Physical response of a back-barrier estuary to a post-tropical cyclone Beudin, Alexis Ganju, Neil K. Defne, Zafer Aretxabaleta, Alfredo L. 2017-10-03T18:31:59Z 2017-10-03T18:31:59Z 2017-07-27
dc.description © The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Geophysical Research: Oceans 122 (2017): 5888–5904, doi:10.1002/2016JC012344. en_US
dc.description.abstract This paper presents a modeling investigation of the hydrodynamic and sediment transport response of Chincoteague Bay (VA/MD, USA) to Hurricane Sandy using the Coupled Ocean-Atmosphere-Wave-Sediment-Transport (COAWST) modeling system. Several simulation scenarios with different combinations of remote and local forces were conducted to identify the dominant physical processes. While 80% of the water level increase in the bay was due to coastal sea level at the peak of the storm, a rich spatial and temporal variability in water surface slope was induced by local winds and waves. Local wind increased vertical mixing, horizontal exchanges, and flushing through the inlets. Remote waves (swell) enhanced southward flow through wave setup gradients between the inlets, and increased locally generated wave heights. Locally generated waves had a negligible effect on water level but reduced the residual flow up to 70% due to enhanced apparent roughness and breaking-induced forces. Locally generated waves dominated bed shear stress and sediment resuspension in the bay. Sediment transport patterns mirrored the interior coastline shape and generated deposition on inundated areas. The bay served as a source of fine sediment to the inner shelf, and the ocean-facing barrier island accumulated sand from landward-directed overwash. Despite the intensity of the storm forcing, the bathymetric changes in the bay were on the order of centimeters. This work demonstrates the spectrum of responses to storm forcing, and highlights the importance of local and remote processes on back-barrier estuarine function. en_US
dc.description.sponsorship Department of Interior Hurricane Sandy Recovery program en_US
dc.identifier.citation Journal of Geophysical Research: Oceans 122 (2017): 5888–5904 en_US
dc.identifier.doi 10.1002/2016JC012344
dc.language.iso en_US en_US
dc.publisher John Wiley & Sons en_US
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri *
dc.subject Chincoteague Bay en_US
dc.subject Hurricane Sandy en_US
dc.subject Numerical modeling en_US
dc.subject Back-barrier bay en_US
dc.subject Wave setup en_US
dc.subject Sediment transport en_US
dc.title Physical response of a back-barrier estuary to a post-tropical cyclone en_US
dc.type Article en_US
dspace.entity.type Publication
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