Selecting the optimum location of the corner using gravity gradient method  

重力梯度法的角点位置最优化选取研究(英文)

作　　者：孙鹏飞[1] 吴燕冈[1] 杨春成 韩兆红[1,3] 范美宁[1] 

机构地区：[1]吉林大学地球探测与科学技术学院,长春130026 [2]黑龙江省地球物理勘察院,哈尔滨150036 [3]吉林工程技术师范学院,长春130026

出　　处：《Applied Geophysics》2011年第4期269-276,370,共9页应用地球物理（英文版）

基　　金：support by the "Eleventh Five-Year" National Science and Technology Support Program (No. 2006BAB01A02);the Pivot Program of the National Natural Science Fund (No. 40930314)

摘　　要：The conventional gravity gradient method to plot the geologic body location is fuzzy. When the depth is large and the geologic body is small, the Vzz and Vzx derivative errors are also large. We describe that using the status distinguishing factor to optimally determine the comer location is more accurate than the conventional higher-order derivative method. Thus, a better small geologic body and fault resolution is obtained by using the gravity gradient method and trial theoretical model calculation. The actual data is better processed, providing a better basis for prospecting and determination of subsurface geologic structure.常规的重力梯度法对地质体位置划分很模糊,当深度越大,地质体越小时,对Vzz和Vzx求导的误差也越大,导致结果与实际偏差很大。本文提出状态判别因子对角点位置进行优化确定,比常规高阶重力导数法更精确,使重力梯度法在对小地质体和断裂上有更好的分辨率,理论模型试算和实际资料处理效果很好,为找矿或划分地下地质体产状提供了更有利的依据。

关 键 词：high-order gravity derivative gravity gradient method status distinzuishinz factor 

分 类 号：P223.6[天文地球—大地测量学与测量工程]