期刊
BULLETIN OF EARTHQUAKE ENGINEERING
卷 7, 期 1, 页码 71-111出版社
SPRINGER
DOI: 10.1007/s10518-008-9083-4
关键词
Pisco earthquake; Peru-Chile Trench; Subduction ground-motions; Ground-motion prediction; Duration; Source complexity
资金
- European Union
- COLFUTURO programme
- Ove Arup and Partners
AM(w) 7.9 earthquake event occurred on 15 August 2007 off the coast of central Peru, 60 km west of the city of Pisco. This event is associated with subduction processes at the interface of the Nazca and South American plates, and was characterised by a complex source mechanism involving rupture on two main asperities, with unilateral rupture propagation to the southeast. The rupture process is clearly reflected in the ground motions recorded during this event, which include two separate episodes of strong shaking. The event triggered 18 accelerographic stations; the recordings are examined in terms of their characteristics and compared to the predictions of ground-motion prediction equations for subduction environments, using the maximum-likelihood-based method of Scherbaum et al. (Bull Seismol Soc Am 94(6): 2164-2185, 2004). Additionally, macroseismic observations and damage patterns are examined and discussed in the light of local construction practices, drawing on field observations gathered during the post-earthquake reconnaissance missions.
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