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| Preliminary study on characteristics of earthquake precursor of earth resistivity anisotropy degree in East China | |
| 作者姓名： | 冯志生 杨建军 梅卫萍 耿杰 汪雪泉 刘义高 |
| 作者单位： | Earthquake Administration of Jiangsu Province，Nanjing 210014，China，Earthquake Administration of Nanjing Province，Nanjing 210008，China，Earthquake Administration of Jiangsu Province，Nanjing 210014，China，Earthquake Administration of Shandong Province，Jinan 250014，China，Earthquake Administration of Anhui Province，Hefei 230031，China，Earthquake Administration of Anhui Province，Hefei 230031，China |
| 基金项目： | Key Project of State Science and Technology in the tenth Five-year Plan (200104BA601B01-04-02). |
| 摘 要： | Introduction The degree of earth-resistivity anisotropy was described (MAO, et al, 1995, 1998) as follows: 31EWSN1011-==niinSrr n=6 (1) where rNS and rEW are monthly mean values of earth resistivity in the direction of NS and EW, respectively, S is the half-year value. Equation (1) shows that if rNS=rEW, then S =0 and the electrical property of medium is isotropic; if rNSrEW, then S0 and the electrical property of medium is anisotropic. When S increases, the anisotropy of electri… |
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