Pre-seismic and Co-seismic Crustal Movements of the M7. 3 Kyushu Earthquake on April 16, 2

Pre-seismic and Co-seismic Crustal Movements of the M7. 3 Kyushu Earthquake on April 16, 2016 in

Japan

Gu Guohua;Wang Wuxing

【期刊名称】《中国地震研究（英文版）》 【年(卷),期】2017(031)004

【摘要】The time series of coordinates of a large number of GPS stations in the world, processedby Prof. Geoffrey Blewitt with GIPSY software are available at http:/ / geodesy. unr. edu. Based on the time series of coordinates in the global reference frame of IGS08 at more than 250 stations of continuous GPS observations, downloaded from the website, the co-seismicdisplacements of the M7. 3 Kyushu earthquake on April 16 , 2016 in Japan and the pre-seismic strain accumulations and displacements in the regional reference frame were obtained. The station of continuous GPS observation at BJFS near Beijing has been quite stable in displacement in the eastern part of China for more than 17 years since the beginning of its operation, and this station is used as the core station in the regionalreference frame for the pre-seismic displacement of the Kyushu earthquake of M7. 3. The main feature of the pre-seismic displacements of the Kyushu earthquake is characterized by locking in the crust at and near the epicenter. The anomalous pre-seismic strain accumulation developed in