Three-dimensional hydrodynamic-eutrophication model (HEM-3D): application to Kwang-Yang Bay, Korea

Park, Kyeong; Jung, Hoonshin; Kim, Hong-Sun; Ahn, Seung-Ho

doi:10.1016/j.marenvres.2004.10.003

Cited by 133 publications

(55 citation statements)

References 18 publications

(25 reference statements)

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“…The overload of these nutrients causes eutrophication and further results in the damage of ecosystem structures and functions (Smith et al, 1999;Viana et al, 2011). An initial assessment of the trophic state and the tracing of the sources of nutrient loadings into aquatic ecosystems are both important in the process of understanding the detrimental effects of nutrient input (Vander Zanden et al, 2005;Park et al, 2005;Chau and Muttil, 2007). The most commonly used methods in assessing the trophic state of lakes are the measurement of the total phosphorus, total nitrogen, Secchi depth, and Chlorophyll a from the water column (Carlson, 1977;Smith et al, 1999;Muttil and Chau, 2006;Weilhoefer, 2011).…”

Section: Introductionmentioning

confidence: 99%

Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs

Zhang

2012

Ecological Indicators

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Section: Introductionmentioning

confidence: 99%

Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs

Zhang

2012

Ecological Indicators

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“…EFDC uses orthogonal curvilinear or Cartesian horizontal coordinates and a stretched sigma vertical coordinate. EFDC uses an internal-external mode splitting to numerically solve the momentum equations and solves internal and external modes at the same time step, but it solves the external mode semi-implicitly with respect to barotropic pressure gradient term in depth-averaged momentum equations [28][29][30]. The Mellor and Yamada level 2.5 turbulence closure scheme is implemented in the model [31,32].…”

Section: Hydrodynamic Modelmentioning

confidence: 99%

Quantification of Water and Salt Exchanges in a Tidal Estuary

Devkota

Fang

2015

Water

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A calibrated three-dimensional hydrodynamic model was applied to study subtidal water and salt exchanges at various cross sections of the Perdido Bay and Wolf Bay system using the Eulerian decomposition method from 6 September 2008 to 13 July 2009. Salinity, velocity, and water levels at each cross section were extracted from the model output to compute flow rates and salt fluxes. Eulerian analysis concluded that salt fluxes (exchanges) at the Perdido Pass and Dolphin Pass cross sections were dominated by tidal oscillatory transport FT, whereas shear dispersive transport FE (shear dispersion due to vertical and lateral shear transport) was dominant at the Perdido Pass complex, the Wolf-Perdido canal, and the lower Perdido Bay cross sections. The flow rate QF and total salt transport rate FS showed distinct variation in response to complex interactions between discharges from upstream rivers and tidal boundaries. QF and FS ranged from −619 m

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“…SNL-EFDC is an upgraded version of EPA's environmental flow and transport code, Environmental Fluid Dynamics Code (EFDC) [9][10][11][12], coupled to both the US-ACE's water quality code, CE-QUAL-ICM [13,14], and the sediment dynamics code, SEDZLJ [15][16][17][18]. A new module considers energy removal from MHK devices and commensurate changes to turbulent kinetic energy and turbulent kinetic energy dissipation.…”

Section: Marine Hydrokinetic Codesmentioning

confidence: 99%

Simulating environmental changes due to marine hydrokinetic energy installations

James¹,

Seetho²,

Jones³

et al. 2010

Oceans 2010 MTS/Ieee Seattle

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Abstract-Marine hydrokinetic (MHK) projects will extract energy from ocean currents and tides, thereby altering water velocities and currents in the site's waterway. These hydrodynamics changes can potentially affect the ecosystem, both near the MHK installation and in surrounding (i.e., far field) regions. In both marine and freshwater environments, devices will remove energy (momentum) from the system, potentially altering water quality and sediment dynamics. In estuaries, tidal ranges and residence times could change (either increasing or decreasing depending on system flow properties and where the effects are being measured). Effects will be proportional to the number and size of structures installed, with large MHK projects having the greatest potential effects and requiring the most in-depth analyses. This work implements modification to an existing flow, sediment dynamics, and water-quality code (SNL-EFDC) to qualify, quantify, and visualize the influence of MHK-device momentum/energy extraction at a representative site. New algorithms simulate changes to system fluid dynamics due to removal of momentum and reflect commensurate changes in turbulent kinetic energy and its dissipation rate. A generic model is developed to demonstrate corresponding changes to erosion, sediment dynamics, and water quality. Also, bed-slope effects on sediment erosion and bedload velocity are incorporated to better understand scour potential.

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Three-dimensional hydrodynamic-eutrophication model (HEM-3D): application to Kwang-Yang Bay, Korea

Cited by 133 publications

References 18 publications

Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs

Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs

Quantification of Water and Salt Exchanges in a Tidal Estuary

Simulating environmental changes due to marine hydrokinetic energy installations

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