前言 利用地震前兆进行地震预报,特别是近期地震预报,以达到直接减轻灾害的目的,这是近代地震预报科学探索的基本思路。六十年代以来,中、日、苏、美等国均加强了这方面的努力。二十多年的工作已取得了明显的进展,它集中反映在科研问题的深入及研究与 Foreword The use of earthquake precursors for earthquake prediction, especially the recent earthquake prediction, in order to achieve the purpose of direct disaster mitigation, which is the basic idea of ​​scientific exploration of modern earthquake prediction. Since the 1960s, China, Japan, the Soviet Union, the United States and other countries have stepped up their efforts in this regard. Over the past two decades, remarkable progress has been made in its work, which is mainly reflected in the deepening research and development of scientific research issues