Graduate Thesis Or Dissertation
 

Pollution and tidal flushing predictions for Oregon's estuaries

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/db78tf26w

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  • The overriding goal of this study was to provide first order estimates of dilution and tidal flushing of waste discharges released hypothetically into various Oregon estuaries during critical low flows and tides. Causal relationships between discharged wastes and subsequent estuarine response were studied. Various approaches to determine the assimilative capacity of tidal estuaries were described and applied to ten of Oregon's estuaries for which limited hydraulic flow information was available. This study mainly focused on the well-mixed condition common to most of Oregon's estuaries. The characteristics of the estuary used in the calculations were: tidal volumes, river flow, topography, and salinity information. Comparison of results from the modified tidal prism method and fraction of freshwater method for determining tidal flushing was made. Stommel's and Thomann's one-dimensional model was used to predict the spatial pollutant distribution from a waste outfall discharging into an estuary. Flushing rates in an overmixed estuary were determined using Gibson's method as well as flushing times calculation for a marina-like small basin.
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  • File scanned at 300 ppi (Monochrome, 256 Grayscale) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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