Results 81 to 90 of about 2,943 (230)

Characterization of seismicity from different glacial bed types: machine learning classification of laboratory stick-slip acoustic emissions

Annals of Glaciology
Subglacial seismicity presents the opportunity to monitor inaccessible glacial beds at the epicentral location and time. Glaciers can be underlain by rock or till, a first order control on bed mechanics.
Seth Saltiel, Nathan Groebner, Theresa Sawi, Christine McCarthy   +3 more
doaj   +1 more source

Modeling saline-fluid flow through subglacial channels [PDF]

The Cryosphere
Subglacial hydrological systems impact ice dynamics, biological environments, and sediment transport. Previous numerical models of channelized subglacial flow have focused on freshwater in temperate ice without considering variable fluid chemistry and ...
A. Jenson, A. Jenson, M. Skidmore, L. Beem, M. Truffer, S. McCalla   +5 more
doaj   +1 more source

Towards an ‘absolute’ timing of biostratigraphic and environmental phases from the Saalian late glacial to the Weichselian pleniglacial in central Europe—Insights from a lacustrine succession in Lichtenberg, northern Germany

Boreas, EarlyView.
Palynological records are central to the biostratigraphic subdivision of the Late Pleistocene in central Europe. Yet many interglacial and interstadial phases—such as the Eemian, Brörup and Odderade—remain only poorly constrained in time due to limited numerical dating.
Michael Hein, Thomas Kasper, Alexis Badai Samudra, Martin Theuerkauf, Markus Lothar Fischer, Neda Rahimzadeh, Maria Sekar Proborukmi, Sonja Rigterink, Agnieszka Gruszczyńska, Christian Zeeden, Simon Parfitt, David John Horne, Lucy Roberts, Dustin White, Lisa Brogmus, Hans von Suchodoletz, Tobias Lauer, Marcel Weiss, David Colin Tanner, Brigitte Urban   +19 more
wiley   +1 more source

Microbiology: lessons from a first attempt at Lake Ellsworth

, 2015
During the attempt to directly access, measure and sample Subglacial Lake Ellsworth in 2012–2013, we conducted microbiological analyses of the drilling equipment, scientific instrumentation, field camp and natural surroundings.
Magiopoulos, Iordanis, Mowlem, Matt, Pearce, David, Woodward, John, Tranter, Martyn, Siegert, Martin, Holt, Giles   +6 more
core   +1 more source

Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet [PDF]

, 2011
Peer ...
Steven Palmer, Peter Nienow, Mair, Douglas, Mair, D., Wadham, J., S., Palmer, Douglas Mair, Ian Bartholomew, Sole, Andrew, Andrew Sole, Thomas Cowton, T., Cowton, Nienow, Peter, Jemma Wadham, Palmer, Steven, Wadham, JL, Cowton, Thomas, Bartholomew, Ian, Sole, A., Palmer, S., P., Nienow, Wadham, Jemma, Cowton, T., Bartholomew, I., A., Sole, Nienow, P.   +25 more
core   +1 more source

Reactivation of a Subglacial Channel Around the Grounding Zone of Roi Baudouin Ice Shelf, Antarctica

Geophysical Research Letters
Subglacial water beneath the Antarctic Ice Sheet is often funneled via subglacial channels, which inject freshwater into ice‐shelf cavities where it interacts with ocean water.
Yan Zhou, Steven Franke, Thomas Kleiner, Reinhard Drews, Angelika Humbert, Daniela Jansen, Daniel Steinhage, Olaf Eisen   +7 more
doaj   +1 more source

Meteoric 10Be as a tracer of subglacial processes and interglacial surface exposure in Greenland [PDF]

Quaternary Science Reviews, 2018
Abstract In order to test whether sediment emerging from presently glaciated areas of Greenland was exposed near or at Earth's surface during previous interglacial periods, we measured the rare isotope 10Be contained in grain coatings of sediment collected at five ice marginal sites. Such grain coatings contain meteoric 10Be (10Bemet), which forms in
Joseph A. Graly, Lee B. Corbett, Paul R. Bierman, Andrea Lini, Thomas A. Neumann   +4 more
openaire   +1 more source

Coarse Sediment Transport in a Near‐Terminus Subglacial Channel

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract We present the first large‐sample, spatially resolved measurements of coarse sediment transport within a subglacial meltwater channel. We released 324 radio‐tagged pebbles into a near‐terminus channel of Glacier d’Otemma, Switzerland, and monitored their positions through 10–50 m of ice during the mid to late melt season.
Matt Jenkin, Davide Mancini, Floreana Miesen, Bryn Hubbard, Margaux Hofmann, Stuart N. Lane   +5 more
wiley   +1 more source

Quantifying subglacial roughness and its link to glacial geomorphology and ice speed [PDF]

, 2013
The shape of subglacial bed topography, termed its roughness, is a recognised control on basal ice-flow. Although glaciologists have observed patterns of variations in ice speed over beds with different roughness values, the strength of this relationship
PRESCOTT, PHILIP,WILLIAM
core  

Warm Surface Waters Dominate Melting of the Denman‐Shackleton Ice Shelf System

Journal of Geophysical Research: Oceans, Volume 131, Issue 7, July 2026.
Abstract The ocean dynamics controlling the melting of the Denman‐Shackleton ice shelf system are investigated using a high‐resolution regional ocean‐sea ice‐ice shelf model. Our results show that basal meltwater production exhibits strong seasonal variability, driven by the ocean heat supply toward the ice shelf system, and occurs through two distinct
Yuhang Liu, Maxim Nikurashin, Beatriz Peña‐Molino, Paul Spence, Laura Herraiz‐Borreguero   +4 more
wiley   +1 more source