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

Dramis, F.; Govi, Mario; Guglielmin, Mauro; Mortara, G.

doi:10.1002/ppp.3430060108

Cited by 80 publications

(46 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Permafrost degradation has been suggested as a cause of many rock falls and large-scale slope failure (e.g. Dramis et al, 1995;Gruber et al, 2004;Fischer et al, 2006;Ravanel and Deline, 2011). Permafrost degradation may not follow a similar pattern in all parts of a mountain range.…”

Section: Climatic Changesmentioning

confidence: 99%

See 1 more Smart Citation

Paraglacial rock-slope stability

2012

View full text Add to dashboard Cite

Section: Climatic Changesmentioning

confidence: 99%

“…In some cases the landslides triggered by these processes can be large and catastrophic (e.g. Dramis et al, 1995;). …”

Section: Climate Drivers Of Post-glacial Rock Slope Activitymentioning

confidence: 99%

Paraglacial rock-slope stability

2012

View full text Add to dashboard Cite

“…The possibility that failure was triggered by warming of ice in bedrock joints reducing the stability of the rock mass (e.g. Dramis et al, 1995;Haeberli et al, 1997;Davies et al, 2001;Fischer et al, 2006;Gruber and Haeberli, 2007) seems unlikely as failure occurred during cold periods associated with widespread permafrost, but cannot be excluded owing to the low precision of the exposure ages.…”

Section: Paraglacial Landscape Modificationmentioning

confidence: 99%

Exposure dating and reinterpretation of coarse debris accumulations (‘rock glaciers’) in the Cairngorm Mountains, Scotland

Ballantyne

Schnabel

2008

J Quaternary Science

View full text Add to dashboard Cite

Relict rock glaciers have considerable potential for contributing to palaeoclimatic reconstruction, but this potential is often undermined by lack of dating control and problems of interpretation. Here we reinvestigate and date four proposed 'rock glaciers' in the Cairngorm Mountains and show that the morphology of only one of these appears consistent with that of a true rock glacier produced by creep of underlying ice or ice-rich sediment. All four features comprise rockslide or rock avalanche runout debris, and the possibility that all four represent unmodified runout accumulations cannot be discounted. Surface exposure dating of the four debris accumulations using cosmogenic 10 Be produced uncertainty-weighted mean ages of 15.4 AE 0.8 ka, 16.2 AE 1.0 ka, 12.1 AE 0.6 ka and 12.7 AE 0.8 ka. All four ages imply emplacement under cold stadial conditions, two prior to the Windermere Interstade of ca. 14.5-12.9 cal. ka BP and two during the Loch Lomond Stade of ca. 12.9-11.5 cal. ka BP. The above ages indicate that paraglacial rock-slope failure on granite rockwalls occurred within a few millennia after deglaciation. The mean exposure ages obtained for runout debris at two sites -Strath Nethy (16.2 AE 1.0 ka) and Lairig Ghru (15.4 AE 0.8 ka) -are consistent with basal radiocarbon ages from Loch Etteridge, 22 km to the southwest (mean ¼ 15.6 AE 0.3 cal. ka BP) and imply widespread deglaciation of the Cairngorms and adjacent valleys before 15 ka and possibly 16 ka.

show abstract

“…Landslides are triggered by a number of factors, including earthquakes (Keefer 2002;Malamud et al 2004;Meunier et al 2008), rainfall (Iverson 2000;Zêzere et al 2005;Guzzetti et al 2007;Keefer and Larsen 2007;Marques et al 2008), temperature change (Dehn and Buma 1999;Chemenda et al 2005), glacial recession and permafrost degradation (Dramis et al 1995;Stoffel et al 2014) and anthropogenic factors such as the removal of slope toes at road cuts (Barnard et al 2001). For landslides, the hydro-meteorological trigger is often rainfall (Jakob and Weatherly 2003;Farahmand and Aghakouchak 2013), and empirical rainfall thresholds are often used to define minimum triggering conditions for landslides (Peruccacci et al 2012); however these are often localized, and depend greatly on the quality of rainfall data (Gariano et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Landslides and synoptic weather trends in the European Alps

2016

View full text Add to dashboard Cite

Landslides present a substantial geomorphological hazard in Alpine regions and there are expectations that climate change will alter their frequency and magnitude in the future. Understanding the spatial distribution and timing of landslides in the context of past change is therefore necessary if we are to assess their future behaviour. Using a regional landslide inventory for the European Alps we analyse the influence of weather types, specifically the COST733 database, on landslides. Monte Carlo permutation tests are used to assess which weather types are most likely associated with landslides. Weather types with high precipitation are consistent with more landslides, although there are also seasonal differences. Over the duration of the COST733 catalogue there has been a significant decrease in the number of days with weather types associated with low frequencies of landslides. During the spring and autumn months, the trend in observed landslide frequency and weather types are well matched. However while there is potential for weather typing to be used as a proxy for future landslide frequency, other external factors must be carefully considered.

show abstract

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

Cited by 80 publications

References 5 publications

Paraglacial rock-slope stability

Paraglacial rock-slope stability

Exposure dating and reinterpretation of coarse debris accumulations (‘rock glaciers’) in the Cairngorm Mountains, Scotland

Landslides and synoptic weather trends in the European Alps

Contact Info

Product

Resources

About