Abstract
This chapter discusses the applicability and limitations of potential field methods. Gravity is used to delineate hidden rifts, to determine the shape of rift troughs, including the nature of faulting, to investigate crustal and upper mantle structure in association with explosion and earthquake seismology, and to ascertain the isostatic state of rifts, including flexural studies. The lateral variations of the Earth's gravitational field are determined either by measuring the vertical component of gravitational attraction using a gravity meter or by using satellites to determine the variation in geoid height, which is proportional to the anomalous gravitational potential. There are three main approaches to the interpretation of a residual anomaly: (1) the indirect method, (2) the parametric method, and (3) the direct method.
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