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TitreFurther statistics on the distribution of permafrost and ground ice in the northern hemisphere
AuteurZhang, T; Heginbottom, J A; Barry, R G; Brown, J
SourcePolar Geography vol. 24, no. 2, 2000 p. 126-131, https://doi.org/10.1080/10889370009377692
Année2000
Séries alt.Commission géologique du Canada, Contributions aux publications extérieures 2000235
ÉditeurInforma UK Limited
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1080/10889370009377692
Mediapapier; en ligne; numérique
Formatspdf
Sujetspergélisol; glace fossile; méthodes statistiques; analyses statistiques; géologie des dépôts meubles/géomorphologie; géomathématique
Illustrationstables
Résumé(disponible en anglais seulement)
The authors, based on the International Permafrost Association (IPA) Circumarctic Map of Permafrost and Ground Ice Conditions, determine the area occupied by the permafrost region (up to 22.79 × 106 km2, or 23.9% of the exposed land area of the Northern Hemisphere). They argue, however, that permafrost may not be present everywhere within this permafrost region. They present estimates that indicate that the actual area underlain by permafrost is smaller (ranging approximately from 12.21 to 16.98 × 106 km2, or from 12.8% to 17.8% of the exposed land area). They also estimate the volume of ground ice, as varying approximately from 10.80 to 35.46 × 103 km3 (about 2.7 to 8.8 cm sea?level equivalent).
GEOSCAN ID211945