| 解重力反问题的边界元法 |
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| 引用本文： | 张建中. 解重力反问题的边界元法[J]. 石油地球物理勘探, 1993, 28(5): 603-613 |
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| 作者姓名： | 张建中 |
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| 作者单位： | 地质矿产部区域重力调查方法技术中心 |
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| 摘 要： | 本文应用边界单元法对实际地质体边界及密度界面进行模拟，把确定地下密度体形状和单层、多层密度界面起伏形态的非线性问题归结为线性最小的二乘问题，并利用奇异值分解法（ＳＶＤ）和代数重建算法（ＡＲＴ）求解，从而开辟了一种解重力反问题的新途径。
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| 关 键 词： | 重力异常 反演 边界元法 密度体 |
Boundary element method for gravity inversion. |
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| Zhang Jianzhong Zhang Jianzhong,Regional Gravity Survey Center,No. East Rongshoubei Road. Xian City,Shanxi Province,Internal Postcode:. Boundary element method for gravity inversion.[J]. Oil Geophysical Prospecting, 1993, 28(5): 603-613 |
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| Authors: | Zhang Jianzhong Zhang Jianzhong Regional Gravity Survey Center No. East Rongshoubei Road. Xian City Shanxi Province Internal Postcode: |
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| Affiliation: | Zhang Jianzhong Zhang Jianzhong,Regional Gravity Survey Center,No. 5 East Rongshoubei Road. Xian City,Shanxi Province,Internal Postcode: 710016 |
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| Abstract: | Boundary element method is used to model real geological body boundary and density interfaces. Then nonlinear problem about determining both the shape of subsurface density body and the undulation geometry of one or multiple density interfaces can be converted into a linear least-square problem which may be solved by singular value decomposition and algebraic reconstruction technique, so that a new way to make gravity inversion is found successfully. |
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| Keywords: | gravity anomaly inversion boundary element density body density interface |
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