Results 61 to 70 of about 57,626 (157)

First description of subglacial megalineations from the late Paleozoic ice age in southern Africa.

PLoS ONE, 2019
We identify late Paleozoic ice age (LPIA) subglacial megalineations from field and geospatial imagery of the Twyfelfontein area of northern Namibia, and present the results of a geomorphometric analysis of those data.
Graham D Andrews, Andrew T McGrady, Sarah R Brown, Shannon M Maynard   +3 more
doaj   +1 more source

Accelerating ice flow at the onset of the Northeast Greenland Ice Stream. [PDF]

Nat Commun, 2022
Grinsted A, Hvidberg CS, Lilien DA, Rathmann NM, Karlsson NB, Gerber T, Kjær HA, Vallelonga P, Dahl-Jensen D.   +8 more
europepmc   +1 more source

Crevasse refreezing and signatures of retreat observed at Kamb Ice Stream grounding zone. [PDF]

Nat Geosci, 2023
Lawrence JD, Washam PM, Stevens C, Hulbe C, Horgan HJ, Dunbar G, Calkin T, Stewart C, Robinson N, Mullen AD, Meister MR, Hurwitz BC, Quartini E, Dichek DJG, Spears A, Schmidt BE.   +15 more
europepmc   +1 more source

Extensive inland thinning and speed-up of Northeast Greenland Ice Stream. [PDF]

Nature, 2022
Khan SA, Choi Y, Morlighem M, Rignot E, Helm V, Humbert A, Mouginot J, Millan R, Kjær KH, Bjørk AA.   +9 more
europepmc   +1 more source

Migratory earthquake precursors are dominant on an ice stream fault. [PDF]

Sci Adv, 2021
Barcheck G, Brodsky EE, Fulton PM, King MA, Siegfried MR, Tulaczyk S.   +5 more
europepmc   +1 more source

Ice-Shelf Response to Ice-stream Discharge Fluctuations: III. The Effects of Ice-stream Imbalance on the Ross Ice Shelf, Antarctica [PDF]

Journal of Glaciology, 1989
AbstractA numerical simulation of the Ross Ice Shelf, Antarctica, in which discharge from Ice Streams A-E is changed suddenly between extreme states, is used to investigate ice-shelf thickness and flow anomalies generated by ice-stream transience.
openaire   +1 more source

Influence of the Gulf Stream on the Barents Sea ice retreat and Eurasian coldness during early winter

Environmental Research Letters, 2014
Abnormal sea-ice retreat over the Barents Sea during early winter has been considered a leading driver of recent midlatitude severe winters over Eurasia. However, causal relationships between such retreat and the atmospheric circulation anomalies remains
Kazutoshi Sato, Jun Inoue, Masahiro Watanabe   +2 more
doaj   +1 more source

Topographic and geologic controls on the Northeast Greenland Ice Stream

Annals of Glaciology
The Northeast Greenland Ice Stream (NEGIS) is an elongated feature extending ∼600 km into the interior of the Greenland Ice Sheet. Here, we investigate detailed subglacial topography along the length of the NEGIS to ascertain the characteristics of the ...
Charlotte M. Carter, Steven Franke, Guy J.G. Paxman, Stewart S.R. Jamieson, Michael J. Bentley, Daniela Jansen, John Paden, Olaf Eisen   +7 more
doaj   +1 more source

“Ice streams” [PDF]

Polar Record, 1954
openaire   +2 more sources

Thermal Weakening, Convergent Flow, and Vertical Heat Transport in the Northeast Greenland Ice Stream Shear Margins

Geophysical Research Letters, 2019
Ice streams are bounded by abrupt transitions in speed called shear margins. Some shear margins are fixed by subglacial topography, but others are thought to be self‐organizing, evolving by thermal feedback to ice viscosity and basal drag which govern ...
N. Holschuh, D. A. Lilien, K. Christianson   +2 more
doaj   +1 more source