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Titel |
Resonance phenomena at the long wave run-up on the coast |
VerfasserIn |
A. Ezersky, D. Tiguercha, E. Pelinovsky |
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 ; 13, no. 11 ; Nr. 13, no. 11 (2013-11-05), S.2745-2752 |
Datensatznummer |
250085547
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Publikation (Nr.) |
copernicus.org/nhess-13-2745-2013.pdf |
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Zusammenfassung |
Run-up of long waves on a beach consisting of three pieces of constant but
different slopes is studied. Linear shallow-water theory is used for incoming
impulse evolution, and nonlinear corrections are obtained for the run-up
stage. It is demonstrated that bottom profile influences the run-up
characteristics and can lead to resonance effects: increase of wave height,
particle velocity, and number of oscillations. Simple parameterization of
tsunami source through an earthquake magnitude is used to calculate the
run-up height versus earthquake magnitude. It is shown that resonance effects
lead to the sufficient increase of run-up heights for the weakest
earthquakes, and a tsunami wave does not break on chosen bottom relief if the
earthquake magnitude does not exceed 7.8. |
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