TEM Response of a Large Loop Source over a Halfspace and a Layered Halfspace

The all-time and late-time response of TEM over a homogeneous half space and layered half space are described. We analyzed the theoretical results and gave the differences between all-time resistivity and late-time resistivity. By using the program EMMA, the effects of three different models on TEM measurements are further discussed. Finally the advantages and disadvantages of three different models were obtained.