大地电磁测深数据一维自动反演
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摘要
在学科实践中,反演是一种相当普遍的手段。地球物理反演则是通过对地面、地下、空间,甚至海洋上的观测(地震仪、重力仪、地电及地磁仪)资料进行分析计算,来推断地球内部介质的地震波速度、密度、电导率等参数的分布,从而得到地球内部介质分布的二维或三维结构图像。本文根据阮百尧教授在其"电阻率激发极化法测深数据的一维最优化反演方法"一文中所述,导出了在大地电磁测深中与电阻率测深一维最优反演相似的反演方法,通过自动迭代反演出地下模型参数。计算表明,这是一种快速和实用的自动反演方法。
In practice,inversion is a method used widely.Geophysics inversion deduces the distribution of seismic-wave speed,density,conductivity and so on in earth interior,then obtains the 2D or 3D structure images for the distribution of earth interior medium,by analyzing the observed date on surface,in subsurface and in space,even on the sea.Referring to the correlate articles by Profession Ruan B.Y,Derived in the magnetotelluric sounding and resistivity sounding similar to the one-dimensional inversion method optimal inversion,Inverted through the automatic iterative model parameters.Calculations show that this is a fast and practical method for the automatic inversion.
In practice,inversion is a method used widely.Geophysics inversion deduces the distribution of seismic-wave speed,density,conductivity and so on in earth interior,then obtains the 2D or 3D structure images for the distribution of earth interior medium,by analyzing the observed date on surface,in subsurface and in space,even on the sea.Referring to the correlate articles by Profession Ruan B.Y,Derived in the magnetotelluric sounding and resistivity sounding similar to the one-dimensional inversion method optimal inversion,Inverted through the automatic iterative model parameters.Calculations show that this is a fast and practical method for the automatic inversion.
引文
[1]Coggon J H.Electromagnetic and electrical modeling by the finiteelement method.Geophysics,1971,36,(2):132-155.
[2]Rijo L.Modeling of electric and electromagnetic data[Ph.D.thesis].Univ.of Utah.,1977.
[3]Gerald W,Hohmann.Three-dimensional induced polarization andelectromagnetic modeling.Geophysics,1975,40,(2):309-324.
[4]Pridmore D F.Three-dimensional modeling of electric andelectromagnetic data using the FEM[Ph.D.thesis].Utah:Univ.of Utah.,1978.
[5]Dey A,Morrision H F.Resistivity Modeling for Arbitrarily Shaped 3-DStructures.Geophysics,1979,44,(4):753-780.
[6]Poirmeur G,Vasseur G.Three Dimensional Modeling of a Hole-HoleElectrical Method:Application to the Interpretation of a Field Survey.Geophysics,1988,53,(3):402-414.
[7]Lesur V,Cuer M and Straub.A 2-D and 3-D Interpretation ofelectrical tomography measurements,Part 1:The Forward Problem.Geophysics,1999,64,(2):386-395.
[8]陈乐寿.大地电磁测深资料处理与解释.北京:石油工业出版社,1989.
[9]阮百尧.电阻率/激发极化法测深数据的一维最优化反演方法.桂林工学院学报,1999,19,(4):321-325.
[10]李金铭.地电场与电法勘探.北京:地质出版社,2005.
[2]Rijo L.Modeling of electric and electromagnetic data[Ph.D.thesis].Univ.of Utah.,1977.
[3]Gerald W,Hohmann.Three-dimensional induced polarization andelectromagnetic modeling.Geophysics,1975,40,(2):309-324.
[4]Pridmore D F.Three-dimensional modeling of electric andelectromagnetic data using the FEM[Ph.D.thesis].Utah:Univ.of Utah.,1978.
[5]Dey A,Morrision H F.Resistivity Modeling for Arbitrarily Shaped 3-DStructures.Geophysics,1979,44,(4):753-780.
[6]Poirmeur G,Vasseur G.Three Dimensional Modeling of a Hole-HoleElectrical Method:Application to the Interpretation of a Field Survey.Geophysics,1988,53,(3):402-414.
[7]Lesur V,Cuer M and Straub.A 2-D and 3-D Interpretation ofelectrical tomography measurements,Part 1:The Forward Problem.Geophysics,1999,64,(2):386-395.
[8]陈乐寿.大地电磁测深资料处理与解释.北京:石油工业出版社,1989.
[9]阮百尧.电阻率/激发极化法测深数据的一维最优化反演方法.桂林工学院学报,1999,19,(4):321-325.
[10]李金铭.地电场与电法勘探.北京:地质出版社,2005.
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