Results 41 to 50 of about 546 (164)

Modelling subglacial fluvial sediment transport with a graph-based model, Graphical Subglacial Sediment Transport (GraphSSeT) [PDF]

The Cryosphere
A quantitative understanding of how sediment discharge from subglacial fluvial systems varies in response to glaciohydrological conditions is essential for understanding marine systems around Greenland and Antarctica and for interpreting sedimentary ...
A. R. A. Aitken, A. R. A. Aitken, I. Delaney, G. Pirot, G. Pirot, M. A. Werder, M. A. Werder   +6 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

Potential Warming‐Induced Changes in Stream Water Sources Between Proglacial and Non‐Glacial Streams, South‐Central Alaska

Hydrological Processes, Volume 40, Issue 8, August 2026.
Land cover and elevation are shown to influence the proportion of stream source waters across glacial and non‐glacial streams. Groundwater makes up a large proportion of both early season and late season flow in most glacial and non‐glacial streams, while the timing of snow and ice melt is driven by the presence or absence of a glacier within the ...
H. K. Richardson, A. J. Bergstrom, J. C. Koch, Z. A. Frederick, J. B. Shanley, E. H. Baker   +5 more
wiley   +1 more source

Modelling Future Evolution of the Antarctic Ice Sheet With Explainable Machine Learning

Journal of the Royal Society of New Zealand, Volume 56, Issue 4, August 2026.
The accelerating effects of climate change, particularly rising sea levels resulting from melting land ice, require accurate predictions of ice sheet dynamics. Traditional numerical models, such as the Parallel Ice Sheet Model (PISM), are widely used; however, they rely on simplifying assumptions and are computationally intensive, limiting their ...
Paula Maddigan, Bach Hoai Nguyen, Peter Yu Feng Siew, Bing Xue, Nicholas Golledge, Mengjie Zhang   +5 more
wiley   +1 more source

A confined–unconfined aquifer model for subglacial hydrology and its application to the Northeast Greenland Ice Stream [PDF]

The Cryosphere, 2018
Subglacial hydrology plays an important role in ice sheet dynamics as it determines the sliding velocity. It also drives freshwater into the ocean, leading to undercutting of calving fronts by plumes.
S. Beyer, S. Beyer, T. Kleiner, V. Aizinger, V. Aizinger, M. Rückamp, A. Humbert, A. Humbert   +7 more
doaj   +1 more source

Automatic Detection of Subglacial Water Bodies in the AGAP Region, East Antarctica, Based on Short-Time Fourier Transform

Remote Sensing, 2023
Subglacial water bodies are critical components in analyzing the instability of the Antarctic ice sheet. Their detection and identification normally rely on geophysical and remote sensing methods such as airborne radar echo sounding (RES), ground seismic,
Tong Hao, Liwen Jing, Jiashu Liu, Dailiang Wang, Tiantian Feng, Aiguo Zhao, Rongxing Li   +6 more
doaj   +1 more source

Distribution and dynamics of Greenland subglacial lakes

Nature Communications, 2019
Subglacial lakes can influence basal hydrology and ice flow in Antarctica, but are poorly constrained in Greenland. Here the authors provide the first ice sheet-wide inventory of subglacial lakes beneath GrIS, including 54 uncharted lakes.
J. S. Bowling, S. J. Livingstone, A. J. Sole, W. Chu   +3 more
doaj   +1 more source

Reconstructing subglacial lake activity with an altimetry-based inverse method

Journal of Glaciology, 2023
Subglacial lake water-volume changes produce ice-elevation anomalies that provide clues about water flow beneath glaciers and ice sheets. Significant challenges remain in the quantitative interpretation of these elevation-change anomalies because the ...
Aaron G. Stubblefield, Colin R. Meyer, Matthew R. Siegfried, Wilson Sauthoff, Marc Spiegelman   +4 more
doaj   +1 more source

Quantification of Heat and Salt Budgets in the Western Ross Ice Shelf Cavity and Polynya System

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract The Ross Ice Shelf Polynya (RISP) is one of the primary production sites of the High Salinity Shelf Water (HSSW), the precursor of Antarctic Bottom Water (AABW) that drives the lower limb of global meridional overturning circulation. Utilizing a multi‐platform historical data set gathered over the western Ross Sea continental shelf, this study
Chuning Wang, Zhaoru Zhang, Meng Zhou
wiley   +1 more source

Drainage and refill of an Antarctic Peninsula subglacial lake reveals an active subglacial hydrological network

, 2022
Abstract. The role of subglacial hydrological networks and subglacial lakes in modulating ice dynamics under the East and West Antarctic Ice Sheets is now relatively well understood. In contrast, little is known about subglacial water bodies under the Antarctic Peninsula Ice Sheet and how these are influencing glacier behaviour.
Dominic A. Hodgson, Tom A. Jordan, Teal R. Riley, Peter T. Fretwell   +3 more
openaire   +1 more source