Progressive unanchoring of Antarctic ice shelves since 1973. [PDF]
NatureMass loss of the Antarctic Ice Sheet has been driven primarily by the thinning of the floating ice shelves that fringe the ice sheet1, reducing their buttressing potential and causing land ice to accelerate into the ocean2.
Miles BWJ, Bingham RG.
europepmc +2 more sources
Evaluation of four calving laws for Antarctic ice shelves [PDF]
The Cryosphere, 2023 Many floating ice shelves in Antarctica buttress the ice streams feeding them, thereby reducing the discharge of icebergs into the ocean. The rate at which ice shelves calve icebergs and how fast they flow determine whether they advance, retreat, or ...
J. A. Wilner, M. Morlighem, G. Cheng
doaj +2 more sources
Supervised classification of slush and ponded water on Antarctic ice shelves using Landsat 8 imagery
Journal of Glaciology, 2022 Surface meltwater is becoming increasingly widespread on Antarctic ice shelves. It is stored within surface ponds and streams, or within firn pore spaces, which may saturate to form slush.
Rebecca L. Dell +6 more
doaj +2 more sources
Predicting the steady-state isochronal stratigraphy of ice shelves using observations and modeling [PDF]
The Cryosphere, 2022 Ice shelves surrounding the Antarctic perimeter moderate ice discharge towards the ocean through buttressing. Ice-shelf evolution and integrity depend on the local surface accumulation, basal melting and on the spatially variable ice-shelf viscosity ...
V. Višnjević +7 more
doaj +2 more sources
Troughs developed in ice-stream shear margins precondition ice shelves for ocean-driven breakup. [PDF]
Sci Adv, 2019 Fast-flowing ice shelves may form channels under their margins that promote calving and retreat under warming ocean conditions. Floating ice shelves of fast-flowing ice streams are prone to rift initiation and calving originating along zones of rapid ...
Alley KE +3 more
europepmc +2 more sources
New gravity-derived bathymetry for the Thwaites, Crosson, and Dotson ice shelves revealing two ice shelf populations [PDF]
The Cryosphere, 2020 Ice shelves play a critical role in the long-term stability of ice sheets through their buttressing effect. The underlying bathymetry and cavity thickness are key inputs for modelling future ice sheet evolution.
T. A. Jordan +8 more
doaj +3 more sources
Seawater softening of suture zones inhibits fracture propagation in Antarctic ice shelves. [PDF]
Nat Commun, 2019 Suture zones are abundant on Antarctic ice shelves and widely observed to impede fracture propagation, greatly enhancing ice-shelf stability. Using seismic and radar observations on the Larsen C Ice Shelf of the Antarctic Peninsula, we confirm that such ...
Kulessa B +10 more
europepmc +2 more sources
Instantaneous Antarctic ice sheet mass loss driven by thinning ice shelves
Geophysical Research Letters, 2019 Recent observations show that the rate at which the Antarctic ice sheet (AIS) is contributing to sea level rise is increasing. Increases in ice‐ocean heat exchange have the potential to induce substantial mass loss through the melting of its ice shelves.
G Hilmar Gudmundsson +2 more
exaly +2 more sources
Change in iceberg calving behavior preceded North Sea ice shelf disintegration during the last deglaciation [PDF]
Nature CommunicationsUnderstanding how regime shifts in iceberg calving behavior affect ice shelf stability remains a challenge for numerical models. This is an important question as we consider the fate of the ice shelves that currently buttress the Antarctic Ice Sheet and ...
James D. Kirkham +15 more
doaj +2 more sources
Calving glaciers and ice shelves [PDF]
Advances in Physics: X, 2018 Calving, or the release of icebergs from glaciers and floating ice shelves, is an important process transferring mass into the world’s oceans. Calving glaciers and ice sheets make a large contribution to sea-level rise, but large uncertainty remains about future ice sheet response to alternative carbon scenarios.
Douglas I. Benn, Jan A. Åström
openaire +4 more sources