The safety band of Antarctic ice shelves

Beitrag in einer Fachzeitschrift
(Letter)


Details zur Publikation

Autorinnen und Autoren: Fürst J, Durand G, Gillet-Chaulet F, Tavard L, Rankl M, Braun M, Gagliardini O
Zeitschrift: Nature Climate Change
Jahr der Veröffentlichung: 2016
Band: 6
Seitenbereich: 479-482
ISSN: 1758-6798
Sprache: Englisch


Abstract

The floating ice shelves along the seaboard of the Antarctic ice
sheet restrain the outflowof upstreamgrounded ice. Removal
of these ice shelves, as shown by past ice-shelf recession and
break-up, accelerates the outflow, which adds to sea-level
rise. A key question in predicting future outflow is to quantify
the extent of calving that might precondition other dynamic
consequences and lead to loss of ice-shelf restraint. Here we
delineate frontal areas that we label as ‘passive shelf ice’ and
that can be removed without major dynamic implications, with
contrasting results across the continent. The ice shelves in the
Amundsen and Bellingshausen seas have limited or almost no
‘passive’ portion, which implies that further retreat of current
ice-shelf fronts will yield important dynamic consequences.
This region is particularly vulnerable as ice shelves have been
thinning at high rates for two decades and as upstream
grounded ice rests on a backward sloping bed, a precondition to
marine ice-sheet instability. In contrast to these ice shelves,
Larsen C Ice Shelf, in theWeddell Sea, exhibits a large ‘passive’
frontal area, suggesting that the imminent calving of a vast
tabular iceberg will be unlikely to instantly produce much
dynamic change.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Braun, Matthias Prof. Dr.
Professur für Geographie (Fernerkundung und GIS)
Fürst, Johannes Dr.
Institut für Geographie
Rankl, Melanie
Institut für Geographie


Zitierweisen

APA:
Fürst, J., Durand, G., Gillet-Chaulet, F., Tavard, L., Rankl, M., Braun, M., & Gagliardini, O. (2016). The safety band of Antarctic ice shelves. Nature Climate Change, 6, 479-482. https://dx.doi.org/10.1038/NCLIMATE2912

MLA:
Fürst, Johannes, et al. "The safety band of Antarctic ice shelves." Nature Climate Change 6 (2016): 479-482.

BibTeX: 

Zuletzt aktualisiert 2018-02-11 um 12:10