HR: 14:15h
AN: OS23G-02    [Abstracts]
TI: Simulations of Mixing and Transport of Dissolved Waste Discharged From a Submerged Aquaculture pen
AU: * Venayagamoorthy, S K
EM: vskaran@stanford.edu
AF: Stanford University, Stanford, California, CA 94305, United States
AU: Fringer, O B
EM: fringer@stanford.edu
AF: Stanford University, Stanford, California, CA 94305, United States
AU: Koseff, J R
EM: koseff@stanford.edu
AF: Stanford University, Stanford, California, CA 94305, United States
AU: Naylor, R L
EM: roz@stanford.edu
AF: Stanford University, Stanford, California, CA 94305, United States
AB: The present study focuses on understanding the transport and fate of dissolved wastes from an aquaculture pen in near-coastal environments using the hydrodynamic code SUNTANS, which uses unstructured grids to compute flows at very high resolution. Simulations of the pollutant concentration field (in time and space) as a function of the local environment (stratification, bathymetry, wind), flow conditions (tides, currents), and the location of the pen were performed. The fish-pen causes partial blockage of the water flow, causing deceleration of the approaching flow and the formation of a downstream wake. Results of both the near-field (area within 10 to 20 pen diameters of fish-pen site) as well as the far-field behavior of the pollutant field will be presented. The results provide an understanding of the impact of aquaculture fish-pens on coastal water quality.
DE: 0496 Water quality
DE: 1871 Surface water quality
DE: 4217 Coastal processes
DE: 4813 Ecological prediction
SC: Ocean Sciences [OS]
MN: 2007 Joint Assembly