Fluidization of Soft Estuarine Mud by Waves
The interaction between waves and soft muddy bottoms, a key process in governing estuarine and lacustrine cohesive sediment transport, is at present not well understood. What is quite well known, however, is that waves are significantly important in generating fluid mud, a high concentration near-bed slurry, which thereby becomes potentially available for transport by tidal currents. It follows that the precise mechanism by which fluid mud is formed by wave action over cohesive, porous solid beds is of evident interest in understanding and interpreting the microfabric of flow-deposited fine sediments in shallow waters. Results from preliminary laboratory tests described using known soil mechanical principles shed some light along these lines, and suggest that the fluidization process may be even more significant in generating potentially transportable sediment than previously realized.
KeywordsClay Beach Turbidity Advection Trench
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- Kemp, G.P., and J.T. Wells, 1987. Observations of shallow-water waves over a fluid mud bottom: implications to sediment transport. Proceedings of Coastal Sediments ’87, v. 1, American Society of Civil Engineers, New York, p. 363–377.Google Scholar
- Maa, P.-Y., 1986. Erosion of soft muds by waves. Ph.D. thesis, University of Florida, Gainesville, 296 p.Google Scholar
- Pamukcu, S., and J.N. Suhayda, 1987. High resolution measurement of shear modulus of clay using triaxial vane device. In: Cakmak, A.S. (ed.), Soil Mechanics and Liquefaction. Elsevier, Amsterdam, p. 307– 321.Google Scholar
- Perloff, W.H., and W. Baron, 1976. Soil Mechanics Principles and Applications. Wiley, New York, 745 p.Google Scholar
- Ross, M.A., 1988. Vertical structure of estuarine fine sediment suspensions. Ph.D. thesis, University of Florida, Gainesville, 188 p. Wright, V.G., 1987. Laboratory and numerical study of mud and debris flow. Ph.D. thesis, University of California, Davis.Google Scholar
- Wright, V.G., 1987. Laboratory and numerical study of mud and debris flow. Ph.D. thesis, University of California, Davis.Google Scholar