Details
| Original language | English |
|---|---|
| Pages (from-to) | 297-302 |
| Number of pages | 6 |
| Journal | TERRA NOVA |
| Volume | 22 |
| Issue number | 4 |
| Publication status | Published - Aug 2010 |
Abstract
Although deglaciation after the Last Glacial Maximum (LGM) caused a considerable isostatic rebound of orogens worldwide, the effect of this uplift on glacier mass balance has never been quantified. Here, we propose that postglacial rebound promotes the re-advance of glaciers by enlarging their accumulation areas, and test our hypothesis for the European Alps. Using a three-dimensional numerical model with a rheologically layered lithosphere and a reconstructed LGM ice distribution, we show that deglaciation caused up to ∼128 m of rebound between 21 and 13 ka. The rebound-induced increase in the total glacier accumulation area is 50% at the onset of the Younger Dryas. This shows that postglacial rebound results in a positive glacier mass balance, which may explain the discrepancy between the equilibrium line altitudes derived from different sources in the central Alps.
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geology
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In: TERRA NOVA, Vol. 22, No. 4, 08.2010, p. 297-302.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Postglacial rebound promotes glacial re-advances - a case study from the European Alps
AU - Norton, Kevin P.
AU - Hampel, Andrea
PY - 2010/8
Y1 - 2010/8
N2 - Although deglaciation after the Last Glacial Maximum (LGM) caused a considerable isostatic rebound of orogens worldwide, the effect of this uplift on glacier mass balance has never been quantified. Here, we propose that postglacial rebound promotes the re-advance of glaciers by enlarging their accumulation areas, and test our hypothesis for the European Alps. Using a three-dimensional numerical model with a rheologically layered lithosphere and a reconstructed LGM ice distribution, we show that deglaciation caused up to ∼128 m of rebound between 21 and 13 ka. The rebound-induced increase in the total glacier accumulation area is 50% at the onset of the Younger Dryas. This shows that postglacial rebound results in a positive glacier mass balance, which may explain the discrepancy between the equilibrium line altitudes derived from different sources in the central Alps.
AB - Although deglaciation after the Last Glacial Maximum (LGM) caused a considerable isostatic rebound of orogens worldwide, the effect of this uplift on glacier mass balance has never been quantified. Here, we propose that postglacial rebound promotes the re-advance of glaciers by enlarging their accumulation areas, and test our hypothesis for the European Alps. Using a three-dimensional numerical model with a rheologically layered lithosphere and a reconstructed LGM ice distribution, we show that deglaciation caused up to ∼128 m of rebound between 21 and 13 ka. The rebound-induced increase in the total glacier accumulation area is 50% at the onset of the Younger Dryas. This shows that postglacial rebound results in a positive glacier mass balance, which may explain the discrepancy between the equilibrium line altitudes derived from different sources in the central Alps.
UR - http://www.scopus.com/inward/record.url?scp=77955168769&partnerID=8YFLogxK
U2 - 10.1111/j.1365-3121.2010.00946.x
DO - 10.1111/j.1365-3121.2010.00946.x
M3 - Article
AN - SCOPUS:77955168769
VL - 22
SP - 297
EP - 302
JO - TERRA NOVA
JF - TERRA NOVA
SN - 0954-4879
IS - 4
ER -