An Influence of Salinity on Resuspension of Cohesive Sediment

Kim, K.H.; Yoon, H.S., Lee, I.C. and Hibino, T., 2016. An influence of Salinity on Resuspension of Cohesive Sediment. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research,...

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Published inJournal of coastal research Vol. 75; no. sp1; pp. 68 - 72
Main Authors Kim, Kyunghoi, Yoon, Han-sam, Lee, In-Cheol, Hibino, Tadashi
Format Journal Article
LanguageEnglish
Published Fort Lauderdale Coastal Education and Research Foundation 01.03.2016
Coastal Education and Research Foundation, Inc
Allen Press Inc
Subjects
Bentonite
blackish river
Cohesion
cohesive sedimenet
Cohesive sediments
ESTUARIES
Experiments
Fish
Floods
Flow channels
Fresh water
Freshwater
Liquid limits
Liquids
Moisture content
Resuspension
Rivers
Saline water
Salinity
Saltwater
Sediments
Settling velocity
Shear stress
Turbidity
Velocity
Water content
Water quality
Water temperature
Japan
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Summary:Kim, K.H.; Yoon, H.S., Lee, I.C. and Hibino, T., 2016. An influence of Salinity on Resuspension of Cohesive Sediment. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 68–72. Coconut Creek (Florida), ISSN 0749-0208. Field observations were carried out at Tenma River which passes through Hiroshima City to investigate turbidity variations in various salinity conditions. And resuspension experiments with cohesive sediments were conducted using an unidirectional flow channel with varying salinity. Changes in the sediment strength due to the salinity variation were evaluated by using liquid limit test. It was found that turbidity varied in reverse proportion to the salinity in the Tenma River. Also, increases in salinity reduced the resuspension flux and enhanced the settling velocity of cohesive sediment by enhancing the cohesion between the particles. From the results obtained above, we concluded that salinity is an important factor in the transport of cohesive sediment in addition to shear stress and water content in estuaries and blackish rivers.
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ISSN:0749-0208
1551-5036
DOI:10.2112/SI75-014.1