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Modelling solute transport in the Tweed Estuary, UK using ECoS.
A G Punt1, G E Millward, J R W Harris
1Enviros Consulting Limited, 61 The Shore, Leith Edinburgh, EH6 6RA, UK. adrian.punt@enviros.com
The Science of the Total Environment
|September 23, 2003
Summary
The ECoS model accurately predicted water levels and salinity in the Tweed River Estuary, validating its use for tidal hydrodynamic processes. Sufficient data is crucial for accurate modeling in complex estuaries.
Area of Science:
- Environmental science
- Hydrodynamics
- Estuarine modeling
Background:
- Tidal variations and solute transport are critical in estuaries.
- Accurate modeling requires understanding complex hydrodynamic processes.
Purpose of the Study:
- To predict tidal water elevation and solute advection-dispersion in the Tweed River Estuary.
- To validate the ECoS modeling package for estuarine applications.
Main Methods:
- Applied the ECoS modeling package with a 1D hydrodynamic scheme.
- Incorporated tidal elevation, River Tweed, and River Whiteadder fluvial inputs.
- Compared model results with field data from the Land-Ocean Interaction Study (LOIS).
Main Results:
- The model accurately reproduced tidal and river flow-driven changes in surface elevation.
- Over 90% of salinity variation was explained by the depth-averaged model.
- Demonstrated ECoS's capability to model tidal hydrodynamic processes.
Conclusions:
- ECoS is effective for modeling tidal hydrodynamics in stratified estuaries.
- Depth-averaged models can replicate depth-averaged data.
- Adequate data is essential for model setup and validation in dynamic estuaries.