Abstract
In this paper we expand on a new concept for potential field processing and interpretation, the potential field tilt, which we introduced in an earlier paper. The tilt angle is defined in terms of the ratio of the first vertical derivative of the potential field to the horizontal gradient of the field. This measure has the property of being positive over a source and negative elsewhere. The tilt angle is compared with other edge detection measures such as the horizontal gradient, the second vertical derivative and the analytic signal and found to have the added advantage of responding well to both shallow and deep sources. A map of the tilt angle is provided to illustrate its use in recognizing the horizontal location and extent of sources.
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