摘要
地震观测数据是地震预测的基础性数据,利用完整的地震目录掌握大震前后地震序列的频度等分布特征,对准确识别前震序列类型,及地震短临预报有重大意义。本文介绍了1975年营口海城地震以来海城老震区地震目录的补充修正工作,并对该地区的地震活动规律进行了分析。
Observation data is the basic data for earthquake prediction.The frequency distribution characteristics of the seismic sequence before and after the large earthquake can be concluded by using a complete earthquake catalogue.It is significant to identify the foreshock sequence type accurately,so is the short-impending earthquake prediction.This paper introduces the supplement and correction work of the earthquake catalogue after the large earthquake occurred in 1975.And the seismic activity routines in this area have been analyzed.