文章编号：(1996)01-6-5
源近区频域电磁测深视电阻率的一种数值计算方法①
(中南工业大学地质系，长沙410083)
摘 要: 在对近区场积分表达式中各积分因子特性分析的基础上，提出了一种解决近区场含两个Bessel函数奇异积分的分段Simpson积分法，较好地处理了近区视电阻率的数值计算问题。
关键字: 视电阻率 频域电磁测深 双频组合波 数值计算 分段Simpson积分法
NUMERICAL CALCULATION FOR APPARENT RESISTIVITY OF FREQUENCY
ELECTROMAGNETIC SOUNDING IN NEAR-FIELD ZONE
ELECTROMAGNETIC SOUNDING IN NEAR-FIELD ZONE
（Geology Department，Central South University of Technology，Changsha 410083）
Abstract:On the basis of analysing the characteristics of each integral factor in near source field expressions，a new piecewise Simpson integration for improper integral composed of double Bessel functions was advanced,and the problem of numerical calculation for apparent resistivity in near field zone was fairly solved.
Key words: apparent resistivity frequency-domain electromagnetic sounding dual-frequency combination wave numerical calculation piecewise Simpson integration.
