嘉山台地电阻率变化特征分析  

Analysis on Variation Characteristics of Earth Resistivity at Jiashan Station

作　　者：尹天杰 孙亮亮[1] 袁勇 赵桂宝 YIN Tianjie;SUN Liangliang;YUAN Yong;ZHAO Guibao(Jiashan Seismic Station of Anhui Seismological Bureau,Mingguang,Anhui Province,239400 China)

机构地区：[1]安徽省地震局嘉山地震台,安徽明光239400

出　　处：《科技资讯》2021年第7期81-83,共3页Science & Technology Information

摘　　要：嘉山台地电阻率数字化观测时间长、数据精度高,是安徽省内映震能力较好的地电阻率台站之一。该文通过对嘉山台地电阻率日变化、年变化两种特征变化进行分析,发现嘉山台日变化由于受到地铁等背景噪声的影响,其变化形态较不明显,年变化主要是受温度和降雨量的影响,影响因素归根于季节更替带来的气象变化。但是从长期趋势来看,两测向变化形态并不一致,与场地环境和应力场变化有关。The Jiashan Station has a long time for digital observation of resistivity and high data accuracy.It is one of the ground resistivity stations in Anhui Province with good earthquake reflection capabilities.This paper analyzes the two characteristic changes of the resistivity of Jiashan platform,the diurnal change and the annual change.The analysis found that the diurnal change of Jiashan platform is affected by subway and other background noise,and its change form is less obvious.The annual change is mainly affected by temperature and rainfall influence,the influencing factor is attributable to the meteorological changes brought about by the change of seasons.However,from the perspective of long-term trends,the two directional changes are not consistent,and are related to changes in the site environment and stress field.

关 键 词：地电阻率 变化特征 日变化 年变化 

分 类 号：P315[天文地球—地震学]