Abstract of the 227th meeting of CCEP

  The 227th meeting of the Coordinating Committee for Earthquake Prediction (CCEP) was held at the email conference of the GSI on May. 20-22, 2020. Nationwide monitoring data of seismic activities and crustal deformations were reported. On the other hand, under the influence of COVID-19, the intensive discussion subject "Future vision for monitoring of crustal activity around Japan" postponed.

• Deliberation about crusutal activity monitoring.

1.1 General crustal activities
(1) Seismic activities of Japan
      　p3 (JMA)
(2) Activities of shallow and very-low-frequency earthquakes around Japan
      　p4 (NIED)
(3) Strain changes in Japanese Islands
      　p5 (GSI)

1.2 Stuck state of plate boundary and its change
(1) Suruga trough, Nankai trough and Nansei islands trench
      　pp6-7 (NIED)
      　pp8-9,11-14 (GSI)
      　p10 (JAMSTEC)

1.3 Others
(1) Earthquake in the Noto Peninsula of Ishikawa Prefecture (Mar. 13, 2020 M5.5)
      　p15 (JMA)
(2) Earthquake in the chubu region of the Nagano Prefecture (Apr. 23, 2020 M5.5)
      　pp16-17 (JMA)

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