determine the parameters of 2D folded and geology structures besides estimating linear regional gravity background is presented wherein the density contrast varies with depth based on a parabolic equation.a code writed in fortran 90 and The efficiency of the code is illustrated with a set of synthetic gravity anomalies over an anticlinal and a synclinal structure both with and without regional background.at firs calculate Forward gravity modeling and then fitting the theoretical gravity anomalies to the observed ones in the least-squares approach and then estimating the three parameters namely, z1, z2 and i of the structure besides the two coefficients of regional gravity anomaly.


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