In order to integrate disease and population processes, including reconstruction of the epizootic event of 1984 - 86 and the subsequent increased resistance in the oyster population, we developed and validated a 3-dimensional circulation model of the Delaware Bay that can be used to experimentally track water-borne particles such as oyster larvae and parasites.

The Model is based on the Regional Ocean Modeling system (ROMS).

It includes

• the Delaware River and Estuary and adjacent shelf to about the 200m isobath.
• variable horizontal resolutions
• 386 x 98 grid points
• 20 vertical levels
• bathymetry from NGDC Coastal Relief Model (NOAA)
• freshwater input from 6 rivers
• boundary forcing from a global tidal model
• atmospheric forcing from the North American Regional Reanalysis (NARR)

 

 

Datasets for 1984 and 1985 (NOAA/NOS/OCS/CSDL) were used to validate model output for tides, salinity and temperature.

Preliminary runs indicate

• good agreement with tidal phase and amplitude
• reproduction of the seasonal temperature cycle
• reproduction of the salinity amplitude, but still requires refinement

 

 

 

 

 

 

 

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