Results 21 to 30 of about 946 (136)

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Crevasse advection increases glacier calving

open access: yesJournal of Glaciology, 2022
Iceberg calving, the process where icebergs detach from glaciers, remains poorly understood. Moreover, few parameterizations of the calving process can easily be integrated into numerical models to accurately capture observations, resulting in large ...
Brandon Berg, Jeremy Bassis
doaj   +1 more source

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

open access: yesJournal 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   +2 more
doaj   +1 more source

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Search and recovery of aircraft parts in ice-sheet crevasse fields using airborne and in situ geophysical sensors

open access: yesJournal of Glaciology, 2020
On 30 September 2017, an Air France Airbus A380-800 suffered a failure of its fourth engine while over Greenland. This failure resulted in the loss of the engine fan hub, fan blades and surrounding structure.
Kenneth D. Mankoff   +14 more
doaj   +1 more source

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

open access: yesBulletin 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

Automated detection and temporal monitoring of crevasses using remote sensing and their implications for glacier dynamics

open access: yesAnnals of Glaciology, 2016
Detailed studies on temporal changes of crevasses and their linkage with glacier dynamics are scarce in the Himalayan context. Observations of temporally changing surficial crevasse patterns and their orientations are suggestive of the processes that ...
Anshuman Bhardwaj   +3 more
doaj   +1 more source

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

open access: yesGeophysical 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   +13 more
doaj   +1 more source

Crevasse initiation and history within the McMurdo Shear Zone, Antarctica

open access: yesJournal 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   +5 more
doaj   +1 more source

Automated detection of basal icequakes and discrimination from surface crevassing

open access: yesAnnals of Glaciology, 2019
Icequakes at or near the bed of a glacier have the potential to allow us to investigate the interaction of ice with the underlying till or bedrock. Understanding this interaction is important for studying basal sliding of glaciers and ice streams, a ...
Thomas S. Hudson   +3 more
doaj   +1 more source

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