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前言 国内外的地震工作者在二十多年的地震前兆观测研究中发现,发生在不同构造背景地区的地震,其前兆的反映情况有很大的差别。在1980年,马宗晋等曾研究过地震的构造分类问题。1982年,日本学者茂木清夫对比了美国西部中加利福尼亚地区、日本地区和中国大陆某些地区的地震前兆情况,提出地震前兆与构造条件之间具有密切的关系。他指出,美国西部的中加州地震,是发生在直线性平直断裂带上的简单剪切运动。该断层面
Foreword Domestic and foreign earthquake workers in the twenty years of earthquake precursory observation study found that the occurrence of earthquakes in different tectonic settings, the precursors reflect the situation is very different. In 1980, Ma Zongjin et al. Studied the tectonic classification of earthquakes. In 1982, Japanese scholar Maugamucho compared the earthquake precursors in the western part of California, the Central California, Japan and some parts of China and proposed that there is a close relationship between the earthquake precursors and the tectonic conditions. He pointed out that the Central California earthquake in the western United States is a simple shearing movement that occurs on linear straight fault zones. The fault plane