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.
United States Coast GuardResearch and Development Center, 1082 Shennecossett Road
Groton, CT United States 06340-6096
- Welsh, J P
- Kingsbury, B T
- Publication Date: 1974-11
- Pagination: 20 p.
- TRT Terms: Classification; Fresh water; Grain size (Geology); Ice; Loads; Measurement; Mixtures; Obstructions (Navigation); Operations; Physical properties; Ratios; Slush; Texture
- Uncontrolled Terms: Ice properties
- Geographic Terms: Great Lakes
- Old TRIS Terms: Obstructions to navigation
- Subject Areas: Administration and Management; Marine Transportation;
- 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