Results 31 to 40 of about 192,513 (268)

Rapid Basal Channel Growth Beneath Greenland's Longest Floating Ice Shelf

open access: yesGeophysical Research Letters, 2023
Nioghalvfjerdsfjorden Glacier (N79) is one of the two main outlets for Greenland's largest ice stream, the Northeast Greenland Ice Stream, and is the more stable of the two, with no calving front retreat expected in the near future. Using a novel surface
Ash Narkevic, Bea Csatho, Toni Schenk
doaj   +1 more source

Impact of runoff temporal distribution on ice dynamics [PDF]

open access: yesThe Cryosphere, 2022
Record highs of meltwater production at the surface of the Greenland ice sheet have been recorded with a high recurrence over the last decades. Those melt seasons with longer durations, larger intensities, or with both increased length and melt intensity
B. de Fleurian   +2 more
doaj   +1 more source

On the physical basis for the creep of ice: the high temperature regime

open access: yesJournal of Glaciology, 2020
This work quantifies the increased temperature sensitivity of the constitutive behavior of ice with proximity to the melting point in terms of dislocation mechanics.
D.M. Cole
doaj   +1 more source

Evidence of Abrupt Transitions Between Sea Ice Dynamical Regimes in the East Greenland Marginal Ice Zone

open access: yesGeophysical Research Letters, 2023
Sea ice modulates the energy exchange between the atmosphere and the ocean through its kinematics. Marginal ice zone (MIZ) dynamics are complex and are not well resolved in routine observations.
Daniel M. Watkins   +3 more
doaj   +1 more source

Implementation of water tracers in the Met Office Unified Model [PDF]

open access: yesGeoscientific Model Development
There is an increasing need to understand how water is cycled and transported within the atmosphere, to aid water management. Here, atmospheric water tracers are added to the Met Office Unified Model (UM) to allow tracking of water within the model. This
A. J. McLaren   +9 more
doaj   +1 more source

The role of near-terminus conditions in the ice-flow speed of Upernavik Isstrøm in northwest Greenland

open access: yesAnnals of Glaciology, 2023
Upernavik Isstrøm, the largest contributor to sea-level rise in northwest Greenland, has experienced complex and contrasting ice-flow-speed changes across its five outlets over the last two decades.
Kelsey M. Voss   +3 more
doaj   +1 more source

Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse

open access: yesNature Communications, 2016
The peak in Antarctic ice core isotope values, 128,000 years before present, was concurrent with a significantly warmer-than-present Antarctic climate.
Max D. Holloway   +5 more
doaj   +1 more source

Dynamical Instabilities of Ice X

open access: yesPhysical Review Letters, 2008
Water ice X is stable in the 120-400 GPa pressure range, as obtained from lattice dynamical calculations performed using the density-functional theory. Below 120 GPa, it is characterized by one unstable flat phonon band, which generates the disordered ice X structure.
openaire   +3 more sources

The first firn core from Peter I Island – capturing climate variability across the Bellingshausen Sea [PDF]

open access: yesClimate of the Past
Peter I Island is situated in the Bellingshausen Sea, a region that has experienced considerable climate change in recent decades. Warming sea surface temperatures and reduced sea ice cover have been accompanied by warming surface air temperature ...
E. R. Thomas   +9 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

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