Coseismic ground deformation of the 6 April 2009 L'Aquila earthquake (central Italy, Mw6.3)

被引：140

作者：

Boncio, P. ^{[1
]}

Pizzi, A. ^{[1
]}

Brozzetti, F. ^{[1
]}

Pomposo, G. ^{[1
]}

Lavecchia, G. ^{[1
]}

Di Naccio, D. ^{[1
]}

Ferrarini, F. ^{[1
]}

机构：

[1] Univ G DAnnunzio, Dipartimento Sci Terra, I-66013 Chieti, Italy

来源：

GEOPHYSICAL RESEARCH LETTERS | 2010年 / 37卷

关键词：

D O I：

10.1029/2010GL042807

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We provide field data of coseismic ground deformation related to the 6 April Mw 6.3 L'Aquila normal faulting earthquake. Three narrow fracture zones were mapped: Paganica-Colle Enzano (P-E), Mt. Castellano-Mt. Stabiata (C-S) and San Gregorio (SG). These zones define 13 km of surface ruptures that strike at 130-140 degrees. We mapped four main types of ground deformation (free faces on bedrock fault scarps, faulting along synthetic splays and fissures with or without slip) that are probably due to the near-surface lithology of the fault walls and the amount of slip that approached the surface coseismically. The P-E and C-S zones are characterized by downthrow to the SW (up to 10 cm) and opening (up to 12 cm), while the SG zone is characterized only by opening. Afterslip throw rates of 0.5-0.6 mm/day were measured along the Paganica fault, where paleoseismic evidence reveals recurring paleo-earthquakes and post-24.8 kyr slip-rate >= 0.24 mm/yr. Citation: Boncio, P., A. Pizzi, F. Brozzetti, G. Pomposo, G. Lavecchia, D. Di Naccio, and F. Ferrarini (2010), Coseismic ground deformation of the 6 April 2009 L'Aquila earthquake (central Italy, M(w)6.3), Geophys. Res. Lett., 37, L06308, doi: 10.1029/2010GL042807.

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