近20年华北地电阻率异常空间演化及强震短期前兆判别标志研究

Study on the Spatial Evolution of Earth-Resistivity Anomaly and Its Short-term Precursor Symbol Mark of Strong Shock

开展了华北地电阻率异常参数提取的研究,以1980～2001年的异常参数为输入进行了全时空扫描,并对其动态图像演化做全面分析,由此提取出华北地区5级以上地震的地电阻率短期前兆的判别标志。为了进行初步检验,本文依上述判别标志对华北近年地电阻率动态图像做了对比分析。

This paper researched method for scavenging seismic anomaly parameter from observation data of earth-resistivity and used the parameter to establish the scanning map of the spatial distribution of earth-resistivity precursor parameter during 1980～2001.Through analysis of entire spatial dynamic maps, the earth-resistivity precursor symbol mark was established. To preliminary test the precursor symbol mark, the authors researched the dynamic evolution maps last year and using it to analyze comparatively with the short-term seismic potential in North China.