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| Titel |
Combining inland and offshore paleotsunamis evidence: the Augusta Bay (eastern Sicily, Italy) case study |
| VerfasserIn |
A. Smedile, P. M. Martini, D. Pantosti |
| 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 ; 12, no. 8 ; Nr. 12, no. 8 (2012-08-14), S.2557-2567 |
| Datensatznummer |
250011048
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| Publikation (Nr.) |
 copernicus.org/nhess-12-2557-2012.pdf |
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| Zusammenfassung |
Offshore and inland geological evidence for multiple tsunami inundations was
found in the Augusta Bay area: (1) the main local historical
tsunamis (1908, 1693, 1169), (2) two far-generated tsunamis (i.e. Crete
365 AD and Santorini, 3600 BP), and (3) seven unknown tsunamis). Average
tsunami recurrence intervals from inland and offshore investigations of
about 550 and 320 yr, respectively were obtained for the past 4 ka. The
history of paleotsunamis from the marine record appears to be as complete as
the historical one for the past millennium, yielding an average tsunami
recurrence interval of 250 yr for the Augusta Bay. Geological data allow
also estimating a minimum tsunami inundation distance of 530 m and a
minimum run-up of 5 m. The marine record contains evidence for more
paleotsunamis with respect to the inland one because of continuous
sedimentation and better preservation of stratigraphy in the offshore with
respect to coastal areas, which are commonly affected by intermittent-erosion and
sedimentation and anthropic activities.
This work shows that the integration of geological and historical data can
provide critical information regarding the extent and age of tsunamis of the
past (e.g. inundation distance, age, and frequency), which is of immediate relevance
for tsunami hazard assessment. |
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