Accession Number : ADA267189


Title :   Chesapeake Bay Sediment Flux Model


Descriptive Note : Final rept.,


Corporate Author : HYDROQUAL INC MAHWAH NJ


Personal Author(s) : Di Toro, Dominic M ; Fitzpatrick, James J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267189.pdf


Report Date : Jun 1993


Pagination or Media Count : 317


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.


Descriptors :   *MODELS , *SEDIMENTS , *CHESAPEAKE BAY , STATIONS , LAYERS , NITROGEN , OXYGEN , MIXING , PHOSPHATES , AMMONIUM NITRATE , EUTROPHICATION , NITRATES , SULFIDES , PHOSPHORUS , DEPOSITION , VARIABLES , WATER , TEMPERATURE


Subject Categories : Hydrology, Limnology and Potamology
      Numerical Mathematics


Distribution Statement : APPROVED FOR PUBLIC RELEASE