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一、引言 2001年11月14日发生在新疆—青海昆仑山口西的8.1级地震,是本世纪以来中国大陆发生的最大的一次地震,因该震源区附近无任何观测手段,为无监测能力区。但震后我们发现在8.1级地震所波及范围内的各观测手段都有不同程度的长、中、短期及震时异常。在震源区东部的四川、甘肃、宁夏等省跨断层位移观测点均出现不同程度的异常,但当时却未能用这些异常预测出8.1级地震的发震区,这主要是由于构造结构不同使得孕震过程
I. INTRODUCTION The magnitude 8.1 earthquake that occurred on the west of Kunlun Mountain Pass in Xinjiang-Qinghai on November 14, 2001 is the largest earthquake in mainland China since the beginning of this century. Because there is no observation near the source area, . However, after the earthquake, we found that all observation methods within the scope of the M 8.1 earthquake have different degrees of long, medium, short and time anomalies. In the east of Sichuan province, Gansu province and Ningxia province, there are different degrees of anomalies in the cross-fault displacements in the eastern part of the source area, but these anomalies did not predict the seismogenic area of the M 8.1 earthquake mainly due to the different tectonic structures Earthquake process