Results 41 to 50 of about 1,414 (196)

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, Till J. W. Wagner, Maya K. Becker, Helen A. Fricker   +3 more
doaj   +1 more source

Melt-under-cutting and buoyancy-driven calving from tidewater glaciers: new insights from discrete element and continuum model simulations

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, JAN ÅSTRÖM, THOMAS ZWINGER, JOE TODD, FAEZEH M. NICK, SUSAN COOK, NICHOLAS R. J. HULTON, ADRIAN LUCKMAN   +7 more
doaj   +1 more source

Observational constraints on the sensitivity of two calving glaciers to external forcings

Journal of Glaciology, 2023
Future mass loss projections of the Greenland ice sheet require understanding of the processes at a glacier terminus, especially of iceberg calving.
Andrea Kneib-Walter, Martin P. Lüthi, Martin Funk, Guillaume Jouvet, Andreas Vieli   +4 more
doaj   +1 more source

Monitoring Greenland ice sheet buoyancy-driven calving discharge using glacial earthquakes

Annals of Glaciology, 2019
Since the 2000s, Greenland ice sheet mass loss has been accelerating, followed by increasing numbers of glacial earthquakes (GEs) at near-grounded glaciers. GEs are caused by calving of km-scale icebergs which capsize against the terminus. Seismic record
Amandine Sergeant, Anne Mangeney, Vladislav A. Yastrebov, Fabian Walter, Jean-Paul Montagner, Olivier Castelnau, Eléonore Stutzmann, Pauline Bonnet, Velotioana Jean-Luc Ralaiarisoa, Suzanne Bevan, Adrian Luckman   +10 more
doaj   +1 more source

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
doaj   +1 more source

Historical occurrence of Antarctic icebergs within mercantile shipping routes and the exceptional events of the 1890s

Journal of Glaciology, 2023
A major consideration for maritime activity in the Southern Hemisphere is the northern limit of icebergs, or the Southern Ocean Limit Of Known Ice (SOLOKI).
Robert Keith Headland, Nicholas Edward Hughes, Jeremy Paul Wilkinson   +2 more
doaj   +1 more source

Iceberg properties and distributions in three Greenlandic fjords using satellite imagery

Annals of Glaciology, 2017
Icebergs calved from tidewater glaciers represent about one third to one half of the freshwater flux from the Greenland ice sheet to the surrounding ocean. Using multiple satellite datasets, we quantify the first fjord-wide distributions of iceberg sizes
Daniel J. Sulak, David A. Sutherland, Ellyn M. Enderlin, Leigh A. Stearns, Gordon S. Hamilton   +4 more
doaj   +1 more source

Sensitivity of a calving glacier to ice–ocean interactions under climate change: new insights from a 3-D full-Stokes model [PDF]

The Cryosphere, 2019
Iceberg calving accounts for between 30 % and 60 % of net mass loss from the Greenland Ice Sheet, which has intensified and is now the single largest contributor to global sea level rise in the cryosphere.
J. Todd, J. Todd, P. Christoffersen, T. Zwinger, P. Råback, D. I. Benn   +5 more
doaj   +1 more source

Numerical Modeling Shows Increased Fracturing Due to Melt-Undercutting Prior to Major Calving at Bowdoin Glacier

Frontiers in Earth Science, 2020
Projections of future ice sheet mass loss and thus sea level rise rely on the parametrization of iceberg calving in ice sheet models. The interconnection between submarine melt-induced undercutting and calving is still poorly understood, which makes ...
Eef C. H. van Dongen, Jan A. Åström, Guillaume Jouvet, Joe Todd, Douglas I. Benn, Martin Funk   +5 more
doaj   +1 more source

Brief Communication "The 2013 Erebus Glacier Tongue calving event" [PDF]

The Cryosphere, 2013
The Erebus Glacier Tongue, a small floating glacier in southern McMurdo Sound, is one of the best-studied ice tongues in Antarctica. Despite this, its calving on the 27 February 2013 (UTC) was around 10 yr earlier than previously predicted.
C. L. Stevens, P. Sirguey, G. H. Leonard, T. G. Haskell   +3 more
doaj   +1 more source