Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow

Autor:	Kristine M. Larson, H. Jay Zwally, Waleed Abdalati, Thomas A. Herring, Jack L. Saba, Konrad Steffen
Rok vydání:	2002
Předmět:	geography Multidisciplinary geography.geographical_feature_category Meteorology Ice stream Greenland ice sheet Basal sliding Atmospheric sciences Subglacial stream Sea ice growth processes Glacial period Ice sheet Meltwater Geology
Zdroj:	Science. 297:218-222
ISSN:	1095-9203 0036-8075
DOI:	10.1126/science.1072708
Popis:	Ice flow at a location in the equilibrium zone of the west-central Greenland Ice Sheet accelerates above the midwinter average rate during periods of summer melting. The near coincidence of the ice acceleration with the duration of surface melting, followed by deceleration after the melting ceases, indicates that glacial sliding is enhanced by rapid migration of surface meltwater to the ice-bedrock interface. Interannual variations in the ice acceleration are correlated with variations in the intensity of the surface melting, with larger increases accompanying higher amounts of summer melting. The indicated coupling between surface melting and ice-sheet flow provides a mechanism for rapid, large-scale, dynamic responses of ice sheets to climate warming.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::556ae4f102f1f0befd0fcca45d1bde6a https://doi.org/10.1126/science.1072708 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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