Environmental Geology

, Volume 51, Issue 1, pp 1–13 | Cite as

Area-scale landslide hazard and risk assessment

  • Roberto W. Romeo
  • Mario Floris
  • Francesco Veneri
Original Article

Abstract

The paper deals with a methodology for quantitative landslide hazard and risk assessments over wide-scale areas. The approach was designed to fulfil the following requirements: (1) rapid investigation of large study areas; (2) use of elementary information, in order to satisfy the first requirement and to ensure validation, repetition and real time updating of the assessments every time new data are available; (3) computation of the landslide frequency of occurrence, in order to compare objectively different hazard conditions and to minimize references to qualitative hazard attributes such as activity states. The idea of multi-temporal analysis set forth by Cardinali et al. (Nat Hazards Earth Syst Sci 2:57–72, 2002), has been stressed here to compute average recurrence time for individual landslides and to forecast their behaviour within reference time periods. The method is based on the observation of the landslide activity through aerial-photo surveys carried out in several time steps. The output is given by a landslide hazard map showing the mean return period of landslides reactivation. Assessing the hazard in a quantitative way allows for estimating quantitatively the risk as well; thus, the probability of the exposed elements (such as people and real estates) to suffer damages due to the occurrence of landslides can be calculated. The methodology here presented is illustrated with reference to a sample area in Central Italy (Umbria region), for which both the landslide hazard and risk for the human life are analysed and computed. Results show the powerful quantitative approach for assessing the exposure of human activities to the landslide threat for a best choice of the countermeasures needed to mitigate the risk.

Keywords

Landslide Activity Hazard Risk Mapping Central Italy 

References

  1. AGS (2000) Landslide risk management concepts and guidelines. Aust Geomech 35:49–92Google Scholar
  2. Basilici G (1997) Sedimentary facies in an extensional and deep-lacustrine depositional system: the Pliocene Tiberino Basin, Central Italy. Sediment Geol 109:73–94CrossRefGoogle Scholar
  3. Baynes FJ, Lee M (1998) Geomorphology in landslide risk analysis, an interim report. In: Moore DP, Hungr O (eds) Proceedings of the eighth congress of the International Association of engineering geologists, Balkema, Rotterdam, pp 1129–1136Google Scholar
  4. Canuti P, Casagli N (1996) Considerazioni sulla valutazione del rischio di frana. Italian National Research Council, Publication CNR/GNDCI N. 846 p 57Google Scholar
  5. Cardinali M, Reichenbach P, Guzzetti F, Ardizzone F, Antonimi G, Galli M, Cacciano M, Castellani M, Salvati P (2002) A geomorphological approach to the estimation of landslide hazards and risks in Umbria, Central Italy. Nat Hazards Earth Syst Sci 2:57–72CrossRefGoogle Scholar
  6. Carrara A, D’Elia B, Semenza E (1985) Classificazione e nomenclatura dei fenomeni franosi. Geologia Applicata e Idrogeologia 20:223–243Google Scholar
  7. Carrara A, Carton A, Dramis F, Panizza M, Prestininzi A (1987) Cartografia della pericolosità connessa ai fenomeni d’instabilità dei versanti. Bollettino Società Geologica Italiana 106:199–221Google Scholar
  8. Carrara A, Crosta G, Frattini P (2003) Geomorphological and historical data in assessing landslide hazard. Earth Surf Processes Landforms 28:1125–1142CrossRefGoogle Scholar
  9. Catenacci V (1992) Il dissesto geologico e geoambientale in Italia dal dopoguerra al 1990. Memorie Descrittive della Carta Geologica d’Italia, Servizio Geologico Nazionale, vol. 47, 301 ppGoogle Scholar
  10. Chowdhury R, Flentje P (2003) Role of slope reliability analysis in landslide risk management. Bull Eng Geol Environ 62:41–46Google Scholar
  11. Coe JA, Michael JA, Crovelli RA, Savage WZ, Laprade WT, Nashem WD (2004) Probabilistic assessment of precipitation-triggered landslides using historical records of landslide occurrence, Seattle, Washington. Environ Eng Geosci 10(2):103–122CrossRefGoogle Scholar
  12. Crovelli RA (2000) Probability models for estimation of number and costs of landslides. USGS OF-Report 00–249Google Scholar
  13. Cruden DM (1997) Estimating the risks from landslides using historical data. In: Cruden DM, Fell R (eds) Landslide risk assessment. Balkema, Rotterdam, pp 177–183Google Scholar
  14. Cruden DM, Varnes DJ (1996) Landslides types and processes. In: Turner K, Schuster RL (eds) Landslides investigation and mitigation, transportation research board special report NRC, Washington, 247:36–75Google Scholar
  15. Del Prete M, Giaccari E, Trisorio-Liuzzi G (1992) Rischio da frane intermittenti a cinematica lenta nelle aree montuose e collinari urbanizzate della Basilicata. Italian National Research Council, Publication CNR/GNDCI N. 841, 84 ppGoogle Scholar
  16. Einstein HH (1988) Landslide risk assessment procedure. In: Proceedings 5th international symposium on landslides, Lausanne, pp. 1075–1090Google Scholar
  17. Evans SG (1997) Fatal landslides and landslide risk in Canada. In: Cruden DM, Fell R (eds) Landslide risk assessment. Balkema, Rotterdam, pp 185–196Google Scholar
  18. Fell R (1994) Landslide risk assessment and acceptable risk. Can Geotechn J 31:261–272CrossRefGoogle Scholar
  19. Fell R, Hartford D (1997) Landslide risk management. In: Cruden DM, Fell R (eds) Landslide risk assessment, Balkema, Rotterdam, pp 51–109Google Scholar
  20. Foster MA, Fell R, Spannagle M (1998) Analysis of embankment dam incidents. UNICIV report no. R-374, The University of New South Wales, Sydney 2052. ISBN: 85841 3493Google Scholar
  21. Genevois R, Romeo RW (2003) Probability of failure occurrence and recurrence in rock slopes stability analysis. Int J Geomach ASCE 3:34–42CrossRefGoogle Scholar
  22. Guzzetti F (2000) Landslide fatalities and the evaluation of landslide risk in Italy. Eng Geol 58:89–107CrossRefGoogle Scholar
  23. Hungr O (1997). Some methods of landslide hazard intensity mapping. In: Cruden DM, Fell R (eds) Landslide risk assessment. Balkema, Rotterdam pp 215–226Google Scholar
  24. Jibson RW, Harp EL, Michael JA (2000) A method for producing digital probabilistic seismic landslide hazard maps. Eng Geol 58:271–289CrossRefGoogle Scholar
  25. Kim SK, Hong WP, Kim YM (1992) Prediction of rainfall-triggered landslides in Korea. In: Landslides, Proceedings of the sixth international symposium on landslides, Christchurch, New Zealand. Balkema, RotterdamGoogle Scholar
  26. Li KS (1992) A point estimate method for calculating the reliability index of slopes. In: Proceedings of 6th Australia–New Zealand conference on geomechanics, Christchurch, pp 448–451Google Scholar
  27. Morgan GC (1997) A regulatory perspective on slope hazards and associated risks to life. In: Cruden DM, Fell R (eds) Landslide risk assessment. Balkema, Rotterdam, pp 285–295Google Scholar
  28. Morgenstern NR (1997) Toward landslide risk assessment in practice. In: Cruden DM, Fell R (eds) Landslide risk assessment. Balkema, Rotterdam, pp 15–23Google Scholar
  29. Riddolls & Grocott Ltd. (1999) Quantitative risk assessment methods for determining slope stability risk in the building industry. Branz study report 83, New Zealand, p 38Google Scholar
  30. Varnes DJ (1984) Landslide hazard zonation: a review of principles and practice. Natural Hazards, vol 3, Paris, France. UNESCO, 63 ppGoogle Scholar
  31. Wong HN, Ho KS, Chan YC (1997) Assessment of consequence of landslides. In: Cruden DM, Fell R (eds) Landslide risk assessment. Balkema, Rotterdam, pp 111–149Google Scholar
  32. WP/WLI (1993) A suggested method for describing the activity of a landslide. Bull Int Assoc Eng Geol 47:53–57CrossRefGoogle Scholar
  33. Wu TH, Abdel-Latif A (2000) Prediction and mapping of landslide hazard. Can Geotech J 37:781–795CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Roberto W. Romeo
    • 1
  • Mario Floris
    • 2
  • Francesco Veneri
    • 3
  1. 1.Research Centre on Natural HazardsUniversity of Urbino ‘Carlo Bo’UrbinoItaly
  2. 2.Research Centre on Geologic RisksUniversity of Rome ‘La Sapienza’ValmontoneItaly
  3. 3.Institute of Engineering GeologyUniversity of Urbino ‘Carlo Bo’UrbinoItaly

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