胡祖志,胡祥云,吴文鹂,桑卓
HU Zu-zhi~1; HU Xiang-yun~1; WU Wen-li~2;SANG Zhuo~1(1. Institute of Geophysics & Geomatics China University of Geosciences;

• 1:中国地质大学地球物理与空间信息学院
• 2:中国地质大学地球物理与空间信息学院
• 3:国土资源部物化探研究所
• 4:中国地质大学地球物理与空间信息学院 湖北武汉430074

摘要(Abstract)：

由反演方程出发 ,从构造目标函数和方程求解方面 ,比较了国际上通用的OCCAM (奥可姆法 )、RRI(快速松弛法 )和REBOCC(简化基奥可姆法 ) ,并由两个合成模型分析比较了OCCAM、RRI和REBOCC的反演结果。试验表明 ,REBOCC是继RRI之后又一种较快的反演方法 ,可为电法勘探资料处理提供新的途径。而在RRI和REBOCC反演时 ,网格的划分对结果很有影响 ,这是值得注意的地方
Firstly, we review several general methods of two-dimensional magnetotelluric inversion in the international such as OCCAM, RRI and REBOCC from the inverse equation, then compare the objective functions and solving methods. And we compare the inverse results of OCCAM, RRI and REBOCC through two synthetic models. Numerical experiments show that REBOCC is a fast inverse method, which will provide a new and fast approach for the processing of electrical exploration data. However, when using RRI and REBOCC, it should be concerned that the grid will affect the result.

关键词(KeyWords)： 二维反演;大地电磁;电法勘探
two-dimensional inversion; magnetotelluric; electrical exploration

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 胡祖志,胡祥云,吴文鹂,桑卓
HU Zu-zhi~1; HU Xiang-yun~1; WU Wen-li~2;SANG Zhuo~1(1. Institute of Geophysics & Geomatics China University of Geosciences;

参考文献(References)：

• [1]　张翔,胡文宝.带地形的大地电磁测深联合二维反演[J].石油地球物理勘探,1999,34(2):190-196.
• [2]　杨长福,林长佑等.用Occam法及广义逆法对兰州地区MT资料的一维反演解释[J].西北地震学报,2002,24(4):289-294.
• [3]　MehaneeSAandZhdanovMS .Magnetotelluricinversionofblockygeoelectricalstructuresusingtheminimumsupportmethod[J].SEG1999ExpandedAbstracts,1999.
• [4]　FarquharsonCGandOldenburgDW .Approximatesensitivitiesfortheelectromagneticinverseproblem[J].Geophys.J.Internat.,1996,126:235-252.
• [5]　OldenburgDW ,McGillivrayPRandEllisRG .Generalizedsubspacemethodsforlarge-scaleinverseproblems[J].Geophys.J.Internat.,1993,114:12-20.
• [6]　PortniaguineOandZhdanovMS .Focusinggeophysicalinversionim ages[J].Geophysics,1999,64(3):874-887.
• [7]　ConstableSCetal.Occam’sinversiontogeneratesmooth,two-di mensionalmodelsfrommagnetotelluricdata[J].Geophysics,1990,55(12):1613-1624.
• [8]　SmithJTandBookerJR .Rapidinversionoftwo-andthree-di mensionalmagnetotelluricdata[J].J.Geophys.Res.,1991,96:3905-3922.
• [9]　RodiWLandMackieRL .Nonlinearconjugategradientsalgorithmfor2-Dmagnetotelluricinversion[J].Geophysics,2001,66(1):174-187.
• [10]　SiripunvarapornWandEgbertG .Anefficientdata-subspaceinver sionmethodfor2-Dmagnetotelluricdata[J].Geophysics,2000,65(3):791-803.
• [11]　王家映.地球物理反演理论[M].武汉:中国地质大学出版社,1998.
• [12]　ConstableSC ,ParkerRLandConstableCG .Occam’sinversion:Apracticalalgorithmforgeneratingsmoothmodelsfromelectromag neticsoundingdata[J].Geophysics,1987,52(3):289-300.
• [13]　王若,王妙月.可控源音频大地电磁数据的反演方法[J].地球物理学进展,2003,18(2):197-202.

文章评论(Comment)：