【作者】 毛桐恩； 赵明； 刘江丽；

【Author】 Mao Tongen.Zhao Ming and Liu Jiangli (Institute of Geophysics, China SeismoLogical Bureau, Beijing 100081, China)

【机构】 中国地震局地球物理研究所；

【摘要】 在完成中国地震局“九五”攻关项目(95-04-04)中,探索提出了新的无量纲地电前兆因子——地电阻率各向异性度(S),其动态演化图像特征反映了地震孕育过程,为考察地电阻率各向异性度(S)动态演化图像法预测地震的效能,对大华北、西北两个研究区利用许绍燮提出的R值法进行了统计检验。结果表明,地电阻率各向异性度(S)异常变化中的地震前兆信息量大于地电阻率异常变化中的地震前兆信息量。地电阻率各向异性度(S)动态演化图像法(以下称S值图像法)预测地震其效能优于地电阻率法(р值时序曲线法)。更多还原

【Abstract】 When finishing the Project 95-04-04 from China Seismological Bureau, a new dimension-less geoelectric precursor factor, the degree of ground resistivity anisotropy (5) was investigated and proposed. Characteristic of dynamic evolution pattern of 5 reflects seismogenic process. The ability of predicting earthquake by the method of dynamic evolution patterns of S was inspected through a statistic test which was made in big North and Northwest part of China using the method of the R value. The results show that more information was received from the variation of S than from that of ground resistivity. The method of dynamic evolution patterns of 5 is better than the method of ground resistivity for predicting earthquake.更多还原