Development of next generation ground motion prediction equation applicable to mega earthquakes

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420542
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Tohoku University
• Principal Investigator: Ohno Susumu 東北大学, 災害科学国際研究所, 准教授 (40361141)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 巨大地震 / 地震動評価式 / ニューラルネットワーク

Outline of Final Research Achievements

The purpose of this study is developing next-generation ground motion prediction equations (GMPE) that are applicable to mega earthquakes and the prediction errors to be small. At first, strong-motion database including mega earthquakes are constructed. Using this database, both of ordinary GMPE with small parameters by regression analysis and artificial neural network (ANN) with many parameters by using deep learning method are evaluated. The prediction errors by the ANN become smaller than those of the ordinary GMPE, while ANN's applicability to extended faults and stability are still to be investigated.

Free Research Field

地震工学