DEVELOPMENT OF A SEA-ICE THICKNESS GAGE. AN ATTEMPT TO USE SHEAR WAVES

An experimental apparatus for the measurement of the thickness of sea-ice by the use of a shear wave reflection technique was designed and constructed. The apparatus was tested extensively in the Arctic during the summer of 1972. A portion of the apparatus, the horizontal impact source, produced reliable and repeatable excitation of the ice. Unfortunately, the measurement of the thickness of sea ice by the use of a shear wave reflection technique was not as simple as was anticipated, primarily due to the difficulty of properly exciting the ice and to the mode conversion of the acoustic energy by external and internal features of the ice.

• Corporate Authors:

  University of Rhode Island, Kingston

  Department of Ocean Engineering, 227 Water Hall
  Kingston, RI  United States  02881

  United States Coast Guard

  Office of Research and Development, 400 7th Street, NW
  Washington, DC  United States  20590

  Coast Guard

  Office of Research and Development
  Washington, DC  United States 
• Authors:
  • Getman, J H
  • Moffett, M B
• Publication Date: 1973-5

Media Info

• Pagination: 218 p.

Subject/Index Terms

• TRT Terms: Acoustic measuring instruments; Acoustics; Equipment; Oceanography; Reflection; Reliability; Sea ice; Shear properties; Sound; Sound; Test procedures; Thickness
• Uncontrolled Terms: Experimental design
• Geographic Terms: Arctic Regions
• Old TRIS Terms: Acoustic measurement; Oceanographic equipment
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 00090375
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Final Rpt.
• Contract Numbers: DOT-CG-24136-A
• Files: NTIS
• Created Date: May 29 1975 12:00AM