昌黎台地电阻率变化特征分析  

ANALYSIS ON VARIATION CHARACTERISTICS OF GEORESISTIVITY AT CHANGLI SEISMIC STATION

作　　者：郭鹏昆 解真[1] 张国苓[2] GUO Pengkun;XIE Zhen;ZHANG Guoling(Hongshan Standard Seismic Station,Hebei Earthquake Agency,Xingtai 054000,China;Hebei Earthquake Agency,Shijiazhuang 050021,China)

机构地区：[1]河北省地震局红山基准台,河北邢台054000 [2]河北省地震局,河北石家庄050021

出　　处：《高原地震》2021年第1期24-30,共7页Plateau Earthquake Research

摘　　要：使用褶积滤波、线性回归和相关性方法分析了河北昌黎地震台的地电阻率变化特征。结果显示,降雨是昌黎地震台地电阻率出现"夏低冬高"年变的主导因素;地温对地电阻率日变化有较为明显影响,一定程度上影响了地电阻率的年变;地下水位的趋势上升,可能是导致昌黎地震台地电阻率自2017年以来的长趋势下降的主导因素。In this paper,convolution filtering,linear regression and correlation methods are used to analyze the variation characteristics of georesistivity of Changli Seismic Station in Hebei Province.The results show that rainfall is the main influencing factor leading to the annual variation of lower in summer and higher in winter of georesistivity in Changli Seismic Station,ground temperature has obvious influence on the diurnal variation of georesistivity,and affects the annual variation of georesistivity to some extent.The rising trend of groundwater level may be the dominant factor leading to the long-term decline of georesistivity in Changli Seismic Station since 2017.

关 键 词：地电阻率 年变 趋势性变化 主要影响因素 

分 类 号：P315.72[天文地球—地震学]