Model behavior and sensitivity in an application of the Cohesive Bed Component of the Community Sediment Transport Modeling System for the York River estuary, VA, USA
Fall, Kelsey A.
Harris, Courtney K.
Friedrichs, Carl T.
Rinehimer, J. Paul
Sherwood, Christopher R.
MetadataShow full item record
KeywordCohesive sediment; Critical stress; Sediment transport modeling; Erodibility; Settling velocity
The Community Sediment Transport Modeling System (CSTMS) cohesive bed sub-model that accounts for erosion, deposition, consolidation, and swelling was implemented in a three-dimensional domain to represent the York River estuary, Virginia. The objectives of this paper are to (1) describe the application of the three-dimensional hydrodynamic York Cohesive Bed Model, (2) compare calculations to observations, and (3) investigate sensitivities of the cohesive bed sub-model to user-defined parameters. Model results for summer 2007 showed good agreement with tidal-phase averaged estimates of sediment concentration, bed stress, and current velocity derived from Acoustic Doppler Velocimeter (ADV) field measurements. An important step in implementing the cohesive bed model was specification of both the initial and equilibrium critical shear stress profiles, in addition to choosing other parameters like the consolidation and swelling timescales. This model promises to be a useful tool for investigating the fundamental controls on bed erodibility and settling velocity in the York River, a classical muddy estuary, provided that appropriate data exists to inform the choice of model parameters.
© The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Marine Science and Engineering 2 (2014): 413-436, doi:10.3390/jmse2020413.
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Flood dispersal and deposition by near-bed gravitational sediment flows and oceanographic transport : a numerical modeling study of the Eel River shelf, northern California Harris, Courtney K.; Traykovski, Peter A.; Geyer, W. Rockwell (American Geophysical Union, 2005-09-30)A large flood of the Eel River, northern California, created a thick sediment deposit between water depths of 50 and 70 m in January 1997. The freshwater plume, however, confined sediment delivery to water depths shallower ...
Warner, John C.; Armstrong, Brandy; He, Ruoying; Zambon, Joseph B. (Elsevier B.V., 2010-07-29)Understanding the processes responsible for coastal change is important for managing our coastal resources, both natural and economic. The current scientific understanding of coastal sediment transport and geology suggests ...
Effect of roughness formulation on the performance of a coupled wave, hydrodynamic, and sediment transport model Ganju, Neil K.; Sherwood, Christopher R. (Elsevier B.V., 2010-03-27)A variety of algorithms are available for parameterizing the hydrodynamic bottom roughness associated with grain size, saltation, bedforms, and wave–current interaction in coastal ocean models. These parameterizations give ...