GRAPRISM程序计算由孤立的下伏棱柱状体产生的重力场，由于计算的重力效应，目标体的密度实际上是与主要介质的密度对比。只能使用单个棱柱体和单个剖面。正演算法的求解基于S.-E. Hjelt (1972)提供的原始算法。这个程序主要起到教学作用。-The GRAPRISM program computes the anomalous gravity field caused by an isolate, dipping

prism-like body. Since only

the relative gravity effect is computed, the density of the target is actually the density contrast

with respect to the host medium. Only a single body and a single profile can be used. The

fo

rward computation is based on the solution and the original algorithm of S.-E. Hjelt (1972).

The GRAPRISM program is intended primarily for educational purposes.