Height Variation along Sea Ice Pressure Ridges and the Probability of Finding 'Holes' for Vehicle Crossings
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
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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.
- Physical and Dynamic Oceanography
- Surface Effect Vehicles and Amphibious Vehicles