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Numerical Simulation Of Contaminated Sediment Transport In The Upper Columbia Slough System, Binghong Wu
Numerical Simulation Of Contaminated Sediment Transport In The Upper Columbia Slough System, Binghong Wu
Dissertations and Theses
An integrated modeling system has been developed to simulate sediment and contaminated sediment transport in the Upper Columbia Slough System during the Flood of 1996. The modeling system consists of a hydrodynamic model, a sediment transport model, and a contaminant transport model. The hydrodynamic model predicts the Slough flow dynamics and sediment transporting power; the sediment transport model predicts flow-induced sediment transport; and the contaminant transport model predicts the migration of contaminated sediments in the Slough system.
The Upper Columbia Slough modeling system is characterized by its recognition of the complex interplay of Slough hydrology, hydrodynamics, sediment transport, contaminant transport. …
Simulating Migration Of Contaminated Sediments In The Lower Columbia Slough System, Min Chen
Simulating Migration Of Contaminated Sediments In The Lower Columbia Slough System, Min Chen
Dissertations and Theses
Recent screening-level risk assessment of Slough sediments initiated by the City of Portland identified five contaminated areas in the Slough as posing the greatest potentially significant risks to human health. These five areas were recommended for accelerated remedial action.
But one question remains, does the sediment contamination at these hot spots change over time in response to the changing Slough hydrodynamics? Specifically, will the contamination move or spread even before remedial action is taken? Will they still be there by the time when potential remedial action is taken? Will any new hot spots be created in response to nonuniform transient …