二维位场向上延拓和向下延拓的样条函数法  

SPLINE FUNCTION METHODS FOR UPWARD CONTINUATION AND DOWNWARD CONTINUATION OF 2-D POTENTIAL FIELD

作　　者：汪炳柱[1] 王硕儒[2] 

机构地区：[1]国家地震局地球物理研究所 [2]青岛海洋大学

出　　处：《物探化探计算技术》1998年第2期125-129,共5页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：本文用样条函数法实现了二维位场的向上延拓和向下延拓，向上延拓用样条函数法计算泊松积分，向下延拓用样条函数法求解第一类Ｆｒｅｄｈｏｌｍ积分方程。模型和实例计算表明，本文方法正确可行且精度高。This paper proposes to use spline function methods to accomplish upward continuation and downward continuation of 2-D potential field. In doing upward continuation, spline function is used to calculate Poisson integral. In doing downward continuation, spline function is used to solve the first kind of Fredholm integral equation. Model and real data calculations indicate that the methods proposed in this paper are corect, practical and accurate.

关 键 词：二维位场 向上延拓 向下延拓 样条函数法 物探 

分 类 号：P631.12[天文地球—地质矿产勘探] O241.5[天文地球—地质学]