Abstract of the 236th meeting of CCEP

  The 236th meeting of the Coordinating Committee for Earthquake Prediction (CCEP) was held at the Kanto Regional Survey Department of the GSI on August 29, 2022. And the meeting was onsite and online confference. Firstly, the nationwide monitoring data of the seismic activity and the crustal deformations were reported. Secondary, the CCEP members discussed the intensive discussion subject "Application of optical fiber sensing technology to seismology and geodesy" was explained. Finally, the purport of next intensive discussion subject "Long-term forecast of crustal earthquakes" was explained.

※The materials on this site are written in Japanese.

• Deliberation about crustal activity monitoring.

1.1 General crustal activities
(1) Seismic activities of Japan.
      p2 (JMA)
(2) Activities of shallow and very-low-frequency earthquakes around Japan.
      p3 (NIED)
(3) Strain changes in Japanese Islands.
      p4 (GSI)

1.2 State of interplate coupling and its change.
(1) Suruga trough, Nankai trough and Nansei islands trench.
      pp5-6, p7(NIED)
      p8, p9 p10(GSI),

1.3 Others
(1) Earthquake in the northern part of Kamikawa region.(Aug. 11)
      pp11-12 (JMA)
      pp13 (GSI)
(2) Seismic activity in Noto region, Ishikawa Prefecture.(Jun. 19,Jun. 20)
      p14-15 (JMA)
      p16-20 (GSI)
(3) Earthquake in off the coast of Ibaraki Prefecture.(May. 22)
      p21 (JMA)
(4) Seismic activity in Kumamoto region, Kumamoto Prefecture.(Jun. 26)
      p22 (JMA)
(5) Seismic activity in off the coast of northwest Okinawa main island.(Mar. 17,Jun. 3)
      p23 (JMA)
      p24 (GSI)



• Intensive discussion "Application of optical fiber sensing technology to seismology and geodesy".

      p26 Convener: Masanao Shinohara (ERI, Earthquake Research Institute, The University of Tokyo)

-Seismic observation at active volcanoes using fiber optic cables and DAS
      p28 Takeshi Nishimura (Tohoku University)
-Detection of slow-to-fast earthquakes using land-based fiber optical cables
      p29 Aitaro Kato (ERI)
-Development and Future Prospects of a DAS-based Fracture Exploration System
     p30 Naoshi aoki (JGI)
-Current status and future prospects of broadband seismic and crustal deformation observation by optical fiber sensing in the seafloor
      p31 Eiichiro Araki (JAMSTEC)

• Purport of next intensive discussion subject "Long-term forecast of crustal earthquakes".

p32 Convener: Takuya Nishimura (Disaster Prevention Research Institute, Kyoto University.)

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