Walsh spectra of gravity anomalies over some simple sources |
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| Authors: | R.K. Shaw B.N.P. Agarwal B.K. Nandi |
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| Affiliation: | aDepartment of Applied Geophysics, Indian School of Mines, Dhanbad 826 004, India;bMarine Wing, Geological Survey of India, Calcutta, India |
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| Abstract: | Walsh transform of gravity anomalies over a point mass, a horizontal and a vertical line mass have been computed to obtain a cyclic shift invariant differential energy density (DED) function. Quantitative relations between DED spectral characteristics with depth to centroid/top of the source have been established. The effects of profile length, sampling interval, random noise and zero padding have been investigated. Applicability of the proposed method has been evaluated through two field examples. |
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| Keywords: | Walsh transform Gravity anomaly DED spectrum Sequency Shift invariant |
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