http://www.cnr.it/ontology/cnr/individuo/prodotto/ID283123
Linking permafrost distribution, glacial retreat and colluvial sediment dynamics in the Saldur River basin, Eastern Italian Alps (Abstract/Comunicazione in atti di convegno)
- Type
- Label
- Linking permafrost distribution, glacial retreat and colluvial sediment dynamics in the Saldur River basin, Eastern Italian Alps (Abstract/Comunicazione in atti di convegno) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Alternative label
Brardinoni F., Sosio R., Scotti R., Cavalli M., Comiti F., Mair V. (2014)
Linking permafrost distribution, glacial retreat and colluvial sediment dynamics in the Saldur River basin, Eastern Italian Alps
in EGU General Assembly 2014, Vienna (Austria), 27 April - 2 May 2014
(literal)
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- Brardinoni F., Sosio R., Scotti R., Cavalli M., Comiti F., Mair V. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
- Rivista
- Note
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Sosio R., Cavalli M.: CNR-IRPI Padova
Brardinoni F.: University of Milano-Bicocca, Earth and Environmental Sciences e associato CNR-IRPI Padova
Scotti R.: University of Milano-Bicocca, Earth and Environmental Sciences
Comiti F.: Faculty of Science and Technology, Free University of Bozen, Bolzano
Mair V: Geological Survey, Autonomous Province of Bozen- Bolzano (literal)
- Titolo
- Linking permafrost distribution, glacial retreat and colluvial sediment dynamics in the Saldur River basin, Eastern Italian Alps (literal)
- Abstract
- In the last three decades generalized atmospheric temperature rise has produced rapid glacial retreat and permafrost
degradation in high mountain environments of the European Alps. While it is widely recognized that these changes
can impart general instability to mountain slopes (i.e. several projects have documented single case studies of
high magnitude-low frequency, catastrophic slope failures), to our knowledge, there appears to be little empirical
data available for investigating the spatial distribution of mass-wasting intensity through time in high mountain
areas in relation to permafrost degradation and deglaciation patterns. This is a critical shortcoming. Understanding
and quantifying the influence of similar transient conditions on mass-wasting processes holds critical long-term
implications on the overall sediment flux reshaping mountain landscapes (e.g., post-LGM landscape evolution), as
well as more practical short-term applications on water quality issues, damage control/prevention to infrastructure,
and reservoir siltation, to mention some.
In this contribution we present an integrated approach that aims to: (i) document the spatial distribution of
mass-wasting activity and sediment production in the Saldur River basin (97 km^2); (ii) detect causal linkages
between mass-wasting intensity, the potential spatial distribution of discontinuous permafrost, and patterns of
glacier retreat; and (iii) identify source-to-sink colluvial sedimentary pathways as modulated by the spatial
organization of glacial and periglacial landforms.
To these ends, we map rock glaciers, protalus ramparts and moraines, and compile a field- and air photo-based
multi-temporal (1959-2012) inventory of colluvial sediment sources. We then combine these data with two
historical datasets of debris flow and landslide events (both implemented and maintained by the Autonomous
Province of Bolzano) and analyse mass-wasting spatial distribution and intensity in relation to proximity of glacier
fronts, intact and relict periglacial landforms, and a permafrost index map (implemented through PermaNET;
http://www.permanet-alpinespace.eu/).
This work is part of SedAlp (www.sedalp.eu), a project funded through the Alpine Space Programme. (literal)
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