Standard spectral an d H/V ratios of seismic data in Beirut
Résumé
Historically, Beirut has been destroyed several times by earthquakes. The last devastating one was
the 551 A.D. earthquake, followed by a tsunami, causing the death of 30.000 people.In the last 10
years, many research studies have been carried outto better understand the tectonic context of
Lebanon and mapping active faults. No site effects studies had ever been conducted in Lebanon
despite the fact that peoplefrom different regions are reporting feeling seismic vibrationsfor moderate
earthquakes located 400 km away.
Trying to better understand this phenomenon in Beirut, a seismological experiment was conducted in
Beirut in 2006 with the aimto evaluate site response at 10 sites. During 5 months, ten Hathor3 stations
recording continuously connected to Lennartz 5s seismometers were installed on different geological
structures, representing almost all the soil types found in Beirut. Two of the stations were installed on
rocks (cenomanian and miocene structures) and were considered as reference sites.In total, 82
earthquakes were recorded including local (2.5
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Soumis le : vendredi 25 février 2022-17:11:58
Dernière modification le : jeudi 14 mars 2024-22:18:58
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Identifiants
- HAL Id : hal-03589647 , version 1
Citer
Marleine Brax, Pierre-Yves Bard, Anne-Marie Duval, Alexandre Sursock, Rachid Jomaa, et al.. Standard spectral an d H/V ratios of seismic data in Beirut. International Conference Provence 2009, Seismic risk in moderate seismicity area: from hazard to vulnerability, Jul 2009, Aix en Provence, France. ⟨hal-03589647⟩
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