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| Titel |
A GIS method for assessment of rock slide tsunami hazard in all Norwegian lakes and reservoirs |
| VerfasserIn |
B. Romstad, C. B. Harbitz, U. Domaas |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 9, no. 2 ; Nr. 9, no. 2 (2009-03-17), S.353-364 |
| Datensatznummer |
250006705
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| Publikation (Nr.) |
 copernicus.org/nhess-9-353-2009.pdf |
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| Zusammenfassung |
| An evaluation of rock slide tsunami hazard is applied to all Norwegian lakes
larger than 0.1 km2 based on their topographical setting. The analysis
results in a topographic rock slide potential score that indicates the
relative hazard in each lake. Even though the score value each lake
receives should be interpreted with caution, the distribution of score values
shows that we are able to make a clear distinction between lakes with a high
vs. lakes with a low hazard. The results also show a clustering of threatened
lakes in parts of Western Norway as well as some locations in Northern
Norway. This makes the results useful as a tool for focusing further studies
on regions or specific lakes that received high scores. The results also show
how the method may be used for more detailed analysis of a given lake (or
fjord). Maps can be produced that may serve as a guide when carrying out
field campaigns or when designing scenarios for numerical simulations of
tsunamis in the lake. It should be emphasised that the rock slide potential
reported for each lake is based on the topographical setting alone and hence,
does not represent the actual probability of rock slides into the lakes. For
a given area, more detailed investigations of the geology, triggering factors
and frequency of previous rock slide events should be carried out before
definite statements about the actual hazard can be made. |
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