| 点源三维地形视电阻率的计算 |
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| 引用本文： | 莫撼,陈雁辉.点源三维地形视电阻率的计算[J].华东地质学院学报,1988(3). |
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| 作者姓名： | 莫撼 陈雁辉 |
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| 作者单位： | 华东地质学院物探系，华东地质学院物探系 |
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| 摘 要： | 利用格林公式及点源场的边界条件,将地下半空间位函数的体积积分变为地面位函教的积分方程以后,用边界元方法解此积分方程便可得到地面各节点的电位值。其计算精度和速度取决于剖分方式和节点密度。本文采用变网格的剖分方式,用较少的点实现了计算,并兼顾了精度和速度。
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| 关 键 词： | 边界元法 格林公式 视电阻率 点源 三维地形 地形改正 剖分 变网格 |
THE CALCULATION OF APPARENT RESISTIVITY FOR A POINT SOURCE ON THREE CLIMEUSIONAL TOPOGRAPY |
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| Mo Han Chen Yanhui.THE CALCULATION OF APPARENT RESISTIVITY FOR A POINT SOURCE ON THREE CLIMEUSIONAL TOPOGRAPY[J].Journal of East China Geological Institute,1988(3). |
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| Authors: | Mo Han Chen Yanhui |
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| Institution: | Mo Han Chen Yanhui |
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| Abstract: | The volume integration of potential function in the graund can be transformed to the integal equations of the potential function on the surface by using the "Green's formulas" and the boundary conditions of a point source. The boundary elements methods used to solve the integal equations and the potentials on topography are therefor obtained. The precision and the speed of the calculation are determined by the dividing method and the density of the poinrs. In this paper, use is being made of a method of dividing the surface by changing net points.Considering. both precision and speed, it could use a relative small number of points to work the calculation. |
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| Keywords: | boundary elements method Green's formulas apparent resistivity point source three dimensional topography terrain correction dividing changing net |
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