位场向上延拓的边界元法

BOUNDARY ELEMENT METHOD OF POTENTIAL FIELD UPWARD CONTINUATION

地质矿产部石油物探研究所

Research Institute of Geophysical Prospecting for Petroleum, MGMR

位场向上延拓可归纳为求解函数u所满足的Laplace方程 在区域内 在地面上 在其他边界上 本文介绍用边界元法进行位场向上延拓的方法原理和数值计算技术。并以重力向上延拓为例,对理论模型资料和实际资料进行计算。结果表明,对位场向上延拓而言,边界元法是一种行之有效的数值计算方法。

The upward continuation of potential field can be induced to determine the function u for satisfying the Laplace eguation; within the region on the surfacein other boundariesWhat the authors presented in this paper includes the principle and numerical calculation procedures of upward continuation of potential field using the boundary elemeent method. Also taking gravity upward continution asanexample,calculation is made for both theoretical model data and observed data. The result of whichindes that the bundary element method should be considered as a workable-proven approach for numerical calculation in terms of the upward continuation of potential field.