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Wintertime Storage of Water in Buried Supraglacial Lakes Across the Greenland Ice Sheet : Volume 8, Issue 4 (18/07/2014)

By Koenig, L. S.

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Book Id: WPLBN0004023070
Format Type: PDF Article :
File Size: Pages 33
Reproduction Date: 2015

Title: Wintertime Storage of Water in Buried Supraglacial Lakes Across the Greenland Ice Sheet : Volume 8, Issue 4 (18/07/2014)  
Author: Koenig, L. S.
Volume: Vol. 8, Issue 4
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Montgomery, L. N., Hamilton, S. L., Joseph, C. A., Leuschen, C., Gogineni, P., Koenig, L. S.,...Lampkin, D. J. (2014). Wintertime Storage of Water in Buried Supraglacial Lakes Across the Greenland Ice Sheet : Volume 8, Issue 4 (18/07/2014). Retrieved from http://www.ebooklibrary.org/


Description
Description: Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA. Surface melt over the Greenland Ice Sheet (GrIS) is increasing and estimated to account for half or more of the total mass loss. Little, however, is known about the hydrologic pathways that route surface melt within the ice sheet. In this study, we present over-winter storage of water in buried supraglacial lakes as one hydrologic pathway for surface melt, referred to as buried lakes. Airborne radar echograms are used to detect the buried lakes that are distributed extensively around the margin of the GrIS. The subsurface water can persist through multiple winters and is, on average, ~4.2 + 0.4 m below the surface. The few buried lakes that are visible at the surface of the GrIS have a~unique visible signature associated with a darker blue color where subsurface water is located. The volume of retained water in the buried lakes is likely insignificant compared to the total mass loss from the GrIS but the water will have important implications locally for the development of the englacial hydrologic network, ice temperature profiles and glacial dynamics. The buried lakes represent a small but year-round source of meltwater in the GrIS hydrologic system.

Summary
Wintertime storage of water in buried supraglacial lakes across the Greenland Ice Sheet

Excerpt
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