中国地震局地球物理研究所中国数字地震台网数据管理中心(CDSN DMC)根据美国地震联合研究会数据管理中心(IRIS DMC)发布的2013年1—4月全球地震动态,通过修订后给出以下监测结果。2013年1—4月全球共发生M≥5.5地震202次,其中,东半球152次,西半球50次。东半球发生M 5.5—5.9中强震121次,M 6.0—7.9强震26次,M 8.0—8.9强震1次。西半球发生M 5.5—5.9中强震 China Earthquake Administration Institute of Geophysics China Digital Seismograph Network Data Management Center (CDSN DMC) According to the Global Seismic Dynamics from January to April 2013 released by the IRIS DMC, the revised version gives the following Monitoring results. There were 202 M≥5.5 earthquakes in the world from January to April 2013, of which 152 were in the eastern hemisphere and 50 in the western hemisphere. In the eastern hemisphere, there were 121 moderate M 5.5-5.9 earthquakes, 26 strong M 6.0-7.9 earthquakes and 1 strong M 8.0-8.9 earthquakes. The M 5.5-5.9 moderate strong earthquake occurred in the western hemisphere