Wave-current interaction in Willapa Bay


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dc.contributor.author Olabarrieta, Maitane
dc.contributor.author Warner, John C.
dc.contributor.author Kumar, Nirnimesh
dc.date.accessioned 2012-01-23T20:42:37Z
dc.date.issued 2011-12-13
dc.identifier.citation Journal of Geophysical Research 116 (2011): C12014 en_US
dc.identifier.uri http://hdl.handle.net/1912/4991
dc.description Author Posting. © American Geophysical Union, 2011. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 116 (2011): C12014, doi:10.1029/2011JC007387. en_US
dc.description.abstract This paper describes the importance of wave-current interaction in an inlet-estuary system. The three-dimensional, fully coupled, Coupled Ocean-Atmosphere-Wave-Sediment Transport (COAWST) modeling system was applied in Willapa Bay (Washington State) from 22 to 29 October 1998 that included a large storm event. To represent the interaction between waves and currents, the vortex-force method was used. Model results were compared with water elevations, currents, and wave measurements obtained by the U.S. Army Corp of Engineers. In general, a good agreement between field data and computed results was achieved, although some discrepancies were also observed in regard to wave peak directions in the most upstream station. Several numerical experiments that considered different forcing terms were run in order to identify the effects of each wind, tide, and wave-current interaction process. Comparison of the horizontal momentum balances results identified that wave-breaking-induced acceleration is one of the leading terms in the inlet area. The enhancement of the apparent bed roughness caused by waves also affected the values and distribution of the bottom shear stress. The pressure gradient showed significant changes with respect to the pure tidal case. During storm conditions the momentum balance in the inlet shares the characteristics of tidal-dominated and wave-dominated surf zone environments. The changes in the momentum balance caused by waves were manifested both in water level and current variations. The most relevant effect on hydrodynamics was a wave-induced setup in the inner part of the estuary. en_US
dc.description.sponsorship Primary funding for this study was furnished by the U.S. Geological Survey, Coastal and Marine Geology Program, under the Carolinas Coastal Change Processes Project. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.relation.uri http://dx.doi.org/10.1029/2011JC007387
dc.subject COAWST model en_US
dc.subject Willapa en_US
dc.subject Inlet en_US
dc.subject Momentum balance en_US
dc.subject Vortex force en_US
dc.subject Wave-current interaction en_US
dc.title Wave-current interaction in Willapa Bay en_US
dc.type Article en_US
dc.description.embargo 2012-06-13
dc.identifier.doi 10.1029/2011JC007387

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