台阶(断层)模型重力异常正演计算的一种新算法

A new algorithm for gravity anomaly forward calculation of stepped(fault) model

传统的台阶模型重力异常正演公式会随着台阶倾斜面与水平面夹角的变化而产生畸变现象。为克服这一局限性,在前人推导台阶模型重力异常正演表达式的基础上,重新对台阶模型重力异常正演公式进行了理论推导,得出全新的台阶模型重力异常正演公式,并证明传统公式仅为新公式的特殊情况。模型实验证明新的正演公式有效克服了传统正演公式产生畸变的问题。

Traditional forward formula of stepped model for gravity anomaly may cause distortion as the step included angle of its inclined plane and horizontal plane changed.To overcome this limitation,based on the previous derivation about the gravity anomaly forward expression,the author derives this formula renewedly and gets a new form and furthermore proves that the traditional formula is just one special case of the new.The model experiments prove that the new equation can conquer the distortion problem efficiently.