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|a Gauging Greenland's Subglacial Water |h [electronic resource] |y English. |
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|a [S.l.] : |b American Association of the Advancement of Science, |c 2013. |
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|a Science Magazine Volume 341, Issue 721 |y English. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a The supply, storage, and fl ow of water
under an ice sheet are crucial for its
overall dynamics. The density difference
between ice and water limits subglacial
water pressure to the pressure from overlying
ice. Near this limit, the ice gradually becomes
decoupled from the base (see the figure),
water-filled cavities form, and sediments
become weakened. The velocity of ice moving
over the bedrock increases due to reduced
friction and faster sediment deformation.
Subglacial water pressure is therefore the key
parameter that controls basal motion, ice fl ux,
and the future evolution of an ice sheet. On
page 777 of this issue ( 1), Meierbachtol et al.
present a detailed record of water pressure
variability under one region of the Greenland
ice sheet. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15062117/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/21/17/00001/FI15062117_thm.jpg |
