Moulin density controls drainage development beneath the Greenland ice sheet
نویسندگان
چکیده
منابع مشابه
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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Subglacial topography plays an important role in modulating the distribution and flow of basal water. Where topography predates ice sheet inception, it can also reveal insights into former tectonic and geomorphological processes. Although such associations are known in Antarctica, little consideration has been given to them in Greenland, partly because much of the ice sheet bed is thought to be...
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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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S. J. Koenig, A. M. Dolan, B. de Boer, E. J. Stone, D. J. Hill, R. M. DeConto, A. Abe-Ouchi, D. J. Lunt, D. Pollard, A. Quiquet, F. Saito, J. Savage, and R. van de Wal Department of Geosciences, University of Massachusetts, 611 N. Pleasant St, Amherst, MA 01003, USA School of Earth and Environment, Earth and Environment Building, University of Leeds, Leeds, LS2 9JT, UK Department of Earth Scien...
متن کاملBacteria beneath the West Antarctic ice sheet.
Subglacial environments, particularly those that lie beneath polar ice sheets, are beginning to be recognized as an important part of Earth's biosphere. However, except for indirect indications of microbial assemblages in subglacial Lake Vostok, Antarctica, no sub-ice sheet environments have been shown to support microbial ecosystems. Here we report 16S rRNA gene and isolate diversity in sedime...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Earth Surface
سال: 2016
ISSN: 2169-9003,2169-9011
DOI: 10.1002/2015jf003801