Papers by Keyword: High-Precision Magnetic Survey

Abstract: In this paper 1:10 000 high-precision magnetic survey work has been done using GSM-19T proton magnetometer in Halaganlawusu area. There were data processing including gridding, filtering, reduction to the pole, continuation, derivation, and so on. By precise interpretation and inference with magnetic anomaly, the distribution characteristics of basic rock mass was found out. According to the magnetic survey data and geological research, fitting-inversion of measured magnetic section P1, P2 were done. It preliminarily concluded the distribution characteristics of underground ore rock mass and achieved the effect of the geophysical prospecting.

Abstract: On the basis of presenting the piping and seepage detection by magnetic-electric prospecting method, the authors analyzed and testified validity of the method. According to calculated results, the magnitude of magnetic field of artificial current was smaller on section if electrodes and cables were set rationally. Usually, the magnetic field magnitude of piping had several times to more than decuple comparing with magnetic field of artificial current. So, the magnetic abnormity could be detected easily by high-precision magnetometers. At the same time, their curves’ characteristics were different evidently. The analysis result shows that the piping and seepage of dyke can be detected by combining method of direct current supplying and high-precision magnetic survey.