Consolidation and erosion of deposited cohesive sediments in Northern Chesapeake Bay, USA
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Deposits of dredged cohesive sediments were monitored for changes in volume, bulk characteristics, and susceptibility to resuspension and erosion at disposal sites in Chesapeake Bay. There is a 23–48% volume reduction during the first six months, with correspondingly greater changes over longer time periods. A bulk density increase from 1.15 to 1.3 g/cm3 due to dewatering and compaction accounts for the majority of the volume change. Tidal current induced resuspension is a minor process. The observed suspended sediment load can be accounted for by erosion of only a fraction of a millimeter of sediment on each tidal cycle.
KeywordsDisposal Site Turbidity Maximum Cohesive Sediment Disposal Area Bottom Shear Stress
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- Department of the Army, 1984. Shore Protection Manual. U.S. Army Engineers, Waterways Experiment Station, Coastal Engineering Research Center.Google Scholar
- Nichols MM, 1984. Effects of fine sediment resuspension in estuaries. In: Mehta AH (Ed.), Estuarine cohesive sediment dynamics. Proceedings of a Workshop on Cohesive Sediment Dynamics, Tampa, Florida. Springer-Verlag, New York. 5–42.Google Scholar
- Panageotou WP and Halka JP, 1990. Monitoring of sediments dredged from the approach channel to the Chesapeake and Delaware Canal. Maryland Geological Survey Open File Report 10, 70 pp.Google Scholar