水平电偶源频率测深远区、近区场视电阻率值的讨论

A DISCUSSION ON THE FAR-FIELD AND THE NEAR-FIELD APPARENT RESISTIVITY VALUE IN FRAQUENCE MAGNETOTELLARIC SOUNDING(CSAMT)USING HORIZONTAL ELECTRIC DIPOLE SOURCE

通过理论曲线的计算和实测曲线的分析,阐明了频率测深ρ_①^(EX)曲线的变化特征,并找出了其电阻率和直流测深电阻率之间的对应关系。

By forward modeling of homogeneous and horizontal 2-layered medium and surveying example,some exchange property of the CSAMTappavent(?)esistivity value from far-field tonear-field has been discribed in the paper.And the detali explanation about the corres-pondence relation between ρ_ω^(Ex)and the 4-rodsymmetrical electric sounding(Schlumberger)apparent resistivity ps has been made.It is ofsignificance for the interpratation of theρ_ω^(Ex)curve.