Thinning sea ice weakens buttressing force of iceberg mélange and promotes calving [PDF]
Nature Communications, 2017 Observed sea-ice loss near ice sheets has, in many cases, been accompanied by accelerated iceberg calving. Here, using a new model, the authors show that iceberg calving from glaciers can be suppressed by a mélange of sea ice and icebergs, with an ...
Alexander A. Robel
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A century of variation in the dependence of Greenland iceberg calving on ice sheet surface mass balance and regional climate change. [PDF]
Proc Math Phys Eng Sci, 2014 Iceberg calving is a major component of the total mass balance of the Greenland ice sheet (GrIS). A century-long record of Greenland icebergs comes from the International Ice Patrol's record of icebergs (I48N) passing latitude 48° N, off Newfoundland ...
Bigg GR +6 more
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Ocean-driven thinning enhances iceberg calving and retreat of Antarctic ice shelves. [PDF]
Proc Natl Acad Sci U S A, 2015 SignificanceThe floating parts of the Antarctic ice sheet (“ice shelves”) help to hold back the flow of the grounded parts, determining the contribution to global sea level rise. Using satellite images, we measured, for the first time, all icebergs larger than 1 km2calving from the entire Antarctic coastline, and the state of health of all the ice ...
Liu Y +7 more
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Rapid iceberg calving following removal of tightly packed pro-glacial mélange. [PDF]
Nat Commun, 2019 AbstractIceberg calving is a major contributor to Greenland’s ice mass loss. Pro-glacial mélange (a mixture of sea ice, icebergs, and snow) may be tightly packed in the long, narrow fjords that front many marine-terminating glaciers and can reduce calving by buttressing. However, data limitations have hampered a quantitative understanding. We develop a
Xie S +4 more
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Quantifying iceberg calving fluxes with underwater noise [PDF]
The Cryosphere, 2020 Accurate estimates of calving fluxes are essential in understanding small-scale glacier dynamics and quantifying the contribution of marine-terminating glaciers to both eustatic sea-level rise (SLR) and the freshwater budget of polar regions.
O. Glowacki, O. Glowacki, G. B. Deane
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Large-scale experiments into the tsunamigenic potential of different iceberg calving mechanisms. [PDF]
Sci Rep, 2019 AbstractMass balance analysis of ice sheets is a key component to understand the effects of global warming. A significant component of ice sheet and shelf mass balance is iceberg calving, which can generate large tsunamis endangering human beings and coastal infrastructure.
Heller V +6 more
europepmc +7 more sources
Ocean tides trigger ice shelf rift growth and calving [PDF]
Nature CommunicationsTabular iceberg calving reduces ice-shelf extent, affecting ocean circulation and ice-sheet stability. Here we present detailed observations of a rift on the Brunt Ice Shelf, East Antarctica, from 2017-2023 and its behaviour in the lead up to calving in ...
O. J. Marsh, R. J. Arthern, J. De Rydt
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Do atmospheric rivers trigger tabular iceberg calving?
Journal of GlaciologyThe processes governing iceberg calving from ice shelves remain poorly understood. Recent studies suggest that anomalous atmospheric moisture transport events – atmospheric rivers – can act as triggers for calving.
Tristan Scott Rendfrey +2 more
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Melt-under-cutting and buoyancy-driven calving from tidewater glaciers: new insights from discrete element and continuum model simulations [PDF]
Journal of Glaciology, 2017 The simple calving laws currently used in ice-sheet models do not adequately reflect the complexity and diversity of calving processes. To be effective, calving laws must be grounded in a sound understanding of how calving actually works.
DOUGLAS I. BENN +7 more
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IceLines – A new data set of Antarctic ice shelf front positions [PDF]
Scientific Data, 2023 The frontal position of an ice shelf is an important parameter for ice dynamic modelling, the computation of mass fluxes, mapping glacier area change, calculating iceberg production rates and the estimation of ice discharge to the ocean.
Celia A. Baumhoer +3 more
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