E M Abdelrahman et al 2006 J. Geophys. Eng. 3 143 doi:10.1088/1742-2132/3/2/005
E M Abdelrahman, E R Abo-Ezz, K S Essa, T M El-Araby and K S Soliman
Show affiliationsWe have developed a simple method to estimate the shape (shape factor) and the depth of a buried structure simultaneously from modified first moving average residual anomalies (second moving average residuals) obtained from gravity data using filters of successively greater window lengths. The method is based on computing the variance of the depths determined from all second moving average residual anomaly profiles using the least-squares method for each shape factor. The minimum variance is used as a criterion for determining the correct shape and depth of the buried structure. When the correct shape factor is used, the variance of the depths is always less than the variances computed using wrong shape factors. The method is applied to synthetic data with and without random errors, complex regional anomalies and interference from neighbouring structures, and tested on a field example from the USA.
91.10.Op Gravity anomalies; time variable gravity
93.85.Bc Computational methods and data processing, data acquisition and storage
Instrumentation and measurement
Issue 2 (June 2006)
Received 11 December 2005, accepted for publication 20 March 2006
Published 7 April 2006
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