Abstract

The technique of the analytic signal (or the enhanced analytic signal) of potential field data to determine the locations of geologic boundaries has developed in recent decades. In theory, the application to magnetic data was independent to the direction of magnetization of the sources. However, in practice the amplitudes of the analytic signal depend on ambient parameters. Some authors have shown that the analytic signal applied to the reduction to the magnetic pole gave better results. In this paper the enhanced analytic signal of reduction to the magnetic pole of the south of Vietnam - at the low latitudes - is calculated and the results are compared to the ones that are obtained by the the direct application of the enhanced analytic signal of magnetic anomalies.