Results 41 to 50 of about 12,531 (254)

Subglacial Processes at Bondhusbreen, Norway: Preliminary Results [PDF]

open access: yesAnnals of Glaciology, 1983
Subglacial hydrology, sediment transport, pressure, and temperature have been studied beneath approximately 160 m of ice at Sondhusbreen, an outlet glacier from Folgefonni in south-western Norway.The volume of the mean annual water discharge passing through the study area is about 60x106m3.
Jon Ove Hagen   +4 more
openaire   +1 more source

Seismic Tremor Reveals Spatial Organization and Temporal Changes of Subglacial Water System [PDF]

open access: yes, 2019
©2019. American Geophysical Union. All Rights Reserved.Subglacial water flow impacts glacier dynamics and shapes the subglacial environment. However, due to the challenges of observing glacier beds, the spatial organization of subglacial water systems and
Amundson, Jason M.   +4 more
core   +2 more sources

Identification and Activity of Subglacial Lakes Beneath the Mercer and Whillans Ice Streams and Slessor Glacier

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The identification and activity monitoring of Antarctic subglacial lakes contribute to the analysis of the mass balance and sea level change. Remote sensing techniques, especially satellite altimetry, are ideal ways for identifying active subglacial ...
Yi Fan   +4 more
doaj   +1 more source

Filling and drainage of a subglacial lake beneath the Flade Isblink ice cap, northeast Greenland [PDF]

open access: yesThe Cryosphere, 2022
The generation, transport, storage and drainage of meltwater play important roles in the Greenland Ice Sheet (GrIS) subglacial system. Active subglacial lakes, common features in Antarctica, have recently been detected beneath the GrIS and may impact ice
Q. Liang   +8 more
doaj   +1 more source

Debris-bed friction during glacier sliding with ice–bed separation

open access: yesAnnals of Glaciology, 2019
Theory and experiments indicate that ice–bed separation during glacier slip over 2-D hard beds causes basal shear stress to reach a maximum at a particular slip velocity and decrease at higher velocities.
Neal R. Iverson   +2 more
doaj   +1 more source

Anomalous luminescence of subglacial sediment at Haut glacier d'Arolla, Switzerland - a consequence of resetting at the glacier bed? [PDF]

open access: yes, 2010
<p>Luminescence has the potential to elucidate glacial geomorphic processes because primary glacial sediment sources and transport pathways are associated with contrasting degrees of exposure to light.
Aitken   +53 more
core   +2 more sources

Subglacial lake activity beneath the ablation zone of the Greenland Ice Sheet [PDF]

open access: yesThe Cryosphere, 2023
Hydrologically active subglacial lakes can drain large volumes of water and sediment along subglacial pathways, affecting the motion and mass balance of ice masses and impacting downstream sediment dynamics.
Y. Fan   +13 more
doaj   +1 more source

Physical and Chemical Controls on Habitats for Life in the Deep Subsurface Beneath Continents and Ice [PDF]

open access: yes, 2016
S.M. was funded by an STFC Aurora studentship (grant ST/1506102/1) and the NASA Astrobiology Institute Program on Foundations of Complex Life, Evolution, Preservation and Detection on Earth and Beyond (grant NNA13AA90A). J.P.
McMahon, Sean Hendry, Parnell, John
core   +1 more source

Bed-type variability and till (dis)continuity beneath Thwaites Glacier, West Antarctica

open access: yesAnnals of Glaciology, 2019
Recent seismic measurements from upper Thwaites Glacier indicate that the bed-type variability is closely related to the along-flow basal topography. In high-relief subglacial highlands, stoss sides of topographic highs have a relatively higher acoustic ...
Atsuhiro Muto   +3 more
doaj   +1 more source

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