Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Browse subjects
  3. Earth and Environmental Sciences
  4. Environmental science
  5. Content listing

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

13294 results in Environmental science

Page 206 of 665

  • United States Air Force rescue Activities in Alaska

  • Journal:
    Polar Record / Volume 6 / Issue 41 / January 1951
    Published online by Cambridge University Press:
    27 October 2009, pp. 115-116
    • Article
      • You have access
    • PDF
    • Export citation

  • Canada's Eastern Arctic Patrol 1922–68

  • C.S. Mackinnon
  • Journal:
    Polar Record / Volume 27 / Issue 161 / April 1991
    Published online by Cambridge University Press:
    27 October 2009, pp. 93-101

  • Concerned to assert sovereignty over northern territories, Canada in 1922 began an annual patrol to the eastern Arctic to establish and maintain police posts. The experienced Captain Bernier and the Arctic made four trips; then from 1926 to 1931 the government chartered Beothic, a larger sealing ship. The patrol was led by a civil servant and transported doctors, scientists, court officials and representatives of the Royal Canadian Mounted Police. As part of depression economies in the 1930s, space was rented on the Hudson's Bay Company's Nascopie under Capt Smellie and many more Inuit were visited, but fur trading interests took precedence. Major McKeand, the patrol leader, had many roles and useful research continued, but Nascopie sank in July 1947. With postwar concern for a heightened government presence in the Arctic, and after some interim arrangements, the patrol was resumed in 1950 in CD. Howe. The new expedition was especially designed for an expanded medical team eager to test all Inuit for tuberculosis, as a result of which many were evacuated to southern hospitals. In 1959 Northern Affairs turned over command of the slow-moving patrol to the senior doctor, and in 1968 National Health and Welfare belatedly decided that the movement of Inuit into settlements with nursing stations and airstrips made the C. D. Howe service redundant, so the patrol was discontinued.

  • Erratum

  • Journal:
    Polar Record / Volume 20 / Issue 124 / January 1980
    Published online by Cambridge University Press:
    27 October 2009, p. 84
    • Article
      • You have access
    • PDF
    • Export citation

  • Polar Record, Vol 19, No 123, September 1979, p 614–16. ‘Otter Glacier’ was officially named Armstrong Glacier in 1976.

  • Hovercraft trials in the Mackenzie River delta, 1966

  • P. F. Cooper, Jr, J. W. Storr, RCAF
  • Journal:
    Polar Record / Volume 13 / Issue 85 / January 1967
    Published online by Cambridge University Press:
    27 October 2009, pp. 433-437

  • Hovercraft, or air-cushion vehicles, have been proposed several times as a means of polar transport (Mellor, 1963; Fuchs, 1964, 1966; Law, 1965; Cooper, 1965). They ride on a cushion of low pressure air which eliminates friction between the craft and the ground surface, the air being contained by flexible skirts and peripheral jets to give a substantial obstacle clearance. Their low bearing pressure (of the order of 0·01 kg/cm2) makes them potentially suitable for over-snow use. They can travel equally well over ice, snow, and water and thus can give year-round service on Arctic rivers and seas. There is no need for costly facilities such as docks or airstrips at terminals. Finally, the hard structure clearance provided by the flexible skirts should enable the vehicle to cross areas of rough sea ice or pressure ridges without a route being prepared.

Page 206 of 665