Abstract: Window curve method, a simple method to quickly locate a polarizable body from time-domain induced polarization (TDIP) method is addressed. In the method, the shape and depth of a polarizable body can be calculated from the horizontal derivatives of TDIP abnormal. And window curves can be generated from the functions of different shape factor and depth. From the cross point of different window curves, a final shape factor and depth information of a polarizable body can be estimated. The method has been applied to theoretical data with or without noise, as well as experiment and field data. The results shows that the derived shape and top buried depth of abnormal body agrees well with the known information. The relative error between the interpretation results and the theoretical values is basically less than 10%.

Key words: uniform field, induced polarization method, quadratic horizontal derivative, quickly locating method, window curve method