2001 Fiscal Year Final Research Report Summary
Asperity Map based on the analysis of historical seismograms in Japan
| Project/Area Number |
12640404
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
固体地球物理学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
YAMANAKA Yoshiko Earthquake Research Institute, The University of Tokyo, Research Associate, 地震研究所, 助手 (30262083)
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| Co-Investigator(Kenkyū-buntansha) |
TAKANO Kiyoshi Earthquake Research Institute, The University of Tokyo, Associate Professor, 地震研究所, 助教授 (80134659)
KIKUCHI Masayuki Earthquake Research Institute, The University of Tokyo, Professor, 地震研究所, 教授 (20046147)
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| Project Period (FY) |
2000 – 2001
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| Keywords | asperity / source process / seismic coupling / historical seismogram / recurrent earthquake |
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| Research Abstract |
During 20th century there occurred many large earthquakes in Japan, which were recorded at observatories of Japan Meteorological Agency (JMA) and Universities. In Japan, the strong motion observation was made from the beginning of 1900's. Using the strong motion record we try to obtain source process of large earthquakes around Japan to make the asperity map.
The characteristics of asperity obtained in this study are as follows:
(1) The size of asperity is characterized in source regions
(2) The rupture propagation is also characterized.
(3) The asperity located away from the hypocenter.
(4) Aftershocks occur around the asperity.
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