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A gradient‐ratio method for the semi‐automatic... 
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Joined: Fri Mar 11, 2011 9:00 pm
Posts: 238
Post A gradient‐ratio method for the semi‐automatic...
Geophysical Prospecting: A gradient‐ratio method for the semi‐automatic interpretation of gravity map data sets

The application of semi‐automatic interpretation techniques to potential field data can be of significant assistance to a geophysicist. This paper generalizes the magnetic vertical contact model tilt‐depth method to gravity data using a vertical cylinder and buried sphere models. The method computes the ratio of the vertical to the total horizontal derivative of data and then identifies circular contours within it. Given the radius of the contour and the contour value itself, the depth to the source can be determined. The method is applied both to synthetic and gravity data from South Africa. The Matlab source code can be obtained from the author upon request.

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Mon May 07, 2012 3:07 pm
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