Japan Geoscience Union Meeting 2015

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Symbol S (Solid Earth Sciences) » S-CG Complex & General

[S-CG65] 20th anniversary of the Kobe earthquake: Progress in the studies of active faults and strong motion

Tue. May 26, 2015 9:00 AM - 10:45 AM A04 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Hisashi Nakahara(Solid Earth Physics Laboratory, Department of Geophysics, Graduate School of Science, Tohoku University), Haruo Horikawa(Active Fault and Earthquake Research Center, National Institute for Advanced Science and Technology), Tadashi Maruyama(Ministry of Education, Culture, Sports, Science and Technology), Chair:Haruo Horikawa(Institute of Earthquake and Volcano Geology, National Institute for Advanced Science and Technology), Tadashi Maruyama(Institute of Earthquake and Volcano Geology, National Institute of Advanced Industrial Science and Technology)

9:25 AM - 9:40 AM

[SCG65-02] Relation between the 1995 Hyogoken-Nanbu Earthquake and the great Keicho Earthquke

*Yoshihisa IIO1 (1.DPRI., Kyoto Univ.)

Keywords:Kobe Earthquake, Nojima Fault, intraplate earthquake, Median Tectonic Line, stress change, recurrence interval

The 1995 Hyogoken-nanbu Earthquake occurred only about 400 years after the previous event, the 1596 great Keicho earthquake. The average recurrence interval of the active fault system from the Rokko Mountain to the east coast of the Awaji Island is estimated to be about 900 ? 2800 years. The interval of about 400 years is much smaller than the average interval of the active fault system, and it can be explained by a break of the region that was not broken by the 1596 earthquake.