NDLI: Characterization and modeling of turbidity density plume induced into stratified reservoir by flood runoffs.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Chung, S. W. Lee, H. S.
Description	Country affiliation: South Korea Author Affiliation: Chung SW ( Department of Environmental Engineering, Chungbuk National University, Cheongju, South Korea. schung@chungbuk.ac.kr)
Abstract	In monsoon climate area, turbidity flows typically induced by flood runoffs cause numerous environmental impacts such as impairment of fish habitat and river attraction, and degradation of water supply efficiency. This study was aimed to characterize the physical dynamics of turbidity plume induced into a stratified reservoir using field monitoring and numerical simulations, and to assess the effect of different withdrawal scenarios on the control of downstream water quality. Three different turbidity models (RUN1, RUN2, RUN3) were developed based on a two-dimensional laterally averaged hydrodynamic and transport model, and validated against field data. RUN1 assumed constant settling velocity of suspended sediment, while RUN2 estimated the settling velocity as a function of particle size, density, and water temperature to consider vertical stratification. RUN3 included a lumped first-order turbidity attenuation rate taking into account the effects of particles aggregation and degradable organic particles. RUN3 showed best performance in replicating the observed variations of in-reservoir and release turbidity. Numerical experiments implemented to assess the effectiveness of different withdrawal depths showed that the alterations of withdrawal depth can modify the pathway and flow regimes of the turbidity plume, but its effect on the control of release water quality could be trivial.
File Format	HTM / HTML
ISSN	02731223
Issue Number	1
Volume Number	59
e-ISSN	19969732
Journal	Water Science & Technology
Language	English
Publisher	IWA Publishing
Publisher Date	2009-01-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Hydrology Environmental Monitoring Floods Models, Theoretical Water Pollutants Analysis Water Supply Computer Simulation Nephelometry And Turbidimetry Temperature Time Factors Water Movements Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology

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