蒙特卡罗反演法的改进及其在大地电磁测深资料解释中的应用
MODIFIED MONTE CARLO INVERSION METHOD AND ITS APPLICATION IN THE INVERSION OF MAGNETOTOL-LURIC SOUNDING DATA
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摘要: 本文将Jones的蒙特卡罗反演法,与修改后的马夸特反演法有机地结合在一起,从而获得了一种新的蒙特卡罗反演法.它实际上是定向求解与随机求解的结合,具有占用机时短及解的拟合度高的优点.作者利用该法处理了理论视电阻率曲线,及实测的视电阻率曲线,获得了大量具有高拟合度的模型,进而获得了可能解的范围.
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关键词:
- 大地电磁测深(MT) /
- 蒙特卡罗反演法 /
- 马夸特反演法 /
- 定向求解 /
- 随机求解
Abstract: In this paper,we combine the Jones' Monte Carlo inversion method with revised Mar-quardt inversion to get the new Monte Carlo inversion method. The method has advantages of high calculation speed and high precision of solution. It is actually a combination of random solution and directive solution. The authors processed the theoretical apparent resistivity data and actual apparent resistivity data using the new Monte Carlo inversion program,and a large number of models with high fitting degree,therefore obtaining the range of solution. -
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[1] Jupp. D. L. B., and Vozoff, K., 1975. Stable iterative methods for the inversion of geophysical data.Geophys. J. R. Astr. Soc., 42, 957—976.
[2] 陈明生、陈乐寿、王天生、白改先,1983. 用改进的广义逆矩阵方法解释大地电磁测深及电测深资料.地球物理学报,26, 390—400.
[3] Anderssen, R. S., 1970. The character of non—niqueness in the conductivity modelling problem for the earth. Pure Appl. Geophys., 80, 238—259.
[4] Hermance, J. F. and Grillot, L. R., 1974. Constraints on temperatures beneath Iceland from magnetotel—luric data. Phys. Earth Plan. Int., 8, 1—12.
[5] Jones, A. G, and Hutton, R., 1979. A multistation magnetotelluric study in southern Scotland——II,Monte—Carlo inversion of the data its geophysical and tectonic implication. Geophys. J. R. Astr. Soc., 56. 351—368.[1] Jupp. D. L. B., and Vozoff, K., 1975. Stable iterative methods for the inversion of geophysical data.Geophys. J. R. Astr. Soc., 42, 957—976.
[2] 陈明生、陈乐寿、王天生、白改先,1983. 用改进的广义逆矩阵方法解释大地电磁测深及电测深资料.地球物理学报,26, 390—400.
[3] Anderssen, R. S., 1970. The character of non—niqueness in the conductivity modelling problem for the earth. Pure Appl. Geophys., 80, 238—259.
[4] Hermance, J. F. and Grillot, L. R., 1974. Constraints on temperatures beneath Iceland from magnetotel—luric data. Phys. Earth Plan. Int., 8, 1—12.
[5] Jones, A. G, and Hutton, R., 1979. A multistation magnetotelluric study in southern Scotland——II,Monte—Carlo inversion of the data its geophysical and tectonic implication. Geophys. J. R. Astr. Soc., 56. 351—368.
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