The role of bottom current and estuarine geomorphology on the sedimentation processes and productivity of Wreck Shoal, an oyster reef of the James River, Virginia

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Indicates considerable spatial variation in the strength of the bottom current regime. The magnitude of the bottom current is inversely correlated to mean water depth. Temporal variations in the bottom current are accounted for by a net downstream current and a strong periodic tidal component. The "hard-rock' oyster reefs experience relatively strong bottom currents over a hydraulically rougher bottom, while the "mud-shell' oyster reefs experience relatively weak bottom currents over a hydraulically smoother bottom. -from Author

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Estuarine circulation