根据重力异常计算基岩深度的方法

本文从重力场的基本理论出发,导出反映基岩起伏形态的密度界面函数。文中还研究了上覆沉积岩的密度随深度变化的规律,给出等效剩余密度公式。最后,给出由重力异常计算基岩深度的公式。用此法对白洋淀地区的重力异常进行了计算,其结果和实测曲线是吻合的。

The method of .determining the depth of basement by gravity anormalies

Based on the basic theory 6f gravity fields we derive the density interfece function which empresses the relief of basement.This paper is a study of the relation b;.vween density of overlaying sediments and depth variation. wa also provide the equivalent residual density formula and conclude with Ehe formula of calculating basement depth from gravity anormalies.The methad was used for calculating the gravity anormalies in Baiyangdian area and the result is in conformity with observed curves.