Abstract
Terrain corrections for Bouguer gravity anomalies are generally obtained from topographic models represented by flat-topped compartments of circular zones, utilizing the so-called Hayford-Bowie (1912), or Hammer's (1939) method. Some authors have introduced improved relief models for taking uniform slope into consideration (Sandberg, 1958; Kane, 1962; Takin and Talwani, 1966; Campbell, 1980). We present a new model that increases the accuracy of the calculation of terrain correction close to the gravity station in rugged terrain, especially when conventional templates with few zones are used in field calculation.
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