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| Titel |
Amplification of the Storm Surges by Wind-Wave-Current Interactions at the North-Eastern Coast of the Bay of Biscay. |
| VerfasserIn |
A. Nicolle, M. Karpytchev, M. Benoit |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250030437
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| Zusammenfassung |
| The storm surges coming ashore in the north-eastern Bay of Biscay provoke extensive
flooding of its low-lying coasts. We present the results of hindcasting of several storm surges
observed in this region during the winter 1999-2000. The numerical model employs
the TELEMAC and TOMAWAC software to simulate the surge, tide and wave
propagation. A high resolution finite element grid is used and the model is nested
to a larger scale model of the surge, tide and wave propagation on the European
Shelf. It is demonstrated that the wave-wind-surge interactions resulting in the
wave-dependent surface and bottom stress turn out to be crucial for the accurate simulating
of the surge peaks in the region and, consequently, must be included in the flood
forecasting systems. It is also shown how the specific coupling between tidal and
wind-induced currents in shallow embayments of the NE Bay of Biscay results in the
surge oscillations with the period of several hours but different from that of the
tide. |
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