Results 41 to 50 of about 917,323 (294)

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
openaire   +3 more sources

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
doaj   +1 more source

Thermal Responses to Antarctic Ice Shelf Melt in an Eddy-Rich Global Ocean–Sea Ice Model

Journal of Climate, 2020
The response of near-Antarctic waters to freshening by increased glacial melt is investigated using a high-resolution (0.1°) global ocean–sea ice model with realistic Antarctic water-mass properties.
Ruth Moorman, A. Morrison, A. Hogg
semanticscholar   +1 more source

Blocking a wave: Frequency band gaps in ice shelves with periodic crevasses [PDF]

, 2011
We assess how the propagation of high-frequency elastic-flexural waves through an ice shelf is modified by the presence of spatially periodic crevasses.
Ashcroft, Chou, Douglas R. MacAyeal, Jason M. Amundson, Julian Freed-Brown, Landau, Sheng, Van der Veen, Van der Veen, Wendy W. Zhang   +9 more
core   +2 more sources

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
openaire   +8 more sources

The origin of green icebergs in Antarctica [PDF]

, 1992
A comparison of samples from a translucent green iceberg with a core from the Ronne Ice Shelf revealed an excellent agreement in isotopic composition, crystal structure, and incorporated sediment particles.
Amos, Betts, Budd, Determann, Determann, Dieckmann, Dieckmann, Engelhardt, G. Dieckmann, Garrison, H. Hellmer, H. Oerter, Hellmer, J. Kipfstuhl, Jacobs, Jeffries, Jenkins, Kempema, Kipfstuhl, Kottmeier, Lee, Lewis, Morgan, Moulton, Oerter, Robin, Robin, Souchez, Swithinbank, Thomas, Thyssen, Vinje, W. Graf, Weeks, Zotikov   +34 more
core   +1 more source

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

Ekström Ice Shelf, Antarctica [PDF]

Annals of Glaciology, 1988
In 1980–81, 1983–84 and 1985–86 airborne surveys with an electromagnetic reflection (EMR) system were made of Ekström Ice Shelf, Antarctica. The EMR data were supplemented by measurements of surface elevation with radar altimetry during flights at a constant pressure altitude.
F. Thyssen, Klaus Grosfeld
openaire   +2 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
doaj   +1 more source