The Journal of the Acoustical Society of Korea

The Acoustical Society of Korea (한국음향학회)
권호 표지

Acoustic and Elastic Properties of the Southeastern Yellow Sea Mud, Korea

  • Kim, Gil-Young (Research Institute of Marine Science and Technology, Korea Maritime University)
  • Published : 2006.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Compressional wave velocity (Vp), shear wave velocity (Vs), elastic and physical properties, and electrical resistivity for two core sediments obtained from Southeastern Yellow Sea Mud (SEYSM) were measured and computed. The sediments consist of homogeneous mud (mostly silt and clay) with shells and shell fragments. As a result, the mean grain size is uniform ($7.5-8.5{\Phi}$ throughout the core sediments. However, physical properties such as wet bulk density and porosity show slightly increasing and decreasing patterns with depth, compared to the mean grain size. The compressional (about 1475 m/s in average) and shear wave (about 60 m/s in average) velocities with depth accurately reflect the pattern of wet bulk density and porosity. Electrical resistivity is more closely correlated with compressional wave velocity than physical properties. The computed Vp/Vs and Poisson's ratios are relatively higher (more than 10) and lower (approximately 0.002) than Hamilton's (1979) data, respectively, suggesting the typical characteristics of soft and fully water-saturated marine sediments. Thus, the Vp/Vs ratio in soft and unconsolidated sediments is not likely sufficient to examine lithology and sediment properties. Relationships between the elastic constant and physical properties are correlated well. The elastic constants (Poisson's ratio, bulk modulus, shear modulus) given in this paper can be used to characterize soft marine sediments saturated with seawater.

Keywords

References

  1. E.L. Hamilton, 'The elastic properties of marine sediments', Journal of Geophysical Research, 76, 579-604, 1971 https://doi.org/10.1029/JB076i002p00579
  2. R.H. Tatham and P.L. Staffa, 'Vp/Vs-A potential hydrocarbon indicator', Geophysics, 41, 837-849, 1976 https://doi.org/10.1190/1.1440668
  3. A.R. Gregory, 'Fluid saturation effects on dynamic elastic properties of sedimentary rocks'. Geophysics, 41, 895-921, 1976 https://doi.org/10.1190/1.1440671
  4. E.L. Hamilton, 'Vp/Vs and poisson' s ratios in marine sediments and rocks'. Journal of the Acoustical Society of America, 66, 1093-1101, 1976 https://doi.org/10.1121/1.383344
  5. G.E. Archie, 'The electrical resistivity log as an aid in determining some reservoir characteristics'. Petroleum Transactions American Institute of Mining, Metallugical, and Petroleum Engineers, 146, 54-62, 1942
  6. R.E. Boyce, Definitions and laboratory determination of compressional sound velocity parameters and wet-water content, wet-bulk density and porosity parameters by gravimetric and gamma-ray attenuation techniques. In: Schlanger, S.O., Jackson, E.D. et al, (eds.), Initial Reports of Deep Sea Drilling Program, 33; Washington (U,S, Govt, Printing Office), 931-958, 1976
  7. F. Birch, 'The velocity of compressional waves in rocks up to 10 kilobars. Journal of Geophysical Research' 65, 1083-1102, 1960 https://doi.org/10.1029/JZ065i004p01083
  8. G.Y. Kim and D.C. Kim, 'Shear wave velocity in unconsolidated marine sediments of the western continental margin, the East Sea', The Journal of the Acoustical Society of Korea, 22, 167-175, 2003
  9. G.R. Olhoeft, Initial reports of the petrophysical laboratory: 1977-1979 addendum, (U.S. Geological Survey Open File Report 80-522, 44, 1980)
  10. Y.K. Seo, D.C. Kim, and S.C. Park, 'Characteristics of velocity and electrical resistivity in gassy sediments: Results of mudbelt sediments in the southeastern inner shelf of Korea'. Journal of the Korean Society of Oceanography, 6, 249-258, 2001, (in Korean with English abstract)
  11. H.J. Lee and S.K. Chough, 'Sediment distribution, dispersal and budget in the Yellow Sea, Marine Geology', 87, 195-205, 1989 https://doi.org/10.1016/0025-3227(89)90061-3
  12. J.H. Jin and S.K. Chough, 'Partitioning of transgressive deposits in the southeastern Yellow Sea: a sequence stratigraphic interpretation', Marine Geology, 149, 79-82, 1998 https://doi.org/10.1016/S0025-3227(98)00023-1
  13. G.Y. Kim, D.C. Kim, S.J. Kim, Y.K. Seo, J.H. Jung, and Y.E. Kim, 'Physical properties of southeastern Yellow Sea Mud (SEYSM): Comparison with the East Sea and the South Sea mud belts of Korea', Journal of the Korean Society of Oceanography, 5, 335-345, 2000, (in Korean with English abstract)
  14. M.D. Richardson, E. Muzi, B. Miaschi and F. Turgutcan, 'Shear wave velocity gradient in near-surface marine sediment', In: Hovem, J.M., Richardson, M.D. and Stoll, A.D. (eds.), Shear wave in marine sediments. Kluwr Academic Pub., Netherlands, 295-304, 1991
  15. F.J. McDonal, F.A. Angona, R.L. Mills, R.R. Sengbush, R.G. Van Norstrand and J.E. White, 'Attenuation of shear and compressional waves in Pierre Shale', Geophysics 23, 421-439, 1985 https://doi.org/10.1190/1.1438489
  16. J.E. White and R.L. Sengbush, 'Shear waves from explosive sources', Geophysics 28, 1001-1019, 1963 https://doi.org/10.1190/1.1439296
  17. R.L. Geyer and S.T. Martner, 'SH waves from explosive sources,' Geophysics 34, 893-905, 1969 https://doi.org/10.1190/1.1440060
  18. E.L. Hamilton and R.T. Bachman, 'Sound velocity and related properties of marine sediments', Journal of Acoustical Society of America, 72, 1891-1904, 1982 https://doi.org/10.1121/1.388539
  19. M.D. Richardson, 'In situ shallow water sediment geoacoustic properties', International Conference on Shallow water Acoustics, Beijing, China, 21-25, 1997
  20. E.L. Hamilton, 'Geoacoustic modeling of the sea floor', Journal of Acoustical Society of America, 68, 1313-1340, 1980 https://doi.org/10.1121/1.385100
  21. A.J. Silva and H.G. Brandes, 'Geotechnical properties and behavior of high-porosity, organic rich sediments in Eckernforde Bay, Germany', Continental Shelf Research, 18, 1917-1938, 1998 https://doi.org/10.1016/S0278-4343(98)00063-6
  22. E.L. Hamilton, 'Shear wave velocity versus depth in marine sediments: A review', Geophysics, 68, 985-996, 1976