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-FIELDAND THE NEAR-FIELD APPARENT RESLSTIVITY VALUE IN FRAQUENCE MAGNETOTELLARIC SOUNDING(CSAMT) USING HORIZONTAL ELECTRIC DIPOLE SOURCE

摘要: 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。

Abstract: By forward modeling of homogeneous and horizontal 2-layered medium and surveying example,some exchange property of the CSAMT appavent iesistivity value from far-field to near-field has been uiscribed in the paper.And the detali explanation abovt the corre; pondence relation between pEx and the 4-rodsymmetrical electric sounding (Schlumberger) apparent resistivity ps has been made. It is of significance for the interpratation of the pEx curve.