文章基本信息

标题：Observed runoff, jökulhlaups and suspended sediment load from the Greenland ice sheet at Kangerlussuaq, West Greenland, 2007 and 2008
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作者：Sebastian H. Mernild ; Bent Hasholt
期刊名称：Journal of Glaciology
印刷版ISSN：0022-1430
电子版ISSN：1727-5652
出版年度：2009
卷号：55
期号：193
页码：855-858
DOI：10.3189/002214309790152465
出版社：Cambridge University Press
摘要：This study fills the gap in hydrologic measurements of runoff exiting a part of the Greenland ice sheet (GrIS), the Kangerlussuaq drainage area, West Greenland. The observations are of value for obtaining knowledge about the terrestrial freshwater and sediment output from part of the GrIS and the strip of land between the ice sheet and the ocean, in the context of varying ice-sheet surface melt and influx entering the ocean. High-resolution stage, discharge and suspended sediment load show a decrease in runoff of ∼25% and in sediment load of ∼40% from 2007 to 2008 in response to a decrease in the summer accumulated number of positive degree-days. During the 2007 and 2008 runoff seasons, jökulhlaups were observed at Kangerlussuaq, drained from an ice-dammed lake at the margin of the GrIS.