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This paper describes an integrated hydrodynamic, wind-wave, and sediment dynamics modeling project for simulating episodic, storm-generated resuspension events in Lake Michigan. Each of these events resuspends up to several million metric tons of fine-grained sedimentary material, which is several times the estimated total annual input of fine-grained material to the lake from shoreline erosion, atmospheric deposition, and tributary runoff combined. The numerical models used in this study are the Princeton Ocean Model for hydrodynamics, the GLERL/Donelan parametric wind-wave model, and a simple two-dimensional sediment dynamics model with one particle size class. The results for the large resuspension event which...
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Hypoxia within lower Green Bay has been a problem for decades, and the problem may be worsening. Numerical modeling and field studies are underway to improve our understanding of circulation, thermal regime and anoxia in Green Bay. Model validation was successful because modeled currents are reasonably close to data collected at three monitoring stations. Model results showed that wind shear and circulation are stronger in winter than in summer. Water exchange between Lake Michigan and Green Bay is stronger during the summer, when wind shear is mostly axial. Mass exchange affects stratification, and possibly the development of anoxia. Results showed stable anticyclonic gyres both south and north of Chambers Island,...
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