Results 11 to 20 of about 934 (207)

Englacial drainage structures in an East Antarctic outlet glacier

open access: yesJournal of Glaciology, 2020
Ground-penetrating radar data acquired in the 2016/17 austral summer on Sørsdal Glacier, East Antarctica, provide evidence for meltwater lenses within porous surface ice that are conceptually similar to firn aquifers observed on the Greenland Ice Sheet ...
Thomas Schaap   +5 more
doaj   +1 more source

Multi-decadal basal slip enhancement at Saskatchewan Glacier, Canadian Rocky Mountains

open access: yesJournal of Glaciology, 2023
Glacier motion responds dynamically to changing meltwater inputs, but the multi-decadal response of basal sliding to climate remains poorly constrained due to its sensitivity across multiple timescales.
Nathan T. Stevens   +5 more
doaj   +1 more source

Radio-echo soundings on Icelandic temperate glaciers: history of techniques and findings

open access: yesAnnals of Glaciology, 2020
Since the mid-1970s radio-echo soundings have been conducted on Iceland's temperate glaciers. Since then, low-frequency radar technology has furthered the study of most of the island's ice caps.
Helgi Björnsson, Finnur Pálsson
doaj   +1 more source

Debris cover and surface melt at a temperate maritime alpine glacier: Franz Josef Glacier, New Zealand [PDF]

open access: yes, 2012
Melt rates on glaciers are strongly influenced by the presence of supraglacial debris, which can either enhance or reduce ablation relative to bare ice.
Brook, Martin S.   +5 more
core   +1 more source

Analysis of ice-sheet temperature profiles from low-frequency airborne remote sensing

open access: yesJournal of Glaciology, 2022
Ice internal temperature and basal geothermal heat flux (GHF) are analyzed along a study line in northwestern Greenland. The temperatures were obtained from a previously reported inversion of airborne microwave brightness-temperature spectra.
Kenneth C. Jezek   +4 more
doaj   +1 more source

Automating long-term glacier dynamics monitoring using single-station seismological observations and fuzzy logic classification: a case study from Spitsbergen

open access: yesJournal of Glaciology, 2017
Retreating glaciers are a consequence of a warming climate. Thus, numerous monitoring campaigns are being carried out to increase understanding of this on-going process.
W. GAJEK, J. TROJANOWSKI, M. MALINOWSKI
doaj   +1 more source

Contrasting geophysical signatures of a relict and an intact Andean rock glacier

open access: yesThe Cryosphere, 2022
Abstract. In semi-arid Chile, rock glaciers cover more surface area than glaciers and are potentially important water reserves. To understand their current and future hydrological role, it is necessary to characterize their internal structure (e.g. internal boundaries and ice, air, water and rock content).
G. de Pasquale   +5 more
openaire   +4 more sources

Sub-debris melt rates on southern Inylchek Glacier, central Tian Shan [PDF]

open access: yes, 2008
Melt rates of glacier surfaces are strongly influenced by the existence of a debris cover. Dependent on thickness and other physical parameters the debris layer can enhance or reduce ablation as compared to bare ice conditions.
Lambrecht, Astrid   +7 more
core   +1 more source

Maximizing friction in the erosion of glacial valleys

open access: yesJournal of Glaciology, 2020
The cross-sectional profile of a glacial valley can be obtained with a variational principle in which the friction against the valley walls and the glacier bed is extremized, subject to a Lagrangian constraint.
Valerio Faraoni
doaj   +1 more source

Towards the development of an automated electrical self-potential sensor of melt and rainwater flow in snow

open access: yesJournal of Glaciology, 2022
To understand snow structure and snowmelt timing, information about flows of liquid water within the snowpack is essential. Models can make predictions using explicit representations of physical processes, or through parameterization, but it is difficult
Alex Priestley   +5 more
doaj   +1 more source

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