A new approach to inferring basal drag and ice rheology in ice streams, with applications to West Antarctic Ice Streams [PDF]
Journal of Glaciology, 2020 AbstractDrag at the bed and along the lateral margins are the primary forces resisting flow in outlet glaciers. Simultaneously inferring these parameters is challenging since basal drag and ice viscosity are coupled in the momentum balance, which governs ice flow.
Meghana Ranganathan +3 more
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Stream hydrology controls on ice cliff evolution and survival on debris-covered glaciers [PDF]
Earth Surface DynamicsIce cliffs are melt hot spots that contribute disproportionately to melt on debris-covered glaciers. In this study, we investigate the impact of supraglacial stream hydrology on ice cliffs using in situ and remote sensing observations, streamflow ...
E. Petersen +3 more
doaj +1 more source
Modeling Antarctic subglacial lake filling and drainage cycles [PDF]
The Cryosphere, 2016 The growth and drainage of active subglacial lakes in Antarctica has previously been inferred from analysis of ice surface altimetry data. We use a subglacial hydrology model applied to a synthetic Antarctic ice stream to examine internal controls on the
C. F. Dow +3 more
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Modeling Ice‐Crystal Fabric as a Proxy for Ice‐Stream Stability [PDF]
Journal of Geophysical Research: Earth Surface, 2021 AbstractThe crystal structure within an ice sheet evolves in response to deformation; hence ice‐crystal fabric records ice‐flow history. However, the complexity of crystal‐fabric evolution, and the lack of model results with which to compare data, limit the usefulness of fabric measurements, particularly in areas with complex ice dynamics. Here, we use
David A. Lilien +3 more
openaire +2 more sources
Analytical solutions for the surface response to small amplitude perturbations in boundary data in the shallow-ice-stream approximation [PDF]
The Cryosphere, 2008 New analytical solutions describing the effects of small-amplitude perturbations in boundary data on flow in the shallow-ice-stream approximation are presented.
G. H. Gudmundsson
doaj
Annals of Glaciology, 2020 Here we use polarimetric measurements from an Autonomous phase-sensitive Radio-Echo Sounder (ApRES) to investigate ice fabric within Whillans Ice Stream, West Antarctica.
Thomas M. Jordan +3 more
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Ice stream behaviour and deglaciation of the Scandinavian Ice Sheet in the Kuittijärvi area, Russian Karelia [PDF]
Bulletin of the Geological Society of Finland, 2008 Glacial landforms of the Lake Kuittijärvi area, Russian Karelia, which covers an area of more than 7000 km2 , were studied in detail using aerial photography and satellite imagery methods and on-site field observations.
N. Putkinen, J.-P. Lunkka
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The BEAMISH hot water drill system and its use on the Rutford Ice Stream, Antarctica
Annals of Glaciology, 2021 During the 2018/19 Antarctic field season, the British Antarctic Survey (BAS) Basal conditions on Rutford Ice Stream: BEd Access, Monitoring and Ice Sheet History’ (BEAMISH) project drilled three holes through the Rutford Ice Stream, West Antarctica.
Paul G. D. Anker +3 more
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Insights into ice stream dynamics through modelling their response to tidal forcing [PDF]
The Cryosphere, 2014 The tidal forcing of ice streams at their ocean boundary can serve as a natural experiment to gain an insight into their dynamics and constrain the basal sliding law.
S. H. R. Rosier +2 more
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Late Holocene stabilization of Conway Ice Ridge [PDF]
The CryosphereMarine ice sheets are low-pass filters of climate variability that take centuries to millennia to adjust to interior and near-terminus changes in mass balance.
A. O. Hoffman +11 more
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