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Mountain permafrost and slope instability in the Italian Alps: The Val Pola Landslide

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  • F. Dramis
  • M. Govi
  • M. Guglielmin
  • G. Mortara

Abstract

In July 1987 a landslide affected the Val Pola (Central Alps, Italy) causing several casualities and severe damage. The main conditioning and triggering factors for the huge debris avalanche are described and possible mechanisms are suggested. Present‐day high‐mountain periglacial conditions (such as rock glaciers) present in the area highlight the probable role played by the presence of mountain permafrost in triggering the slope instability. En juin 1987, un glissement de terrain a affecté le ‘Val Pola’ (Alpes centrales, Italie) en provoquant plusieurs décès et des dommages divers. Les principaux facteurs responsables de cette grande avalanche de débris sont décrits et les mécanismes intervenus dans ce phénomène sont suggérés. Les conditions périglaciaires de haute montagne qui existent dans la région et qui sont démontrées par la présence de glaciers rocheux attestent du rǒle probable du pergélisol de montagne dans l'instabilité de la pente.

Suggested Citation

  • F. Dramis & M. Govi & M. Guglielmin & G. Mortara, 1995. "Mountain permafrost and slope instability in the Italian Alps: The Val Pola Landslide," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 6(1), pages 73-81, January.
    • Handle: RePEc:wly:perpro:v:6:y:1995:i:1:p:73-81
    DOI: 10.1002/ppp.3430060108
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    1. Elias Zubler & Simon Scherrer & Mischa Croci-Maspoli & Mark Liniger & Christof Appenzeller, 2014. "Key climate indices in Switzerland; expected changes in a future climate," Climatic Change, Springer, vol. 123(2), pages 255-271, March.
    2. Yong Wu & Xinpo Li & Lei Zhu, 2021. "Fracture mechanism of rock collapse in the freeze–thaw zone of the eastern Sichuan–Tibet Mountains under seasonal fluctuating combinations of water and heat," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 108(2), pages 2309-2333, September.
    3. J. L. Wood & S. Harrison & T. A. R. Turkington & L. Reinhardt, 2016. "Landslides and synoptic weather trends in the European Alps," Climatic Change, Springer, vol. 136(2), pages 297-308, May.

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