Accession Number : ADA280760
Title : Three-Dimensional Eutrophication Model of Chesapeake Bay. Volume 1: Main Report.
Descriptive Note : Final rept.
Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
Personal Author(s) : Cerco, Carl F ; Cole, Thomas M
Report Date : May 1994
Pagination or Media Count : 661
Abstract : A three-dimensional, time-variable, eutrophication model, CE-QUAL- ICM, was applied to Chesapeake Bay. The model incorporated 22 state variables that included physical properties, multiple forms of algae, carbon, nitrogen, phosphorus, and silica, and dissolved oxygen. The model was part of a larger package that included a three-dimensional hydrodynamic model and a benthic sediment diagenesis model. The model was initially applied to a 3-year period, 1984-1986. The model successfully simulated water-column and sediment processes that affected water quality. Phenomena simulated include formation of the spring algal bloom subsequent to the annual peak in nutrient runoff, onset and breakup of summer anoxia, and coupling of organic particle deposition with sediment- water nutrient and oxygen fluxes. The model was next applied in a 30-year simulation of water quality, 1959-1988. The model indicated longterm trends in water quality and affirmed the role of stratification in determining anoxia. Final application of the model was in a series of nutrient load-reduction sensitivity analyses. The study demonstrated that complex eutrophication problems can be addressed with coupled three-dimensional hydrodynamic and water quality models. Chesapeake bay, Eutrophication, Phosphorus, Dissolved oxygen, Models, Sediments, Estuaries, Nitrogen.
Descriptors : *RIVERS , *WATER QUALITY , *CHESAPEAKE BAY , *EUTROPHICATION , SIMULATION , LOAD DISTRIBUTION , MODELS , PARAMETERS , PHYSICAL PROPERTIES , CARBON , VOLUMETRIC ANALYSIS , COUPLINGS , ALGAE , SUMMER , WORKSHOPS , RUNOFF , HYDRODYNAMICS , STRATIFICATION , CHANNEL FLOW , PHOSPHORUS , ESTUARIES , ANOXIA , BIOCHEMICAL OXYGEN DEMAND , CONSERVATION , NUTRIENTS , NITROGEN , OXYGEN , THREE DIMENSIONAL , DEPOSITION , SEDIMENT TRANSPORT
Subject Categories : Ecology
Water Pollution and Control
Distribution Statement : APPROVED FOR PUBLIC RELEASE