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。
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.
出处
《地震》
CSCD
北大核心
2007年第2期81-88,共8页
Earthquake
基金
国家"十五"科技攻关项目(2004BA601B01-05-03)
作者简介
郑文俊（1947-），男，天津市人，高级工程师，主要从事地震活动及预报等研究。
