New 3D parallel GILD electromagnetic modeling and nonlinear inversion using global magnetic integral and local differential equation

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This paper describes a new 3D parallel GILD electromagnetic (EM) modeling and nonlinear inversion algorithm. The algorithm consists of: (a) a new magnetic integral equation instead of the electric integral equation to solve the electromagnetic forward modeling and inverse problem; (b) a collocation finite element method for solving the magnetic integral and a Galerkin finite element method for the magnetic differential equations; (c) a nonlinear regularizing optimization method to make the inversion stable and of high resolution; and (d) a new parallel 3D modeling and inversion using a global integral and local differential domain decomposition technique (GILD). The new 3D ... continued below

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49 p.

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Xie, G.; Li, J.; Majer, E. & Zuo, D. July 1, 1998.

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Description

This paper describes a new 3D parallel GILD electromagnetic (EM) modeling and nonlinear inversion algorithm. The algorithm consists of: (a) a new magnetic integral equation instead of the electric integral equation to solve the electromagnetic forward modeling and inverse problem; (b) a collocation finite element method for solving the magnetic integral and a Galerkin finite element method for the magnetic differential equations; (c) a nonlinear regularizing optimization method to make the inversion stable and of high resolution; and (d) a new parallel 3D modeling and inversion using a global integral and local differential domain decomposition technique (GILD). The new 3D nonlinear electromagnetic inversion has been tested with synthetic data and field data. The authors obtained very good imaging for the synthetic data and reasonable subsurface EM imaging for the field data. The parallel algorithm has high parallel efficiency over 90% and can be a parallel solver for elliptic, parabolic, and hyperbolic modeling and inversion. The parallel GILD algorithm can be extended to develop a high resolution and large scale seismic and hydrology modeling and inversion in the massively parallel computer.

Physical Description

49 p.

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OSTI as DE99002422

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  • 67. annual meeting and expo of the Society of Exploration Geophysicists (SEG), Dallas, TX (United States), 2-7 Nov 1997

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  • Other: DE99002422
  • Report No.: LBNL--42105
  • Report No.: CONF-971111--
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 334369
  • Archival Resource Key: ark:/67531/metadc677624

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 1, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Jan. 19, 2018, 2:04 p.m.

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Xie, G.; Li, J.; Majer, E. & Zuo, D. New 3D parallel GILD electromagnetic modeling and nonlinear inversion using global magnetic integral and local differential equation, article, July 1, 1998; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc677624/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.