关键词: 均衡重力异常, 布格重力异常, 布格改正, 均衡改正, 地壳均衡模型

Abstract: It is demostrated that feasible is to use isostatic anomalies of gravity to study the geologic structures of the surface and shallow crust according to the isostatic theory and relative experiment. It is indicated that all the reasonable isostasy models may give the same effects, various isostasy models and variations of the model parameters will only result in a little variation in isostatic-correction values of long wave length, and that an evident correlation can be found between the isostatic anomalies of gravity and the geologic structures of the surface and shallow crust. Therefore, it is better to select a simple model for the study of the crustal structure.The best advantage of this method lies in its ability of avoiding the effect of landform configuration to carry out an extense comparison as well as a quantitative analysis.

Key words: Isostatic anomaly of gravity, Bouguer anomaly, Bouguer correction, Isostasy correction, Isostasy model