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| Titel |
Physical vulnerability modelling in natural hazard risk assessment |
| VerfasserIn |
J. Douglas |
| 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 ; 7, no. 2 ; Nr. 7, no. 2 (2007-04-05), S.283-288 |
| Datensatznummer |
250004452
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| Publikation (Nr.) |
 copernicus.org/nhess-7-283-2007.pdf |
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| Zusammenfassung |
An evaluation of the risk to an exposed element from a hazardous event
requires a consideration of the element's vulnerability, which expresses its
propensity to suffer damage. This concept allows the assessed level of hazard
to be translated to an estimated level of risk and is often used to evaluate
the risk from earthquakes and cyclones. However, for other natural perils,
such as mass movements, coastal erosion and volcanoes, the incorporation of
vulnerability within risk assessment is not well established and consequently
quantitative risk estimations are not often made. This impedes the study of
the relative contributions from different hazards to the overall risk at a
site.
Physical vulnerability is poorly modelled for many reasons: the cause of
human casualties (from the event itself rather than by building damage); lack
of observational data on the hazard, the elements at risk and the induced
damage; the complexity of the structural damage mechanisms; the temporal and
geographical scales; and the ability to modify the hazard level. Many of
these causes are related to the nature of the peril therefore for some
hazards, such as coastal erosion, the benefits of considering an element's
physical vulnerability may be limited. However, for hazards such as volcanoes
and mass movements the modelling of vulnerability should be improved by, for
example, following the efforts made in earthquake risk assessment. For
example, additional observational data on induced building damage and the
hazardous event should be routinely collected and correlated and also
numerical modelling of building behaviour during a damaging event should be
attempted. |
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