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| Titel |
Evaluation of far-field tsunami hazard in French Polynesia based on historical data and numerical simulations |
| VerfasserIn |
A. Sladen, H. Hébert, F. Schindelé, D. Reymond |
| 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 ; 7, no. 2 ; Nr. 7, no. 2 (2007-02-27), S.195-206 |
| Datensatznummer |
250004444
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| Publikation (Nr.) |
 copernicus.org/nhess-7-195-2007.pdf |
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| Zusammenfassung |
The first tsunami hazard map of French Polynesia is presented here on the
basis of historical data, and numerical simulations.
French Polynesia, because of its central position in the most tsunami prone
ocean, the Pacific, is strongly exposed to far-field tsunamis. As no previous
study on the area had been conducted, we compiled catalogues of all the
historical observations (14 events), and tide gauges records (69 marigrams).
The catalogues emphasise the higher hazard associated to the Marquesas
archipelago, but also the deficiency of robust data in most other parts of
French Polynesia. The recourse to numerical simulations allowed us to
complement the existing records, and to test tsunami scenarii over different
bathymetry and topography configurations, representative of the diversity of
islands in French Polynesia. The tsunami hazard map assigns a high exposure
level to the Marquesas and the island of Rurutu. Other islands of the Austral,
and the Gambier archipelago have a elevated level of exposure, as well as
three islands of Society: Tahiti, Moorea, and Huahine. All other islands of
French Polynesia are considered as moderately exposed. |
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