The Balance of the Greenland Ice Sheet

  • Bauer A
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Abstract

Planimetry of the 15 maps of scale 1:1,000,000 of the World Aeronautical Chart , U.S.A.F., gives 1.726 × 10 6 km. 2 for the surface area of the Greenland Ice Sheet. The hypsometric curve obtained by measuring the area between contours at 1000-ft. (305 m.) intervals with a planimeter gives 2135 m. for the mean height of the ice sheet. The normal area distribution curve of the ice sheet shows that is certainly in the “Inland Ice” type in Ahlmann’s classification. The mean firn line of the ice sheet is at a height of 1390 m. The discharge from the glaciers in the form of icebergs is estimated to be 215 km. 3 of water per year, and the nett balance of the ice cap is negative and about 100 km. 3 of water per year. La planimétrie des 15 feuilles au 1:1,000,000 ème de la “World Aeronautical Chart, U.S.A.F.,” donne 1.726 × 10 6 km 2 pour la surface de l’Inlandsis du Groenland. La courbe hypsométrique déduite de la planimétrie des surfaces entre les isohypses d’intervalle 1000 pieds (305 m) donne 2135 m pour l’altitude moyenne de l’Inlandsis. La courbe normale de distribution des surfaces de l’Inlandsis montre que celui-ci entre bien dans la type “Inland Ice” de Is classification d’Ahlmann. La ligne de névé moyenne de l’Inlandsis est it l’altitude 1390 m. La décharge des glaciers sous forme d’icebergs est estimée à 215 km 3 par an et le bilan de l’Inlandsis est négatif d’environ 100 km 3 d’eau par an.

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APA

Bauer, A. (1955). The Balance of the Greenland Ice Sheet. Journal of Glaciology, 2(17), 456–462. https://doi.org/10.3189/002214355793702271

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