Abstract
Sand transport rates were measured via bedload traps that were inserted into the sediment surface on the continental shelf southwest of England. Analysis of the trapped mobile sediment shows this to be finer and better sorted than nearby Shipek grab samples. The transport rates are combined with simultaneous, near-bed flow measurements to assess a Bagnold type predictive equation,j = k 1(u 2 100 -u 2 100cr)u 100. The measured transport rates vary between 0.41 × 10−3 and 1.67 × 10−3 gm/cm s. The data yield a mean calibration coefficient (k 1) of 0.4 × 10−6 which is slightly lower than values computed from flume and shallow water data.
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Heathershaw, A. D., Hammond, F. D. C., 1979. Swansea Bay (Sker) Project Topic Report 6. Offshore sediment movement and its relation to the observed tidal current and wave data. Institute of Oceanographic Sciences Report 93.
Heathershaw, A. D., 1981. Comparison of measured and predicted sediment transport rates in tidal currents. Marine Geology 42, 75–104.
Langhorne, D. N., 1982. A study of the dynamics of a marine sand wave. Sedimentology 29, 571–594.
Sternberg, R. W., 1967. Measurements of sediment movement and ripple migration in a shallow marine environment. Marine Geology 5, 195–205.
Sternberg, R. W., 1972. Predicting initial motion and bedload transport of sediment particles in the shallow marine environment. In: D. J. P. Swift, D. B. Duane, and O. H. Pilkey (eds.), Shelf Sediment Transport. Dowden, Hutchinson and Ross, Stroudsburg, Pa., pp. 61–82.
Gadd, P. E., Lavell, J. W., Swift, D. J. P., 1978. Estimates of sand transport on the New York Shelf using near-bottom current-meter observations. Journal of Sedimentary Petrology, 48, 239–252.
Lavelle, J. W., Gadd, P. E., Han, G. C., Mayer, D. A., Stubblefield, W. L., Swift, D. J. P., Charnell, R. L., Brashear, H. R., Case, F. N., Half, K. W., Kunselman, C. W., 1976. Preliminary results of coincident current-meter and sediment transport observations for wintertime conditions on the Long Island inner shelf. Geophysical Research Letters 3, 97–100.
Smith, J. D., Hopkins, T. S., 1972. Sediment transport on the continental shelf off of Washington and Oregon in the light of recent current measurements. In: D. J. P. Swift, D. B. Duane, and O. H. Pilkey (eds.), Shelf Sediment Transport. Dowden, Hutchinson and Ross, Stroudsburg, Pa., pp. 143–180.
Vincent, C. E., Swift, D. J. P., Hillard, B., 1981. Sediment transport in the New York Bight, North American Atlantic shelf. Marine Geology 42, 369–398.
Stride, A. H., 1982. Offshore Tidal Sands. Chapman and Hall, London.
Allen, J. R. L., 1981. Lower Cretaceous tides revealed by cross bedding with mud drapes. Nature 289, 579–581.
Allen, J. R. L., 1981. Palaeotidal speeds and ranges estimated from cross-bedding sets with mud drapes. Nature 293, 394–396.
Guy, H. P., Simons, D. B., Richardson, E. V., 1966. Summary of alluvial channel data from flume experiments 1955–1961. U.S. Geological Survey Professional Papers 4621.
Williams, G. P., 1967. Flume experiments on the transport of a coarse sand. U.S. Geological Survey Professional Papers 562-B.
Ackers, P. and White, W. R., 1973. Sediment transport: new approach and analysis. Proceedings of the American Society of Civil Engineers, Journal of the Hydraulics Division HY11, 2041–2060.
Hamilton, D., Sommervile, J. H., and Stanford, P. N., 1980. Bottom currents and shelf sediments, southwest of Britain. Sedimentary Geology 26, 115–138.
Van Veen, J., 1936. Onderzoekingen in de Hoofden, s'-Gravenhage.
Channon, R. D. and Hamilton, D., 1971. Sea bottom velocity profiles on the continental shelf southwest of England. Nature 231, 383–385.
Hubell, D. W., 1964. Apparatus and techniques for measuring bedload. U.S. Geological Survey Water Supply Paper 1748.
Channon, R. D. and Hamilton, D., 1975. Wave and tidal-current sorting of shelf sediments south west of England. Sedimentology 23, 17–42.
Sengupta, S., 1975. Size sorting during suspension transportation log-normality and other characteristics. Sedimentology 22, 257–273.
Bagnold, R. A., 1963. Mechanics of marine sedimentation In: M. N. Hill, (ed.), The Sea 3, The Earth Beneath the Sea. John Wiley-Interscience, New York, pp. 507–582.
Bagnold, R. A., 1966. An approach to the sediment transport problem from general physics. U.S. Geological Survey Professional Paper 422-1.
Hardisty, J. 1983. An assessment and calibration of formulations for Bagnold's bedload equation. Journal of Sedimentary Petrology 53, 1007–1010.
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Hardisty, J., Hamilton, D. Measurements of sediment transport on the sea bed southwest of England. Geo-Marine Letters 4, 19–23 (1984). https://doi.org/10.1007/BF02237969
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DOI: https://doi.org/10.1007/BF02237969