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Porosity determinations of sediments in Knight Inlet using a transient electromagnetic system

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Abstract

A newly developed towed transient electromagnetic (TEM) system is capable of measuring the electrical conductivity of the uppermost 5–10 m of sediments on the sea floor. The profiles of conductivity may be interpreted to give the porosity and likely texture of the bottom sediments. Recent tests of the system have demonstrated that data may be collected continuously in a surveying mode. Results from Knight Inlet, British Columbia, are in good agreement with sea floor samples from the area.

Applications for the system include the rapid identification of sediment types for dredging operations, geotechnical surveys, or reconnaissance mapping of Quaternary geology.

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References

  • Accerboni, E. and Mosetti, F., 1967. A physical relationship among salinity, temperature, and electrical conductivity of seawater.Bollettino Di Geofisica Teorica Ed Applicata 9:87–96.

    Google Scholar 

  • Archie, G.E., 1942. Electrical resistivity as an aid in core analysis interpretation.Transactions of the A.I.M.E. 146:54.

    Google Scholar 

  • Bornhold, B.D. and Prior, D.B., 1989. Sediment blocks on the sea floor in British Columbia fjords.Geo-Marine Letters 9:135–144.

    Article  Google Scholar 

  • Chave, A.D., Constable, S.C., and Edwards, R.N., 1991. Electrical exploration methods for the sea floor.Society of Exploration Geophysics Electrical Methods 2 (in press).

  • Chave, A.D. and Cox, C.S., 1982. Controlled electromagnetic sources for measuring electrical conductivity beneath the oceans. 1. Forward problem and model study.Journal of Geophysical Research 87:5327–5338.

    Article  Google Scholar 

  • Cheesman, S.J., 1989. A short baseline transient electromagnetic method for use on the sea floor.Research in Applied Geophysics, University of Toronto,46, 138 pp.

    Google Scholar 

  • Cheesman, S.J., Edwards, R.N., and Law, L.K., 1990. A test of a short baseline seafloor transient electromagnetic system.The Geophysical Journal 103:431–437.

    Article  Google Scholar 

  • Cheesman, S.J., Edwards, R.N., and Chave, A.D., 1987. On the theory of seafloor conductivity mapping using transient electromagnetic systems.Geophysics 52:204–217.

    Article  Google Scholar 

  • Hamilton, E.L., 1974. Prediction of deep-sea sediment properties. In: Inderbitzen, A.L. (Ed.), Deep-sea sediments: Physical and mechanical properties. Plenum Press, New York. 1–43.

    Google Scholar 

  • Jackson, P.D., Taylor Smith, D., and Stanford, P.N., 1978. Resistivity-porosity-particle shape relationships for marine sands.Geophysics 43:1250–1268.

    Article  Google Scholar 

  • Jupp, D.L.B. and Vozoff, K., 1975. Stable iterative methods for the inversion of geophysical data.Geophysical Journal of the Royal Astronomical Society 42:957–976.

    Article  Google Scholar 

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Authors and Affiliations

  1. Geological Survey of Canada, Pacific Geoscience Centre, V8L 4B2, Sidney, B.C., Canada

    S. J. Cheesman & L. K. Law

  2. Department of Physics, University of Toronto, M5S 1A7, Toronto, Ontario, Canada

    R. N. Edwards

Authors
  1. S. J. Cheesman
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  2. L. K. Law
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  3. R. N. Edwards
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Cheesman, S.J., Law, L.K. & Edwards, R.N. Porosity determinations of sediments in Knight Inlet using a transient electromagnetic system. Geo-Marine Letters 11, 84–89 (1991). https://doi.org/10.1007/BF02431034

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  • DOI: https://doi.org/10.1007/BF02431034

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