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| Titel |
Ice volume distribution and implications on runoff projections in a glacierized catchment |
| VerfasserIn |
J. Gabbi, D. Farinotti, A. Bauder, H. Maurer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 16, no. 12 ; Nr. 16, no. 12 (2012-12-03), S.4543-4556 |
| Datensatznummer |
250013603
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| Publikation (Nr.) |
 copernicus.org/hess-16-4543-2012.pdf |
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| Zusammenfassung |
| A dense network of helicopter-based ground-penetrating radar (GPR)
measurements was used to determine the ice-thickness distribution in the
Mauvoisin region. The comprehensive set of ice-thickness measurements was
combined with an ice-thickness estimation approach for an accurate
determination of the bedrock. A total ice volume of 3.69 ± 0.31 km3
and a maximum ice thickness of 290 m were found. The ice-thickness values
were then employed as input for a combined glacio-hydrological model forced
by most recent regional climate scenarios. This model provided glacier
evolution and runoff projections for the period 2010–2100. Runoff
projections of the measured initial ice volume distribution show an increase
in annual runoff of 4% in the next two decades, followed by a persistent
runoff decrease until 2100. Finally, we checked the influence of the
ice-thickness distribution on runoff projections. Our analyses revealed that
reliable estimates of the ice volume are essential for modelling future
glacier and runoff evolution. Wrong estimations of the total ice volume might
even lead to deviations of the predicted general runoff trend. |
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