Finite fault inversion of DInSAR coseismic displacement of the 2009 L'Aquila earthquake (central Italy)

被引：296

作者：

Atzori, Simone ^{[1
]}

Hunstad, Ingrid ^{[1
]}

Chini, Marco ^{[1
]}

Salvi, Stefano ^{[1
]}

Tolomei, Cristiano ^{[1
]}

Bignami, Christian ^{[1
]}

Stramondo, Salvatore ^{[1
]}

Trasatti, Elisa ^{[1
]}

Antonioli, Andrea ^{[1
]}

Boschi, Enzo ^{[1
]}

机构：

[1] Ist Nazl Geofis & Vulcanol, I-00143 Rome, Italy

来源：

GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷

关键词：

D O I：

10.1029/2009GL039293

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We define the geometric and kinematic characteristics of the fault activated during the M-w = 6.3, 6 April 2009 L'Aquila earthquake, from the modeling of Envisat and COSMO-SkyMed (the first ever X-band interferogram inverted for a coseismic dislocation study) DInSAR interferograms. Our best-fit solution for the main shock is represented by a normal fault similar to 16 km long and similar to 12 km wide, with a small right-lateral component, dipping 47 degrees SW with a maximum slip of similar to 90 cm. Although the seismic dislocation probably ended at 1 km depth, the updip projection of the fault plane corresponds to the northern segment of the mapped Paganica - S. Demetrio fault, where alignment of surface breaks was observed in the field. The absence of this fault in existing seismic source catalogues suggests that an improved approach, involving detailed surface and subsurface geological and geophysical investigations, is needed for a better assessment of the seismic hazard at the local scale. Citation: Atzori, S., I. Hunstad, M. Chini, S. Salvi, C. Tolomei, C. Bignami, S. Stramondo, E. Trasatti, A. Antonioli, and E. Boschi (2009), Finite fault inversion of DInSAR coseismic displacement of the 2009 L'Aquila earthquake (central Italy), Geophys. Res. Lett., 36, L15305, doi:10.1029/2009GL039293.

引用

页数：6

共 18 条

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