Based on the geoelectric observation data of the 1976 Tangshan earthquake of M=7. 8 compiled by the Research Group on the Geoelectricity of the Tangshan Great Earthquake, a dimensionless factor S has been defined as t...Based on the geoelectric observation data of the 1976 Tangshan earthquake of M=7. 8 compiled by the Research Group on the Geoelectricity of the Tangshan Great Earthquake, a dimensionless factor S has been defined as the degree of ground resistivity anisotropy. The S values during the generation process of that earthquake have been calculated and their variations have been analyzed. The result has showed that the variation of the degree of ground resistivity anisotropy existed throughout the process of generation and occurrence of the Tangshan earthquake and the features of its pattern are representative. The S value can therefore be taken as a new precursory factor of earthquakes which can be applied together with other dimensionless factors in the analysis and prediction of earthquakes. A physical explanation of the variation of the S value has also been given.展开更多
基于通州地表地电阻率在1976年唐山 M 7. 8地震前有明显前兆异常以及通州新建井下小极距地电阻率在2020年古冶 M 5. 1地震和2021年滦州 M 4. 3地震前出现的异常变化,从台站周边构造环境 、地震特征等方面进行对比分析,认为通州台地电阻...基于通州地表地电阻率在1976年唐山 M 7. 8地震前有明显前兆异常以及通州新建井下小极距地电阻率在2020年古冶 M 5. 1地震和2021年滦州 M 4. 3地震前出现的异常变化,从台站周边构造环境 、地震特征等方面进行对比分析,认为通州台地电阻率对唐山地区中强地震的中短期映震能力比较强。同时分析结果也显示在目前观测环境条件下,井下小 极距地电阻率再现了通州台地电阻率对周边地区中强地震具有较强地映震能力。展开更多
文摘Based on the geoelectric observation data of the 1976 Tangshan earthquake of M=7. 8 compiled by the Research Group on the Geoelectricity of the Tangshan Great Earthquake, a dimensionless factor S has been defined as the degree of ground resistivity anisotropy. The S values during the generation process of that earthquake have been calculated and their variations have been analyzed. The result has showed that the variation of the degree of ground resistivity anisotropy existed throughout the process of generation and occurrence of the Tangshan earthquake and the features of its pattern are representative. The S value can therefore be taken as a new precursory factor of earthquakes which can be applied together with other dimensionless factors in the analysis and prediction of earthquakes. A physical explanation of the variation of the S value has also been given.
文摘基于通州地表地电阻率在1976年唐山 M 7. 8地震前有明显前兆异常以及通州新建井下小极距地电阻率在2020年古冶 M 5. 1地震和2021年滦州 M 4. 3地震前出现的异常变化,从台站周边构造环境 、地震特征等方面进行对比分析,认为通州台地电阻率对唐山地区中强地震的中短期映震能力比较强。同时分析结果也显示在目前观测环境条件下,井下小 极距地电阻率再现了通州台地电阻率对周边地区中强地震具有较强地映震能力。
