地震工程学报2017，Vol.39Issue(z1)：121-126,6.DOI:10.3969/j.issn.1000-0844.2017.Supp.0121
临汾台地电阻率趋势下降有限元数值分析
Descending Trend Analysis of Geo-resistivity at Linfen Seismic Station Using Finite Element Method
摘要
Abstract
In this study,we collected the geological,electrical strata,and electrical sounding data from the Linfen seismic station in the Shanxi Province,China.According to this information,the electrical structure of the medium beneath the Linfen station was simplified as a two dimensional electric section.On this basis,a three-dimensional inhomogeneous finite element model was con-structed,and the electrical structure of the strata in the study area was analyzed.The results show that the earth resistivity will increase with rainfall,which explains why the georesistivity in the Linfen station shows a high feature in the summer and a low one in the winter.In addition, the impact of rainfall on earth resistivity increases with depth,which is also concerned with media uniformity and geological factors.The rise of the water level in surrounding canals has little effect on the earth resistivity;therefore,it is believed that the gradual decrease of georesistivity since 2010 is not related to canals.The study has great significance to the interference factors of earth resistivity and possible earthquake precursors.关键词
临汾地震台/地电阻率/有限元/干扰Key words
Linfen seismic station/earth resistivity/finite element/interference分类
天文与地球科学引用本文复制引用
宁亚灵,王利花,程紫燕,吕海杰..临汾台地电阻率趋势下降有限元数值分析[J].地震工程学报,2017,39(z1):121-126,6.基金项目
中国地震局震情跟踪青年课题(2015010408) （2015010408）
山西省地震局科研项目(SBK-1626) （SBK-1626）
成都信息工程大学科研基金(KYTZ201513) （KYTZ201513）
山西省地震局科研项目(SBK-1735) （SBK-1735）
