Articles | Volume 15, issue 3
https://doi.org/10.5194/nhess-15-647-2015
https://doi.org/10.5194/nhess-15-647-2015
Research article
 | 
27 Mar 2015
Research article |  | 27 Mar 2015

Debris flows in the eastern Italian Alps: seasonality and atmospheric circulation patterns

E. I. Nikolopoulos, M. Borga, F. Marra, S. Crema, and L. Marchi

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Cited articles

Borga, M., Vezzani, C. and Fontana, G. D.: Regional rainfall depth–duration–frequency equations for an alpine region, Nat. Hazards, 36, 221–235, 2005.
Borga, M., Stoffel, M., Marchi, L., Marra, F., and Jakob, M.: Hydrogeomorphic response to extreme rainfall in headwater systems: Flash floods and debris flows, J. Hydrol., 518, 194–205, https://doi.org/10.1016/j.jhydrol.2014.05.022, 2014.
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Dowling, C. and Santi, P.: Debris flows and their toll on human life: a global analysis of debris-flow fatalities from 1950 to 2011, Nat- Hazards, 71, 203–227, https://doi.org/10.1007/s11069-013-0907-4, 2014.
Gestengabe, R. W. and Werner, P. C.: Katalog der Grosswetterlagen Europas (1881– 2004) Nach Paul Hess Und Helmut Brezowsky, 6: Verbesserte und Ergänzte Auflage, PIK Report No. 100, Potsdam Institut für Klimafolgenforschung, Potsdam, Germany, 153 pp., 2005 (in German).
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This study examines the seasonal and synoptic forcing patterns linked to debris flows occurring in the eastern Italian Alps. Results highlight that seasonal and synoptic pattern dependence is pronounced in both the debris-flow occurrence and the properties of triggering rainfall. Therefore, considering classification of debris flow events according to season and atmospheric circulation patterns can be used to improve existing warning systems that are operating on the basis of rainfall thresholds
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