Tidal Grounding‐Line Migration Modulated by Subglacial Hydrology [PDF]
Geophysical Research Letters, 2020 AbstractWe present a mathematical model of the hydrology of grounding‐line migration on tidal timescales, in which the ice acts elastically, overlying a connected hydrological network, with the ocean tides modeled by an oscillating far‐field fluid height. The upstream grounding‐line migration is driven by a fluid pressure gradient through the grounding
Warburton, KLP, Hewitt, DR, Neufeld, JA
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Persistent, extensive channelized drainage modeled beneath Thwaites Glacier, West Antarctica [PDF]
The Cryosphere, 2022 Subglacial hydrology is a leading control on basal friction and the dynamics of glaciers and ice sheets. At low discharge, subglacial water flows through high-pressure, sheet-like systems that lead to low effective pressures.
A. O. Hager +5 more
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Subglacial hydrology and ice stream margin locations [PDF]
Journal of Geophysical Research: Earth Surface, 2015 AbstractFast‐flowing ice streams in West Antarctica are separated from the nearly stagnant ice in the adjacent ridge by zones of highly localized deformation known as shear margins. It is presently uncertain what mechanisms control the location of shear margins and possibly allow them to migrate.
Thibaut Perol +3 more
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Subglacial Freshwater Drainage Increases Simulated Basal Melt of the Totten Ice Shelf
Geophysical Research Letters, 2023 Subglacial freshwater discharge from beneath Antarctic glaciers likely has a strong impact on ice shelf basal melting. However, the difficulty in directly observing subglacial flow highlights the importance of modeling these processes.
David E. Gwyther +4 more
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Influence of subglacial drainage system evolution on glacier surface motion: Haut Glacier d'Arolla, Switzerland [PDF]
, 2002 The relationship between the evolution of subglacial drainage system morphology and spatial patterns of glacier surface velocity was investigated using dye tracing experiments and ground surveying throughout the 1995 melt season at Haut Glacier d'Arolla,
Balise +29 more
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Seismic Tremor Reveals Spatial Organization and Temporal Changes of Subglacial Water System [PDF]
, 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
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Englacial and Subglacial Hydrology, Austre Okstindbreen, Norway [PDF]
Journal of Glaciology, 1979 AbstractThe efficiency of drainage systems within the glacier Austre Okstindbreen apparently increases as the summer progresses. As the transient equilibrium line moves up-glacier and the main system extends headwards, several systems may join together.
W. H. Theakstone, N. Tvis Knudsen
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Subglacial drainage processes at a High Arctic polythermal valley glacier [PDF]
, 2005 Peer reviewedPublisher ...
Bingham, Robert G. +3 more
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Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet [PDF]
, 2011 Peer reviewedPublisher ...
Alley +31 more
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SUHMO: an AMR SUbglacial Hydrology MOdel v1.0
, 2022 Abstract. Water flowing under ice sheets and glaciers can have a strong influence on ice dynamics, particularly through pressure changes, suggesting that a comprehensive ice sheet model should include the effect of basal hydrology. Modeling subglacial hydrology remains a challenge however, mainly due to the range of spatial and temporal scales involved -
Anne M. Felden +2 more
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