Report of activity

Abstract of the 219th meeting of CCEP

The 219th meeting of the Coordinating Committee for Earthquake Prediction (CCEP) was held at the Kanto Regional Survey Department of the GSI on May 25, 2018. Firstly, nationwide monitoring data of the seismic activity and the crustal deformaitons were reported. Secondary, the CCEP members discussed the intensive discussion subject "Earthquakes and water". Finally, the purport of next intensive discussion subject "Huge earthquake in Chishima Trench, off the east coast of Hokkaido and in Northern Sanriku" was explained.

Deliberation about crusutal activity monitoring.

1.General crusutal activities
（1）Seismic activities of Japan.
     p3 (JMA)
（2）Activity of shallow very low frequency earthquakes around Japan.
     p4 (NIED)
（3）Strain changes in the Japanese Islands.
     p5 (GSI)

1.2 Stuck state of plate boundary and its change.
     pp6-8 (NIED)
     pp9-10 (GSI)

1.3 Others.
（1)Earthquakes off the southeast coast of Nemuro Peninsula.
     p11 (JMA)
（2)Earthquake in the northern Nagano Prefecture.
     p12 (JMA)
（3)Earthquake in the western Shimane prefecture.
     p13 (JMA)
     p14 (GSI)
（4)Earthquake near Iriomote Island.
     p15 (JMA)

Earthquakes and water p19 (Convener: Kazutoshi Imanishi, AIST)

     Role of water to earthquake occurrence p21 (Aitaro Kato, ERI,Tokyo Univ.)
     Stress and the role of fluids in the occurrence of earthquakes p22 (Toshiko Terakawa, Nagoya Univ.)
     Relationship between swarm earthquake and crustal fluid in Hakone volcano p23 (Yohei Yukutake, Hot Springs Research Institute of Kanagawa Prefecture)
     Long and short term fluid-injection-induced earthquake p24 (RAI Kyorin, AIST)
     Fluid distribution in the crust estimated by seismic velocity and electric conductivity p25 (Tohru Watanabe, Toyama Univ. )
     Relationship between temperature and dehydration distributions of the oceanic plates and generation of microearthquakes beneath Kanto p26 (Shoichi Yoshioka, Kobe Univ. )

Purport of next intensive discussion subject "Huge earthquake in Chishima Trench, off the east coast of Hokkaido and in Northern Sanriku ".

p27 (Convener: Kenji Satake, ERI,Tokyo Univ.)

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