3-D EM Modeling Using Approximate Integral Equation Method for the Models with Non 1-D Background Conductivity

1차원 이외의 배경 전기전도도 구조에서 근사 적분방정식을 이용한 3차원 전자탐사 모델링

  • Lee Seong Kon (Groundwater and Geothermal Resources Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Zhdanov Michael S. (Department of Geology and Geophysics, University of Utah)
  • 이성곤 (한국지질자원연구원 지하수지열연구부) ;
  • Published : 2005.08.01

Abstract

We present a new approximate formulation of the integral equation (IE) method for models with variable background conductivity. This method overcomes the standard limitation of the conventional If method related to the use of a horizontally layered background only. The new approximate IE method still employs the Green's functions for a horizontally layered 1-D model. However, the new method allows us to use an inhomogeneous background with the IE method. The method was carefully tested for modeling the EM field for complex structures with a known variable background conductivity. It can find wide application in modeling EM data for multiple geological models with some common geoelectrical features, like a known inhomogeneous overburden, or salt dome structures.