A Study on the Finite Difference Forward Modeling in SASW Method

차분 전개를 이용한 표면파 기법의 모형 응답 계산

  • Ha, Hee-Sang (Hyundai Institute of Construction Technology) ;
  • Shin, Chang-Su (Civil, Urban & Geosystem Eng., Seoul National University) ;
  • Seo, Jung-Hee (Civil, Urban & Geosystem Eng., Seoul National University)
  • 하희상 (현대건설(주) 기술연구소) ;
  • 신창수 (서울대학교 지구환경시스템공학부) ;
  • 서정희 (서울대학교 지구환경시스템공학부)
  • Published : 2002.05.01

Abstract

An analytical forward modeling algorithm was developed for the efficient application to the geotechnical engineering in SASW (Spectral Analysis of Surface Waves) method. for the theoretical dispersion curve, the finite difference method using motion stress vector, which was proposed by Aki and Richards, was employed and verified with two earth models. For the stable and fast calculation, it was found that the model size depending on the frequency range is suitable $1.5\~2$ times bigger than the wavelength.