Snow Movement - Drift Control for Surface (At-Grade) Camps

Snowdrift studies made 1962-67 around an unprotected building and clusters of buildings at the US Naval Civil Engineering Laboratory camp on the Ross Ice Shelf, Antarctica, show that surface camps eventually become snow covered. Drift control measures to increase the usefulness and life of such camp...

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Published in:ARCTIC
Main Author: Stehle, N.S.
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1969
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66250
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spelling ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/66250 2023-05-15T13:54:49+02:00 Snow Movement - Drift Control for Surface (At-Grade) Camps Stehle, N.S. 1969-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66250 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66250/50163 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66250 ARCTIC; Vol. 22 No. 2 (1969): June: 85–168; 112-119 1923-1245 0004-0843 Evenki info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1969 ftunivcalgaryojs 2022-03-22T21:23:07Z Snowdrift studies made 1962-67 around an unprotected building and clusters of buildings at the US Naval Civil Engineering Laboratory camp on the Ross Ice Shelf, Antarctica, show that surface camps eventually become snow covered. Drift control measures to increase the usefulness and life of such camps are: 1) orient the buildings 45 degrees to the summer storm wind with the long axis parallel to the winter storm wind where these directions 45 degrees apart, where not, approach this arrangement as closely as possible; 2) place buildings far enough apart to avoid coalescence of drift (25 times the height); 3) treat equipment and material as a separate line of buildings for the same reason; 4) erect buildings on mobile foundations to move them easily when drift becomes a problem; 5) leave enough room for easy clearing of snow (60 ft needed by sizes 4 or 8 snow tractor). Small camps should be elevated on snow platforms when 5000 cu yd or less of snow are required; platform to be ~4 ft above snow surface for a 2-yr life in a region with snow accumulation of 1 ft or less/yr (the greater the accumulation the higher the platform). Because drift increases downwind of such an area, other buildings or supplies must not be closer than 10-30 times the height of the obstruction downwind (length of drift is at least 10 times the height of obstruction). Mouvement de la neige et maîtrise des amoncellements dans les campements de surface. Dans les régions polaires, le mouvement de la neige pose des problèmes aux campements de surface, surtout dans les zones d'accumulation nivale annuelle nette. Pendant quatre ans, on a mené des études sur les amoncellements de neige autour d'un bâtiment isolé et non protégé et autour d'un groupe de bâtiments, dans une zone d'accumulation nivale annuelle nette, sur la barrière de Ross, près de la base de McMurdo en Antarctique: ces études ont démontré que les campements de surface sont éventuellement recouverts par la neige amoncelée. Cependant, on peut faire appel à certaines techniques de maîtrise des amoncellements et prolonger ainsi l'utilité et la vie de ces campements. Parmi les mesures mises au point, mentionnons l'orientation correcte des bâtiments et un tracé du campement en rapport avec les principaux vents de tempête. De plus, on peut munir les bâtiments de fondations mobiles, ce qui facilite les déménagements lorsque l'accumulation de neige devient excessive. Article in Journal/Newspaper Antarc* Antarctica Antarctique* Arctic Evenki Ice Shelf Ross Ice Shelf University of Calgary Journal Hosting Evenki ENVELOPE(132.817,132.817,59.683,59.683) Ross Ice Shelf ARCTIC 22 2
institution Open Polar
collection University of Calgary Journal Hosting
op_collection_id ftunivcalgaryojs
language English
topic Evenki
spellingShingle Evenki
Stehle, N.S.
Snow Movement - Drift Control for Surface (At-Grade) Camps
topic_facet Evenki
description Snowdrift studies made 1962-67 around an unprotected building and clusters of buildings at the US Naval Civil Engineering Laboratory camp on the Ross Ice Shelf, Antarctica, show that surface camps eventually become snow covered. Drift control measures to increase the usefulness and life of such camps are: 1) orient the buildings 45 degrees to the summer storm wind with the long axis parallel to the winter storm wind where these directions 45 degrees apart, where not, approach this arrangement as closely as possible; 2) place buildings far enough apart to avoid coalescence of drift (25 times the height); 3) treat equipment and material as a separate line of buildings for the same reason; 4) erect buildings on mobile foundations to move them easily when drift becomes a problem; 5) leave enough room for easy clearing of snow (60 ft needed by sizes 4 or 8 snow tractor). Small camps should be elevated on snow platforms when 5000 cu yd or less of snow are required; platform to be ~4 ft above snow surface for a 2-yr life in a region with snow accumulation of 1 ft or less/yr (the greater the accumulation the higher the platform). Because drift increases downwind of such an area, other buildings or supplies must not be closer than 10-30 times the height of the obstruction downwind (length of drift is at least 10 times the height of obstruction). Mouvement de la neige et maîtrise des amoncellements dans les campements de surface. Dans les régions polaires, le mouvement de la neige pose des problèmes aux campements de surface, surtout dans les zones d'accumulation nivale annuelle nette. Pendant quatre ans, on a mené des études sur les amoncellements de neige autour d'un bâtiment isolé et non protégé et autour d'un groupe de bâtiments, dans une zone d'accumulation nivale annuelle nette, sur la barrière de Ross, près de la base de McMurdo en Antarctique: ces études ont démontré que les campements de surface sont éventuellement recouverts par la neige amoncelée. Cependant, on peut faire appel à certaines techniques de maîtrise des amoncellements et prolonger ainsi l'utilité et la vie de ces campements. Parmi les mesures mises au point, mentionnons l'orientation correcte des bâtiments et un tracé du campement en rapport avec les principaux vents de tempête. De plus, on peut munir les bâtiments de fondations mobiles, ce qui facilite les déménagements lorsque l'accumulation de neige devient excessive.
format Article in Journal/Newspaper
author Stehle, N.S.
author_facet Stehle, N.S.
author_sort Stehle, N.S.
title Snow Movement - Drift Control for Surface (At-Grade) Camps
title_short Snow Movement - Drift Control for Surface (At-Grade) Camps
title_full Snow Movement - Drift Control for Surface (At-Grade) Camps
title_fullStr Snow Movement - Drift Control for Surface (At-Grade) Camps
title_full_unstemmed Snow Movement - Drift Control for Surface (At-Grade) Camps
title_sort snow movement - drift control for surface (at-grade) camps
publisher The Arctic Institute of North America
publishDate 1969
url https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66250
long_lat ENVELOPE(132.817,132.817,59.683,59.683)
geographic Evenki
Ross Ice Shelf
geographic_facet Evenki
Ross Ice Shelf
genre Antarc*
Antarctica
Antarctique*
Arctic
Evenki
Ice Shelf
Ross Ice Shelf
genre_facet Antarc*
Antarctica
Antarctique*
Arctic
Evenki
Ice Shelf
Ross Ice Shelf
op_source ARCTIC; Vol. 22 No. 2 (1969): June: 85–168; 112-119
1923-1245
0004-0843
op_relation https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66250/50163
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66250
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