SHOALING RATE PREDICTION USING A SEDIMENTATION TANK

A sedimentation tank was placed on a tidal flat near Anchorage, Alaska, as an in situ instrument to obtain the shoaling rate as would be expected in an enclosed harbor if one were constructed there. A foreknowledge of the shoaling rate is necessary to predict future harbor maintenance expenses. Depositional conditions within the tank were evaluated for similarity to those in an existing harbor at Dillingham, Alaska. In most cases conditions were similar. A significant difference was the tank does not account for the effects of a long navigation channel. The tank appears to have application in enclosed-type harbor situations where suspended sediment enters or is released from the harbor when the water surface rises or falls, as under the action of a tide or changing river stage; where currents within the habor are low; and where sedimentation can be expected to be uniform throughout the harbor. (Author)

• Supplemental Notes:
  • Proceedings of the Specialty Conference on Civil Engineering in the Oceans/III Held at Newark, Del., 9-12 Jun 75.
• Corporate Authors:

  Army Coastal Engineering Research Center

  Vicksburg, MS  United States 
• Authors:
  • Everts, C H
• Publication Date: 1975-6

Media Info

• Pagination: 20 p.

Subject/Index Terms

• TRT Terms: Analysis; Costs; Deposition; Dredging; Forecasting; Harbors; Maintenance; Ocean currents; Rates; Sedimentation; Sediments; Simulation; Tanks (Containers); Tides
• Uncontrolled Terms: Cost analysis; Shoaling
• Geographic Terms: Alaska
• Subject Areas: Finance; Hydraulics and Hydrology; Maintenance and Preservation; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00146268
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CERC-Reprint-76-1
• Files: TRIS
• Created Date: Jan 16 1977 12:00AM