| 000 -LEADER |
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| fixed length control field |
01701pab a2200181 454500 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
180718b2002 xxu||||| |||| 00| 0 eng d |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Laternser, Martin |
| 245 ## - TITLE STATEMENT |
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| Title |
Temporal trend and spatial distribution of avalanche activity during the last 50 years in Switzerland |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Date of publication, distribution, etc. |
2002 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
p.201-30. |
| 362 ## - DATES OF PUBLICATION AND/OR SEQUENTIAL DESIGNATION |
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| Dates of publication and/or sequential designation |
Nov |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Avalanche observations are an important factor for operational avalanche warning and the main parameter to carry out an objective verification of the avalanche bulletin in retrospect. For the first time, a 50-year long series of avalanche activity data of 84 Swiss avanche observation stations is analysed and discussed. After careful data preparation a regional avalanche activity index (RAAI) for seven snow-climatological regions of Switzerland was developed. Using different statistical descriptors, we were unable to detect a long-term change in avalanche activity, which stands in contrast to a significant increase of winter percipitation. The comparison of the RAAI with a comprehensive database for destructives (DADB) resulted in a low correlation. This shows clearly the difficulties involved in determining a good measure for specifying the true avalanche activity. Depending on the degree of the avalanche activity DADB and avalanche observations represent the avalanche activity differently and overlap. Suggestions are given for the improvement of the ongoing avalanche observation programme in order to achieve an overall consistent and reliable data set in future. - Reproduce. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Avalanches - Switzerland |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Avalanches |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Schneebeli, Martin |
| 773 ## - HOST ITEM ENTRY |
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| Main entry heading |
Natural Hazards |
| 909 ## - |
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| -- |
54751 |
