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《Geophysical and Geochemical Exploration》 2005-04
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THE APPLICATION OF THE GRADIENT METHOD TO THE INTERPRETATION OF GRAVITY ANOMALIES OF TWO-DIMENSIONAL FAULTS

WEI Wei, LIU Tian-you (Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China)  
In this paper, some improvements have been made on the traditional gradient interpretation methods for the two-dimensional fault gravity anomalies: The least squares fitting technique is adopted to figure out the dip angleαof the step; The dip angle and the horizontal boundary of the step are directly used to calculate the burial depth of the step; the interpretation method for gravity two-dimensional gradient is extended to the interpretation of the complex fault model. The principle and operation means of this method are dealt with in detail in this paper. Compared with the traditional gravity gradient interpretation methods, this method is simpler and yields more stable interpretation results. With this method, the measured gravity data from a certain oil and gas basin were successfully interpreted.
【CateGory Index】: P631.1;
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