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Cassure et conditions favorisant la stabilité du nord de la plate-forme de glace Larsen en Antarctique.

Breakup and conditions for stability of the northern Larsen Ice Shelf, Antarctica.

Auteurs : DOAKE C. S. M., CORR H. F. J., ROTT H., SKVARKA P., YOUNG N. W.

Type d'article : Article

Résumé

The rapid collapse of the northernmost section of the Larsen Ice Shelf (Larsen A) over a few days in January 1995, indicated that, after retreat beyong a critical limit, ice shelves may disintegrate rapidly. The authors use a finite element numerical model that treats ice as a continuum without fracture to examine the breakup history between 1986 and 1997 of the two northern sections of Larsen Ice Shelf (Larsen A and Larsen B). On Larsen A, only the initial and final ice-front configurations show a stable pattern. Larsen B at present exhibits a stable pattern, but if the ice front were to retreat by a furhter few kilometers, it too is likely to enter an irreversible retreat phase.

Détails

  • Titre original : Breakup and conditions for stability of the northern Larsen Ice Shelf, Antarctica.
  • Identifiant de la fiche : 1999-0591
  • Langues : Anglais
  • Sujet : Environnement, Généralités
  • Source : Nature - vol. 391 - n. 6669
  • Date d'édition : 19/02/1998
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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