Results 91 to 100 of about 708,716 (215)

Insights into glacial processes from micromorphology of silt-sized sediment [PDF]

The Cryosphere
Silt-rich meltwater plume deposits (MPDs) analyzed from marine sediment cores have elucidated relationships that are clearly connected, yet difficult to constrain, between subglacial hydrology, ice-marginal landforms, and grounding-zone retreat patterns ...
A. P. Lepp, L. E. Miller, J. B. Anderson, M. O'Regan, M. C. M. Winsborrow, J. A. Smith, C.-D. Hillenbrand, J. S. Wellner, L. O. Prothro, E. A. Podolskiy   +9 more
doaj   +1 more source

Hydrochemical Characteristics of Four Retreating Glacier Forefields Off the Coast of Admiralty Bay (King George Island, Maritime Antarctic): Diverse Sources of Metals and Metalloids

Land Degradation &Development, Volume 37, Issue 4, Page 1330-1352, 28 February 2026.
ABSTRACT This study examines the impact of geological, marine and anthropogenic sources on metal and metalloid concentrations in the forefields of four glaciers (Ecology, Sphinx, Tower and Windy) on King George Island, Antarctic. Water samples were collected at the beginning and end of the hydrological season (austral summer, December 2021 to February ...
Joanna Potapowicz, Krystyna Kozioł, Joanna Plenzler, Robert Józef Bialik, Justyna Dudek, Marcin Frankowski, Anetta Zioła‐Frankowska, Sara Lehmann‐Konera, Żaneta Polkowska   +8 more
wiley   +1 more source

Regional and Annual Variability in Subglacial Sediment Transport by Water for Two Glaciers in the Swiss Alps

Frontiers in Earth Science, 2018
Glaciers expel large amounts of water and sediments, and the discharge of both is influenced by glacier retreat. Because the majority of sediment originates subglacially, as opposed to proglacially, focus must be given to subglacial sediment discharge ...
Ian Delaney, Andreas Bauder, Mauro A. Werder, Daniel Farinotti, Daniel Farinotti   +4 more
doaj   +1 more source

Supplemental Material: Dynamic subglacial meltwater history archived in Antarctic subglacial lake sediments

<p>Sediment core descriptions, Kruskal-Wallis summary statistics, and mineral phase content from X-ray diffraction data tables.</p>
et al., Timothy D. Campbell
openaire   +1 more source

Deformation of Subglacial Sediments and its Implications (Abstract only) [PDF]

Annals of Glaciology, 1981
Field experiments have shown that unlithified sediments beneath a glacier may undergo strong shear deformation in response to the movement of the overlying glacier, and that much of the forward movement of the glacier may be contributed by this mechanism.
openaire   +1 more source

Actively evolving subglacial conduits and eskers initiate ice shelf channels at an Antarctic grounding line

Nature Communications, 2017
Ice-shelf channels are long curvilinear tracts of thin ice found on Antarctic ice shelves. Many of them originate near the grounding line, but their formation mechanisms remain poorly understood.
R. Drews, R. Drews, R. Drews, F. Pattyn, Ian Hewitt, Felix Ng, Sophie Berger, K. Matsuoka, V. Helm, Nicolas Bergeot, L. Favier, N. Neckel   +11 more
semanticscholar   +1 more source

Wet subglacial bedforms of the NE Greenland Ice Stream shear margins

Annals of Glaciology, 2019
We describe elongate, wet, subglacial bedforms in the shear margins of the NE Greenland Ice Stream and place some constraints on their formation. Lateral shear margin moraines have been observed across the previously glaciated landscape, but little is ...
Kiya L. Riverman, Sridhar Anandakrishnan, Richard B. Alley, Nicholas Holschuh, Christine F. Dow, Atsuhiro Muto, Byron R. Parizek, Knut Christianson, Leo E. Peters   +8 more
doaj   +1 more source

Subglacial water and sediment samplers [PDF]

Journal of Glaciology, 1991
Erik W. Blake, Garry K.C. Clarke
openaire   +1 more source

Topographic and geologic controls on the Northeast Greenland Ice Stream

Annals of Glaciology
The Northeast Greenland Ice Stream (NEGIS) is an elongated feature extending ∼600 km into the interior of the Greenland Ice Sheet. Here, we investigate detailed subglacial topography along the length of the NEGIS to ascertain the characteristics of the ...
Charlotte M. Carter, Steven Franke, Guy J.G. Paxman, Stewart S.R. Jamieson, Michael J. Bentley, Daniela Jansen, John Paden, Olaf Eisen   +7 more
doaj   +1 more source

Byrd Ice Core Debris Constrains the Sediment Provenance Signature of Central West Antarctica

Geophysical Research Letters
Provenance records from sediments deposited offshore of the West Antarctic Ice Sheet (WAIS) can help identify past major ice retreat, thus constraining ice‐sheet models projecting future sea‐level rise.
J. W. Marschalek, P.‐H. Blard, E. Sarigulyan, W. Ehrmann, S. R. Hemming, S. N. Thomson, C.‐D. Hillenbrand, K. Licht, J.‐L. Tison, L. Ardoin, F. Fripiat, C. S. Allen, Y. Marrocchi, M. J. Siegert, T. van deFlierdt   +14 more
doaj   +1 more source