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| Titel |
Tsunami hazard for the city of Catania, eastern Sicily, Italy, assessed by means of Worst-case Credible Tsunami Scenario Analysis (WCTSA) |
| VerfasserIn |
R. Tonini, A. Armigliato, G. Pagnoni, F. Zaniboni, S. Tinti |
| 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. 5 ; Nr. 11, no. 5 (2011-05-02), S.1217-1232 |
| Datensatznummer |
250009405
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| Publikation (Nr.) |
 copernicus.org/nhess-11-1217-2011.pdf |
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| Zusammenfassung |
| Eastern Sicily is one of the coastal areas most exposed to earthquakes and
tsunamis in Italy. The city of Catania that developed between the eastern base of Etna volcano
and the Ionian Sea is, together with the neighbour coastal belt, under the
strong menace of tsunamis. This paper addresses the estimation of the tsunami
hazard for the city of Catania by using the technique of the Worst-case
Credible Tsunami Scenario Analysis (WCTSA) and is focused on a target area
including the Catania harbour and the beach called La Plaia where many human
activities develop and many important structures are present. The aim of the
work is to provide a detailed tsunami hazard analysis, firstly by building
scenarios that are proposed on the basis of tectonic considerations and of
the largest historical events that hit the city in the past, and then by
combining all the information deriving from single scenarios into a unique
aggregated scenario that can be viewed as the worst virtual
scenario. Scenarios have been calculated by means of numerical simulations
on computational grids of different resolutions, passing from 3 km on a
regional scale to 40 m in the target area. La Plaia beach results to be the
area most exposed to tsunami inundation, with inland penetration up to
hundreds of meters. The harbour turns out to be more exposed to tsunami waves
with low frequencies: in particular, it is found that the major contribution
to the hazard in the harbour is due to a tsunami from a remote source, which
propagates with much longer periods than tsunamis from local sources. This
work has been performed in the framework of the EU-funded project SCHEMA. |
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