Gravity anomalies of three-dimensional bodies with a variable density contrast |
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Authors: | I. V. Radhakrishna Murthy P. Rama Rao P. Ramakrishna |
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Affiliation: | (1) Department of Geophysics, Andhra University, Waltair, India |
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Abstract: | The exponential decrease in the density contrast of anomalous bodies is equated to a quadratic function. The three-dimensional body is divided into a series of parallel vertical polygonal sections of unit thickness each. The gravity effect of each side of the vertical polygonal cross-section with a quadratic density variation is derived in closed form. Gravity effects of a few equispaced and representative cross-sections are integrated to obtain the gravity anomaly of the entire body. When used in modelling gravity data, the method of considering vertical cross-sections has the unique advantage of easily allowing changes in theZ-coordinates of polygonal sections. |
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Keywords: | Gravity anomalies three-dimensional bodies quadratic density function |
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