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本文根据1488年到1979年期间四川省大量县志,地方志等历史文献和现今气象资料的分析,发现降水与强震有一定的关系。震前表现为以干旱为主的特点,而且其空间分布有分区性的特征。同时对1976年松平7.2级地震前降水异常特征进行了讨论。认为今后在中长期预报的地震危险区,加强降水异常的观测和研究将有助于地震的短临预报。
Based on the analysis of historical documents and historical meteorological data of a large number of counties, magazines and historical records in Sichuan Province from 1488 to 1979, it is found that there is a certain relationship between precipitation and strong earthquakes. Before the earthquake, it was characterized by drought, and its spatial distribution was zonal. At the same time, the characteristics of anomalous precipitation before the M7.2 earthquake in 1976 are discussed. In the future, it is considered that strengthening the observation and research of anomalous precipitation will help short-term and short-term earthquakes prediction in the medium- and long-term earthquake risk area.