摘要
地下水平电偶源在地面上形成的正常电磁场的研究是电法勘探的重要理论问题。本文给出了地下半空间存在低阻薄层时的地下水平电偶源在地面上形成的电磁场各分量的表达式，并由此对正常场进行了计算、分析，对实测资料进行了处理和解释。结果表明，在低频情况下，地下水平电偶源在地面上形成的磁场受低阻覆盖层和水平导电层的影响小，具有稳定的特征。
n this paper,the formulas of components of EM field produced by horizontal electric dipoles in undergroundhalf space with low resistance layer are given. And theoretical curves of normal field have been computed and analyzed. Practice data have been explained used the results. The results show that the magnetic field are stable and the effects of low resistance layer are small in low frequency.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1996年第2期42-47,共6页
Coal Geology & Exploration
关键词
电磁法勘探
充电电磁法
水平电偶源
M charge method
horizontal electric dipoles
normal field
thin conductive formation.
