Abstract
In this paper, we have developed a new least- squares minimisation approach to determine the depth of a buried faulted structure approximated by a 2D semi-infinite horizontal slab from second moving average residual gravity anomalies. The problem of depth determination has been transformed into a problem of finding the solution to a nonlinear equation of the form z = f(z) .The method can be applied not only to residuals but also to observed data. The method overcomes the problems associated with determining the depth from successive horizontal derivative anomalies obtained from 2D gravity data using filters of successive graticule spacings. The method is applied to theoretical data with and without random errors and is tested on a field example from Egypt. In all cases, the depth solution obtained is in good agreement with the actual depth.
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