Accession Number:

ADA267189

Title:

Chesapeake Bay Sediment Flux Model

Descriptive Note:

Final rept.,

Corporate Author:

HYDROQUAL INC MAHWAH NJ

Report Date:

1993-06-01

Pagination or Media Count:

317.0

Abstract:

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.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE