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Climatic change in a high-altitude alpine area suggested by the isotopic composition of cold basal glacier ice

par Lorrain, Reginald ;Haeberli, Wilfried
Référence Annals of glaciology, 14, page (168-171)
Publication Publié, 1990

Article révisé par les pairs

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Résumé :

For the first time, a cold ice cover of a summit in the central Swiss Alps has been sampled from the surface to the bed for determining its isotopic composition in δD and δ18O. Results of the analyses show a striking decrease of δ-values with depth. The δ-value differences are greater than those explicable by a direct temperature effect, but a substantial increase in melt water percolation through the firn since the formation of the deepest ice layer may explain the situation of this high-altitude ice. -Authors