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| Titel |
Inventory of uncertainties associated with the process of tsunami damage assessment on buildings (SCHEMA FP6 EC co-funded project) |
| VerfasserIn |
A. Gardi, N. Valencia, R. Guillande, C. André |
| 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 ; 11, no. 3 ; Nr. 11, no. 3 (2011-03-18), S.883-893 |
| Datensatznummer |
250009268
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| Publikation (Nr.) |
 copernicus.org/nhess-11-883-2011.pdf |
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| Zusammenfassung |
| Within the framework of the SCHEMA FP6 EC co-funded project (http://www.schemaproject.org),
we have identified the sources of errors/uncertainties that can be introduced at
several steps of the damage assessment process, from post-disaster field
measures up to hazard and damages maps production. Errors, for instance,
are introduced when collecting post-disaster observations owing to different types
of instruments/methods, water marks considered, tide correction, etc.: in
extreme cases, differences of meters can be found between water heights data
published by different teams for the same locations. Much uncertainty comes
from difficulties in identifying and characterizing the potential tsunami
sources and from numerical modelling. Moreover, the resolution of the
employed Digital Terrain Models can noticeably affect the predicted
inundation extent. We have also verified that the consistency of the computations
on the long term varies sensitively depending on the code, raising the
problem of results reliability for emergency management in dangerous coasts
exposed to repeated waves. In addition, damage assessment is performed
using damage functions linking the mean damage level on buildings with the
maximum water elevation measured in the field without considering other
tsunami parameters such as stream velocity. Finally, we examined
uncertainties introduced in hazard and vulnerability mapping due to
cartographic processing. |
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