Wavelet Generation and It's Application in Gravity Potential

중력 포텐셜에서의 웨이브렛 생성과 응용

  • Kim, Sam-Tai (Department of Applied Mathematics, Yosu National University) ;
  • Jin, Hong-Sung (Geology and Geoinformation Division, KIGAM) ;
  • Rim, Hyoung-Rae (Department of Applied Mathematics, Yosu National University)
  • 김삼태 (여수대학교 응용수학과) ;
  • 진홍성 (한국지질자원연구원 지질기반정보연구부) ;
  • 임형래 (여수대학교 응용수학과)
  • Published : 2004.02.28

Abstract

A wavelet method is applied to the analysis of gravity potential. One scaling function is proposed to generate wavelet. The scaling function is shown to be replaced to the Green’s function in gravity potential. The upward continuation can be expressed as a wavelet transform i.e. convolution with the scaling function. The scaling factor indicates the height variation. The multiscale edge detection is carried by connecting the local maxima of the wavelet transform at scales. The multiscale edge represents discontinuity of the geological structure. The multiscale edge method is applied to gravity data from Masan and Changwon.

중력 포텐셜의 해석에 웨이브렛 변환 방법을 적용하였다. 웨이브렛을 만드는 단계 함수가 제안되었다. 단계 함수는 중력 포텐셜에서의 그린 함수로 대치될 수 있음이 보여졌다. 상향연속은 단계함수와의 컨볼루션 곧 웨이브렛 변환으로 표현될 수 있다. 단계인자는 높이 변화를 나타낸다. 다중경계는 각 단계에서의 웨이브렛 변환치의 국부 최대값을 연결하여 구해지며 이는 지층의 불연속면을 나타낸다. 다중경계 방법을 마산 창원지역의 중력자료에 적용하였다.

Keywords

References

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