1920年海原8.5级地震震中区地电阻率各向异性研究
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摘要
通过海原8.5级地震震中区环行电测深研究,发现在断层破碎带有明显的电阻率各向异性,垂直断层走向呈现明显的高电性,断层走向呈现明显的低电性。根据电性差异讨论了断层地表的变形特征。研究结果表明:环形电测深工作,对研究地面附近地层物性变化有重要意义。
Through the circular electric sounding in the epicentral area of Haiyuan M8.5 earthquake we found that there is obvious anisotropy of earth resistivity on the fracture zone of faults. Perpendicular to the strike of fault shows high electrical property and along the strike of fault shows low electrical property. Based on the difference in electrical property, the characteristic of surface deformation above fault is discussed. The results show that circular electrical sounding is significant to the study of stratum characteristic near surface.
引文
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    [5]毛桐恩,王铁成,姚家榴,卢军,张洪魁.唐山地震孕育、发展、发生整个过程中存在地电阻率各向异性变化[J].地震学报,1995,17(4):505-510.
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