Analytical characterization of selective benthic flux components in estuarine and coastal waters




Benthic flux is the rate of flow across the bed of a water body, per unit area of bed. It is forced by component mechanisms, which interact. For example, pressure gradients across the bed, forced by tide, surface gravity waves, density gradients, bed–current interaction, turbulence, and terrestrial hydraulic gradients, drive an advective benthic flux of water and constituents between estuarine and coastal waters, and surficial aquifers. Other mechanisms also force benthic flux, such as chemical gradients, bioturbation, and dispersion. A suite of component mechanisms force a total benthic flux at any given location, where each member of the suite contributes a component benthic flux. Currently, the types and characteristics of component interactions are not fully understood. For example, components may interact linearly or nonlinearly, and the interaction may be constructive or destructive. Benthic flux is a surface water–groundwater interaction process. Its discharge component to a marine water body is referred to, in some literature, as submarine groundwater discharge. Benthic flux is important in characterizing water and constituent budgets of estuarine and coastal systems. Analytical models to characterize selective benthic flux components are reviewed. Specifically, these mechanisms are for the component associated with the groundwater tidal prism, and forced by surface gravity wave setup, surface gravity waves on a plane bed, and the terrestrial hydraulic gradient. Analytical models are applied to the Indian River Lagoon, Florida; Great South Bay, New York; and the South Atlantic Bight in South Carolina and portions of North Carolina.

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Publication type Book chapter
Publication Subtype Book Chapter
Title Analytical characterization of selective benthic flux components in estuarine and coastal waters
ISBN 9780080878850
DOI 10.1016/B978-0-12-374711-2.00917-7
Volume 9
Year Published 2011
Language English
Publisher Elsevier
Contributing office(s) Florida Water Science Center
Description 27 p.
Larger Work Type Book
Larger Work Subtype Other Government Series
Larger Work Title Treatise on Estuarine and Coastal Science
First page 397
Last page 423
Country United States
State Florida;New York;North Carolina;South Carolina
Other Geospatial Great South Bay;Indian River Lagoon;South Atlantic Bight
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