Effects of the flood of 1993 on the chemical characteristics of bed sediments in the Upper Mississippi River

Concentrations of pollutants stored in the surficial bed sediments in the navigation pools of the Upper Mississippi River showed a general decrease after the record flood of 1993. Percent clay and total organic carbon in the surficial sediments decreased as a result of an increase in the proportion...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2000, Vol.117 (1-4), p.329-351
Main Authors: MOODY, J. A, SULLIVAN, J. F, TAYLOR, H. E
Format: Article
Language:English
Subjects:
Applied sciences
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Environmental monitoring
Exact sciences and technology
Freshwater
Organic carbon
Pollutants
Pollution
Pollution control
Pollution sources. Measurement results
Pollution, environment geology
Rivers
Sediment pollution
Sediments
Soil and sediments pollution
USA, Mississippi R
Water pollution
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Summary:Concentrations of pollutants stored in the surficial bed sediments in the navigation pools of the Upper Mississippi River showed a general decrease after the record flood of 1993. Percent clay and total organic carbon in the surficial sediments decreased as a result of an increase in the proportion of coarser sediment. Decreases in pollutant concentration may have been a result of the dilution by coarser and relatively less polluted sediment that was mobilized and transported into the Upper Mississippi River from its tributaries or from mainstem locations upstream but outside of the sampling area.
ISSN:0049-6979
1573-2932
DOI:10.1023/A:1005143103441