| 重力梯度法的角点位置最优化选取研究(英文) |
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| 引用本文： | 孙鹏飞,吴燕冈,杨春成,韩兆红,范美宁.重力梯度法的角点位置最优化选取研究(英文)[J].应用地球物理,2011,8(4):269-276. |
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| 作者姓名： | 孙鹏飞 吴燕冈 杨春成 韩兆红 范美宁 |
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| 作者单位： | 吉林大学地球探测与科学技术学院;黑龙江省地球物理勘察院;吉林工程技术师范学院 |
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| 基金项目： | 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) |
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| 摘 要： | 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。
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| 关 键 词： | 高阶重力导数 重力梯度法 状态判别因子 |
Selecting the optimum location of the corner using gravity gradient method |
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| Peng-Fei Sun,Yan-Gang Wu,Chun-Cheng Yang,Zhao-Hong Han,Mei-Ning Fan.Selecting the optimum location of the corner using gravity gradient method[J].Applied Geophysics,2011,8(4):269-276. |
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| Authors: | Peng-Fei Sun Yan-Gang Wu Chun-Cheng Yang Zhao-Hong Han Mei-Ning Fan |
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| Institution: | 1. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China. 2. Jilin Teacher’s Institute of Engineering and Technology, Changchun 130026, China. 3. Geophysical Exploration Institute of Heilongjiang province, Heilongjiang 150036, China. |
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| Abstract: | 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 corner
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. |
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| Keywords: | high-order gravity derivative gravity gradient method status distinguishing factor |
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