Numerical Calculation of Dual-vector Wide Field Electromagnetic Sounding Method
In this paper a new electromagnetic prospecting method that is named the Dual-Vector Wide Fields Electromagnetic Sounding Method for the controlled source frequency-domain sounding method is presented.The method is mode up of two parts,which are a grounded horizontal electrical dipole source that has a clear polarization direction and measuring one set of electric vector receiver.It simultaneously presents a new full-wave expression of the electrical field to calculate directly and accurately earth resistivity by using the electromagnetic fields from horizontal electric dipole of the homogeneous half-space.Through numerical calculation of several typical layered models,the new apparent resistivity easily calculated can satisfactorily eliminate the distortion effect of the near and transient area,because it can converge to a stable value at low frequency parts and can reach the true resistivity.It obviously indicates the changing features of conductivity of subsurface much better than conventional CSAMT does.
Electromagnetic Prospecting Full-wave Apparent Resistivity Controlled Source Audio-frequency Magnetotelluric Method Dual-Vector Wide Fields Electromagnetic Sounding Method Numerical Calculation
Tiegang Tong Jingzhi Jiang
School of Geosciences and Info-Physics, Central South University, Changsha 410083, China College of Foreign Languages, HuNan University, Changsha 410082, China
国际会议
长沙
英文
23-27
2012-06-15（万方平台首次上网日期，不代表论文的发表时间）