Abstract of the 223rd meeting of CCEP

  The 223rd meeting of the Coordinating Committee for Earthquake Prediction (CCEP) was held at the Kanto Regional Survey Department of the GSI on May 22, 2019. Firstly, nationwide monitoring data of the seismic activity and the crustal deformaitons were reported. Secondary, the CCEP members discussed the intensive discussion subject "Crustal activities of coastal areas in southwest Japan". Finally, the purport of next intensive discussion subject "Rheology and seismic activity in the crust and upper mantle beneath the Japanese Islands." was explained.

• Organization of the 26th CCEP.

Prof. Yamaoka of Nagoya University was elected as the new chairman. Then, Prof. Yamaoka designated Prof. Matsuzawa (Tohoku Univ.) and Prof. Obara (Tokyo Univ.) as the vice-chairman, Prof. Matsuzawa as the leader of East Japan subcommittee, Prof. Hirata (Tokyo　Univ.) as the leader of Central Japan subcommittee, Prof. Shibutani (Kyoto Univ.) as the leader of West Japan subcommittee, and Prof. Obara as the leader of intensive discussion subject subcommittee.



• Deliberation about crusutal activity monitoring.

1.General crustal activities
（1）Seismic activities of Japan.
     p4 (JMA)
（2）Activity of shallow very low frequency earthquakes around Japan.
     p5 (NIED)
（3）Strain changes in the Japanese Islands.
     p6 (GSI)
（4）Seafloor movements observed by seafloor geodetic observations around Japan.
     pp7-8 (JCG)

1.2 Stuck state of plate boundary and its change.
（1)Suruga trough, Nankai trough and Nansei shoto trench.
     p9 (JCG)
     pp10-14 (NIED)
     pp15-16 (GSI)
     pp15-16 (GSI)
     pp17-18 (GSI)
     pp21-22 (JMA)
     pp23-24 (GSI)

1.3 Others.
（1)The Hokkaido east central Iburi earthquake. (Feb. 21, 2019)
     pp19-20 (JMA)
（2)The Offshore Tanegashima earthquake and its postseismic deformation. (Jan. 8, 2019)
     p25 (GSI)
（3)Crustal deformation in the Sakishima-shoto area.
     pp26-27 (GSI)


• Intensive discussion " Crustal activities of coastal areas in southwest Japan"
        p29 Convener: Masanao Shinohara (Earthquake Research Institute, The University of Tokyo)

      Examination of tsunami history based on the sediment survey in the Japan Sea side, South-West Japan
     　p31 Atsushi Urabe (Niigata University)
      Seismogenic source faults in southwest Japan and southern part of the sea of Japan
     　p32 Hiroshi Sato (Earthquake Research Institute, The University of Tokyo)
      Tsunami heights along the Japan Sea coast from submarine active faults in the Southwest Sea of Japan
     　p33 Kenji Satake (Earthquake Research Institute, The University of Tokyo)
      Stress accumulation rate on the source faults in Southwest Japan due to the locking of the Nankai trough
     　p34 Akinori Hashima (Earthquake Research Institute, The University of Tokyo)


• Purport of next intensive discussion subject " Rheology and seismic activity in the crust and upper mantle beneath the Japanese Islands".

     　p35 Convener: Toru Matsuzawa（Tohoku university)


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