Results 51 to 60 of about 487,910 (214)
Parameterization for subgrid-scale motion of ice-shelf calving fronts [PDF]
Abstract. A parameterization for the motion of ice-shelf fronts on a Cartesian grid in finite-difference land-ice models is presented. The scheme prevents artificial thinning of the ice shelf at its edge, which occurs due to the finite resolution of the model.
Marianne Haseloff+9 more
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Finite Element Analysis of Calving From Ice Fronts [PDF]
The Antarctic ice sheet has almost no net annual ablation on its surface, so most mass losses are by iceberg calving along its perimeter, which may be either grounded in shallow water or floating in deep water. An ice cliff forms along the perimeter in both cases.
William F. Schmidt, James L. Fastook
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IceLines – A new data set of Antarctic ice shelf front positions
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
doaj +1 more source
Tidewater glacier response to individual calving events
Tidewater glaciers have been observed to experience instantaneous, stepwise increases in velocity during iceberg-calving events due to a loss of resistive stresses.
Jason M. Amundson+2 more
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Velocity response of Petermann Glacier, northwest Greenland, to past and future calving events [PDF]
Dynamic ice discharge from outlet glaciers across the Greenland Ice Sheet has increased since the beginning of the 21st century. Calving from floating ice tongues that buttress these outlets can accelerate ice flow and discharge of grounded ice. However,
E. A. Hill+3 more
doaj +1 more source
Automatic Extraction of the Calving Front of Pine Island Glacier Based on Neural Network
Calving front location plays a crucial role in studying ice–ocean interaction, mapping glacier area change, and constraining ice dynamic models. However, relying solely on visual interpretation to extract annual changes in the calving front of ice ...
Xiangyu Song, Yang Du, Jiang Guo
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The calving of A‐68, the 5,800‐km2, 1‐trillion‐ton iceberg shed from the Larsen C Ice Shelf in July 2017, is one of over 10 significant ice‐shelf loss events in the past few decades resulting from rapid warming around the Antarctic Peninsula.
J. Ingels+38 more
semanticscholar +1 more source
Buoyant calving and ice-contact lake evolution at Pasterze Glacier (Austria) in the period 1998–2019
. Rapid growth of proglacial lakes in the current warming climate can pose significant outburst flood hazards, increase rates of ice mass loss, and alter the dynamic state of glaciers.
A. Kellerer‐Pirklbauer+5 more
semanticscholar +1 more source
On The Calving of Ice From Floating Glaciers and Ice Shelves [PDF]
The deformation and the state of stress in the frontal part of a floating glacier is analysed by a method analogous with the beam theory, applied in engineering practice for determining stresses and deflections of a beans of an elastic material. Very rough approximations are made, the most severe being that of assuming the viscosity of the ice constant.
openaire +2 more sources
Calving driven by horizontal forces in a revised crevasse-depth framework [PDF]
Calving is a key process for the future of our ice sheets and oceans, but representing it in models remains challenging. Among numerous possible calving parameterisations, the crevasse-depth law remains attractive for its clear physical interpretation ...
D. A. Slater, T. J. W. Wagner
doaj +1 more source