| 几何平均重力归一化总梯度在山东招远金矿采空区的应用 |
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| 引用本文： | 苏超,杜晓娟,马国庆,周文纳.几何平均重力归一化总梯度在山东招远金矿采空区的应用[J].世界地质,2014,33(4):889-894. |
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| 作者姓名： | 苏超 杜晓娟 马国庆 周文纳 |
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| 作者单位： | 吉林大学 地球探测科学与技术学院，长春 130026 |
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| 摘 要： | 传统方法对重力异常的总梯度作归一化计算时,通常是对总梯度的模作算术平均。笔者对归一化函数的分母分别作了几何平均、调和平均、修匀平均和中值平均,计算归一化函数。通过模型试验对比这四种不同的统计平均,其中几何平均重力归一化总梯度在进行反演计算时,抗噪能力更强,反演结果更加集中、准确。将该方法应用于山东招远金矿采空区,改进后的方法可以更加准确地确定采空区的水平位置和中心埋深。
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Appication of normalized full gradient method with geometric mean in mined- out area of Zhaoyuan gold deposit in Shandong |
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| SU Chao,DU Xiao-Juan,MA Guo-Qing,ZHOU Wen-Na.Appication of normalized full gradient method with geometric mean in mined- out area of Zhaoyuan gold deposit in Shandong[J].World Geology,2014,33(4):889-894. |
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| Authors: | SU Chao DU Xiao-Juan MA Guo-Qing ZHOU Wen-Na |
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| Institution: | College of Geo-exploration Science and Technology，Jilin University，Changchun 130026，China |
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| Abstract: | Traditional normalized full gradient methods usually use arithmetic average to calculate the normal- ized function with the module of total gradient． The authors use four different kinds of averages such as geometric， harmonic- ，smoothing- and median averages to calculate the normalized function． Compared these four different kinds of statistical averages，it is found that the geometric average has less affect by noise，which made the results of inversion more concentrated and accurate． Then the modified method was applied in mined- out area of Zhaoyuan gold deposit in Shandong，it can quickly and accurately find the horizonal position of the mind- out area and its central buried depth． |
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| Keywords: | normalized full gradient statistical average mined- out area |
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