Avalanche Hazard Mitigation Strategies Assessed by Cost Effectiveness Analyses and Cost Benefit Analyses—evidence from Davos, Switzerland

This paper demonstrates the application of cost effectiveness analysis and cost benefit analysis to alternative avalanche risk reduction strategies in Davos, Switzerland. The advantages as well as limitations of such analysis for natural hazards planning are discussed with respect to 16 avalanche risk reduction strategies. Scenarios include risk reduction measures that represent the main approaches to natural hazards planning in Switzerland, such as technical, organisational, and land use planning measures. The methodologies used outline how concepts and techniques from risk analysis, hazard mapping, Geographic Information System, and economics can be interdisciplinary combined. The results suggest important considerations, such as possible sources of uncertainty due to different choices in the calculation of cost effectiveness ratio and net present value. Given the parameters and assumptions, it seems as if the current approach to avalanche risk reduction in the study area approximates to economic and cost efficiency and serves the aim of reducing risk to human fatalities.

[1]  H. Elsasser,et al.  Indirekte Auswirkungen von Naturgefahren auf den Tourismus : das Beispiel des Lawinenwinters 1999 in der Schweiz , 2002 .

[2]  Christian Wilhelm.  Wirtschaftlichkeit im Lawinenschutz , 1996 .

[3]  Michael Bründl,et al.  Damage Potential and Losses Resulting from Snow Avalanches in Settlements of the Canton of Grisons, Switzerland , 2005 .

[4]  Michael Bründl,et al.  IFKIS - a basis for managing avalanche risk in settlements and on roads in Switzerland , 2004 .

[5]  A. Leiter,et al.  Dying in an Avalanche: Current Risks and Valuation , 2005 .

[6]  P. Bartelt,et al.  Avalanche hazard mapping using numerical Voellmy-Fluid models , 1998 .

[7]  N. Hanley,et al.  Cost–Benefit Analysis and the Environment , 1994 .

[8]  Martin Schneebeli,et al.  Temporal Trend and Spatial Distribution of Avalanche Activity during the Last 50 Years in Switzerland , 2002 .

[9]  F. Savi,et al.  Effects of Release Conditions Uncertainty on Avalanche Hazard Mapping , 2002 .

[10]  N. Hanley,et al.  Cost–Benefit Analysis and the Environment , 1993 .

[11]  C. D. Gamper,et al.  A conceptual approach to the use of Cost Benefit and Multi Criteria Analysis in natural hazard management , 2006 .

[12]  D. Varnes.  Landslide hazard zonation: A review of principles and practice , 1984 .

[13]  Reinhard Mechler,et al.  Natural disaster risk and cost-benefit analysis , 2003 .

[14]  Andreas Paul Zischg,et al.  The long-term development of avalanche risk in settlements considering the temporal variability of damage potential , 2005 .

[15]  Johann Stötter,et al.  Development of avalanche risk between 1950 and 2000 in the Municipality of Davos, Switzerland , 2004 .

[16]  W. Groot,et al.  Money for health: the equivalent variation of cardiovascular diseases. , 2004, Health economics.

[17]  Switzerland. Eidgenössisches Statistisches Bureau,et al.  Statistisches Jahrbuch der Schweiz , 1891 .

[18]  Andreas Paul Zischg,et al.  Avalanche related damage potential - changes of persons and mobile values since the mid-twentieth century, case study Galtür , 2005 .

[19]  E. J. Mishan,et al.  Cost benefit analysis: An informal introduction, , 1971 .

[20]  E. Quah,et al.  Cost-Benefit Analysis , 1972 .

[21]  Sven Fuchs,et al.  The net benefit of public expenditures on avalanche defence structures in the municipality of Davos , Switzerland , 2005 .