Results 21 to 30 of about 1,196 (236)

Dark ice dynamics of the south-west Greenland Ice Sheet [PDF]

open access: yesThe Cryosphere, 2017
Runoff from the Greenland Ice Sheet (GrIS) has increased in recent years due largely to changes in atmospheric circulation and atmospheric warming. Albedo reductions resulting from these changes have amplified surface melting.
A. J. Tedstone   +7 more
doaj   +1 more source

Modelling intra-annual dynamics of a major marine-terminating Arctic glacier [PDF]

open access: yes, 2017
Significant intra-annual variability in flow rates of tidewater-terminating Arctic glaciers has been observed in recent years. These changes may result from oceanic and/or atmospheric forcing through (1) perturbations at the terminus, such as enhanced ...

core   +1 more source

Surge-type glaciers in Kalaallit Nunaat (Greenland): distribution, temporal patterns and climatic controls

open access: yesJournal of Glaciology, 2023
We present the first systematic inventory of surge-type glaciers for the whole of Greenland compiled from published datasets and multitemporal satellite images and digital elevation models.
Harold Lovell   +6 more
doaj   +1 more source

Distribution of soil nitrogen and nitrogenase activity in the forefield of a High Arctic receding glacier

open access: yesAnnals of Glaciology, 2018
Glaciers retreating in response to climate warming are progressively exposing primary mineral substrates to surface conditions. As primary production is constrained by nitrogen (N) availability in these emerging ecosystems, improving our understanding of
Thomas Turpin-Jelfs   +5 more
doaj   +1 more source

Subglacial drainage processes at a High Arctic polythermal valley glacier [PDF]

open access: yes, 2005
Dye-tracer experiments undertaken over two summer melt seasons at polythermal John Evans Glacier, Ellesmere Island, Canada, were designed to investigate the character of the subglacial drainage system and its evolution over a melt season. In both summers,
Nienow, Peter W.   +5 more
core   +1 more source

Environmental factors influencing diatom communities in Antarctic cryoconite holes

open access: yesEnvironmental Research Letters, 2013
Cryoconite holes are ice-bound habitats that can act as refuges for aquatic and terrestrial microorganisms on glacier surfaces. In the McMurdo Dry Valleys of Antarctica, these holes are often capped by an ice lid that prevents the exchange of material ...
L F Stanish   +4 more
doaj   +1 more source

Drivers of Atmosphere-Ocean CO2 Flux in Northern Norwegian Fjords

open access: yesFrontiers in Marine Science, 2021
High-latitude fjords and continental shelves are shown to be sinks for atmospheric CO2, yet large spatial-temporal variability and poor regional coverage of sea-air CO2 flux data, especially from fjord systems, makes it difficult to scale our knowledge ...
Nerea J. Aalto   +6 more
doaj   +1 more source

Fifty years of meteo-glaciological change in Toll Glacier, Bennett Island, De Long Islands, Siberian Arctic

open access: yesPolar Science, 2014
AbstractRapid environmental change has been observed in the De Long Islands, Siberian Arctic, where warming has extensively occurred over the area. To quantitatively evaluate glaciological changes since the 1980s, the climate, mass balance, and the equilibrium line altitude (ELA) of Toll Glacier on Bennett Island were analyzed.
Konya, Keiko   +3 more
openaire   +1 more source

Opportunities for geomorphological and glaciological research from the Arctic-wide high resolution ArcticDEM

open access: yes, 2022
The ArcticDEM presents an interesting opportunity for research. By uniting knowledge and methods from geomorphometry and glaciology, this vast data source can help reconstructing features such as eskers, which are found in beds of paleo-ice sheets. This in turn can contribute to a deeper understanding and more accurate models of glacier dynamics. Using
openaire   +2 more sources

Aldegondabreen glacier change since 1910 from structure-from-motion photogrammetry of archived terrestrial and aerial photographs: utility of a historic archive to obtain century-scale Svalbard glacier mass losses

open access: yesJournal of Glaciology, 2021
Photogrammetric reconstructions of the Aldegondabreen glacier on Svalbard from 17 archival terrestrial oblique photographs taken in 1910 and 1911 reveal a past volume of 1373.7 ± 78.2 · 106 m3; almost five times greater than its volume in 2016 ...
Erik Schytt Holmlund
doaj   +1 more source

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