Publications des scientifiques de l'IRD

Orefice A., Vallée Martin, Balestra J., Delouis B., Zollo A. (2013). Refined rupture-velocity estimation of the 2009 L'Aquila earthquake (M(w)6.3, Central Italy) derived from apparent source time functions. Bulletin of the Seismological Society of America, 103 (4), p. 2474-2481. ISSN 0037-1106.

Titre du document
Refined rupture-velocity estimation of the 2009 L'Aquila earthquake (M(w)6.3, Central Italy) derived from apparent source time functions
Année de publication
2013
Type de document
Article référencé dans le Web of Science WOS:000322569200023
Auteurs
Orefice A., Vallée Martin, Balestra J., Delouis B., Zollo A.
Source
Bulletin of the Seismological Society of America, 2013, 103 (4), p. 2474-2481 ISSN 0037-1106
In this paper, we obtain an accurate estimation of the rupture velocity of the 6 April 2009 M-w 6.3 L'Aquila earthquake (Central Apennines) by analyzing its apparent source time functions (ASTFs). These ASTFs have been extracted by deconvolving an empirical Green's function (EGF) at seismic stations located 200-800 km from the earthquake. From the study of duration, shape, and directivity of ASTFs at numerous and well-distributed stations, we show that the area between the two main slip patches of the earthquake ruptured at a relatively slow velocity (1: 6 km/s). We next validate simultaneously the ASTFs and the slip model independently obtained through the joint inversion of strong-motion, broadband teleseismic, Global Positioning System, and Interferometric Synthetic Aperture Radar data. The good agreement in shape and duration between the observed and theoretical ASTFs is an indication for the reliability of the inferred source model and for the robustness of the rupture velocity estimations of this study.
Plan de classement
Géophysique interne [066]
Description Géographique
ITALIE
Localisation
Fonds IRD [F B010060611]
Identifiant IRD
fdi:010060611
Contact