Chesapeake Bay sediment flux model. Final report
Formulation and application of a predictive diagenetic sediment model are described in this report. The model considers two benthic sediment layers: a thin aerobic layer in contact with the water column and a thicker anaerobic layer. Processes represented include diagenesis, diffusion, particle mixing, and burial. Deposition of organic matter, water column concentrations, and temperature are treated as independent variables that influence sediment-water fluxes. Sediment oxygen demand and sediment-water fluxes of sulfide, ammonium, nitrate, phosphate, and silica are predicted. The model was calibrated using sediment-water flux observations collected in Chesapeake Bay 1985-1988. When independent variables were specified based on observations, the model correctly represented the time series of sediment-water fluxes observed at eight stations in the Bay and tributaries.... Chesapeake Bay, Models, Sediments, Dissolved oxygen, Nitrogen Eutrophication, Phosphorus.
- Research Organization:
- Hydroqual, Inc., Mahwah, NJ (United States)
- OSTI ID:
- 6012708
- Report Number(s):
- AD-A-267189/9/XAB; CNN: DACW39-88-C-D0035
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540350* -- Environment
Aquatic-- Site Resource & Use Studies-- (1990-)
AEROBIC CONDITIONS
ANAEROBIC CONDITIONS
AQUATIC ORGANISMS
ATLANTIC OCEAN
BAYS
BENTHOS
BIOCHEMICAL OXYGEN DEMAND
CHALCOGENIDES
CHESAPEAKE BAY
COASTAL WATERS
DEPOSITION
DIAGENESIS
DIFFUSION
DISSOLVED GASES
ECOLOGICAL CONCENTRATION
ELEMENTS
EUTROPHICATION
FLUIDS
GASES
LAYERS
MATHEMATICAL MODELS
MATTER
MINERALS
MIXING
NITRATES
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
ORGANIC MATTER
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS
PHOSPHORUS COMPOUNDS
POLLUTION
SEAS
SEDIMENTS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SOLUTES
SULFIDES
SULFUR COMPOUNDS
SURFACE WATERS
TEMPERATURE DEPENDENCE
WATER POLLUTION