摘要
二维密度界面的反演可表述成非线性优化问题，本文用遗传算法进行反演计算，首先把连续的密度界面分割成若干单元，在单元中用形函数拟合，再用高斯积分求解重力异常值，把约束条件和拟合方差组合成目标函数，用园柱体和二维盆地模型的反演实例表明，用遗传算法。
Inversion of gravity anomalies caused by 2 D surface geologic structures is one of many geophysical problems whichcan be identified as a nonlinear optimization problem. We have investigated the applicability of 'genetic algorithms'(GA) to calculate this inverse problem. The continuous surface of geologic structures is divided into several elements. Thr surface in the elements is matched with polynomial. Gauss numericalintegration is employed to calculated gravity anomalies. The Combination of matching error and restraint condition is used as the fitness function. Two examples are presented in the paper, the results show to be ideal, which prove it available for GA to inverse gravity data caused by 2 D surface of geologic structures.
出处
《物探化探计算技术》
CAS
CSCD
1997年第2期138-142,共5页
Computing Techniques For Geophysical and Geochemical Exploration
