【摘要】 通过对宜宾北4.7级地震震中及附近地区地震地质、地震活动背景、区域地震活动性、水位资料的分析,表明宜宾北4.7级地震震前经历了区域地震活跃至平静、再发震的过程,其部分地震学参数存在异常,川12井水位也出现较大异常,并对宜宾北所处的华蓥山断裂带上的中强震与川滇交界附近地区南北地震带上的强震存在较高的对应关系成因进行了分析,认为华蓥山断裂带上中强地震活动对川滇交界地区南北地震带上强震的发生存在中短期预报意义。更多还原

【Abstract】 Through the analysis the seismic geology of adjacent region, seismic background, the seismic activity features, water level material for M 4.7 Yibin earthquake, we found that the seismicity was very active to silence, then earthquake occurred, many seismological data and water level of the 12th well of Sichuan Province were abnormal before the earthquake. Author explained the reason of earthquake occurrence. The earthquake occurrence on Huayingshan fault had medium and short prediction meaning to the strong earthquakes of Sichuan Province and Yunnan Province.更多还原