Abstract：In order to know the identified capacity of TEM for detecting thin layer,the paper designed different geoelectric models to carry out the forward computation of TEM response and correlation of relevant resistivity curves of existing thin layer with non-existing thin layer.The relative error between two models was computed,from which the identified capacity of thin-layer structural body by TEM was analyzed,obtaining the conclusion having practical guide meaning.The comparison of TEM with controlled source audio-frequency magneto Tellurics (CSAMT) was carried out for same thin-layer geoelectric models,it is considered from which that identified capacity of TEM is better than that of CSAMT.
