| 宝坻台地电观测的水文地质背景及其电阻率变化与降雨量和水位变化的关系 |
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| 引用本文： | 郑文俊,钱家栋,田山,刘允秀.宝坻台地电观测的水文地质背景及其电阻率变化与降雨量和水位变化的关系[J].地震,2007,27(2):81-88. |
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| 作者姓名： | 郑文俊 钱家栋 田山 刘允秀 |
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| 作者单位： | 1. 天津市地震局,天津,300201
2. 中国地震局地震预测研究所,北京,100036 |
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| 基金项目： | 国家“十五”科技攻关项目(2004BA601B01-05-03) |
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| 摘 要： | 通过对宝坻台地电阻率与当地降水量以及该台深、浅井水位观测资料的相关性计算,并结合该地区水文地质和构造背景的分析,对该台十余年来地电阻率观测出现的缓慢下降的原因进行了研究。结果表明宝坻台地电阻率的长期缓慢下降主要与地下基岩背斜溶岩裂隙储水构造的含水量减少有关,而每年下半时段由降水集中引起的浅水位变化对地电阻率的短期变化具有影响。
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| 关 键 词： | 地电阻率 降雨量 地下水位 水文地质 宝坻台站 |
| 文章编号： | 1000-3274(2007)02-0081-08 |
| 修稿时间： | 2006-04-11 |
Study on geohydrologic setting of the observation of resistivity on Baodi Station and relation between the variations of resistivity with rainfall and water level fluctuation |
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| ZHENG Wen-jun,QIAN Jia-dong,TIAN Shan,LIU Yun-xiu.Study on geohydrologic setting of the observation of resistivity on Baodi Station and relation between the variations of resistivity with rainfall and water level fluctuation[J].Earthquake,2007,27(2):81-88. |
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| Authors: | ZHENG Wen-jun QIAN Jia-dong TIAN Shan LIU Yun-xiu |
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| Institution: | 1. Earthquake Administration of Tianjin Municipality, Tianjin 300201; 2. Institue of Earthquake Science, CEA, Beijing 100036, China |
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| Abstract: | The reason causing slow decrease of the of resistivity observational data in late more than 10 years is investigated through correlative analyses on the data of observation of resistivity and the data of rainfall and water level of deep well and shallow well at Baodi station,and combining with the analysis of geohydrology and tectonic setting.The result shows that the tendency of the secular fall off of resistivity is mainly associated with the decrease of hydraulic discharge within the anticline with hydrolysis fracture,and the fluctuation of resistivity in short term is affected by the variation of the shallow level caused by rainfall. |
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| Keywords: | Resistivity Rainfall Water level Geohydrology Baodi station |
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