The Crustal and Upper Mantle Velocity Structure of the Southern Korean Peninsula from Receiver Functions and Surface-Wave Dispersion

수신함수와 표면파 분산의 동시역산을 이용한 한반도 남부지역의 지각과 상부맨틀 연구

  • Yoo, H.J. (School of Earth and Environmental Science, Seoul National University) ;
  • Lee, K. (School of Earth and Environmental Science, Seoul National University) ;
  • Herrmann, R.B. (Department of Earth and Atmospheric Sciences, Saint Louis University)
  • 유현재 (서울대학교 지구환경과학부) ;
  • 이기화 (서울대학교 지구환경과학부) ;
  • Published : 2006.06.08

Abstract

3-D S-wave velocity model in the southern Korean Peninsula is investigated by using the joint inversion of receiver functions and surface-wave dispersion. A peninsula average Rayleigh-wave phase velocity in the 10-150 seconds range and tomographic estimates of the Rayleigh and Love wave group velocities in the 0.5-20 seconds period range determined using a $12.5{\times}12.5\;km$ grid for the southern part of the peninsula are used for the inversion. Receiver functions were determined from broadband (STS-2), short-period (SS-1) and acceleration (Episensor) channels of 95 stations. The dense distribution of the stations in the Peninsula permits us to examine the 3-D crustal structure in detail. The inversion result shows the variation and characteristics of S-wave velocity in the crust and upper mantle of the southern Korean Peninsula very well.