Evaluation and Calibration of the Tetra Tech Dredged Material Disposal Models Based on Field Data.
Final rept. Jul 76-Apr 78,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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Prediction of the short-term physical fate of dredged material discharged into an aquatic environment based on general or specific site data and observations is extremely difficult because of the variability in the factors that influence the fate of the material. As a result, mathematical models were developed by Tetra Tech, Inc., for predicting the short-term physical fate of material disposed in an estuarine environment. Two models were developed, one for an instantaneous disposal operation and one for a continuous discharge disposal. Since the latter part of 1976, the Hydraulics Laboratory of the U.S. Army Engineer Waterways Experiment Station WES has been involved in an evaluation and calibration of these models. Model evaluation has centered around an analysis of the conceptualization of the physical processes and the corresponding theoretical description of those processes. In this phase, computer programming errors have been corrected and several modifications have been made to the models in order to more realistically represent the disposal processes. Model calibration has centered around determining the most realistic way to apply the models to a particular disposal operation and a subsequent variation of model coefficients to match computed results with data collected during Dredged Material Research Program DMRP sponsored field studies by Yale University DMRP Work Unit No. 1B09.
- Civil Engineering