Results 21 to 30 of about 26,495 (287)

Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study

Environmental Research Letters, 2021
Recent observations indicate that two cryospheric components, namely the Antarctic sea ice and ice shelf over the Southern Ocean, have been changing over the decades. Here we analyze results from an ocean–sea ice–ice shelf model to examine variability in
Kazuya Kusahara
doaj   +1 more source

Ross ice shelf vibrations [PDF]

Geophysical Research Letters, 2015
AbstractBroadband seismic stations were deployed across the Ross Ice Shelf (RIS) in November 2014 to study ocean gravity wave‐induced vibrations. Initial data from three stations 100 km from the RIS front and within 10 km of each other show both dispersed infragravity (IG) wave and ocean swell‐generated signals resulting from waves that originate in ...
Bromirski, P. D, Diez, A., Gerstoft, P., Stephen, R. A, Bolmer, T., Wiens, D. A, Aster, R. C, Nyblade, A.   +7 more
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Bathymetric and oceanic controls on Abbot Ice Shelf thickness and stability [PDF]

The Cryosphere, 2014
Ice shelves play key roles in stabilizing Antarctica's ice sheets, maintaining its high albedo and returning freshwater to the Southern Ocean. Improved data sets of ice shelf draft and underlying bathymetry are important for assessing ocean–ice ...
J. R. Cochran, S. S. Jacobs, K. J. Tinto, R. E. Bell   +3 more
doaj   +1 more source

Ice shelf fracture parameterization in an ice sheet model [PDF]

The Cryosphere, 2017
Abstract. Floating ice shelves exert a stabilizing force onto the inland ice sheet. However, this buttressing effect is diminished by the fracture process, which on large scales effectively softens the ice, accelerating its flow, increasing calving, and potentially leading to ice shelf breakup.
Liyun Zhao, Sainan Sun, Sainan Sun, Stephen Cornford, Rupert Gladstone, John C. Moore, John C. Moore   +6 more
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Ice Shelf Water Structure Beneath the Larsen C Ice Shelf in Antarctica

Geophysical Research Letters, 2023
AbstractUnderstanding ice shelf water (ISW) structure is crucial for studying the basal melting of ice shelves. In this study, we performed large‐eddy simulation experiments to assess ISW structure and basal melt patterns under different current velocity scenarios observed in the Larsen C ice shelf, Antarctica.
Ji Sung Na, Peter E. D. Davis, Byeong‐Hoon Kim, Emilia Kyung Jin, Won Sang Lee   +4 more
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The complex basal morphology and ice dynamics of the Nansen Ice Shelf, East Antarctica [PDF]

The Cryosphere
Ice shelf dynamics and morphology play an important role in the stability of floating bodies of ice by driving fracturing that can lead to calving, in turn impacting the ability of the ice shelf to buttress upstream grounded ice. Following a 2016 calving
C. F. Dow, D. Mueller, P. Wray, D. Friedrichs, D. Friedrichs, A. L. Forrest, A. L. Forrest, J. B. McInerney, J. B. McInerney, J. Greenbaum, D. D. Blankenship, C. K. Lee, W. S. Lee   +12 more
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The Ronne Ice Shelf survived the last interglacial. [PDF]

Nature
Abstract The fate of the West Antarctic Ice Sheet (WAIS)1 is the largest cause of uncertainty in long-term sea-level projections. In the last interglacial (LIG) around 125,000 years ago, data suggest that sea level was several metres higher than today2–4, and required a significant contribution from Antarctic ice loss, with WAIS usually ...
Wolff EW, Mulvaney R, Grieman MM, Hoffmann HM, Humby J, Nehrbass-Ahles C, Rhodes RH, Rowell IF, Sime LC, Fischer H, Stocker TF, Landais A, Parrenin F, Steig EJ, Dütsch M, Golledge NR.   +15 more
europepmc   +9 more sources

Past ice sheet–seabed interactions in the northeastern Weddell Sea embayment, Antarctica [PDF]

The Cryosphere, 2020
The Antarctic ice sheet extent in the Weddell Sea embayment (WSE) during the Last Glacial Maximum (LGM; ca. 19–25 calibrated kiloyears before present, ka cal BP) and its subsequent retreat from the shelf are poorly constrained, with two ...
J. E. Arndt, J. E. Arndt, R. D. Larter, C.-D. Hillenbrand, S. H. Sørli, M. Forwick, J. A. Smith, L. Wacker   +7 more
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Ice Island Calvings and Ice Shelf Changes, Milne Ice Shelf and Ayles Ice Shelf, Ellesmere Island, N.W.T. [PDF]

ARCTIC, 1986
Analysis of vertical air photographs taken in 1959 and 1974 reveals that a total of 48 sq km, involving 3.3 cubic km, of ice calved from Milne and Ayles ice shelves between July 1959 and July 1974. In addition, Ayles Ice Shelf moved to about 5 km out of Ayles Fiord. It still occupied this exposed position in July 1984. The ice losses and movements have
openaire   +2 more sources

Modelling the influence of marine ice on the dynamics of an idealised ice shelf

Journal of Glaciology, 2023
Understanding the dynamic behaviour of ice shelves, specifically the controls on their ability to buttress the flow of ice into the ocean, is critical for predicting future ice-sheet contributions to sea level rise.
Lisa Craw, Felicity S. McCormack, Sue Cook, Jason Roberts, Adam Treverrow   +4 more
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