Japan Geoscience Union Meeting 2014

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

[S-SS25_2PM1] Earthquake prediction

Fri. May 2, 2014 2:15 PM - 4:00 PM 312 (3F)

Convener:*Nozomu Takeuchi(Earthquake Research Institute, University of Tokyo), Chair:Hiroyuki Fujiwara(National Research Institute for Earth Science and Disaster Prevention), Sumio Yoshikawa(Meteorological Research Institute)

2:15 PM - 2:30 PM

[SSS25-01] Foreshock activity of the large-scale interplate earthquakes around Japan

*Rika TANAKA1, Yoshiaki ORIHARA1, Masashi KAMOGAWA1 (1.Dpt. of Phys., Tokyo Gakugei Univ.)

Keywords:Foreshocks, Interplate earthquakes, Accelerating seismicity

According to Bouchon et al. (Nature Geosci, 2013), they reported that the number of foreshocks increased towards the mainshock in the interplate earthquakes around North America and Japan. But, the foreshocks were much less frequent in the intraplate earthquakes. We investigate whether such a clear difference is really found between the interplate earthquakes and the intraplate earthquakes around Japan.