CHARACTERIZATION OF SLUSH ICE IN THE GREAT LAKES

The purpose of the study was to identify characteristics of slush ice and to develop techniques for their measurement. Slush ice is a mixture of fresh water ice and water. It becomes an impediment to navigation when wind and water current transport the ice fragments into a restricted channel or harbor. The characteristics of slush ice identified and measured were draft, ice to water ratio (surface aspect only), and ice particle size distribution. Draft was measured using a sonar transducer set on the bottom of a channel and echoing off the underside of the slush ice. The water to ice ratio was obtained from photographs of slush ice taken from a helicopter. The ice particle size distribution was obtained by physically measuring ice particles in the field.

  • Corporate Authors:

    United States Coast Guard

    Research and Development Center, 1082 Shennecossett Road
    Groton, CT  United States  06340-6096
  • Authors:
    • Welsh, J P
    • Kingsbury, B T
  • Publication Date: 1974-11

Media Info

  • Pagination: 20 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00090319
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: CGR/DC-34-74 Final Rpt.
  • Files: NTIS, TRIS
  • Created Date: Apr 22 1975 12:00AM