地下垂直偶极子场的准静近似

A Quasi-Static Approximation for the Fields Produced by a Buried Vertical Dipole

本文采用一种近似方法,简化 Sommerfeld 积分的求解。对地下深埋垂直偶极子进行准静分析,得出了简单的近似解析解,并对0—4000米源深的情况给出了源区附近地面上场强的数值结果。

A quasi-static approximation is used in this paper to simplify the Sommerfeld In- tegral.Using this method,we have abtained some simple analytical expressions of sur- face fields for the deeply buried Vertical dipoles.The calculated results for the sour- ces at the depth of 0-4000m are alse presented in thit paper,and they show very good agreement with that abtained by other methods.