摘要
在EH4工作中,MN误差会导致视电阻率误差。有学者曾推导出MN长度误差引起的视电阻率相对误差公式,但公式的推导过程与实际工作有一定的偏差。MN方向偏差、MN长度误差及方向偏差同时存在对EH4视电阻率的影响,却未见报道。因此,这里对MN长度误差、MN方向偏差、MN长度误差及方向偏差同时存在引起的EH4视电阻率相对误差进行理论推导和数值计算。研究表明,EH4视电阻率误差随着MN误差的增大而增大;当存在MN长度误差时,MN长度误差为负的视电阻率相对误差比MN长度误差为正时大。
In EH4 work,MN error can cause the apparent resistivity error.Some scholars had deduced the apparent resistivity relative error formula caused by MN error in length.There is a larger deviation between deducting process of the formula and actual work.The influence of EH4 apparent resistivity caused by MN deviation in direction and by both MN error in length and deviation in direction has not been reported.Therefore,this paper adopts theoretical derivation and numeric calculation to study the EH4 apparent resistivity relative error caused by MN error in length,MN deviation in direction and both of them.The research indicates that the EH4 apparent resistivity error increases with MN error;When MN error in length exists,the apparent resistivity relative error caused by negative MN error in length is larger than positive MN error in length caused.
出处
《物探化探计算技术》
CAS
CSCD
2012年第4期397-401,366,共5页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
EH4
高频大地电磁法
视电阻率误差
MN长度误差
MN方向偏差
EH4
high-frequency electromagnetic sounding
apparent resistivity error
MN error in length
MN deviation in direction
