Japan Geoscience Union Meeting 2015

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Oral

Symbol S (Solid Earth Sciences) » S-SS Seismology

[S-SS32] Seismicity

Tue. May 26, 2015 4:15 PM - 6:00 PM A04 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Yoshinari Hayashi(Faculty of safety Science, Kansai University), Chair:Keita Chiba(National research institute for ), Masaru Nakano(Japan Agency for Marine-Earth Science and Technology)

4:45 PM - 5:00 PM

[SSS32-09] Relocation and fault planes of the 1945 Mikawa earthquake

*Nobuo HURUKAWA1 (1.Building Research Institute)

We relocated the mainshock, and its foreshocks and aftershocks of the 1945 Mikawa earthquake (M 6.8) using the modified joint hypocenter determination (MJHD) method in order to obtain their accurate hypocenters and to identify fault planes of the mainshock. We used both P- and S-wave initial arrival times at stations reported by the Japan Meteorological Agency (JMA). We confirmed by relocated hypocenters that the mainshock and aftershocks had occurred along the two fault planes proposed by Takano and Kimata (2009) based on triangulation surveys and surface trace of the earthquake faults.