DESKTOP METHOD FOR ESTIMATING VESSEL-INDUCED SEDIMENT SUSPENSION

Erosion of riverbanks is a matter of concern for engineering and environmental reasons. Among several dominant mechanisms of riverbank erosion, navigation effects caused by the passage of vessels are quite important. Field data indicates that large vessels generate large drawdown and small wave heights, whereas small vessels generate small drawdown and large wave heights. Passage of both types of vessels may result in bank erosion and a substantial increase in suspended-sediment concentration. The effect of vessel-induced waves on sediment erosion is evaluated in this paper. PC-based FORTRAN programs were developed for: 1) computation of time series of vessel-induced waves; 2) erosion and deposition of cohesive sediment under waves and nearshore currents; and 3) computation of noncohesive suspended-sediment concentration caused by river current alone. An application to the Upper Mississippi River Navigation Study is provided.

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  • English

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  • Accession Number: 00813440
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 2 2001 12:00AM