Selection of a Global Set of GMPEs for the GEM-PEER Global GMPEs Project

Jonathan P. Stewart (1) , John Douglas (2) , Carola Di Alessandro (3) , Yousef Bozorgnia (4) , N.A. Abrahamson (4) , David M. Boore (5) , Kenneth W. Campbell (6) , Elise Delavaud (7) , Mustafa Erdik (8) , Peter J. Stafford (9)

1 UCLA - University of California [Los Angeles]
2 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
3 Pacific Earthquake Engineering Research Center (PEER)
4 Pacific Earthquake Engineering Research Center
5 USGS - United States Geological Survey [Reston]
6 EQECAT Inc.
7 Swiss Seismological Service, Institute of Geophysics
8 KOERI
9 Department of Civil and Environmental Engineering [Imperial College London]

Ground-motion prediction equations (GMPEs) relate a ground-motion parameter (e.g. peak ground acceleration) to a set of explanatory variables describing the source, wave propagation path and site conditions. In the past five decades many hundreds of GMPEs for the prediction of PGA and linear elastic response spectral ordinates have been published. An accompanying paper discusses the pre-selection of GMPEs undertaken within the framework of the Global Earthquake Model (GEM) Global GMPEs project, coordinated by the Pacific Earthquake Engineering Research Center (PEER). Here, we discuss the following step undertaken to reduce the long list of pre-selected models down to a more manageable number for global hazard assessments. The procedure followed, consisting of an examination of the multi-dimensional (e.g. magnitude, distance and structural period) predicted ground-motion space in various ways and published quantitative tests of the GMPEs against observational data not used for their derivation, is discussed and illustrated for subduction zones.

Mots clés: attenuation relations; Global Earthquake Model; seismic hazard assessment; tectonic regionalization; ground motion prediction equations

Domaines: Planète et Univers [physics]; Sciences de la Terre; Géophysique [physics.geo-ph]; Physique [physics]; Physique [physics]; Géophysique [physics.geo-ph]; Sciences de l'environnement; Milieux et Changements globaux

Jonathan P. Stewart, John Douglas, Carola Di Alessandro, Yousef Bozorgnia, N.A. Abrahamson, et al.. Selection of a Global Set of GMPEs for the GEM-PEER Global GMPEs Project. 15th World Conference on Earthquake Engineering : 15th WCEE, Sep 2012, Lisbon, Portugal. in press, 9 p. ⟨hal-00700139⟩