Antarctic ice rises and rumples: Their properties and significance for ice-sheet dynamics and evolution
Kenichi Matsuoka,Richard C. A. Hindmarsh,Geir Moholdt,Michael J. Bentley,Hamish D. Pritchard,Joel Brown,Howard Conway,Reinhard Drews,Gaël Durand,Daniel Goldberg,Tore Hattermann,Jonathan Kingslake,Jan T. M. Lenaerts,Carlos Martín,Robert Mulvaney,Keith W. Nicholls,Frank Pattyn,Neil Ross,Ted Scambos,Pippa L. Whitehouse +19 more
TL;DR: In this article, the authors evaluate and improve prognostic numerical models and parameterizations of the effects of small-scale pinning points on grounding-zone dynamics, which is needed to assess their impact on ice-sheet behavior.
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About: This article is published in Earth-Science Reviews. The article was published on 01 Nov 2015. and is currently open access. The article focuses on the topics: Ice shelf & Ice divide.
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Citations
Dynamic influence of pinning points on marine ice-sheet stability: a numerical study in Dronning Maud Land, East Antarctica
TL;DR: In this paper, the authors investigated the effect of sub-ice-shelf melting, using a series of scenarios compliant with current values, on the ice-dynamic stability of the outlet glaciers between the Lazarev and Roi Baudouin ice shelves.
Temporally stable surface mass balance asymmetry across an ice rise derived from radar internal reflection horizons through inverse modeling
TL;DR: In this paper, the authors combine younger and older internal reflection horizons (IRHs) from radar to quantify this distribution in time and space across Derwael Ice Rise (DIR), Dronning Maud Land, Antarctica.
Treatment of ice-shelf evolution combining flow and flexure
Douglas R. MacAyeal,Olga V. Sergienko,Alison F. Banwell,Grant J. Macdonald,Ian Willis,Laura A. Stevens +5 more
TL;DR: In this paper, a two-dimensional, plan-view formulation of ice-shelf flow and viscoelastic flexure was developed for both horizontal and vertical deformation.
•Book
Numerical and Theoretical Treatment of Grounding Line Movement and Ice Shelf Buttressing in Marine Ice Sheets
Daniel N. Goldberg
- 04 Sep 2011
TL;DR: In this paper, a model that solves the time-dependent shelfy stream equations and makes use of mesh adaption techniques to overcome the difficulties typically associated with the numerics of grounding line migration is presented.
Ocean forced variability of Totten Glacier mass loss
Jason L. Roberts,Benjamin K. Galton-Fenzi,Benjamin K. Galton-Fenzi,Fernando S. Paolo,Claire Donnelly,David E. Gwyther,David E. Gwyther,Laurie Padman,Duncan A. Young,Roland C. Warner,Jamin S. Greenbaum,Helen A. Fricker,Antony J. Payne,Stephen Cornford,Anne M. Le Brocq,Tas van Ommen,Tas van Ommen,Donald D. Blankenship,Martin J. Siegert +18 more
TL;DR: In this paper, the surface velocity and height of the floating part of the Totten Glacier have varied substantially over two decades (1989-2011), with variations in surface height strongly anti-correlated with simulated basal melt rates.
References
Bedmap2: improved ice bed, surface and thickness datasets for Antarctica
Peter T. Fretwell,Hamish D. Pritchard,David G. Vaughan,Jonathan L. Bamber,Nicholas E. Barrand,Ruth Bell,Cesidio Bianchi,Robert Bingham,Donald D. Blankenship,Gino Casassa,Ginny A. Catania,Denis Callens,Howard Conway,Alison J. Cook,Hugh F. J. Corr,Detlef Damaske,Volkmar Damm,Fausto Ferraccioli,René Forsberg,Shuji Fujita,Y. Gim,Prasad Gogineni,J. A. Griggs,Richard C. A. Hindmarsh,Per Holmlund,John W. Holt,Robert W. Jacobel,Adrian Jenkins,Wilfried Jokat,Tom A. Jordan,Edward C. King,Jack Kohler,William B. Krabill,M. Riger-Kusk,Kirsty Langley,German Leitchenkov,Carl Leuschen,Bruce P. Luyendyk,Kenichi Matsuoka,Jeremie Mouginot,F. O. Nitsche,Yoshifumi Nogi,Ole Anders Nøst,S. V. Popov,Eric Rignot,David M. Rippin,Andrés Rivera,Jason L. Roberts,Neil Ross,Martin J. Siegert,Andrew Smith,Daniel Steinhage,Michael Studinger,Bo Sun,B. K. Tinto,Brian C. Welch,Douglas S. Wilson,Duncan A. Young,Cui Xiangbin,Achille Zirizzotti +59 more
TL;DR: Bedmap2 as discussed by the authors is a suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60° S. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1.
Ice-Shelf Melting Around Antarctica
TL;DR: Detailed glaciological estimates of ice-shelf melting around the entire continent of Antarctica show that basal melting accounts for as much mass loss as does calving, making ice- shelf melting the largest ablation process in Antarctica.
Ice sheet grounding line dynamics: Steady states, stability, and hysteresis
TL;DR: In this paper, the results of boundary layer theory for ice flux in the transition zone against numerical solutions that are able to resolve the transition zones were verified. But the results were not applied to the large-scale dynamics of a marine ice sheet.
Antarctic ice-sheet loss driven by basal melting of ice shelves
Hamish D. Pritchard,Stefan R. M. Ligtenberg,Helen A. Fricker,David G. Vaughan,M. R. van den Broeke,Laurie Padman +5 more
TL;DR: Satellite laser altimetry and modelling of the surface firn layer are used to reveal the circum-Antarctic pattern of ice-shelf thinning through increased basal melt, which implies that climate forcing through changing winds influences Antarctic ice-sheet mass balance, and hence global sea level, on annual to decadal timescales.
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