| 视电阻率年变的定量计算 |
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| 引用本文： | 徐世浙.视电阻率年变的定量计算[J].地震学报,1985,7(4):422-427. |
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| 作者姓名： | 徐世浙 |
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| 作者单位： | 山东海洋学院 |
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| 摘 要： | 本文定量分析地温、地下水位变化对视电阻率的影响。首先建立与地温、地下水位变化相应的地电断面,这种断面的电性不是分层均匀的,然后用有限单元法计算视电阻率。计算结果表明,对与临沂地电台相近的地电断面,地下水位的变化对视电阻年变的影响大于地温年变的影响,前者约为后者的两倍。基岩对年变大小有强烈的控制作用,基岩浅,年变明显,基岩深,年变大为减弱。
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QUANTITATIVE CALCULATION OF THE ANNUAL VARIATION OF APPARENT RESISTIVITY |
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| Abstract: | The influence of the variations of earth temparature and groundwater level on apparent resistivity is quantitatively analysized in this paper. The geoeleetric section corresponding to the variation of earth temparature and groundwater level are modelled. The resistivity of this sort of section is not straticulately homogeneous. We calculated apparent resistivity by the finite element method. The calculation shows that for geoeleetric sections similar to that at Linyi Station,the influence.of variation of groundwater level on the annual variation of apparent resistivity is about twice that clue to earth temparature variation.The depth of bedrock strongly controls the magnitude of annual variation of apparent resistivity. The shallower the bedrock,the more obvious is the annual apparent resistivity variation,and vice versa. |
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