Wind effect on chemical dispersion in San Andrew Bay

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Author
Chu, Peter C.
Pauly, Patrice
Ward, Mathew
Haeger, Steven D.
Date
2006Metadata
Show full item recordAbstract
A coupled hydrodynamic-chemical fate model is used to investigate mechanisms for
chemical dispersion in the St Andrew Bay system. It is found that the time for the pollutants
transporting outward the bay mainly relies on the winds and source location. If the
application of the stochastic model somehow handles the wind factor, the release location
must be shifted to other places in order to evaluate the relative weight of this factor. Because
the flux originating from Gulf of Mexico predominantly flows westward, a release point
located between St Andrew Bay and West Bay or even more inside West Bay is likely not to
deeply impact East Bay. The pollution will only reach the end of East Bay after 15 days if
the pollutant is spilled at point A, which only stands 8km away from the previous spot. As
this chemical is not volatile, it does not evaporate and its mass is roughly conserved into the
system until its natural decay acts. West Bay is much shallower than St. Andrew Bay, thus
the small concentration decrease close to the Gulf entrance involves a large pollutant mass
transfer into West Bay.
Description
The American Institute of Hydrology 25th Anniversary Meeting & International Conference Proceedings, 47-68
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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