 |
| Titel |
Tsunami hazard assessment in the southern Colombian Pacific basin and a proposal to regenerate a previous barrier island as protection |
| VerfasserIn |
L. J. Otero, J. C. Restrepo, M. González |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 14, no. 5 ; Nr. 14, no. 5 (2014-05-19), S.1155-1168 |
| Datensatznummer |
250118439
|
| Publikation (Nr.) |
 copernicus.org/nhess-14-1155-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
| In this study, the tsunami hazard posed to 120 000 inhabitants of Tumaco
(Colombia) is assessed, and an evaluation and analysis of regenerating the
previous El Guano Island for tsunami protection is conducted. El Guano
Island was a sandy barrier island in front of the city of Tumaco until its
disappearance during the tsunami of 1979; the island is believed to have
played a protective role, substantially reducing the scale of the disaster.
The analysis is conducted by identifying seismotectonic parameters and focal
mechanisms of tsunami generation in the area, determining seven potential
generation sources, applying a numerical model for tsunami generation and
propagation, and evaluating the effect of tsunamis on Tumaco. The results
show that in the current situation, this area is vulnerable to impact and
flooding by tsunamis originating nearby. El Guano Island was found to
markedly reduce flood levels and the energy flux of tsunami waves in Tumaco
during the 1979 tsunami. By reducing the risk of flooding due to tsunamis, the
regeneration and morphological modification of El Guano Island would help to
protect Tumaco. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|