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| Titel |
Developing tsunami fragility curves based on the satellite remote sensing and the numerical modeling of the 2004 Indian Ocean tsunami in Thailand |
| VerfasserIn |
A. Suppasri, S. Koshimura, F. Imamura |
| 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. 1 ; Nr. 11, no. 1 (2011-01-20), S.173-189 |
| Datensatznummer |
250009046
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| Publikation (Nr.) |
 copernicus.org/nhess-11-173-2011.pdf |
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| Zusammenfassung |
| The 2004 Indian Ocean tsunami damaged and destroyed numerous buildings and
houses in Thailand. Estimation of tsunami impact to buildings from this
event and evaluation of the potential risks are important but still in
progress. The tsunami fragility curve is a function used to estimate the
structural fragility against tsunami hazards. This study was undertaken to
develop fragility curves using visual inspection of high-resolution
satellite images (IKONOS) taken before and after tsunami events to classify
whether the buildings were destroyed or not based on the remaining roof.
Then, a tsunami inundation model is created to reconstruct the tsunami
features such as inundation depth, current velocity, and hydrodynamic force
of the event. It is assumed that the fragility curves are expressed as
normal or lognormal distribution functions and the estimation of the median
and log-standard deviation is performed using least square fitting. From the
results, the developed fragility curves for different types of building
materials (mixed type, reinforced concrete and wood) show consistent
performance in damage probability and when compared to the existing curves
for other locations. |
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