Results 31 to 40 of about 5,522 (216)

Evolution of drainage system morphology at a land-terminating Greenland outlet glacier [PDF]

, 2012
This work was funded by the UK Natural Environment Research Council (through grants to Nienow, Mair, and Wadham, and a studentship to Bartholomew), the Edinburgh University Moss Centenary Scholarship (Cowton and Bartholomew), and a Carnegie Research ...
Alley, Bartholomaus, Bartholomew, Bartholomew, Bartholomew, Bartholomew, Behrens, Bhatia, Bingham, Collins, Collins, Cowton, Cuffey, Das, Fountain, Fountain, Fountain, Gulley, Hock, Hock, Hoffman, Howat, Hubbard, Hubbard, Iken, Iken, Iken, Kamb, Kamb, Lewis, Lliboutry, Mair, Mair, Nienow, Nienow, Palmer, Pimentel, Rignot, Röthlisberger, Schoof, Schuler, Schuler, Seaberg, Sole, Sundal, Swift, Veen, Wal, Walder, Werder, Willis, Willis, Zwally   +52 more
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Recent advances in understanding Antarctic subglacial lakes and hydrology [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
It is now well documented that over 400 subglacial lakes exist across the bed of the Antarctic Ice Sheet. They comprise a variety of sizes and volumes (from the approx. 250 km long Lake Vostok to bodies of water less than 1 km in length), relate to a number of discrete topographic settings (from those contained within valleys to lakes that reside in ...
Siegert MJ, Ross N, LeBrocq A
openaire   +4 more sources

Effect of near-terminus subglacial hydrology on tidewater glacier submarine melt rates [PDF]

, 2015
Submarine melting of Greenlandic tidewater glacier termini is proposed as a possiblemechanism driving their recent thinning and retreat. We use a general circulation model, MITgcm, tosimulate water circulation driven by subglacial discharge at the ...
A. J. Sole, Broeke, Chauché, Christoffersen, Cowton, D. A. Slater, D. N. Goldberg, Fountain, Holland, Holland, Huppert, Inall, Jackson, Jenkins, Jiskoot, Kimura, Losch, Marshall, Marshall, McPhee, Morton, O'Leary, P. W. Nienow, Pritchard, Rignot, Rignot, Rignot, Röthlisberger, Schoof, Sciascia, Sciascia, Straneo, Straneo, Sutherland, Sutherland, T. R. Cowton, Wells, Xu, Xu   +38 more
core   +3 more sources

Seasonal Acceleration of Petermann Glacier, Greenland, From Changes in Subglacial Hydrology

Geophysical Research Letters, 2023
Petermann Glacier is a major outlet glacier of northern Greenland that drains a marine‐based basin vulnerable to destabilization from enhanced oceanic and atmospheric forcings. Using satellite radar interferometry data from the Sentinel‐1a/b missions, we
Shivani Ehrenfeucht, Mathieu Morlighem, Eric Rignot, Christine F. Dow, Jeremie Mouginot   +4 more
doaj   +1 more source

Englacial Pore Water Localizes Shear in Temperate Ice Stream Margins [PDF]

, 2019
The margins of fast‐moving ice streams are characterized by steep velocity gradients. Some of these gradients cannot be explained by a temperature‐dependent viscosity alone.
Haseloff, Marianne, Hewitt, I. J., Katz, R. F.   +2 more
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Sedimentary Signatures of Persistent Subglacial Meltwater Drainage From Thwaites Glacier, Antarctica

Frontiers in Earth Science, 2022
Subglacial meltwater drainage can enhance localized melting along grounding zones and beneath the ice shelves of marine-terminating glaciers. Efforts to constrain the evolution of subglacial hydrology and the resulting influence on ice stability in space
A. P. Lepp, L. M. Simkins, J. B. Anderson, R. W. Clark, J. S. Wellner, C-D. Hillenbrand, J. A. Smith, A. A. Lehrmann, R. Totten, R. D. Larter, K. A. Hogan, F. O. Nitsche, A. G. C. Graham, L. Wacker   +13 more
doaj   +1 more source

Effect of topography on subglacial discharge and submarine melting during tidewater glacier retreat. [PDF]

, 2017
-We explored secular variations in subglacial discharge and submarine melting with an idealized model -Subglacial discharge increases as tidewater glaciers retreat along retrograde beds -Submarine melting depends on subglacial discharge and ...
Amundson, Arendt, Arimitsu, Arneborg, Aðalgeirsdóttir, Benn, Carroll, Carroll, Cowan, Cowton, Cuffey, Echelmeyer, Enderlin, Fried, Harrison, Hock, Holland, Howat, Huss, Jackson, Jansson, Jenkins, Kamb, Luckman, Lydersen, McNabb, Meier, Meire, Mortensen, Motyka, Motyka, Motyka, Motyka, Nick, Nick, O'Leary, O'Neel, Pfeffer, Podrasky, Post, Rignot, Rignot, Roe, Schoof, Slater, Slater, Straneo, Truffer, Urbanski, Veen, Veen, Veen   +51 more
core   +1 more source

The organization of subglacial drainage during the demise of the Finnish Lake District Ice Lobe [PDF]

The Cryosphere
Unknown basal characteristics limit our ability to simulate the subglacial hydrology of rapidly melting contemporary ice sheets. Sediment-based landforms generated beneath Late Pleistocene ice sheets, together with detailed digital elevation models ...
A. J. Hepburn, A. J. Hepburn, C. F. Dow, A. Ojala, J. Mäkinen, E. Ahokangas, J. Hovikoski, J.-P. Palmu, K. Kajuutti   +8 more
doaj   +1 more source

Hydraulic and mechanical properties of glacial sediments beneath Unteraargletscher, Switzerland: implications for glacier basal motion [PDF]

, 2001
The force on a ‘ploughmeter’ and subglacial water pressure have been measured in the same borehole at Unteraargletscher, Switzerland, in order to investigate ice–sediment coupling and the motion at the base of a soft-bedded glacier.
Agassiz, Agassiz, Alley, Alley, Alley, Bear, Blake, Blankenship, Boulton, Brown, Campanella, Carslaw, Engelhardt, Engelhardt, Engelhardt, Fischer, Fischer, Fischer, Fischer, Fischer, Flotron, Freeze, Funk, Funk, Gudmundsson, Gudmundsson, Gudmundsson, Gudmundsson, Head, Hooke, Hugi, Hugi, Humphrey, Iken, Iken, Iverson, Iverson, Iverson, Iverson, Iverson, Janbu, Kamb, Knecht, Lambe, Malyshev, Mitchell, Murray, Murray, Porter, Porter, Press, Ruiter, Röthlisberger, Senneset, Skempton, Truffer, Tulaczyk, Weertman   +57 more
core   +1 more source

Feedbacks between coupled subglacial hydrology and glacier dynamics [PDF]

Journal of Geophysical Research: Earth Surface, 2014
On most glaciers and ice sheet outlets the majority of motion is due to basal slip, a combination of basal sliding and bed deformation. The importance of basal water in controlling sliding is well established, with increased sliding generally related to high basal water pressure, but the details of the interactions between the ice and water systems has
Matthew Hoffman, Stephen Price
openaire   +1 more source