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Definition of Rainfall Thresholds Triggering Landslides in Slovenia

  • Ascanio RosiEmail author
  • Tina Peternel
  • Mateja Jemec-Auflič
  • Marko Komac
  • Nicola Casagli
Conference paper

Abstract

In this paper the definition of rainfall thresholds for rainfall-induced landslides in Slovenia is presented. The thresholds have been calculated by collecting approximately 900 landslide data and the relative rainfall amounts, which have been collected from 41 rain gauges all over the country. The thresholds have been defined by the use of an existing procedure, developed for a test site with very different geological and climatic characteristics (Tuscany, central Italy). A single national threshold has been firstly defined, subsequently the country was divided into four zones, on the basis of major the river basins and a single threshold has been calculated for each of them. The effectiveness of the thresholds has been verified by the use of several statistical parameters and it resulted in quite good performances, even if with some uncertainties, probably due to the quality of the available data. Beside the setting of a threshold system, usable for civil protection purposes at national scale, an additional outcome of this work was the possibility of applying, with good results, a methodology defined for another region, therefore testing its degree of exportability in different settings.

Keywords

Landslide Rainfall threshold Slovenia 

References

  1. Aleotti P (2004) A warning system for rainfall-induced shallow failures. Eng Geol 73:247–265CrossRefGoogle Scholar
  2. ARSO (2007) Mean annual precipitation sum. Ministry for environment and spatial planning. Environmental Agency of the Republic of Slovenia. http://www.arso.gov.si/vreme/podnebje/karte/karta4028.html. Accessed 20 July 2015
  3. Bezak N, Šraj M, Mikoš M (2016) Copula-based IDF curves and empirical rainfall thresholds for flash floods and rainfall-induced landslides. J Hydrol. doi: 10.1016/j.jhydrol.2016.02.058 Google Scholar
  4. Bernard Vukadin B, Kovač N (2008) Environment in the palm of your hand: Slovenia. Ministry of the environment and spatial planning, environmental agency of the Republic of Slovenia, LjubljanaGoogle Scholar
  5. Caine N (1980) The rainfall intensity—duration control of shallow landslides and debris flows. Geogr Ann 62:23–27CrossRefGoogle Scholar
  6. Jemec Auflič M, Komac M (2011) Rainfall patterns for shallow landsliding in perialpine Slovenia. Nat Hazards 67(3):1011–1023. doi: 10.1007/s11069-011-9882-9 CrossRefGoogle Scholar
  7. Komac M, Šinigoj J, Jemec Auflič M (2014) A national warning system for rainfall-induced landslides in Slovenia. In: Sassa K, Canuti P, Yin Y (eds) Landslide science for a safer geoenvironment: methods of landslide studies. Springer, Berlin, pp 577–582CrossRefGoogle Scholar
  8. Logar J, Fifer Bizjak K, Kočevar M, Mikoš M, Ribičič M, Majes B (2005) History and present state of the Slano Blato landslide. Nat Hazards Earth Syst Sci 5:447–457CrossRefGoogle Scholar
  9. Martelloni G, Segoni S, Lagomarsino D, Fanti R, Catani F (2013) Snow accumulation/melting model (SAMM) for integrated use in regional scale landslide early warning systems. Hydrol Earth Syst Sci 17:1229–1240Google Scholar
  10. Mikoš M, Četina M, Brilly M (2004) Hydrologic conditions responsible for triggering the Stože landslide, Slovenia. Eng Geol 73(3/4):193–213Google Scholar
  11. Rosi A, Segoni S, Catani F, Casagli N (2012) Statistical and environmental analyses for the definition of a regional rainfall thresholds system for landslide triggering in Tuscany (Italy). J Geogr Sci 22(4):617–629CrossRefGoogle Scholar
  12. Rosi A, Lagomarsino D, Rossi G, Segoni S, Battistini A, Casagli N (2015) Updating EWS rainfall thresholds for the triggering of landslides. Nat Hazards 78:297–308CrossRefGoogle Scholar
  13. Segoni S, Rossi G, Rosi A, Catani F (2014a) Landslides triggered by rainfall: a semi-automated procedure to define consistent intensity—duration thresholds. Comput Geosci 63:123–131Google Scholar
  14. Segoni S, Rossi G, Rosi A, Catani F, Casagli N (2014b) Analyzing the relationship between rainfalls and landslides to define a mosaic of triggering thresholds for regional scale warning systems. Nat Hazards Earth Syst Sci 14:2637–2648Google Scholar
  15. Segoni S, Battistini A, Rossi G, Rosi A, Lagomarsino D, Ca-tani F, Moretti S, Casagli N (2015) Technical note: an operational landslide early warning system at regional scale based on space–time-variable rainfall thresholds. Nat Hazards Earth Syst Sci 15:853–861CrossRefGoogle Scholar
  16. Tiranti D, Rabuffetti D (2010) Estimation of rainfall thresholds triggering shallow landslides for an operational warning system implementation. Landslides 7:471–481CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Ascanio Rosi
    • 1
    Email author
  • Tina Peternel
    • 2
  • Mateja Jemec-Auflič
    • 3
  • Marko Komac
    • 3
  • Nicola Casagli
    • 1
  1. 1.Department of Earth SciencesUniversity of FlorenceFlorenceItaly
  2. 2.Geological Survey of SloveniaLjubljanaSlovenia
  3. 3.Marko Komac s.p.LjubljanaSlovenia

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