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通过系统地收集与整理１９８９年１０月１９日大同－阳高ＭＳ６１、１９９６年５月３日包头西ＭＳ６４与１９９８年１月１０日张北－尚义ＭＳ６２地震前地下流体异常资料，对比与综合分析了异常的形态特征、空间展布特征、时间变化特征与时空演化特征，进而提出华北北部地区地下流体中短期异常场的形成与演化机理。研究结果表明，中期异常场是区域构造活动的结果，区域构造活动同时激发了局部构造活动的强化与震源体的生成与发展，局部构造活动的强化产生了地下流体的短期异常场，震源体发展到临震阶段时在震中区生成了地下流体的源兆异常场。
By systematically collecting and collating the underground fluids of Datong-Yanggao MS6.1 on October 19, 1989, Baotou West MS6.4 on May 3, 1996 and Zhangbei-Shangyi MS6.2 on January 10, 1998 Anomaly data, contrast and comprehensive analysis of abnormal morphological characteristics, spatial distribution characteristics, temporal variation characteristics and temporal and spatial evolution characteristics, and then proposed the formation and evolution mechanism of short-term anomaly fields of subsurface fluid in the northern part of North China. The results show that the mid-period anomalous field is the result of regional tectonic activity, which stimulated the strengthening of local tectonic activity and the generation and development of focal body at the same time. The enhancement of local tectonic activity resulted in the short-term anomalous field of underground fluid and the development of focal body During the epicenter phase, an anomaly field of subsurface fluid was generated in the epicenter area.