Abstract
A new theoretical framework of tracer methods is proposed in the present contribution, on the basis of mass conservation. This modet is applicable for both artificial and natural tracers. It can be used to calculate the spatial distribution patterns of sediment transport rate, thus providing independent information and verification for the results derived from empirical formulae. For the procedures of the calculation, first, the tracer concentration and topographic maps of two times are obtained. Then, the spatial and temporal changes in the concentration and seabed etevation are calculated, and the boundary conditions required are determined by fietd observations (such as flow and bedform migration measurements). Finally, based upon eqs. (1) and (13), the transport rate is calculated and expressed as a function of the position over the study area. Further, appropriate modifications to the modet may allow the tracer to have different densities and grain size distributions from the bulk sediment.
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References
Van Rijn, L. C., Principles of Sediment Transport in Rivers, Estuaries and Coastal Seas, Netherlands: Aqua Publications, 1993, 7.4–7.9.
Hardisty, J., An assessment and calibration of formulations of Bagnold’s bedload equation, Journal of Sedimentary Petrology, 1983,53: 1007.
Vincent, C. E., Young, R. A., Swift, D. J. P., Sediment transport on the Long Island shoreface. North American Atlantic shetf: role of waves and currents in shoreface maintenance, Continental Shetf Research, 1983,2: 163.
Madsen, O. S., Grant, W. D., Quantitative description of sediment transport by waves. Proceedings of the 15th Coastal Engineering Conference, 1976, 1093–1112.
Growchowski, N. T. L., Collins, M. B., Boxall, S. R. et al., Sediment transport predictions for the English Channet, using numerical modets. Journal of the Geological Society, London, 1993, 150: 683.
Jaeger, H. M., Naget, S. R., Behringer, R. P., The physics of granular materials, Physics Today, 1996,49(4): 32.
Heathershaw, A. D., Comparisons of measured and predicted sediment transport rates in tidal currents, Marine Geology, 1981,42: 75.
Kidson, C., Smith, D. B., Steers, J. A., Drift experiments with radioactive pebbles, Nature, 1956,178(4527): 257.
Madsen, O. S., Transport determination by tracer. A: Tracer theory, Nearshore Sediment Transport (ed. Seymour, R. J.), New York: Plenum Press, 1989, 103–114.
Jackson, N. L., Nordstrom, K. F., Depth of activation of sediment by plunging breakers on a steep sand beach, Marine Geology, 1993, 115: 143.
Ciavola, P., Taborda, R., Ferreira, O. et al., Fietd observations of sand-mixing depth on steep beaches, Marine Geology, 1997, 141: 147.
Komar, P. D., Beach Processes and Sedimentation, Englewood Cliffs (New Jersey): Prentice-Hall, 1976, 1–429.
Wang, P., Murray, J. W., The use of foraminifera as indicators of tidal effects in estuarine deposits, Marine Geology, 1983, 51: 239.
Gao, S., Collins, M., Modetling exchange of natural trace sediments between an estuary and adjacent continental shetf, Journal of Sedimentary Petrology, 1992,62: 35.
Gao, S., Collins, M., Net transport direction of sands in a tidal inlet, using foraminiferal tests as natural tracers, Estuarine, Coastal and Shetf Science, 1995,40: 681.
Heathershaw, A. D., Carr, A. P., Measurements of sediment transport rates using radioactive tracers, Coastal Sediments ’77 (ASCE), 1977, 399–416.
Dolphin, T. J., Hume, T. M., Parnell, K. E., Oceanographic processes and sediment mixing on a sand flat in an enclosed sea, Manukau Harbour, New Zealand, Marine Geology, 1995, 128: 169.
Cheong, H. F., Khader, M. N. A., Yong, C. J. et al., The dispersion of radioactive tracers along the east coast of Singapore, Coastal Engineering, 1992, 17: 71.
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Gao, S. A theoretical framework of tracer methods for marine sediment dynamics. Chin. Sci. Bull. 45, 1434–1440 (2000). https://doi.org/10.1007/BF02886254
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DOI: https://doi.org/10.1007/BF02886254