami inversion method with a priori information that the distribution of solution is smooth. An unknown parameter of this inversion method is the water surface displacement on the sea, and the 2-D distribution of water surface displacement can be directly estimated by this method. To clear the error of estimation, the numerical experiments were executed, changing the conditions such as location and number of observation points, and observed time. As a result, it became clear that the error of estimation was strongly concerned with the resolution index of unknown parameters, which was introduced in this study.