Results 61 to 70 of about 5,522 (216)

Short-term variability in Greenland Ice Sheet motion forced by time-varying meltwater inputs: implications for the relationship between subglacial drainage system behavior and ice velocity. [PDF]

, 2012
High resolution measurements of ice motion along a -120 km transect in a land-terminating section of the GrIS reveal short-term velocity variations (
Anderson, Andrew Sole, Bamber, Bartholomaus, Bartholomew, Bartholomew, Bartholomew, Bingham, Campbell, Catania, Clarke, Clarke, Cutler, Das, Douglas Mair, Fountain, Herring, Hewitt, Hock, Hooke, Hubbard, Hubbard, Ian Bartholomew, Iken, Iken, Iken, Iken, Joughin, Kamb, Kamb, Kamb, Mair, Matt A. King, Meehl, Nienow, Nienow, Nienow, Palmer, Parizek, Parizek, Paterson, Peter Nienow, Pimentel, Price, Raymond, Röthlisberger, Röthlisberger, Schoof, Shampine, Shepherd, Shreve, Sundal, Thomas Cowton, Van de Wal, Van de Wal, Walder, Zwally   +56 more
core   +4 more sources

Thorncliffe Formation: A proglacial to subglacial lacustrine basin sequence, Greater Toronto Region, Canada

Boreas, EarlyView.
Map of Lower sediment (LS) thickness is a surrogate for the distribution of Thorncliffe Formation (TF) and ~75% of TF thickness from the slope of Niagara Escarpment east to Brighton. Inset images show the LS sequence at the Don Valleys brickyards (DVBY) and undeformed TF sand and gravel (~15 m) below Newmarket Till (NT) at sites L and Co.
David R. Sharpe, Charles E. Logan, Ross D. Knight, Andre J.‐M. Pugin   +3 more
wiley   +1 more source

Long-term variability of proglacial groundwater-fed hydrological systems in an area of glacier retreat, Skeioararsandur, Iceland [PDF]

, 2015
Proglacial groundwater‐fed features, such as seeps, substantially impact proglacial geomorphology, hydrology, and ecology. However, there is a paucity of research on the impacts of climate change and glacier retreat on the extent of these important ...
Bahr, Bennett, Björnsson, Björnsson, Björnsson, Blaen, Blaen, Boulton, Boulton, Bradwell, Brown, Brown, Brown, Brown, Cooper, Cooper, Crossman, Crossman, Dragon, Drexler, Evans, Everest, Fay, Finger, Flowers, Flowers, Freeze, Glaser, Gremaud, Gremaud, Guðmundsson, Guðmundsson, Guðmundsson, Haldorsen, Haldorsen, Hodgkins, Jacobsen, Jerome, Jerome, Jude-Eton, Jumpponen, Kamb, Kellerer-Pirklbauer, Langston, Langston, Magilligan, Magnusson, Makridakis, Malard, Marren, Marren, Marren, Marren, Marteinsdóttir, Marteinsdóttir, Milner, Milner, Nield, Pagli, Piotrowski, Pálsson, Robinson, Robinson, Robinson, Roy, Roy, Russell, Russell, Rutter, Solberg, Thompson, Thompson, Thordarson, Thornthwaite, Tóth, Tóth, Tóth, Van Dijk, Waller, Ward, Wiśniewski, Wolfe   +81 more
core   +1 more source

Revised classification of glaciofluvial landforms in the Finnish sector of the Fennoscandian Ice Sheet

Boreas, EarlyView.
Effective and sustainable land use, conservation, and the use of geological resources (incl. raw materials, aggregates and groundwater) require a clear classification system of sedimentary units, with well‐defined vocabulary and unified mapping practices.
Jussi Hovikoski, Jukka‐Pekka Palmu, Tapio Väänänen, Markus Valkama, Antti E. K. Ojala, Satu Putkinen, Reijo Pitkäranta   +6 more
wiley   +1 more source

Cold comfort for change: Stream mats as biological indicators of ecosystem processes in the McMurdo Dry Valleys, Antarctica

Journal of Phycology, EarlyView.
Abstract Glacier‐fed streams (GFSs) make ideal systems for studying climate‐related changes. Some of the best‐studied GFSs are found in the McMurdo Dry Valleys (MDVs) of Antarctica, one of the Earth's coldest and driest deserts. Despite their harsh and isolated nature, MDV GFSs represent an oasis of life in a landscape visually devoid of it, with ...
Tyler J. Kohler, Ian Hawes, Adrian Howkins, Lydia H. Zeglin, Mike N. Gooseff, Diane M. McKnight   +5 more
wiley   +1 more source

Distribution and dynamics of Greenland subglacial lakes

Nature Communications, 2019
Subglacial lakes can influence basal hydrology and ice flow in Antarctica, but are poorly constrained in Greenland. Here the authors provide the first ice sheet-wide inventory of subglacial lakes beneath GrIS, including 54 uncharted lakes.
J. S. Bowling, S. J. Livingstone, A. J. Sole, W. Chu   +3 more
doaj   +1 more source

Subglacial hydrology at Rink Isbræ, West Greenland inferred from sediment plume appearance

Annals of Glaciology, 2016
Marine-terminating outlet glaciers discharge most of the Greenland ice sheet's mass through frontal ablation and meltwater runoff. While calving can be estimated by in situ and remote sensing observations, submarine melting and subglacial meltwater ...
Kristin M. Schild, Robert L. Hawley, Blaine F. Morriss   +2 more
doaj   +1 more source

Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream

Geophysical Research Letters, 2023
Subglacial hydrology can exert an important control on ice flow by affecting friction at the ice‐bedrock interface. Here, we report on a series of subglacial drainage events along the Northeast Greenland Ice Stream (NEGIS), initiating as far inland as ...
J. K. Andersen, N. Rathmann, C. S. Hvidberg, A. Grinsted, A. Kusk, J. P. Merryman Boncori, J. Mouginot   +6 more
doaj   +1 more source

Models of ice melting and edifice growth during subglacial basaltic eruptions. [PDF]

, 2007
Models of the early stages of basaltic eruptions beneath temperate glaciers are presented that consider the evolving sizes of volcanic edifices emplaced within subglacial cavities.
Tuffen, Hugh
core   +1 more source

Mechanisms of Surface Meltwater Ponding and Drainage on the Greenland Ice Sheet Revealed Using SkySat Imagery and Deep Learning

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract Surface meltwater impacts Greenland Ice Sheet mass balance indirectly by reducing albedo and promoting hydrofracture. However, fully understanding both processes requires accurate mapping of small‐scale features such as ponds, channels, and moulins that govern meltwater formation and drainage. Here we investigate surface water dynamics at high
J. C. Ryan, R. T. Datta, S. W. Cooley
wiley   +1 more source