HEIGHT VARIATION ALONG SEA ICE PRESSURE RIDGES AND THE PROBABILITY OF FINDING 'HOLES' FOR VEHICLE CROSSINGS

Height variations along sea ice pressure ridges were studied to determine whether low spots in the ridges persisted over long enough distances for a wide vehicle such as the surface effect vehicle to pass through them. Heights along eight pressure ridges varying in length from 0.9 km to 2.2 km were measured at 5-m intervals using aerial photographic data obtained over the Beaufort Sea. The probabilities of finding holes at the mean heights of the ridges and 0.67 m above and below the mean heights were calculated as a function of the hole widths using an autocorrelation function obtained from the height data. The curves obtained were in good agreement with passage probabilities calculated directly from the data. (Modified author abstract)

• Corporate Authors:

  U.S. Army Cold Regions Research and Engineering Laboratory

  72 Lyme Road
  Hanover, NH  United States  03755-1290
• Authors:
  • Hibler III, W D
  • Ackley, S F
• Publication Date: 1973-12

Media Info

• Pagination: 15 p.

Subject/Index Terms

• TRT Terms: Cold weather; Ice; Ice formations; Sea ice
• Geographic Terms: Arctic Regions
• Old TRIS Terms: Arctic transportation; Ice profiles; Ice ridge orientation; Ice ridges
• Subject Areas: Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00054099
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CRREL-SR-197 Special Rp
• Files: TRIS
• Created Date: May 7 1974 12:00AM