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| Titel |
Simulation systems for tsunami wave propagation forecasting within the French tsunami warning center |
| VerfasserIn |
A. Gailler, H. Hébert, A. Loevenbruck, B. Hernandez |
| 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. 10 ; Nr. 13, no. 10 (2013-10-09), S.2465-2482 |
| Datensatznummer |
250085527
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| Publikation (Nr.) |
 copernicus.org/nhess-13-2465-2013.pdf |
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| Zusammenfassung |
| A model-based tsunami prediction system has been developed as part of the
French Tsunami Warning Center (operational since 1 July 2012). It
involves a precomputed unit source functions database (i.e., a number of
tsunami model runs that are calculated ahead of time and stored). For the
Mediterranean basin, the faults of the unit functions are placed adjacent to
each other, following the discretization of the main seismogenic faults. An
automated composite scenarios calculation tool is implemented to allow the
simulation of any tsunami propagation scenario (i.e., of any seismic
moment). Uncertainty on the magnitude of the detected event and inaccuracy
of the epicenter location are taken into account in the composite scenarios
calculation. Together with this forecasting system, another operational tool
based on real time computing is implemented as part of the French Tsunami
Warning Center. This second tsunami simulation tool takes advantage of multiprocessor
approaches and more realistic seismological parameters, once the
focal mechanism is established. Three examples of historical earthquakes are
presented, providing warning refinement compared to the rough tsunami risk
map given by the model-based decision matrix. |
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