Mechanisms of exchange flow in an estuary with a narrow, deep channel and wide, shallow shoals

W. Rockwell Geyer, David Ralston & Jia-Lin Chen
Delaware Bay is a large estuary with a deep, relatively narrow channel and wide, shallow banks, providing a clear example of a “channel-shoal” estuary. This numerical modeling study addresses the exchange flow in this channel-shoal estuary, specifically to examine how the lateral geometry affects the strength and mechanisms of exchange flow. We find that the exchange flow is exclusively confined to the channel region during spring tides, when stratification is weak, and it broadens laterally...
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