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Communication Dans Un Congrès Année : 2009

Sismological evidence of topographic site effects in 1909 Provence earthquake damage distribution

Anne-Marie Duval
Etienne Bertrand
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Régnier Julie
Aiham Saad
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Nathalie Glinsky
Jean-François Semblat

Résumé

During the 1909 Provence earthquake, a lot of municipalities exhibited strong variations in damage distribution. For some of them and Rognes in particular, the historical perched village suffered more damage than constructions built on the flat part of the territories. While seismologists began to observe site effect importance in earthquakes, this 1909 damage distribution became the most famous French illustration of topographic site effect. But if ray theory explains that relief can indubitably focus waves and amplify seismic signal for specific wavelength according to the location on the slope, some doubts remain about the real impact of topographic effects in 1909 damage distribution. In order to evaluate the site effect in the city of Rognes, we set up several seismological field campaigns. Numerical simulation are also conducted to be compared to the experimental results. The main issues of this work is then :
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Dates et versions

hal-03589574 , version 1 (25-02-2022)

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  • HAL Id : hal-03589574 , version 1

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Anne-Marie Duval, Etienne Bertrand, Régnier Julie, Michel Pernoud, Aiham Saad, et al.. Sismological evidence of topographic site effects in 1909 Provence earthquake damage distribution. International Conference Provence 2009, Seismic risk in moderate seismicity area: from hazard to vulnerability, Jul 2009, Aix en Provence, France. ⟨hal-03589574⟩
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