质面系数法在重力反演中的边界效应及改进  

BOUNDARY INFLUENCE OF THE METHOD OF COMPRESSED MASS PLANE COEFFICIENT IN THE GRAVITY INVERSION

作　　者：刘保华[1] 李学伦[1] 辛柏森 

机构地区：[1]青岛海洋大学海洋地球科学学院

出　　处：《青岛海洋大学学报（自然科学版）》1997年第4期527-532,共6页Journal of Ocean University of Qingdao

基　　金：国家"七五"重点科技攻关项目

摘　　要：利用重力资料反演三维单一密度界面的质面系数法是目前最为常用的方法之一。但是，我们在实际工作中发现当研究区域以外不能趋于同一深度时，该方法存在严重的边界效应，即边界附近反演误差较大。本文提出这一问题以及改进的措施，理论模型和琉球沟弧盆系实例计算都表明，经边界修正后的反演效果有了明显改善。The method of compressed mass plane coefficient for the inversion of three dimensional single density discontinuity on gravity data is most popular in use. But we found in our work that when the boundaries of the research area had different depths, the boundary influence on the result of the inversion was serious. In this paper, we put forward this problem and present the measure to solve it. Through the theoretical model and real data inversion, it is proved that after correcting the coefficients of boundaries, the result of the inversion is improved remarkably.

关 键 词：重力反演 质面系数法 边界效应 琉球沟弧盆系 

分 类 号：P736.14[天文地球—海洋地质] P631.12[天文地球—海洋科学]