1987年1月6日凌晨,新疆拜城县境内发生5.9级中强地震,作者对这次地震进行了考察,现将这次地震的有关情况叙述如下。1.前兆信息近十余年来,天山南缘东段(即库尔勒至乌什一带)4.0级以上地震活动,大致以1979年库车6.0级地震为界分为两个阶段:1971年至1979年该区地震比较活跃,连年发生5级以 In the early morning of January 6, 1987, a moderate-to-moderate 5.9-magnitude earthquake hit Baicheng County, Xinjiang. The author conducted an investigation of the earthquake. The relevant circumstances of the earthquake are described below. 1. Precursory Information For the past ten years or so, the seismic activity above the 4.0 magnitude in the eastern segment of the southern margin of the Tianshan Mountains (ie, the area from Korla to Wushi) is roughly divided into two stages by the 1979 Kumah M 6.0 Mudstone: the period from 1971 to 1979 Earthquake in the area more active in successive years to 5 to