天水麦积磁偏角在我国西部地区几次强震前异常特征及震例分析

摘要

This paper introduced the abnormal feature of magnetic declination since 2008 at Maiji Area of Tianshui City before several strong earthquakes in the western region of China.If data is stable,easily identify anomaly,the test items of earthquake short-term monitoring can play a certain role.It is considered that the time of anomaly,the magnitude of the anomaly,the magnitude of the magnitude is larger,and the distance from the epicenter is also relatively close;Otherwise,the magnitude is smaller or the distance of the epicenter is far away.Combining the dynamic anomalies of groundwater change,this paper proved theanomaly of magnetic declination at Maiji Area of Tianshui City,and discussed the understanding during the research process.%介绍了2008年以来天水麦积磁偏角在我国西部几次强震前的异常特征,认为磁偏角在异常期间出现转折,可视为临震信号.如果异常时间长、异常幅度大、震级就大,震中距也较近;反之震级较小或震中距较远.结合地下水动态异常变化,对麦积磁偏角异常进行佐证,最后对研究过程中的认识进行探讨.