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| Titel |
Real-time inversion of tsunamis generated by landslides |
| VerfasserIn |
C. Cecioni, A. Romano, G. Bellotti, M. Risio, P. Girolamo |
| 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. 9 ; Nr. 11, no. 9 (2011-09-22), S.2511-2520 |
| Datensatznummer |
250009675
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| Publikation (Nr.) |
 copernicus.org/nhess-11-2511-2011.pdf |
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| Zusammenfassung |
| In this paper, we test a method for forecasting in real-time the properties of
offshore propagating tsunami waves generated by landslides, with the aim of
supporting tsunami early warning systems. The method uses an inversion
procedure, that takes input data measurements of water surface elevation
at a point close to the tsunamigenic source. The measurements are used to
correct the results of pre-computed numerical simulations, reproducing the
wave field induced by different landslide scenarios. The accuracy of the
method is evaluated using the results of laboratory experiments, aimed at
studying tsunamis generated by landslides sliding along the flank of a
circular shoreline island. The paper investigates what the optimal
position is of where to measure the tsunamis, what the effects are, the
accuracy of the results, and of uncertainties on the landslide scenarios. Finally,
the method is successfully tested using partial input time series, simulating
the behaviour of the system in real-time during
the tsunami event when forecasts are updated, as the measurements become available. |
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