Modern air, englacial and permafrost temperatures at high altitude on Mt Ortles (3905 m a.s.l.), in the eastern European Alps

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Abstract - 7.8 and - 8.6  ∘ C. The most shallow layers of snow and firn (down to a depth of about 10 m) froze during winter. However, melt water percolation restored isothermal conditions during the ablation season, and the entire firn layer was found at the melting pressure point. Glacier ice is cold, but only from about 30 m depth. Englacial temperature decreases with depth, reaching a minimum of almost - 3  ∘ C close to the bedrock, at 75 m depth. A small glacier located at 3470 m a.s.l., close to the summit of Mt Ortles, was also found in cold conditions down to a depth of 9.5 m. The mean annual ground surface temperature was negative for all but one monitored sites, indicating cold ground conditions and the existence of permafrost in nearly all debris-mantled slopes of the summit. Similarly, the mean annual rock wall temperature was negative at most monitored sites, except the lowest one at 3030 m a.s.l. This suggests that the rock faces of the summit are affected by permafrost at all exposures.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Modern air, englacial and permafrost temperatures at high altitude on Mt Ortles (3905 m a.s.l.), in the eastern European Alps ; volume:15 ; number:10 ; year:2023 ; pages:4661-4688 ; extent:28
Earth system science data ; 15, Heft 10 (2023), 4661-4688 (gesamt 28)

Creator: Carturan, Luca
De Blasi, Fabrizio
Dinale, Roberto
Dragà, Gianfranco
Gabrielli, Paolo
Mair, Volkmar
Seppi, Roberto
Tonidandel, David
Zanoner, Thomas
Zendrini, Tiziana Lazzarina
Dalla Fontana, Giancarlo

DOI: 10.5194/essd-15-4661-2023

URN: urn:nbn:de:101:1-2023102604330149859294

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 14.08.2025, 10:57 AM CEST

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Associated

Carturan, Luca
De Blasi, Fabrizio
Dinale, Roberto
Dragà, Gianfranco
Gabrielli, Paolo
Mair, Volkmar
Seppi, Roberto
Tonidandel, David
Zanoner, Thomas
Zendrini, Tiziana Lazzarina
Dalla Fontana, Giancarlo

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