Resistivity Inversion of Underground Cavity Model Using a Multi-Resolution Wavelet

다중분해능 웨이브렛에 의한 지하공동모형의 전기비저항 역산

  • 서백수 (강원대학교 지구환경공학부) ;
  • 이재영 (강원대학교 지구환경공학부) ;
  • 김용인 (강원대학교 지구환경공학부) ;
  • 이창환 (서울대학교 전기전자공학부)
  • Published : 2002.05.01

Abstract

The finite element method combined with the sensitivity method is adopted for 2-dimensionl Fourier transform inversion. To improve the efficiency of inversion calculation, multi-resolution wavelet method is proposed., Theoretical data which is obtained from above method is shown to examine the proposed method. Theoretical model assumes that underground cavity is located in limestone area. In theoretical model, 16 current and potential electrodes are located to get theoretical data. It is shown that the about inversion method is very exact and useful calculation method, in case the larger model is very small such as under ground cavity.