Journal of the Korean Geophysical Society (지구물리)

Korean Society of Earth and Exploration Geophysicists (한국지구물리·물리탐사학회)
권호 표지

Moho Depth Variation and Vp/Vs ratios in the Southern Korean Peninsula from Teleseismic Receiver Functions

  • Yoo, H.J. (Korea Polar Research Institute, KORDI) ;
  • Lee, K. (Korea Polar Research Institute, KORDI) ;
  • Herrmann, R.B. (Department of Earth and Atmospheric Sciences, Saint Louis University)
  • Published : 20060000
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, we applied the teleseismic receiver function technique to determine the crustal thicknesses and ratios for 31 broadband stations of the Korean Peninsula and map out the lateral variation of Moho depth in the Peninsula. The estimated depths to Moho range from 26 to 35 km except for an island station ULL (17 km). The Moho is turned out to be deeper in the south-western part of the Peninsula and western Gyeongsang basin, and shallower in the off-shore region close to East Sea (Sea of Japan). The ratio varies from 1.69 to 1.89 with the average of 1.77, which is close to global average (1.78) in the crust.

Keywords

References

  1. Anderson, D. L. (1989). Theory of the Earth, Blackwell Sci., Malden, Mass
  2. Carmichael, R. S (1982) Practical handbook of physical properties of rocks Vol II, CRC Press
  3. Chang, S. and C. Baag (2005). Crustal Structure in Southern Korea from Joint Analysis of Teleseismic Receiver Functions and Surface-Wave Dispersion, Bull. Seism. Soc. Am., 95, 1516-1534 https://doi.org/10.1785/0120040080
  4. Cho, K. H., R. B. Herrmann, C. J. Ammon, and K. Lee (2006). Imaging the crust of the Korean Peninsula by surface-wave tomography, Bull. Seism. Soc. Am., in review
  5. Choi, K. S. and Y. H. Shin (1996). Isostasy in and around the Korean Peninsula by analyzing gravity and topography data, J. Geol. Soc. Korea 32, 407-420 (in Korean)
  6. Christensen, N. I. (1996) Poisson's ratio and crustal seismology, J. Geophys. Res., 101, 3139-3156 https://doi.org/10.1029/95JB03446
  7. Kim, J. W., J. D. Cho, W. K. Kim, K. D. Min, J. H. Hwang, Y. S. Lee, C. H. Park, J. H. Kwon, and J. S. Hwan (2003). Extraction of Moho undulation of the Korean Peninsula from gravity anomalies, Econ. Environ. Geol. 36, 213-223 (in Korean)
  8. Kim, S. J. and S. G. Kim (1983). A study on the crustal structure of South Korea by using seismic waves, J. Korean Inst. Mining Geol. 16, 51-61 (in Korean)
  9. Kim, S. K. (1995). A study on the crustal structure of the Korean peninsula, J. Geol. Soc. Korea 31, 393-403 (in Korean)
  10. Kwon, B. D. and S. Y. Yang (1985). A study on the crustal structure of the southern Korean Peninsula through gravity analysis, J. Korean Inst. Mining Geol. 18, 309-320
  11. Lee, K. (1979a). On crustal structure of the Koean Peninsula, J. Geol. Soc. Korea 15, 255-258
  12. Lee, K. (1979b). On Isostasy of the Korean Peninsula, J. Geol. Soc. Korea 15, 134-140
  13. Ligorria, J. P. and C. J. Ammon (1999). Iterative deconvolution of teleseismic seismograms and receiver function estimation, Bull. Seism. Soc. Am. 89, 1395-1400
  14. Smith, W. H. F. and P. Wessel (1990). Gridding with continuous curvature splines in tension, Geophysics 55, 293-305 https://doi.org/10.1190/1.1442837
  15. Song, S. G. and K. Lee (2001). Crustal structure of the Korean Peninsula by travel time inversion of local earthquakes, J. Geophys, Soc. Korea, Vol. 4, 21-33
  16. Wessel, P. and Smith, W. (1995). New version of the generic mapping tools released. EOS Trans. AGU 76, 329
  17. Yoo, H. J., R. B. Herrmann, K. H. Cho, and K. Lee (2006). Imaging the Three-Dimensional Crust of the Korean Peninsula by Joint Inversion of Surface-Wave Dispersion and Teleseismic Receiver Functions, Bull. Seism. Soc. Am., in review
  18. Zandt, G. and C. J. Ammon (1995). Continental-crust composition constrained by measurements of crustal Poissons ratio, Nature, 374, 152-154 https://doi.org/10.1038/374152a0
  19. Zandt, G., S. C. Myers, and T. C. Wallace (1995). Crust and mantle structure across the Basin and Range-Colorado Plateau boundary at $37^{\circ}N$ latitude and implications for Cenozoic extensional mechanism, J. Geophys. Res., 100, 10529-10548 https://doi.org/10.1029/94JB03063
  20. Zhu, L. and H. Kanamori (2000). Moho depth variation in southern California from teleseismic receiver functions, J. Geophys. Res., 105, 2969-2980 https://doi.org/10.1029/1999JB900322