【摘要】 本文分析了1989年11月2日宁夏固原5.3级地震前后的地震活动,井分析了其序列特征,判定此震为孤立型地震。本文最后介绍了几起震前认识到的前兆观测资料异常现象。更多还原

【Abstract】 This paper analyzes the seismic activities both before and after the M5.3 Guyan, Ningxia earthquake occurred November 2 , 1989. Analysis is also made on the sequence characteristics of the earthquake. It is concluded that the M5.3 Guyuan earthquake was an single and "isolated" event. Finally, the paper introduces several pieces of anomalies detected before the occurrence of the earthquake in the observed precursory data.更多还原