Results 41 to 50 of about 5,522 (216)

A Ten-Year Record of Supraglacial Lake Evolution and Rapid Drainage in West Greenland Using an Automated Processing Algorithm for Multispectral Imagery [PDF]

, 2013
The rapid drainage of supraglacial lakes introduces large pulses of meltwater to the subglacial environment and creates moulins, surface-to-bed conduits for future melt.
Andrews, L. C., Catania, G. A., Chipman, J. W., Hawley, R. L., Hoffman, M. J., Luthi, M. P., Morriss, B. F., Neumann, T. A.   +7 more
core   +6 more sources

Intercomparison of surface meltwater routing models for the Greenland ice sheet and influence on subglacial effective pressures [PDF]

The Cryosphere, 2020
Each summer, large volumes of surface meltwater drain off the Greenland ice sheet (GrIS) surface through moulins to the bed, impacting subglacial hydrology and ice flow dynamics.
K. Yang, K. Yang, A. Sommers, L. C. Andrews, L. C. Smith, L. C. Smith, X. Lu, X. Lu, X. Fettweis, M. Li, M. Li   +10 more
doaj   +1 more source

Observed and modeled moulin heads in the Pâkitsoq region of Greenland suggest subglacial channel network effects [PDF]

The Cryosphere, 2023
In the ablation zone of land-terminating areas of the Greenland Ice Sheet, water pressures at the bed control seasonal and daily ice motion variability.
C. Trunz, C. Trunz, K. Poinar, L. C. Andrews, M. D. Covington, J. Mejia, J. Mejia, J. Gulley, V. Siegel   +8 more
doaj   +1 more source

Modeling Antarctic subglacial lake filling and drainage cycles [PDF]

The Cryosphere, 2016
The growth and drainage of active subglacial lakes in Antarctica has previously been inferred from analysis of ice surface altimetry data. We use a subglacial hydrology model applied to a synthetic Antarctic ice stream to examine internal controls on the
C. F. Dow, M. A. Werder, S. Nowicki, R. T. Walker   +3 more
doaj   +1 more source

Subglacial hydrology modeling predicts high winter water pressure and spatially variable transmissivity at Helheim Glacier, Greenland

Journal of Glaciology, 2023
Water pressure beneath glaciers influences ice velocity. Subglacial hydrology models are helpful for gaining insight into basal conditions, but models depend on unconstrained parameters, and a current challenge is reproducing elevated water pressures in ...
Aleah Sommers, Colin Meyer, Mathieu Morlighem, Harihar Rajaram, Kristin Poinar, Winnie Chu, Jessica Mejia   +6 more
doaj   +1 more source

Hydrology and dynamics of a polythermal (mostly cold) High Arctic glacier [PDF]

, 2002
Peer reviewedPublisher ...
Andreasen, Bingham, Bingham, Blatter, Blatter, Boon, Boon, Cattle, Copland, Copland, Copland, Dowdeswell, Etzelmüller, Fountain, Hock, Hodson, Hooke, Houghton, Iken, Iken, Iken, Jansson, Kamb, Kavanaugh, Mair, Mair, Manabe, Meier, Modge, Munro, Müller, Nienow, Parizek, Prowse, Rabus, Rippin, Rippin, Skidmore, Wadham, Willis, Willis, Zwally   +41 more
core   +2 more sources

Near-margin ice thickness and subglacial water routing, Leverett Glacier, Greenland

Arctic, Antarctic, and Alpine Research, 2018
Ice thickness measurements near the margin of the Greenland Ice Sheet (GrIS) are relatively sparse, presenting issues for modeling ice-flow dynamics, ice-sheet change, and subglacial hydrology.
Neil Ross, Andrew J. Sole, Stephen J. Livingstone, Ádam Igneczi, Mathieu Morlighem   +4 more
doaj   +1 more source

Two-way coupling between ice flow and channelized subglacial drainage enhances modeled marine-ice-sheet retreat [PDF]

The Cryosphere
Ice-sheet models used to predict sea-level rise often neglect subglacial hydrology. However, theory and observations suggest that ice flow and subglacial water flow are bidirectionally coupled: ice geometry affects hydraulic potential, hydraulic ...
G. Lu, J. Kingslake
doaj   +1 more source

Seasonal variations in Greenland Ice Sheet motion : Inland extent and behaviour at higher elevations [PDF]

, 2011
Peer ...
Bartholomew, I. D., Cowton, T., King, M. A., Mair, D., Nienow, P., Palmer, S., Sole, A.   +6 more
core   +2 more sources

Recent Advances in Our Understanding of the Role of Meltwater in the Greenland Ice Sheet System [PDF]

, 2017
Nienow, Sole and Cowton’s Greenland research has been supported by a number of UK NERC research grants (NER/O/S/2003/00620; NE/F021399/1; NE/H024964/1; NE/K015249/1; NE/K014609/1) and Slater has been supported by a NERC PhD studentshipPurpose of the ...
A Igneczi, A Mikkelsen, A Sole, A Sundal, AA Leeson, AAW Fitzpatrick, AG Fountain, AJ Tedstone, AJ Tedstone, AV Sundal, B Hallet, B Hasholt, B Hudson, B Kamb, BP Hubbard, C Charalampidis, C Koziol, C Miege, C Schoof, CC Clason, CE Bøggild, CF Dow, CF Dow, D As van, D Carroll, D Voytenko, DA Slater, DK Hall, DM Chandler, DM Chandler, DR Shapero, E Hanna, EM Enderlin, F Straneo, F Walter, FM Nick, GE Flowers, GH Gudmundsson, H Machguth, H Seroussi, HJ Zwally, I Bartholomew, I Joughin, I Joughin, I Joughin, IGM Wientjes, IJ Hewitt, IM Howat, IM Howat, J Fyke, J Harper, J Kingslake, JA Graly, JC Yde, JE Box, JR Hawkings, JT Andrews, K Echelmeyer, K Jezek, K Poinar, K Poinar, L Meire, LA Stevens, LC Andrews, LC Smith, M Tedesco, MA Werder, MG JA, MJ Hopwood, MJ Krawczynski, MP Bhatia, MP Lüthi, MR Broeke van den, N Selmes, NE Young, OV Sergienko, P Jansson, RJ Motyka, RL Hooke, RR Forster, RSW Wal van de, RSW Wal van de, S Gordon, S Hofer, S Sugiyama, SB Das, SH Doyle, SH Doyle, SH Doyle, SJ Palmer, SL Bevan, SL Greenwood, T Cowton, T Cowton, T Cowton, T Meierbachtol, T Moon, T Moon, T Phillips, TD James, TDL Irvine-Fynn, VW Chu, WT Pfeffer, X Fettweis   +103 more
core   +3 more sources