摘要
In this paper we introduce a new kind of TEM sounding configuration: Outside-loop sounding configuration,which measures a sounding spot 20 ~ 25 meters outside the loop instead of directly measuring with central-loop sounding. The characteristic of the outside-loop sounding configuration is that during high-precision sounding survey,this method can massively avoid the influence from the self-inductance of the transmitter loop compared to central-loop sounding,thus,can raise the resolution and the exploration depth of the survey. By comparative tests with central-loop sounding configuration and application to a sounding survey carried out in Turpan-Hami Basin,Xinjiang,we find that the method is effective and shall be put in use in future.