Ice-dammed lake drainage in west Greenland: Drainage pattern and implications on ice flow and bedrock motion

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منابع مشابه

Ice-Dammed Lake Drainage Evolution at Russell Glacier, West Greenland

1 School of Geography, University of Leeds, Leeds, United Kingdom, 2 Geography, Staffordshire University, Stoke-on-Trent, United Kingdom, 3 Department of Geography, University of Sheffield, Sheffield, United Kingdom, 4 Arctic Technology Centre, Technical University of Denmark, Kemitorvet, Lyngby, Denmark, 5 Department of Geography and Geology, University of Copenhagen, Copenhagen, Denmark, 6 Ge...

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Subglacial lake drainage detected beneath the Greenland ice sheet

The contribution of the Greenland ice sheet to sea-level rise has accelerated in recent decades. Subglacial lake drainage events can induce an ice sheet dynamic response--a process that has been observed in Antarctica, but not yet in Greenland, where the presence of subglacial lakes has only recently been discovered. Here we investigate the water flow paths from a subglacial lake, which drained...

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Ice dynamic response to two modes of surface lake drainage on the Greenland ice sheet

Supraglacial lake drainage on the Greenland ice sheet opens surface-to-bed connections, reduces basal friction, and temporarily increases ice flow velocities by up to an order of magnitude. Existing field-based observations of lake drainages and their impact on ice dynamics are limited, and focus on one specific draining mechanism. Here, we report and analyse global positioning system measureme...

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Fracture propagation to the base of the Greenland Ice Sheet during supraglacial lake drainage.

Surface meltwater that reaches the base of an ice sheet creates a mechanism for the rapid response of ice flow to climate change. The process whereby such a pathway is created through thick, cold ice has not, however, been previously observed. We describe the rapid (<2 hours) drainage of a large supraglacial lake down 980 meters through to the bed of the Greenland Ice Sheet initiated by water-d...

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Ice Sheet During Supraglacial Lake Drainage Fracture Propagation

http://www.sciencemag.org/cgi/content/full/320/5877/778 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/1153360/DC1 can be found at: Supporting Online Material found at: can be related to this article A list of selected additional articles on the Science Web sites http://www.sc...

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ژورنال

عنوان ژورنال: Geophysical Research Letters

سال: 2017

ISSN: 0094-8276

DOI: 10.1002/2017gl074081