Traditional two-dimensional（2D） complex resistivity forward modeling is based on Poisson＇s equation but spectral induced polarization（SIP） data are the coproducts of the induced polarization（IP） and the electro...
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Traditional two-dimensional（2D） complex resistivity forward modeling is based on Poisson＇s equation but spectral induced polarization（SIP） data are the coproducts of the induced polarization（IP） and the electromagnetic induction（EMI） *** is especially true under high frequencies,where the EMI effect can exceed the IP effect.2D inversion that only considers the IP effect reduces the reliability of the inversion *** this paper,we derive differential equations using Maxwell＇s *** the introduction of the Cole-Cole model,we use the finite-element method to conduct2 D SIP forward modeling that considers the EMI and IP effects *** data-space Occam method,in which different constraints to the model smoothness and parametric boundaries are introduced,is then used to simultaneously obtain the four parameters of the Cole-Cole model using multi-array electric field *** approach not only improves the stability of the inversion but also significantly reduces the solution *** improve the computational efficiency,message passing interface programming was used to accelerate the 2D SIP forward modeling and *** datasets were tested using both serial and parallel algorithms,and the tests suggest that the proposed parallel algorithm is robust and efficient.
在喜马拉雅造山带东缘,南迦巴瓦变质岩迅速抬升,雅鲁藏布江缝合带在这里突然发生转变.尽管学者们已经提出了一些似乎可信的模型来解释南迦巴瓦的演变,如构造锲、地壳缩短、双重逆冲,以及隧道流模型等,但是喜马拉雅东构造结(EHS)的变形机制仍备受争议(Bai et al.,2010;Peng et al.,2016;Lin et al.,2017).为了更好地了解喜马拉雅东构造结的三维岩石圈结构,从2009年到2014年,在南迦巴瓦地区共布设了83个大地电磁(MT)测点和35个宽频带地震测点(如图1).
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