Author : Henry Joseph Bokuniewicz
Publisher : Unknown
Page : 98 pages
File Size : 43,5 Mb
Release : 1977
Category : Estuaries
ISBN : UCR:31210025038140
Field Study of the Effects of Storms on the Stability and Fate of Dredged Material in Subaqueous Disposal Areas by Henry Joseph Bokuniewicz Pdf
Long Island Sound is a large estuary. Dredged sediment placed on the bottom of the Sound is subject to dispersion by the tidal stream, estuarine circulation, waves, and disturbances of the hydraulic flow field by storms. The tidal stream is the dominant source of energy for the resuspension and transport of sediments; waves do not contribute significantly to dispersion in water depths greater than 60 ft. Random fluctuations in the water velocity are detected at all depths. The data obtained show that to best contain silt-clay dredged material, the disposal site should be on a naturally accreting mud bottom, the disposal operation should emplace a large volume of material on the site expeditiously, and the deposit should be built to an optimum configuration. The capacity of the disposal site is limited by the maximum height of the disposal mound and the maximum slope of the pile sides which present a minimum disturbance of the natural hydraulic regime. The capacity of the New Haven site is estimated to be up to 1.7 x 106 yd3 of unarmored, silty, dredged material. Larger volumes may be contained if the surface of the deposit is armored with coarser material.
