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|a Sea level as a stabilizing factor for marine-ice-sheet grounding lines |h [electronic resource]. |
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|a [S.l.] : |b Macmillan Publishers Limited, |c 2010-12. |
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|a Nature Geoscience Volume 3 |y English. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a Climate change could potentially destabilize marine ice sheets,
which would affect projections of future sea-level rise1–4.
Specifically, an instability mechanism5–8 has been predicted for
marine ice sheets such as the West Antarctic ice sheet that
rest on reversed bed slopes, whereby ice-sheet thinning or
rising sea level leads to irreversible retreat of the grounding
line. However, existing analyses of this instability mechanism
have not accounted for deformational and gravitational effects
that lead to a sea-level fall at the margin of a rapidly
shrinking ice sheet9–11. Here we present a suite of predictions
of gravitationally self-consistent sea-level change following
grounding-line migration. Our predictions vary the initial
ice-sheet size and also consider the contribution to sealevel
change from various subregions of the simulated ice
sheet. Using these results, we revisit a canonical analysis of
marine-ice-sheet stability5 and demonstrate that gravity and
deformation-induced sea-level changes local to the grounding
line contribute a stabilizing influence on ice sheets grounded on
reversed bed slopes. We conclude that accurate treatments of
sea-level change should be incorporated into analyses of past
and future marine-ice-sheet dynamics. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|t Sea level as a stabilizing factor for marine-ice-sheet grounding lines |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15061957/00001 |y Click here for full text |
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|3 Host material |u http://www.nature.com/ngeo/journal/v3/n12/abs/ngeo1012.html |y Sea level as a stabilizing factor for marine-ice-sheet grounding lines |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/19/57/00001/FI15061957thm.jpg |
