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| Titel |
Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula |
| VerfasserIn |
D. F. Rasilla Álvarez, J. C. García Codron |
| 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. 2 ; Nr. 11, no. 2 (2011-02-23), S.613-625 |
| Datensatznummer |
250009172
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| Publikation (Nr.) |
 copernicus.org/nhess-11-613-2011.pdf |
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| Zusammenfassung |
| This paper assesses the evolution of storminess along the northern coast of
the Iberian Peninsula through the calculation of extreme (1%) Total Water
Levels (eTWL) on both observed (tide gauge and buoy data) and hindcasted
(SIMAR-44) data. Those events were first identified and then
characterized in terms of oceanographic parameters and atmospheric
circulation features. Additionally, an analysis of the long-term trends in
both types of data was performed. Most of the events correspond to a rough
wave climate and moderate storm surges, linked to extratropical disturbances
following a northern track. While local atmospheric conditions seem to be
evolving towards lesser storminess, their impact has been balanced by the
favorable exposure of the northern coast of the Iberian Peninsula to the
increasing frequency and strength of distant disturbances crossing the North
Atlantic. This evolution is also correctly reproduced by the simulated
long-term evolution of the forcing component (meteorological sea level
residuals and wave run up) of the Total Water Level values calculated from
the SIMAR 44 database, since sea level residuals have been experiencing a
reduction while waves are arriving with longer periods. Finally, the
addition of the rate of relative sea level trend to the temporal evolution
of the atmospheric forcing component of the Total Water Level values is
enough to simulate more frequent and persistent eTWL. |
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