Tidal flushing and eddy shedding in Mount Hope Bay and Narragansett Bay: An application of FVCOM

Zhao, Liuzhi; Chen, Changsheng; Cowles, Geoffrey W.

doi:10.1029/2005jc003135

Cited by 36 publications

(14 citation statements)

References 20 publications

(38 reference statements)

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“…The model employs the Mellor Yamada level 2.5 turbulence closure scheme (Mellor and Yamada 1982;Galperin et al 1988;Kantha and Clayson 1994;Mellor and Blumberg 2004) for vertical mixing and the Smagorinsky scheme for horizontal mixing. It has been successfully applied to simulate hydrodynamics and transport processes in many estuaries and coastal waters (Zheng et al 2003;Chen and Rawson 2005;Zhao et al 2006;Weisberg and Zheng 2006;Aoki and Isobe 2007;Chen et al 2008). In Puget Sound, PNNL has applied the model with great success to a number of water bodies, including Skagit Bay, the Snohomish River, Port Susan Bay, the Nisqually Delta, and the entire Puget Sound (Yang and Khangaonkar 2008;Yang et al 2009aYang et al , b, 2010Khangaonkar and Yang 2010).…”

Section: The Hydrodynamic Modelmentioning

confidence: 99%

Development of a Hydrodynamic and Transport model of Bellingham Bay in Support of Nearshore Habitat Restoration

Wang

Yang²,

Khangaonkar³

2010

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Executive SummaryIn this study, a hydrodynamic model based on the unstructured-grid finite volume coastal ocean model (FVCOM) was developed for Bellingham Bay, Washington. The model simulates water surface elevation, velocity, temperature, and salinity in a three-dimensional domain that covers the entire Bellingham Bay and adjacent water bodies, including Lummi Bay, Samish Bay, Padilla Bay, and Rosario Strait. The model was developed using Pacific Northwest National Laboratory's high-resolution Puget Sound and Northwest Straits circulation and transport model. A sub-model grid for Bellingham Bay and adjacent coastal waters was extracted from the Puget Sound model and refined in Bellingham Bay using bathymetric light detection and ranging (LIDAR) and river channel cross-section data. The model uses tides, river inflows, and meteorological inputs to predict water surface elevations, currents, salinity, and temperature. A tidal open boundary condition was specified using standard National Oceanic and Atmospheric Administration (NOAA) predictions. Temperature and salinity open boundary conditions were specified based on observed data. Meteorological forcing (wind, solar radiation, and net surface heat flux) was obtained from NOAA real observations and National Center for Environmental Prediction North American Regional Analysis outputs. The model was run in parallel with 48 cores using a time step of 2.5 seconds. It took 18 hours of cpu time to complete 26 days of simulation. The model was calibrated with oceanographic field data for the period of 6/10/2009 to 6/25/2009. These data were collected specifically for the purpose of model development and calibration. They include time series of water-surface elevation, currents, temperature, and salinity as well as temperature and salinity profiles during instrument deployment and retrieval. Comparisons between model predictions and field observations show an overall reasonable agreement in both temporal and spatial scales. Comparisons of root mean square error values for surface water elevation, velocity, temperature, and salinity time series are 0.11 m, 0.10 m/s, 1.28 o C, and 1.91 ppt, respectively. The model was able to reproduce the salinity and temperature stratifications inside Bellingham Bay. Wetting and drying processes in tidal flats in Bellingham Bay, Samish Bay, and Padilla Bay were also successfully simulated.Both model results and observed data indicated that water surface elevations inside Bellingham Bay are highly correlated to tides. Circulation inside the bay is weak and complex and is affected by various forcing mechanisms, including tides, winds, freshwater inflows, and other local forcing factors. The Bellingham Bay model solution was successfully linked to the NOAA oil spill trajectory simulation model -General NOAA Operational Modeling Environment (GNOME).‖ Overall, the Bellingham Bay model has been calibrated reasonably well and can be used to provide detailed hydrodynamic information in the bay and adjacent water bodies. While there is room for f...

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Section: The Hydrodynamic Modelmentioning

confidence: 99%

Development of a Hydrodynamic and Transport model of Bellingham Bay in Support of Nearshore Habitat Restoration

Wang

Yang²,

Khangaonkar³

2010

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“…Surface forcing can be directly specified in FVCOM using outputs from an appropriate meteorological model. The model has been successfully applied to simulate hydrodynamics and transport processes in many estuaries, coastal water and open oceans (Zheng and Liu 2003;Chen and Rawson 2005;Zhao et al 2006;Weisberg and Zheng 2006;Beardsley 2006, Aoki andIsobe 2007;Chen et al 2008;Yang and Khangaonkar 2008;Yang et al 2009a, b).…”

Section: Development Of the Model Gridmentioning

confidence: 99%

Puget Sound Dissolved Oxygen Modeling Study: Development of an Intermediate-Scale Hydrodynamic Model

Yang¹,

Khangaonkar²,

Labiosa³

et al. 2010

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Executive SummaryPuget Sound is a large estuarine system bounded by 2,597 miles of complex shorelines and consists of several subbasins and many large estuaries with distinct properties. Pacific Ocean water enters Puget Sound and the Georgia Strait through the Strait of Juan de Fuca. Freshwater inflows to Puget Sound include 19 major rivers and multiple point and nonpoint sources including effluent discharges from industrial and municipal outfalls, agricultural runoff, and natural watershed runoff. Nutrient pollution is considered one of the largest threats to Puget Sound. There is considerable interest in understanding the effect of nutrient loads entering Puget Sound. The Washington State Department of Ecology contracted with Pacific Northwest National Laboratory to develop an intermediate-scale hydrodynamic and water quality model to study dissolved oxygen and nutrient dynamics in Puget Sound and to help define potential Puget Sound-wide nutrient management strategies and decisions. Specifically, the project is expected to help determine 1) if current and potential future nitrogen loadings from point and non-point sources are significantly impairing water quality at a large scale and 2) what level of nutrient reductions are necessary to reduce or control human impacts to dissolved oxygen levels in the sensitive areas.

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“…3). The formation of these eddies is mainly due to the current separation either at the tip of the coastlines or asymmetric tidal flushing in narrow channels or passages according to Zhao et al (2006). Based on different period, we separate these eddies into two types: eddy shedding from the tidal flushing, and steady eddies identified from the residual flow field.…”

Section: Resultsmentioning

confidence: 99%

The Impact of Nearshore Eddies on the Design of Marine Environmental Monitoring Sites

Wang¹,

Wu²,

Hong-liang³

et al. 2013

Proceedings of the 2013 International Conference on Remote Sensing,Environment and Transportation Engineering

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Abstract-Design of the in-situ observational sites depends on topography and hydrodynamic characteristics in the observational region, which is significantly important in marine environmental monitoring and evaluation. The tidal motion in Jiaozhou Bay and Aoshan Bay is simulated in this study using the unstructured grid, finite-volume coastal ocean model (FVCOM). With an accurate geometric representation of irregular coastlines and islands and sufficiently high horizontal resolution in narrow channels, FVCOM provides an accurate simulation of the tidal current in the bays and also resolves the strong tidal flushing processes in the narrow channels. There exist many small-scale eddies due to the interaction of tidal flushing and complex coastlines. Small-scale eddies formation will cause inhomogeneous distribution of the marine environmental element, then affects design of the in-situ observational sites. We proposed that design of the in-situ observational sites should consider nearshore eddies in order to conform to reality and enhance environmental protection.

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Tidal flushing and eddy shedding in Mount Hope Bay and Narragansett Bay: An application of FVCOM

Cited by 36 publications

References 20 publications

Development of a Hydrodynamic and Transport model of Bellingham Bay in Support of Nearshore Habitat Restoration

Development of a Hydrodynamic and Transport model of Bellingham Bay in Support of Nearshore Habitat Restoration

Puget Sound Dissolved Oxygen Modeling Study: Development of an Intermediate-Scale Hydrodynamic Model

The Impact of Nearshore Eddies on the Design of Marine Environmental Monitoring Sites

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