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| Titel |
Numerical simulation of a tsunami event during the 1996 volcanic eruption in Karymskoye lake, Kamchatka, Russia |
| VerfasserIn |
T. Torsvik  , R. Paris, I. Didenkulova, E. Pelinovsky, A. Belousov, M. Belousova |
| 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 ; 10, no. 11 ; Nr. 10, no. 11 (2010-11-22), S.2359-2369 |
| Datensatznummer |
250008504
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| Publikation (Nr.) |
 copernicus.org/nhess-10-2359-2010.pdf |
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| Zusammenfassung |
Karymskoye caldera lake is a nearly circular body of water with a diameter of
approximately 4 km and a depth of up to 60 m. The sublacustrine,
Surtseyan-type eruption in the lake on 2–3 January 1996 included a series of
underwater explosions. A field survey conducted the following summer showed
signs of tsunami wave runup around the entire coastline of the lake, with a
maximum of 29 m runup at the north shore near the source of the eruption,
and 2–5 m runup at locations on the east and south shore far away from the
source.
The tsunami has been simulated using the numerical long wave model COULWAVE,
with input from reconstructed realistic pre-eruption bathymetry. The tsunami
source was chosen as suggested by Le Mehaute (1971) and Mirchina
and Pelinovsky (1988). The initial wave was prescribed by a
parabolic shape depression with a radius of R=200 m, and a height of
23 m at the rim of the parabola. Simulations were conducted to show
principle directions for wave propagation, wave speed and arrival time for
the leading wave group at the shore, and the distribution of wave height
throughout the lake. Estimated result for wave runup are of the same order of
magnitude as field measurements, except near the source of the eruption and
at a few locations where analysis show significant wave breaking. |
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