Results 51 to 60 of about 145,942 (141)

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

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

Fracture and Calving Front Evolution: A Case Study of Fimbul Ice Shelf, Antarctica

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT This study combines historical records, satellite remote sensing data, and inverse modelling to investigate crack formation and calving front evolution of the Fimbul Ice Shelf, Antarctica. Historical maps from the 1950s, together with satellite imagery from 1970s–2026, are used to reconstruct calving‐front positions and track the evolution of ...
Angelika Humbert, Lea‐Sophie Höyns, Sebastian Skatulla, Moreblessings Shoko, Patroba Odera, Alex Yumbu, Bhooshay Dookee, Dana Floricioiu, Rabea Sondershaus, Ralf Müller   +9 more
wiley   +1 more source

Simulating jökulhlaups from an ice-marginal lake within a 2D model of subglacial drainage and basal sliding [PDF]

The Cryosphere
Ice-marginal lakes are an increasingly common feature of glacierised landscapes, and their sudden drainage beneath glaciers (a jökulhlaup) can threaten downstream communities and infrastructure.
A. J. Hepburn, S. Buzzard, A. J. Sole, S. J. Livingstone, F. Ng, M. Morlighem, E. A. Bagshaw, C. Clason, L. Craw, C. F. Dow, S. Doyle, J. Hawkins, M. Peacey, R. Storrar   +13 more
doaj   +1 more source

Depositional and Hydrological Relationships Between Buried Dead Ice and the Active Layer in the McMurdo Dry Valleys, Antarctica: A Study of Sediment Geochemistry and Cation Concentrations

Permafrost and Periglacial Processes, Volume 37, Issue 4, Page 725-752, October/December 2026.
ABSTRACT The McMurdo Dry Valleys, the largest ice‐free region in Antarctica, are home to a cold‐desert hydrologic system of glaciers, snowbanks, streams, and lakes. Freshwater is also stored as dead glacial ice, which is poorly constrained in terms of ion concentrations and interactions with both in situ and overlying sediments.
Matthew C. Witscheber, Kate M. Swanger
wiley   +1 more source

Quantifying the Surface Deformation of Pingos on the Alaskan North Slope Using Interferometric Synthetic Aperture Radar (InSAR)

Permafrost and Periglacial Processes, Volume 37, Issue 4, Page 682-691, October/December 2026.
ABSTRACT Pingos are large mounds with cores formed of intrusive ice that form in periglacial landscapes. These ice structures can form in regions of discontinuous permafrost, commonly as hydraulic or open‐system pingos, or in locations of continuous permafrost, commonly as hydrostatic or closed‐system pingos.
Venezia M. Follingstad, Roger J. Michaelides, Matthew R. Siegfried, Tyler M. Meng, John Bradford, Kynan H. G. Hughson, Alexia R. Kubas, Andrew Mullen, Enrica Quartini, Austin Routt, Hanna G. Sizemore, Andrei Swidinsky, Britney E. Schmidt   +12 more
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

Rapid Increase in Geogenic CO2 Emissions from Antarctic Permafrost

Global Biogeochemical Cycles, Volume 40, Issue 10, October 2026.
Abstract Thawing permafrost can amplify climate change by releasing previously stored carbon, but observations of this feedback come mainly from the Arctic. Ice‐free Antarctic terrains are generally regarded as minor CO2 sources, although sub‐permafrost brines and deep carbon reservoirs may support localized geogenic degassing.
L. Ruggiero, A. Sciarra, F. Florindo, L. Davidson, J. Beagley, C. Berquist, G. Wilson   +6 more
wiley   +1 more source

Recovery Ice Stream subglacial hydrology simulation

, 2018
These data are outputs from GlaDS subglacial hydrology model applied to Recovery Ice Stream, East Antarctica. These outputs are used to analyse subglacial lake growth and drainage rates along with channel growth and variability in water pressure.  
Dow, Christine (4964923), Werder, Mauro (4964920), Dow, Christine, Werder, Mauro   +3 more
core   +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