A Versatile Nonlinear Inversion to Interpret Gravity Anomaly Caused by a Simple Geometrical Structure |
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Authors: | M Tlas J Asfahani H Karmeh |
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Institution: | (1) Atomic Energy Commission, P. O. Box 6091, Damascus, Syria |
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Abstract: | A geophysical interpretative method is proposed to depth, amplitude coefficient and geometrical shape factor determination
of a buried structure from an observed gravity anomaly related to a cylinder or a sphere-like structure.The method is based
on nonlinearly constrained mathematical modelling and also on stochastic optimization approaches. The proposed interpretative
method first has been tested on theoretical synthetic models with different random errors at a certain depth, where a very
close agreement has been observed between assumed and evaluated parameters. Subsequent field data have been considered for
which the interpreted results by other methods are available for comparison. The agreement between the obtained results by
the proposed technique and by other geophysical methods is good. A statistical analysis has been also carried out to demonstrate
the accuracy and the precision of the suggested interpretative method. |
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Keywords: | Gravity anomaly mathematical modelling interior penalty function stochastic algorithm |
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