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Significance of historical records for avalanche hazard zoning in Norway

Kristensen, Krister; Harbitz, Carl Bonnevie; Harbitz, Alf
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URI
https://hdl.handle.net/11250/3083773
Date
2000
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Abstract
In avalanche hazard zoning, it is common practice to investigate the previous avalanche history for the area considered. Historical observations of avalanches serve as an aid in the classification of the terrain, and may also serve as verification of estimates of avalanche runout. Conditions influencing the avalanche occurrences may change significantly over time and it is important to take these changes into account when using historical avalanche observations in hazard ioning today. A number of the most extensive avalanches recorded in Norway, are found during the eigthteenth and nineteenth century. The catastrophes may be linked to weather as well as to socio-econornic conditions, in particular deforestation of mountain slopes. The implications of using or disregarding historical avalanche observation are shown in an example of statistical estimation of avalanche runout.
Publisher
Montana State University Library
Series
The International Snow Science Workshop (ISSW) Proceedings;

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