Results 31 to 40 of about 217,482 (300)

Modelling dynamic ice-sheet boundaries and grounding line migration using the level set method

Journal of Glaciology, 2020
Computing predictions of future sea level that include well-defined uncertainty bounds requires models that are capable of robustly simulating the evolution of ice sheets and glaciers.
M. Alamgir Hossain, Sam Pimentel, John M. Stockie   +2 more
doaj   +1 more source

Ice velocity changes in the Ross and Ronne sectors observed using satellite radar data from 1997 and 2009 [PDF]

The Cryosphere, 2012
We report changes in ice velocity of a 6.5 million km² region around South Pole encompassing the Filchner-Ronne and Ross Ice Shelves and a significant portion of the ice streams and glaciers that constitute their catchment areas ...
B. Scheuchl, J. Mouginot, E. Rignot
doaj   +1 more source

The role of near-terminus conditions in the ice-flow speed of Upernavik Isstrøm in northwest Greenland

Annals of Glaciology, 2023
Upernavik Isstrøm, the largest contributor to sea-level rise in northwest Greenland, has experienced complex and contrasting ice-flow-speed changes across its five outlets over the last two decades.
Kelsey M. Voss, Karen E. Alley, David A. Lilien, Dorthe Dahl-Jensen   +3 more
doaj   +1 more source

Seasonal Drift of \u3ci\u3eLethocerus Americanus\u3c/i\u3e (Hemiptera: Belostomatidae) in a Lake Superior Tributary [PDF]

, 2017
Drifting adult Lethocerus americanus were captured and retained by an inclined-screen smolt trap during two field seasons in the Bois Brule River, Wisconsin.
DuBois, Robert B, Rackouski, Michael L
core   +2 more sources

Stream hydrology controls on ice cliff evolution and survival on debris-covered glaciers [PDF]

Earth Surface Dynamics
Ice cliffs are melt hot spots that contribute disproportionately to melt on debris-covered glaciers. In this study, we investigate the impact of supraglacial stream hydrology on ice cliffs using in situ and remote sensing observations, streamflow ...
E. Petersen, R. Hock, R. Hock, M. G. Loso   +3 more
doaj   +1 more source

Sensitivity of Heinrich-type ice-sheet surge characteristics to boundary forcing perturbations [PDF]

Climate of the Past, 2023
Heinrich-type ice-sheet surges are one of the prominent signals of glacial climate variability. They are characterised as abrupt, quasi-periodic episodes of ice-sheet instabilities during which large numbers of icebergs are released from the Laurentide ...
C. Schannwell, U. Mikolajewicz, F. Ziemen, M.-L. Kapsch   +3 more
doaj   +1 more source

Topographic steering of enhanced ice flow at the bottleneck between East and West Antarctica [PDF]

, 2018
Hypothesized drawdown of the East Antarctic Ice Sheet (EAIS) through the ‘bottleneck’ zone between East and West Antarctica would have significant impacts for a large proportion of the Antarctic Ice Sheet.
Arne V. Olesen, Arthern, Banta, Beem, Bell, Bindschadler, Bingham, Bingham, Conway, Corr, DeConto, Fausto Ferraccioli, Fretwell, Hellmer, Hugh F. J. Corr, Hulbe, Jacobel, Jankowski, Jeofry, Jordan, Jordan, Jordan, Joughin, Joughin, Kate Winter, Kenichi Matsuoka, Mouginot, Neil Ross, Ng, Paxman, Paxman, Peters, Pingree, Pollard, René Forsberg, Retzlaff, Rignot, Rignot, Rose, Ross, Ross, Scheuchl, Siegert, Stokes, Studinger, Tania G. Casal, Tom A. Jordan, Vaughan, Wel, Winter, Young   +50 more
core   +3 more sources

Thermal controls on ice stream shear margins

Journal of Glaciology, 2021
Ice stream discharge responds to a balance between gravity, basal friction and lateral drag. Appreciable viscous heating occurs in shear margins between ice streams and adjacent slow-moving ice ridges, altering the temperature-dependent viscosity ...
Pierce Hunter, Colin Meyer, Brent Minchew, Marianne Haseloff, Alan Rempel   +4 more
doaj   +1 more source

Subtemperate sliding reduces periodicity of ice stream temporal variability in a simple model

Journal of Glaciology
Understanding the formation and evolution of fast flowing ice streams is essential to projecting the response of ice sheets to climate forcings. Slow-flowing or stagnant ice streams can slide at low velocities over a bed that is below the bulk melting ...
Logan Elliott Mann, Colin Meyer, Alexander Robel, Elisa Mantelli   +3 more
doaj   +1 more source

Treatment of the ice-shelf backpressure and buttressing in two horizontal dimensions

Journal of Glaciology
The ice discharge from the grounded parts of marine ice sheets into the ocean is modulated by their floating extensions – ice shelves. The ice-shelf impact on the grounded ice is typically described as ‘backpressure’ or ‘buttressing’.
Olga Sergienko
doaj   +1 more source