摘要
本文应用边界单元法对实际地质体边界及密度界面进行模拟,把确定地下密度体形状和单层、多层密度界面起伏形态的非线性问题归结为线性最小二乘问题,并利用奇异值分解法(SVD)和代数重建算法(ART)求解,从而开辟了一种解重力反问题的新途径。
Boundary element method is used to model real geological body boundary and density interfaces. Then nonlinear problem about determining both the shape of subsurface density body and the undulation geometry of one or multiple density interfaces can be converted into a linear least-square problem which may be solved by singular value decomposition and algebraic reconstruction technique, so that a new way to make gravity inversion is found successfully.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1993年第5期603-613,共11页
Oil Geophysical Prospecting
关键词
重力异常
反演
边界元法
密度体
gravity anomaly
inversion
boundary element
density body
density interface
