降雨对地电阻率干扰的分析  

ANALYSIS OF INTERFERENCE OF RAINFALL ON EARTH RESISTIVITY

作　　者：张学民[1] 王志贤[1] 臧明珍 郑慰坤[2] 

机构地区：[1]河北省地震局,石家庄050021 [2]河北省地震局大柏舍电法站,055350

出　　处：《华北地震科学》1996年第4期71-75,共5页North China Earthquake Sciences

摘　　要：有一些地电阻率(ρ_s)观测台站受本身台址条件的限制,观测深度较浅,因此观测值受到降雨等气象因素的影响.本文选取昌黎台EW向1983-1994年观测资料月均值,用褶积滤波和多元回归方法对ρ_s进行了降雨校正,并将之作为一个灰箱系统,将资料外推至1995年,然后与原始观测值作残差分析,取得了一定效果.同时用一般回归方法对其进行了检验,认为该方法是可行的.As some earth resistivity (p.) observational stations are limited by the station site conditions and the observation depths are relatively shallow, the observed values are affected by meteorological factors such as rainfall . In this parper, by selecting the monthly average values of observed data of EW direction at Changli Station in 1983 - 1994 and by convolution filtering and multiple regression methods , the rainfall correction for p, has been made, it has been regarded as a grey box, the data has been extrapolated to the year of 1995, then residual analysis of original observed data is made , a certain effect has been obtained . At the same time ,it has been checked by a common regression method. It is considereed that the method is feasible.

关 键 词：地电阻率 回归分析 降水量 降水分析 干扰分析 

分 类 号：P458.121[天文地球—大气科学及气象学]