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| Titel |
Evidence of a previously unrecorded local tsunami, 13 April 2010, Cook Islands: implications for Pacific Island countries |
| VerfasserIn |
J. Goff |
| 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 (2011-05-13), S.1371-1379 |
| Datensatznummer |
250009418
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| Publikation (Nr.) |
 copernicus.org/nhess-11-1371-2011.pdf |
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| Zusammenfassung |
| Tsunami hazard assessments for Pacific Islands Countries (PICs)
tend to focus on subduction zone sources. It is generally recognised that
while volcanic-related tsunamigenic sources exist, they are probably only of
minor relevance to the overall hazardscape of the Pacific. This paper
outlines the evidence for a previously unrecorded local tsunami that struck
the uninhabited south coast of Mangaia, Cook Islands, on 13 April 2010. The
tsunami had a maximum inundation of 100 m inland and a runup of 12 m a.s.l.
This event was most probably caused by a small submarine slope failure, the
most recent of an unknown number of previous inundations. Since most PICs
have a volcanic origin, it is suggested that current perceptions about the
local and regional significance of such events is inaccurate. A review of
volcanic-related tsunamigenic sources throughout the Pacific reveals a
wealth of data concerning submarine slope failures in particular and a more
general background of active volcanism. These sources are as relevant to
PICs close to or far away from subduction zones. As populations grow and the
coastlines of many PICs and those on the edge of the Pacific Ocean become
increasing occupied, the likelihood for loss of life from these events
increases. |
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