 |
| Titel |
Developing fragility functions for the areas affected by the 2009 Samoa earthquake and tsunami |
| VerfasserIn |
H. Gokon, S. Koshimura, K. Imai, M. Matsuoka, Y. Namegaya, Y. Nishimura |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 14, no. 12 ; Nr. 14, no. 12 (2014-12-04), S.3231-3241 |
| Datensatznummer |
250118799
|
| Publikation (Nr.) |
 copernicus.org/nhess-14-3231-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
| Fragility functions in terms of flow depth, flow velocity and hydrodynamic
force are developed to evaluate structural vulnerability in the areas
affected by the 2009 Samoa earthquake and tsunami. First, numerical
simulations of tsunami propagation and inundation are conducted to reproduce
the features of tsunami inundation. To validate the results, flow depths
measured in field surveys and waveforms measured by Deep-ocean Assessment and
Reporting of Tsunamis (DART) gauges are utilized. Next, building damage is
investigated by visually interpreting changes between pre- and post-tsunami
high-resolution satellite images. Finally, the data related to tsunami
features and building damage are integrated using Geographic Information System (GIS), and tsunami fragility functions are developed based on the
statistical analyses. From the developed fragility functions, we
quantitatively understood the vulnerability of a coastal region in American
Samoa characterized by steep terrains and ria coasts. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|