【摘要】 2002年3月3日大桥水库诱发了ML 4.4水库地震,根据大桥台网7年多库区地震观测事件记录,用基于GIS的地震分析预报系统进行分析,在4.4级水库诱发地震前,库区内有分布密集、频次超高、震级偏低的近地表地震活动,以致库区内地震存在b值与h值等地震学异常。更多还原

【Abstract】 A ML 4.4 induced reservoir earthquake occurred on March 3, 2002 in the Daqiao reservoir. With the synthetic seismic analysis prediction system based on GIS, records over seven years from Daqiao reservoir seismic telemetry network were analyzed. Before the ML 4.4 earthquake, there was earthquake activity with high frequency, depths near the free surface and lower magnitude. There were the seismic anomalies is higher b and h value for the earthquakes in and near the Daqiao reservoir area.更多还原