Interpretation of Physical Properties of Marine Sediments Using Multi­Sensor Core Logger (MSCL): Comparison with Discrete Samples

  • Kim, Gil-Young (Research Institute of Marine Science & Technology, Korea Maritime University) ;
  • Kim, Dae-Choul (Department of Environmental Exploration Engineering, Pukyong National University)
  • Published : 2003.12.01

Abstract

Multi­Sensor Core Logger (MSCL) is a useful system for logging the physical properties (compressional wave velocity, wet bulk density, fractional porosity, magnetic susceptibility and/or natural gamma radiation) of marine sediments through scanning of whole cores in a nondestructive fashion. But MSCL has a number of problems that can lead to spurious results depending on the various factors such as core slumping, gas expansion, mechanical stretching, and the thickness variation of core liner and sediment. For the verification of MSCL data, compressional wave velocity, wet bulk density, and porosity were measured on discrete samples by Hamilton Frame and Gravimetric method, respectively. Acoustic impedance was also calculated. Physical property data (velocity, wet bulk density, and impedance) logged by MSCL were slightly larger than those of discrete sample, and porosity is reverse. Average difference between MSCL and discrete sample at both sites is relatively small such as 22­24 m/s in velocity, $0.02­-0.08\;g/\textrm{cm}^3$ in wet bulk density, and 2.5­2.7% in porosity. The values also show systematic variation with sediment depth. A variety of factors are probably responsible for the differences including instrument error, various measurement method, sediment disturbance, and accuracy of calibration. Therefore, MSCL can be effectively used to collect physical property data with high resolution and quality, if the calibration is accurately completed.

Keywords

References

  1. Mar. Geol. v.160 Calibration of marine sediment core loggers for quantitative acoustic impedance studies Best,A.I.;Gunn,D.E. https://doi.org/10.1016/S0025-3227(99)00017-1
  2. J. Geophys. Res. v.65 The velocity of compressional waves in rocks up to 10 kilobars Birch,F. https://doi.org/10.1029/JZ065i004p01083
  3. Ocean Drilling Program Technical Note A guide to the shipboard measurement of physical properties of deep-sea cores by the Ocean Drilling Program Blum,P.
  4. Appendix.Physical property methods. In:Initial Reports Deep Sea Drilling Project 15 Boyce,R.E.;Edgar, N.T.(ed.);J.B.Saunders(ed.)
  5. Wave Motion v.37 Comparison between experimental results and theoretical predictions for P-wave velocity and attenuation at ultrasonic frequency Diallo,M.S.;M.Prasad,E.Appel https://doi.org/10.1016/S0165-2125(02)00018-5
  6. GRAPE-a divice for continuous determination of material density and porosity, Society of professional well log analysts,logging $6^th$ annual symposium. Transcations v.2 Evans,H.B.
  7. Geo-Marine Lett. v.15 Nondestructive density determination on marine sediment cores from gamma ray attenuation measurements Gerland,S.;H.Villinger https://doi.org/10.1007/BF01275415
  8. Geo-Marine Lett. v.18 A new automated nondestructive system for high resolution multi-sensor core logging of open sediment cores Gunn,D.E.;A.I.Best https://doi.org/10.1007/s003670050054
  9. Geophys. v.36 Prediction of in-situ acoustic and elastic properties of marine sediments Hamilton,E.L. https://doi.org/10.1190/1.1440168
  10. NORDA Report 169 An evaluation of the Honeywell ELAC computerized sediment classification system Lambert,D.N.
  11. Marine Technology Society Conference Proceedings Methods of high resolution remote seafloor characterization Lambert,D.N.;H.Fiedler
  12. Proceedings of the Institute of Acousitcs v.15 Development of a high resolution acoustic seafloor classfication survey system.Acoustic Classification and Mapping of the Seabed Lambert,D.N.;J.C.Cranford;D.J.Walter;Pace,N.G.(ed.);D.N.Langhorne(ed.)
  13. Mar. Geol. v.182 Variability in the acoustic response of shallow-water marine sediments determined by normal-incident 30 kHz and 50 kHz sound Lambert,D.N.;M.T.Kalcic;R.W.Fass https://doi.org/10.1016/S0025-3227(01)00234-1
  14. Late Quzternary sediment,sediment mass flow processes and slope stability on the Scotian Slope v.41 Mosher,D.C.;K.Morgan;R.N.Hiscott
  15. Deep-Sea Res. v.15 Nondestructive laboratory measurement of marine sediment density in a core barrel using gamma radiation Preiss,K.
  16. Mar. Geol. v.182 The effects of biological and hydrodynamic processes on physical and acoustic properties of sediemnts off the Ecl River, California Richardson,M.D.;K.B.Briggs;S.J.Bently;D.J.Walter;T.H.Orsi https://doi.org/10.1016/S0025-3227(01)00231-6
  17. Proc. ODP Sci. Results. An automated P-wave logger for recording fine scale compressional wave velocity structures in sediments,Ocean Drilling Program Schultheiss,P.J.;S.D.McPhail
  18. Proceedings Ocean Drilling Program, Scientific Results v.108 Multi-sensor core logging for science and industry Schultheiss,P.J.;P.P.E.Weaver
  19. Geo-Mar. Lett. v.17 Mapping sediement scoustic impedance using remote sensing acoustic techniques in a shallow-water carbonate environment Walter,D.J.;D.N.Lambert;D.C.Young;K.P.Stephens https://doi.org/10.1007/s003670050036
  20. Proceedings of the MTS Ocean Community Conference 98 Sediment characterization and mapping using high frequency acoustic and core data in the Chesapeake Bay Walter,D.J.;D.N.Lambert;D.C.Young
  21. Mar. Geol. v.182 Sediment facies determination using acoustic techniques in shallow water carbonate environment Walter,D.J.;D.N.Lambert;D.C.Young https://doi.org/10.1016/S0025-3227(01)00233-X
  22. Mar. Geophys. Res. v.12 Current methods for obtaining,logging and splitting marine sediment cores Weaver,P.P.E.;P.J.Schultheiss https://doi.org/10.1007/BF00310565
  23. Mar. Geol. v.136 Calibration and application of marine sedimentary physical properties using a multi-sensor core logger Weber,M.E.;F.Niessen;G.Kuhn;M.Wiedicke https://doi.org/10.1016/S0025-3227(96)00071-0