三马坊地热前兆异常的震源特征初探

Preliminary Investigation of Characteristics of Geo-thermal Precursory Anomaly Before Signal Earthquake in North China and its Significance in Prediction

信号震是一种广义的前震；信号震地热前兆异常和主震地热前兆异常相似；信号震和主震沿同一构造体系活动；深入研究信号震与主震地热前兆异常的关系及地热异常特征和震源机制的关系,可能对地震预报的深入研究有一定的指导意义。

Signal earthquake is a foreshock in broad sense.Signal earthquakes have some geo-thermal precursory anomaly that is similar to major earthquakes.Signal earthquake and the major earthquake seem to be controlled by the same structural system.To make a thorou-ghgoing study on geothermal precursory anomaly and its relation with mainshock and source mechanism is of certain significance for imminent earthquake prediction.