Fast numerical modeling of multitransmitter electromagnetic data using multigrid Quasi-Linear approximation

Takumi Ueda, Michael S. Zhdanov

Research output: Contribution to journalArticle

27 Citations (Scopus)


Multitransmitter electromagnetic (EM) surveys are widely used in remote-sensing and geophysical exploration. The interpretation of the multitransmitter geophysical data requires numerous three-dimensional (3-D) modelings of the responses of the receivers for different geoelectrical models of complex geological formations. In this paper, we introduce a fast method for 3-D modeling of EM data, based on a modified version of quasilinear approximation, which uses a multigrid approach. This method significantly speeds up the modeling of multitransmitter-multireceiver surveys. The developed algorithm has been applied for the interpretation of marine controlled-source electromagnetic (MCSEM) data. We have tested our new method using synthetic problems and for the simulation of MCSEM data for a geoelectrical model of a Gemini salt body.

Original languageEnglish
Pages (from-to)1428-1434
Number of pages7
JournalIEEE Transactions on Geoscience and Remote Sensing
Issue number6
Publication statusPublished - 2006 Jun
Externally publishedYes



  • Electromagnetic (EM)
  • Multigrid approach
  • Multitransmitter modeling
  • Quasilinear (QL) approximation

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Computers in Earth Sciences
  • Electrical and Electronic Engineering

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