Results 21 to 30 of about 566 (178)

Environmental factors influencing diatom communities in Antarctic cryoconite holes

Environmental 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, E A Bagshaw, D M McKnight, A G Fountain, M Tranter   +4 more
doaj   +1 more source

Drivers of Atmosphere-Ocean CO2 Flux in Northern Norwegian Fjords

Frontiers 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, Nerea J. Aalto, Karley Campbell, Karley Campbell, Hans C. Eilertsen, Hans C. Bernstein, Hans C. Bernstein   +6 more
doaj   +1 more source

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

Polar 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, Kadota, Tsutomu, Yabuki, Hironori, Ohata, Tetsuo   +3 more
openaire   +1 more source

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

, 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

Journal 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

Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard

Journal of Glaciology, 2023
We describe the annual pattern of frontal ablation driven by submarine melting mechanisms at the Hansbreen terminus: these are reflected in the intensity and spatial distribution of calving events.
Michał Ciepły, Dariusz Ignatiuk, Mateusz Moskalik, Jacek Jania, Bartłomiej Luks, Oskar Głowacki, Kacper Wojtysiak   +6 more
doaj   +1 more source

Quantifying user variability in the traditional X‐ray ice‐rafted‐debris counting technique

Journal of Quaternary Science, EarlyView.
ABSTRACT The flux of icebergs is most commonly constrained in the palaeo‐record by manually counting gravel clasts in sediment core X‐ray images—a trusted method in Quaternary science and palaeoceanography for nearly 40 years. In this study, we explore the reproducibility (user consistency and between‐user variability) of the traditional clast‐counting
Neil McDonald, Tom Bradwell, S. Louise Callard, Jaime L. Toney   +3 more
wiley   +1 more source

Massive subsurface ice formed by refreezing of ice-shelf melt ponds

Nature Communications, 2016
The influence of surface ponding on the interior of ice shelves is currently unknown. Here, the authors combine surface and borehole geophysics on the Larsen C Ice Shelf, Antarctica, with remote sensing and modelling and show how pond refreezing ...
Bryn Hubbard, Adrian Luckman, David W. Ashmore, Suzanne Bevan, Bernd Kulessa, Peter Kuipers Munneke, Morgane Philippe, Daniela Jansen, Adam Booth, Heidi Sevestre, Jean-Louis Tison, Martin O’Leary, Ian Rutt   +12 more
doaj   +1 more source

Geochronological reconstruction of the Lateglacial deglaciation in the Arve Valley (Northern French Alps)

Journal of Quaternary Science, EarlyView.
ABSTRACT The timing and spatial patterns of glaciers retreat in the Northern French Alps during the Lateglacial (19.0–11.7 ka) remain debated, reflecting discrepancies among available chronological data sets. The complex interactions between major glaciers, such as the Rhône and Arve glaciers to the north and the Isère glacier to the south, represent a
Quentin Portal, Christian Crouzet, Jean‐François Buoncristiani, Julien Carcaillet   +3 more
wiley   +1 more source

Modelling spatial patterns of near-surface air temperature over a decade of melt seasons on McCall Glacier, Alaska

Journal of Glaciology, 2020
We examine the spatial patterns of near-surface air temperature (Ta) over a melting glacier using a multi-annual dataset from McCall Glacier, Alaska. The dataset consists of a 10-year (2005–2014) meteorological record along the glacier centreline up to ...
Patrick Troxler, Álvaro Ayala, Thomas E. Shaw, Matt Nolan, Ben W. Brock, Francesca Pellicciotti   +5 more
doaj   +1 more source