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Tidally averaged circulation in Puget Sound sub-basins: Comparison of historical data, analytical model, and numerical model

Khangaonkar, Tarang ; Yang, Zhaoqing ; Kim, Taeyun ; Roberts, Mindy

Estuarine, Coastal and Shelf Science, 2011-07, Vol.93 (4), p.305-319 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
Tidally averaged circulation in Puget Sound sub-basins: Comparison of historical data, analytical model, and numerical model
Autor: Khangaonkar, Tarang ; Yang, Zhaoqing ; Kim, Taeyun ; Roberts, Mindy
Assuntos: 3-D hydrodynamic model ; analytical solution ; Animal and plant ecology ; Animal, plant and microbial ecology ; Basins ; BATHYMETRY ; Biological and medical sciences ; Brackish ; Brackish water ecosystems ; Circulation ; ESTUARIES ; fjords ; Fundamental and applied biological sciences. Psychology ; FVCOM ; General aspects. Techniques ; GEOSCIENCES ; Inflow ; Marine ; Mathematical analysis ; Mathematical models ; Methods and techniques (sampling, tagging, trapping, modelling...) ; modeling ; modeling, fjords, hydrodynamics, circulation, Puget Sound ; Parametrization ; partially mixed estuaries ; PUGET SOUND ; RESOLUTION ; SALINITY ; SALINITY GRADIENTS ; SENSITIVITY ; Sound ; Synecology ; TRANSPORT ; unstructured grid ; VELOCITY
É parte de: Estuarine, Coastal and Shelf Science, 2011-07, Vol.93 (4), p.305-319
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
PNNL-SA-80338
USDOE
AC05-76RL01830
Descrição: Through extensive field data collection and analysis efforts conducted since the 1950s, researchers have established an understanding of the characteristic features of circulation in Puget Sound. The pattern ranges from the classic fjordal behavior in some basins, with shallow brackish outflow and compensating inflow immediately below, to the typical two-layer flow observed in many partially mixed estuaries with saline inflow at depth. An attempt at reproducing this behavior by fitting an analytical formulation to past data is presented, followed by the application of a three-dimensional circulation and transport numerical model. The analytical treatment helped identify key physical processes and parameters, but quickly reconfirmed that response is complex and would require site-specific parameterization to include effects of sills and interconnected basins. The numerical model of Puget Sound, developed using unstructured-grid finite volume method, allowed resolution of the sub-basin geometric features, including presence of major islands, and site-specific strong advective vertical mixing created by bathymetry and multiple sills. The model was calibrated using available recent short-term oceanographic time series data sets from different parts of the Puget Sound basin. The results are compared against 1) recent velocity and salinity data collected in Puget Sound from 2006 and 2) a composite data set from previously analyzed historical records, mostly from the 1970s. The results highlight the ability of the model to reproduce velocity and salinity profile characteristics, their variations among Puget Sound sub-basins, and tidally averaged circulation. Sensitivity of residual circulation to variations in freshwater inflow and resulting salinity gradient in fjordal sub-basins of Puget Sound is examined.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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Tidally averaged circulation in Puget Sound sub-basins: Comparison of historical data, analytical model, and numerical model

Khangaonkar, Tarang ; Yang, Zhaoqing ; Kim, Taeyun ; Roberts, Mindy

Kidlington: Elsevier Ltd

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