Results 81 to 90 of about 1,622 (202)

Governance of the Exploration of Subglacial Antarctica

Frontiers in Environmental Science, 2018
Subglacial lakes, and their surrounding aqueous environments, are known to be viable yet extreme habitats for microbial life that may hold records of climate change spanning hundreds of thousands of years. Since the detection of Lake Vostok in 1996 plans
Martin John Siegert, Mahlon C. Kennicutt
doaj   +1 more source

The Glacial Legacy of the Geneva Basin: Morphology and implications of an intricate tunnel valley system revealed from 3D seismic data

Journal of Quaternary Science, Volume 41, Issue 5, Page 732-753, July 2026.
ABSTRACT Like other perialpine basins and glaciated margins, the Geneva Basin in SW Switzerland is characterised by buried tunnel valleys, which are elongated incisions widely attributed to subglacial meltwater erosion beneath continental ice sheets. However, an inclusive understanding of the geological control on the evolution of the glacial landscape
Ovie Emmanuel Eruteya, Emna Meftah, Andrea Moscariello   +2 more
wiley   +1 more source

Using Multimission Satellite Altimetry to Monitor Subglacial Hydrological Activities in the Totten Basin, East Antarctica

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In East Antarctica, the largest thinning rates are observed at Totten Glacier in recent years. Hydrologic activity of the three active subglacial lakes (Totten1, Totten2, and Wilkes1) located on Totten Glacier may affect the ice sheet mass balance in the
Jun Liu, Lihui Chen, Denghui Tang, Huan Xie, Xiangbin Cui, Peinan Li   +5 more
doaj   +1 more source

The Impact of Subglacial Drainage System Evolution and Glacier Lake Outburst on Arctic Fjord Macronutrient Dynamics

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 7, July 2026.
Abstract Global warming is amplified in the Arctic, accelerating glacier melt and freshwater runoff. At tidewater glaciers, runoff typically enters fjords at depth and generates buoyancy‐driven circulation that enhances glacier‐ocean exchanges of energy and matter, influencing macronutrient delivery and marine primary production.
Andreas Alexander, Livia Piermattei, Philipp Assmy, Andrea L. Popp, Ken Zhao, Nicolas Valiente, Guy D. Tallentire, Simon Filhol, Thomas V. Schuler, Ugo Nanni, Jack Kohler, Louise S. Schmidt, Léo Decaux, George Cowie, Allison Bailey, Riko Noormets, Pierre‐Marie Lefeuvre, Claire S. Earlie, Maarja Kruusmaa, Andy Hodson   +19 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  

Evidence for a palaeo-subglacial lake on the Antarctic continental shelf

Nature Communications, 2017
While a number of subglacial lakes have been discovered beneath the modern Antarctic ice sheet, little is known regarding their prevalence during past glaciations. Here, Kuhnet al. present sedimentological evidence for an active palaeo-subglacial lake in
Gerhard Kuhn, Claus-Dieter Hillenbrand, Sabine Kasten, James A. Smith, Frank O. Nitsche, Thomas Frederichs, Steffen Wiers, Werner Ehrmann, Johann P. Klages, José M. Mogollón   +9 more
doaj   +1 more source

Seismic ground vibrations give advanced early-warning of subglacial floods

Nature Communications, 2020
Subglacial lakes and jökulhlaups (glacier outburst floods) are common in volcanic and glaciated environments, and can pose potential threats to communities living downstream. Here, the authors find that seismic tremor signals during subglacial floods can
Eva P. S. Eibl, Christopher J. Bean, Bergur Einarsson, Finnur Pàlsson, Kristin S. Vogfjörd   +4 more
doaj   +1 more source

Bed Topography and Subglacial Conditions of Denman Glacier, East Antarctica: Insights From Magnetotelluric Data and Interdisciplinary Studies

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 7, July 2026.
Abstract Understanding the basal conditions of East Antarctica's outlet glaciers is critical for accurately modeling future ice‐sheet evolution. Denman Glacier, one of the continent's fastest‐flowing glaciers, has been identified in bed‐topography models as occupying the deepest continental trough on Earth, potentially acting as a major outlet of the ...
Maria Constanza Manassero, Kate Selway, Tobias Stål, Matthias Scheiter, Mareen Loesing, Felicity McCormack, Jacqueline A. Halpin, Bernd Kulessa, Anya M. Reading   +8 more
wiley   +1 more source

Evidence for Possible New Subglacial Lakes along a Radar Transect Crossing the Belgica Highlands and the Concordia Trench [PDF]

, 2008
Subglacial lakes are of great interest to the scientific community, and about 190 lakes have been identified in Antarctica and catalogued (Siegert et al., 2005; Cafarella et al., 2006; Popov & Masolov, 2007).
Urbini, S., Tabacco, I. E., Forieri, A., Cafarella, L., Bianchi, C., Zirizzotti, A.   +5 more
core  

Repeated subglacial jökulhlaups in northeastern Greenland revealed by CryoSat

Journal of Glaciology
Surface height changes above three previously undetected subglacial lakes in northeastern Greenland are documented using CryoSat, DEMs and ICESat-2. Between 7 February and 6 March 2012, the central ice region (22.6 km2) above the largest lake dropped by ~
Laurence Gray, David Burgess, Luke Copland, Christine Dow, Xavier Fettweis, David Fisher, Will Kochtitzky, Wesley van Wychen, James Zheng   +8 more
doaj   +1 more source