山东地区水化学短临跟踪标志体系的研究

在系统整理山东地区水化学观测资料的基础上，对山东菏泽５．９级地震、苍山５．２级地震及大同６．１级地震和南黄海５．３级地震前的地震异常特征进行了分析和总结。认为水化学多组分的同步异常变化，同震源应力场孕育过程，多组分的同步异常变化，具有统一的物理力学机制，是震前源兆异常的重要标志，这些异常基本同步出现，相互印证，增强了异常的可信度，为短临异常的判定提供了较为充分的依据。某一井孔水化学多发出现同步异常

A STUDY OF INDEX SYSTEM OF SHORT IMPENDING TRACING OF HYDROCHEMISTRY IN SHANDONG REGION

On the basis of dealing with the data of hydrochemistry observations in Shandong region,the seismic anomalous features before Shandong Heze 5 9 earthquake,Cangshan 5 2 earthquake,Datong 6 1 earthquake and Southe China Sea 5 3 earthquake have been analyzed and summarized.It is considered that synchronous anomalous variations of multi components reflect the developing process of source stress field,and have united physical mechanism,which is an important index of source precursor anomaly before earthquake.The synchronous appearances of these anomalies have increased reliability of anomalies,providing full evidences for the judgments of short impending anomalies.The appearance of synchronous anomalies in a certain well predicts that there probably will be an earthquake of M 5 in the coming ten days or several months in the same fault.