Results 11 to 20 of about 20,609 (205)
Precursor of disintegration of Greenland's largest floating ice tongue [PDF]
The Cryosphere, 2023 The largest floating tongue of Greenland’s ice sheet, Nioghalvfjerdsbræ, has been relatively stable with respect to areal retreat until 2022. Draining more than 6 % of the ice sheet, a disintegration of Nioghalvfjerdsbræ's floating tongue and subsequent ...
A. Humbert +13 more
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Comparison of four calving laws to model Greenland outlet glaciers [PDF]
The Cryosphere, 2018 Calving is an important mechanism that controls the dynamics of marine terminating glaciers of Greenland. Iceberg calving at the terminus affects the entire stress regime of outlet glaciers, which may lead to further retreat and ice flow acceleration. It
Y. Choi +3 more
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Journal of Glaciology, 2023 We investigate the physical basis of the crevasse-depth (CD) calving law by analysing relationships between glaciological stresses and calving behaviour at Sermeq Kujalleq (Store Glacier), Greenland.
Douglas I. Benn +8 more
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Development of ice-shelf estuaries promotes fractures and calving
Nature Geoscience, 2021 As the global climate warms, increased surface meltwater production on ice shelves may trigger ice-shelf collapse and enhance global sea-level rise. The formation of surface rivers could help prevent ice-shelf collapse if they can efficiently evacuate meltwater. Here, we present observations of the evolution of a surface river into an ice-shelf estuary
Alexandra L. Boghosian +6 more
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Buoyant forces promote tidewater glacier iceberg calving through large basal stress concentrations [PDF]
The Cryosphere, 2019 Iceberg calving parameterisations currently implemented in ice sheet models do not reproduce the full observed range of calving behaviours. For example, though buoyant forces at the ice front are known to trigger full-depth calving events on major ...
M. Trevers +4 more
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Viscous and elastic buoyancy stresses as drivers of ice-shelf calving
Journal of Glaciology, 2020 The Antarctic Ice Sheet loses mass via its ice shelves predominantly through two processes: basal melting and iceberg calving. Iceberg calving is episodic and infrequent, and not well parameterized in ice-sheet models.
Cyrille Mosbeux +3 more
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Distinguishing subaerial and submarine calving with underwater noise
Journal of Glaciology, 2022 Iceberg calving is one of the major mechanisms of ice loss from tidewater glaciers and ice sheets, but obtaining accurate estimates of ice discharge that are both continuous and accurate is a challenging task.
Oskar Glowacki
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Thinning leads to calving-style changes at Bowdoin Glacier, Greenland [PDF]
The Cryosphere, 2021 Ice mass loss from the Greenland ice sheet is the largest single contributor to sea level rise in the 21st century. The mass loss rate has accelerated in recent decades mainly due to thinning and retreat of its outlet glaciers.
E. C. H. van Dongen +12 more
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Calving processes at a grounded ice cliff [PDF]
Annals of Glaciology, 1997 Repeat photographs and field survey reveal the mechanism of short-term ice-cliff evolution at Maud Glacier, a temperate lake-calving glacier in New Zealand. Calving is cyclic, each cycle involving four stages: (1) waterline melting and collapse of the roof of a sub-horizontal notch at the cliff foot; (2) calving of ice flakes from the cliff face ...
Martin P. Kirkbride, Charles R. Warren
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A simple stress-based cliff-calving law [PDF]
The Cryosphere, 2019 Over large coastal regions in Greenland and Antarctica the ice sheet calves directly into the ocean. In contrast to ice-shelf calving, an increase in calving from grounded glaciers contributes directly to sea-level rise.
T. Schlemm +4 more
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