Depth estimation of gravity anomalies can be determined using modified Hilbert transform. Modified Hilbert transform is identical in amplitude with conventional Hilbert transform but differs in phase as it yields a phase shift of 270°, whereas Hilbert transform is a 90° phase shifter. It has been shown mathematically that abscissa of the intersection point of the gravity field and the modified Hilbert transform is equal to the depth of the structure. The procedure is applied to spherical and cylindrical models at different depths and radiuses, then the effect of random noise is examined on the models that shown satisfactory results. To see the applicability of the method, the practical application of real data is also illustrated. The results from interpretation of real data are compared to the ones obtained from Euler deconvolution method, where an acceptable agreement is noticed.
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