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Tsunamis générés par des séismes au niveau de la zone de collision entre les plaques africaine et eurasienne : Etudes de cas pour l'évaluation du risque tsunami en Méditerranée occidentale et Atlantique nord

Abstract : The main objective of this thesis is to improve the knowledge of tsunami hazard in Western Mediterranean and Northern Atlantic. It focusses on earthquake-generated tsunamis which present the advantage to be preceded by a useful precursor for the warning, that can be felt by the population: the earthquake. Two types of studies are presented, using numerical modelling. It allows to built maximum wave height maps for each scenario, determine arrival times, inundation zones and study resonance phenomenon. The first studies concern the tsunami impact induced by seismic sources (rupture parameters) proposed by previous studies (the 1755 tsunami in the West Indies or in Newfoundland and the 2003 tsunami of Zemmouri in Southern France). The second studies concern the determination of rupture scenarios able to trigger tsunamis, with respect to the geology (seismicity, focal mechanisms, GPS measurements, surface fault ruptures, etc.) and the available maregraphic data (wave heights, arrival times, periods) and field surveys data (run-up distance and elevation, destructions). Concerning this last point, the studies considered the Jijel (1856), El Asnam (1980) and Dover Strait (1580) tsunamis. These studies have been done following historical documents and tsunami deposits search, using numerical modeling with a finite difference method for tsunami propagation calculations.
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https://tel.archives-ouvertes.fr/tel-00588880
Contributor : Jean Roger Connect in order to contact the contributor
Submitted on : Tuesday, April 26, 2011 - 6:39:55 PM
Last modification on : Thursday, November 18, 2021 - 4:08:36 AM
Long-term archiving on: : Thursday, March 30, 2017 - 9:51:42 AM

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  • HAL Id : tel-00588880, version 1

Citation

Jean Roger. Tsunamis générés par des séismes au niveau de la zone de collision entre les plaques africaine et eurasienne : Etudes de cas pour l'évaluation du risque tsunami en Méditerranée occidentale et Atlantique nord. Géophysique [physics.geo-ph]. Université Pierre et Marie Curie - Paris VI, 2011. Français. ⟨tel-00588880⟩

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