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Behavior of Currents and Suspended Sediments around a Silt Screen
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  • Journal title : Ocean and Polar Research
  • Volume 25, Issue spc3,  2003, pp.399-408
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2003.25.spc3.399
 Title & Authors
Behavior of Currents and Suspended Sediments around a Silt Screen
Jin, Jae-Youll; Chae, Jang-Won; Song, Won-Oh; Park, Jin-Soon; Kim, Sung-Eun; Jeong, Weon-Mu; Yum, Ki-Dai; Oh, Jae-Kyung;
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 Abstract
The behavior of Suspended Sediment Concentrations (SSC) around a silt screen in a microtidal coastal area was hydrodynamically measured. The current speed at the mid-layer about 30m downstream of the screen reduces to about half that at the same distance upstream. It was caused by the contraction of the vertical section due to the screen. Even during a relatively weak storm period the SSC increases to that of the value caused by dredging. Section-averaged SSC at the downstream of the screen is higher by about 60% than that at the upstream, suggesting that the silt screen plays an adverse effect rather than a constructive role in the reduction of SSC generated by dredging.
 Keywords
silt screen;microtidal;Optical Backscattering Sensor (OBS);acoustic velocimeter;mitigation;sediment plume;sediment flux;
 Language
English
 Cited by
1.
Laboratory investigation of hydraulic performance of silt screens, Journal of Hydrodynamics, Ser. B, 2010, 22, 5, 312  crossref(new windwow)
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