Results 1 to 10 of about 2,982 (205)

Basal crevasses in Larsen C Ice Shelf and implications for their global abundance [PDF]

The Cryosphere, 2012
Basal crevasses extend upwards from the base of ice bodies and can penetrate more than halfway through the ice column under conditions found commonly on ice shelves.
A. Luckman, D. Jansen, B. Kulessa, E. C. King, P. Sammonds, D. I. Benn   +5 more
doaj   +3 more sources

Radio-echo sounding and waveform modeling reveal abundant marine ice in former rifts and basal crevasses within Crary Ice Rise, Antarctica [PDF]

Journal of Glaciology, 2021
Crary Ice Rise formed after the Ross Ice Shelf re-grounded ~1 kyr BP. We present new ice-penetrating radar data from two systems operating at center frequencies of 7 and 750 MHz that confirm the ice rise is composed of a former ice shelf buried by ...
Trevor R. Hillebrand, Howard Conway, Michelle Koutnik, Carlos Martín, John Paden, J. Paul Winberry   +5 more
doaj   +2 more sources

A non-local continuum poro-damage mechanics model for hydrofracturing of surface crevasses in grounded glaciers

Journal of Glaciology, 2020
Hydrofracturing can enhance the depth to which crevasses propagate and, in some cases, allow full depth crevasse penetration and iceberg detachment.
Ravindra Duddu, Stephen Jiménez, Jeremy Bassis   +2 more
doaj   +1 more source

Automatic mapping and geomorphometry extraction technique for crevasses in geodetic mass-balance calculations at Haig Glacier, Canadian Rockies

Journal of Glaciology, 2019
Finely resolved geodetic data provide an opportunity to assess the extent and morphology of crevasses and their change over time. Crevasses have the potential to bias geodetic measurements of elevation and mass change unless they are properly accounted ...
Marzieh Foroutan, Shawn J. Marshall, Brian Menounos   +2 more
doaj   +1 more source

Tides modulate crevasse opening prior to a major calving event at Bowdoin Glacier, Northwest Greenland

Journal of Glaciology, 2020
Retreat of calving glaciers worldwide has contributed substantially to sea-level rise in recent decades. Mass loss by calving contributes significantly to the uncertainty of sea-level rise projections.
Eef van Dongen, Guillaume Jouvet, Andrea Walter, Joe Todd, Thomas Zwinger, Izumi Asaji, Shin Sugiyama, Fabian Walter, Martin Funk   +8 more
doaj   +1 more source

Fifty-five years of Russian radio-echo sounding investigations in Antarctica

Annals of Glaciology, 2020
Russian (former Soviet) systematic studies of Antarctica by radio-echo sounding (RES) and ground-penetrating radar technique (GPR) were commenced in 1964.
Sergey Popov
doaj   +1 more source

Detection of crevassed areas with minimum geometric information: Vernagtferner case study

Journal of Glaciology, 2023
Crevasses pose severe risks for mountaineers and field glaciologists. Smaller cracks between 0.5 and 2 m are still dangerous, but often not visible in medium resolution satellite imagery.
Theresa Dobler, Wilfried Hagg, Christoph Mayer   +2 more
doaj   +1 more source

Crevasse initiation and history within the McMurdo Shear Zone, Antarctica

Journal of Glaciology, 2019
While large-scale observations of intensified fracture and rifting can be observed through remote-sensing observations, understanding crevasse initiation may best be achieved with small-scale observations in which crevasses can be directly observed. Here
Lynn Kaluzienski, Peter Koons, Ellyn Enderlin, Gordon Hamilton, Zoe Courville, Steven Arcone   +5 more
doaj   +1 more source

The spatial distribution of potholes in Uusimaa, southern Finland [PDF]

Bulletin of the Geological Society of Finland, 1996
It has been assumed, on the basis of the distribution of potholes in the bedrock near eskers, that they were eroded by subglacial meltwaters connected with the formation of eskers.
T. Jantunen
doaj   +1 more source

Controls on Ice Cliff Distribution and Characteristics on Debris‐Covered Glaciers

Geophysical Research Letters, 2023
Ice cliff distribution plays a major role in determining the melt of debris‐covered glaciers but its controls are largely unknown. We assembled a data set of 37,537 ice cliffs and determined their characteristics across 86 debris‐covered glaciers within ...
Marin Kneib, Catriona L. Fyffe, Evan S. Miles, Shayna Lindemann, Thomas E. Shaw, Pascal Buri, Michael McCarthy, Boris Ouvry, Andreas Vieli, Yota Sato, Philip D. A. Kraaijenbrink, Chuanxi Zhao, Peter Molnar, Francesca Pellicciotti   +13 more
doaj   +1 more source