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Full-Text Articles in Environmental Sciences

Spring-Neap Variation In Fecal Pellet Properties Within Surficial Sediment Of The York River Stuary, Virginia, E. A. Wei, L. M. Kraatz, Carl T. Friedrichs Feb 2012

Spring-Neap Variation In Fecal Pellet Properties Within Surficial Sediment Of The York River Stuary, Virginia, E. A. Wei, L. M. Kraatz, Carl T. Friedrichs

Presentations

Fecal pellet abundance was measured within the upper seabed of the York River Estuary as part of a larger study investigating relationships between fine sediment aggregates and bed erodibility. Sedimentalogical surveys were conducted twice a month during the spring and summer of 2011 to coincide with spring or neap tidal cycles. Particle size distributions were determined by sieving the sediment using three methods: 1) typical grain size analysis, 2) gentle agitation with seawater, 3) gentle agitation with deionized water. Each method used four sieves (150, 90, 63 and 45 microns) to constrain the size abundance of the particles. The study …


Intercomparison Of 3-D Models For Estuarine Hydrodynamics And Hypoxia Within The Us Ioos Super-Regional Coastal Modeling Testbed, Carl T. Friedrichs, A. J. Bever, M.A.M. Friedrichs, The Estuarine Hypoxia Team Jan 2012

Intercomparison Of 3-D Models For Estuarine Hydrodynamics And Hypoxia Within The Us Ioos Super-Regional Coastal Modeling Testbed, Carl T. Friedrichs, A. J. Bever, M.A.M. Friedrichs, The Estuarine Hypoxia Team

Presentations

No abstract provided.


Simulation Of Coastal Inundation Instigated By Storm Surge And River Discharge In The Chesapeake Bay Using Sub-Grid Modeling Coupled With Lidar Data, J. D. Loftis, H. V. Wang Jan 2012

Simulation Of Coastal Inundation Instigated By Storm Surge And River Discharge In The Chesapeake Bay Using Sub-Grid Modeling Coupled With Lidar Data, J. D. Loftis, H. V. Wang

Presentations

Sub-grid modeling is a novel method by which water level elevations on the sub-grid level can be obtained through the combination of water levels and velocities efficiently calculated at the coarse computational grid, the discretized bathymetric depths, and local friction parameters without resorting to solve the full set of equations. Sub-grid technology essentially allows velocity to be determined rationally and efficiently at the sub-grid level. This salient feature enables coastal flooding to be addressed in a single cross-scale model from the ocean to the upstream river channel without overly refining the grid resolution. To this end, high-resolution DEMs will be …