Use of benthic sediments as indicators of marina flushing Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/dj52w739f

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  • This report presents the findings of a sediment analysis program formulated to determine the flushing potential of various shaped small boat marina basins. Chemical tests regarding volatile solids, Kjeldahl nitrogen, grease and oil, and sulfides were performed with the results compared to established sediment quality criteria. These results were used to estimate the relative state of pollution of several Oregon marinas. Existing criteria were used in normalizing laboratory test results into pollution indices. The marinas were characterized via dimensionless numbers composed of several physical parameters indicative of the basin's geometry on which the flushing ability of estuarine and riverine enclosures might depend. From a general statistical examination of the benthic sediment quality data, models were developed representing sediment quality indices and flushing phenomena. Comparing the relative differences in pollution indices between stations in one basin provided useful information concerning the confidence that can be regarded about assumptions made in the problem solving technique. Five dimensionless basin parameters were assigned limiting values that were felt optimum to obtain adequate flushing for marina basins. A nomogram for use in the design process for marina sitings was developed. Using this tool one can predict whether adequate flushing of enclosed basins would be ensured with the effect that existing water quality would be high. It is felt that this method of research, using sediments in describing a hydraulic system, has a potential for further use in examining marina flushing ability. Suggestions for future work are proposed.
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  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-10-28T19:55:35Z (GMT) No. of bitstreams: 1 NobleScottM1977.pdf: 856011 bytes, checksum: 3cec338e19abe01584b2f643c7e6a9b9 (MD5)
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