Thermal conditions in permafrost: a review of North American literature
This review of published information on thermal conditions in permafrost covers, primarily, the ten year period between the 1st International Permafrost Conference held in 1963, and the 2nd, held in Yakutsk, U.S.S.R., in 1973. The subject is covered in two parts - "The Surface Boundary Conditio...
| Main Authors: | , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
National Academy of Sciences, Publ.
1973
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| Online Access: | https://nrc-publications.canada.ca/eng/view/ft/?id=4ca8944d-c1d8-4bbe-ad35-310ed6e638ba https://nrc-publications.canada.ca/eng/view/object/?id=4ca8944d-c1d8-4bbe-ad35-310ed6e638ba https://nrc-publications.canada.ca/fra/voir/objet/?id=4ca8944d-c1d8-4bbe-ad35-310ed6e638ba |
| Summary: | This review of published information on thermal conditions in permafrost covers, primarily, the ten year period between the 1st International Permafrost Conference held in 1963, and the 2nd, held in Yakutsk, U.S.S.R., in 1973. The subject is covered in two parts - "The Surface Boundary Condition" (prepared by LWG) and "Subsurface thermal Conditions" (prepared by AHL). The use of computerized numerical methods for ground temperature calculations is reviewed in an appendix prepared by L.E. Goodrich. Subjects covered are: the climatological balance; components of the surface heat balance; dependence of ground temperature on surface conditions; effect of surface changes; steady ground heat flow and the depth of permafrost; seasonal ground temperature variations; effects of long term variations of surface temperature; effects of lateral variation in surface temperature; and ground thermal properties. Le présent exposé de synthèse sur la littérature touchant les conditions thermiques des couvertures de pergélisol couvre surtout la décennie entre la première conférence internationale sur le pergélisol tenue en 1963 et la deuxiè me, tenue à Yakutsk (U.R.S.S.) en 1973. L'exposé comporte deux parties; la première, par L.W. Gold, est intitulée "The Surface Boundary Condition" et la deuxième, par A.H. Lachenbruch, est intitulée "Subsurface Thermal Conditions". Dans l'annexe, L.E. Goodrich passe en revue les méthodes numé riques automatisées servant au calcul de la température du sol. Les sujets traités sont: le bilan climatologique, les composantes du bilan de chaleur en surface, la dépendance de la température du sol vis-à-vis des conditions en surface, l' effet des changements en surface, la stabilité du flux de chaleur interne et la profondeur du pergélisol, les variations saisonnières de la température du sol, l'effet des variations à long terme de la température en surface, les effets d'une variation latérale de la température en surface et les propriétés thermiques du sol. Peer reviewed: No NRC publication: Yes |
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