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| Titel |
Study of tsunami propagation in the Ligurian Sea |
| VerfasserIn |
E. Pelinovsky, C. Kharif, I. Riabov, M. Francius |
| 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 ; 1, no. 4 ; Nr. 1, no. 4, S.195-201 |
| Datensatznummer |
250000224
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| Publikation (Nr.) |
 copernicus.org/nhess-1-195-2001.pdf |
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| Zusammenfassung |
| Tsunami
propagation is analyzed for the Ligurian Sea with particular attention on
the French coasts of the Mediterranean. Historical data of tsunami
manifestation on the French coast are analyzed for the period 2000 B.C.–1991
A.D. Numerical simulations of potential and historical tsunamis in the
Ligurian Sea are done in the context of the nonlinear shallow water
theory. Tsunami wave heights as well as their distribution function is
calculated for historical tsunamis and it is shown that the log-normal
distribution describes reasonably the simulated data. This demonstrates
the particular role of bottom irregularities for the wave height
distribution function near the coastlines. Also, spectral analysis of
numerical tide-gauge records is done for potential tsunamis, revealing the
complex resonant interactions between the tsunami waves and the bottom
oscillations. It is shown that for an earthquake magnitude of 6.8
(averaged value for the Mediterranean Sea) the tsunami phenomenon has a
very local character but with long duration. For sources located near the
steep continental slope in the vicinity of the French-Italian Rivera, the
tsunami tide-gauge records in the vicinity of Cannes – Imperia present
irregular oscillations with a characteristic period of 20–30 min and a
total duration of 10–20 h. For the western French coasts the amplitudes
are significantly less with characteristic low-frequency oscillations
(period of 40 min–1 h). |
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