Journal of the Korean Geophysical Society (지구물리)

Korean Society of Earth and Exploration Geophysicists (한국지구물리·물리탐사학회)
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Separation of Seismic Signals using a Polarization Filter based on the Complex Trace Analysis Method

복소트레이스 분극필터를 이용한 다성분 탄성파자료 신호분리

  • Kim, Ki-Young (Department of Geophysics, Kangwon National University) ;
  • Lee, So-Young (Department of Geophysics, Kangwon National University)
  • 김기영 (강원대학교 지구물리학과) ;
  • 이소영 (강원대학교 지구물리학과)
  • Published : 2005.03.01
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Abstract

Polarization filtering based on the multicomponent complex trace analysis method is performed to reject Rayleigh waves and to enhance S waves. To test the polarization filter, synthetic seismic data were constructed for a simple two-layer model based on the finite difference method. Rayleigh waves with elliptic motion are eliminated effectively and P and S waves with linear motions are well separated each other.

천부 탄성파 탐사 기록에서 신호부를 약화시키는 레일리파를 제거하고, 초동 인지가 어려운 S파 신호를 강화하는 방법을 제시하고자 다성분 복소트레이스 분석법에 기초한 분극필터를 작성하였다. 이 분극필터의 효율성을 시험하기 위해서 단순한 수평 2층 모델 자료를 유한차분법으로 합성하였다. 그 결과 타원운동을 하는 레일리파가 비교적 잘 제거되고 선형운동의 P파와 S파도 효과적으로 분리됨을 볼 수 있었다.

Keywords

References

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