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| Titel |
Tsunami hazard in the Black Sea and the Azov Sea: a new tsunami catalogue |
| VerfasserIn |
G. A. Papadopoulos, G. Diakogianni, A. Fokaefs, B. Ranguelov |
| 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. 3 ; Nr. 11, no. 3 (2011-03-25), S.945-963 |
| Datensatznummer |
250009274
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| Publikation (Nr.) |
 copernicus.org/nhess-11-945-2011.pdf |
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| Zusammenfassung |
| Data on tsunamis occurring in the Black Sea and the Azov Sea from
antiquity up to the present were updated, critically evaluated and compiled
in the standard format developed since the 90's for the New European Tsunami
Catalogue. Twenty nine events were examined but three of them, supposedly
occurring in 557 AD, 815 AD and 1341 or 1343, were very likely falsely
reported. Most of the remaining 26 events were generated in Crimea, offshore
Bulgaria as well as offshore North Anatolia. For each of the 26 events
examined, 22 events were classified as reliable ones receiving a score of 3 or 4 on
a 4-grade reliability scale. Most of them were caused by earthquakes, such as
the key event 544/545 of offshore Varna, but a few others were attributed
either to aseismic earth slumps or to unknown causes. The tsunami intensity
was estimated using the traditional 6-grade scale and the new 12-grade scale
introduced by Papadopoulos and Imamura (2001). From 544/545 up to now, only
two reliable events of high intensity K ≥ 7 have been reported, which very
roughly indicates that the mean repeat time is ∼ 750 years. Five
reliable tsunamis of moderate intensity 4 ≤ K < 7 have been observed from 1650
up to the present, which implies a recurrence of 72 years on the average.
Although these calculations were based on a very small statistical sample of
tsunami events, the repeat times found are consistent with the theoretical
expectations from size-frequency relations. However, in the Black Sea there
is no evidence of tsunamis of very high intensity (K ∼ 10) such as the
AD 365, 1303 and 1956 ones associated with large earthquakes occurring along
the Hellenic arc and trench, Greece, or the 1908 one in Messina strait,
Italy. This observation, along with the relatively low tsunami frequency,
indicates that the tsunami hazard in the Black Sea is low to moderate but not
negligible. The tsunami hazard in the Azov Sea is very low because of the
very low seismicity but also because of the shallow water prevailing there.
In fact, only three possible tsunami events have been reported in the Azov Sea. |
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