可控源音频大地电磁法(CSAMT)一维全区Levenberg-Marquardt反演方法

Science Technology and Engineering(2014)

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Abstract
将Levenberg-Marquardt这一全新反演方法引入可控源音频大地电磁法(CSAMT)勘探的全区数据反演,提高了CSAMT勘探的深度,避免了测深数据的浪费.Levenberg-Marquardt反演的核心是引入变阻尼的思想,在反演的过程中根据向量各个分量的收敛速度的不同,给定不同的阻尼因子,实现反演的自适应化,这样就大大增加了整个反演的收敛速度和反演精度.反演中采用改进的Bostick变换作为初始模型,减少了反演的迭代次数.
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Key words
controlled source audio-frequenay magneto-telluric (CSAMT),Levenberg-Marquardt Inversion,Bostick transform
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