Report of activity
Abstract of the 247th meeting of CCEP
The 247th meeting of the Coordinating Committee for Earthquake Prediction (CCEP) was held at the Kanto Regional Survey Department of the GSI on May 20, 2025. And the meeting was onsite and online confference. Firstly, the nationwide monitoring data of the seismic activity was reported. Secondary, the CCEP members discussed the intensive discussion subject "Earthquakes in the Hyuga-nada region" was explained. * The materials on this site are written in Japanese.
１.Board Members
Prof. Toda of Tohoku University was elected as the new chairman. Then, Prof. Toda designated Prof. Takahashi (Hokkaido Univ.) and Prof. Shinohara (Earthquake Research Institute, The University of Tokyo) as the vice-chairman, and Prof. Shinohara as the leader of steering subcommittee.
２.Monitoring Crustal Deformation
2.1 General crustal activities
(1) Seismic activities of Japan.
p3 (JMA)
(2) Strain changes in Japanese Islands.
p4-5 (GSI)
2.2 State of interplate coupling and its change.
(1)Nankai trough and Nansei islands trench.
p6 (NIED)
p7-9 (GSI)
p10-12 (GSI)
p12-15(GSI)
p16-19(GSI)
2.3 Others
(1) Seismic activity of the "2024 Noto Peninsula Earthquake" (largest earthquake during February 2025- April 2025: February 24, M4.9)
p20-21 (JMA)
p22 (ERI)
p23 (ERI)
(2) Earthquake in northern Nagano Prefecture (April 18, M5.1)
p24 (JMA)
(3) Earthquake off the east coast of the Osumi Peninsula (April 2, M6.1)
p25 (JMA)
p26 (GSI)
(4) Myanmar earthquake (March 28 Mw7.7)
p27-28 (JMA)
p33 (GSI)
３.Intensive discussion - "Earthquakes in the Hyuga-nada region"-
p35-36 Convener：Yuji Yagi(Tsukuba University)
-Characteristics of seismic activity in Hyuga-nada
p37 Yusuke Yamashita(Miyazaki Public University)
-Fault model construction of the 1662 Hyuga-nada earthquake and consideration of the tsunami inundation area
p38 Kei Ioki(AIST)
-Coseismic Slip and Early Afterslip of the 2024 Hyuganada Earthquake Modulated by a Subducted Seamount
p39 Yuji Ito (ERI)
-Relationship between earthquakes occurring in the northern part of the Hyuga-Nada and megathrust earthquakes along the Nankai Trough
p40 Takane Hori (JAMSTEC)
４.Purport of next intensive discussion "Changing concepts regarding earthquake prediction and forecasting".