The 2009 L'Aquila earthquake (central Italy): A source mechanism and implications for seismic hazard

被引：172

作者：

Walters, R. J. ^{[1
]}

Elliott, J. R. ^{[1
]}

D'Agostino, N. ^{[2
]}

England, P. C. ^{[1
]}

Hunstad, I. ^{[2
]}

Jackson, J. A. ^{[3
]}

Parsons, B. ^{[1
]}

Phillips, R. J. ^{[4
]}

Roberts, G. ^{[5
]}

机构：

[1] Univ Oxford, Dept Earth Sci, COMET, Oxford OX1 3PR, England

[2] Ist Nazl Geofis & Vulcan, Ctr Nazl Terremoti, I-00143 Rome, Italy

[3] Univ Cambridge, Dept Earth Sci, COMET, Cambridge CB3 0EZ, England

[4] Univ Edinburgh, Sch Geosci, Edinburgh EH8 9XP, Midlothian, Scotland

[5] UCL, Res Sch Earth Sci, London WC1E 6BT, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷

关键词：

NORMAL-FAULT SYSTEMS; CENTRAL APENNINES; ABRUZZO; EXAMPLE; MODEL;

D O I：

10.1029/2009GL039337

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We use InSAR and body-wave seismology to determine independent source parameters for the 6th April 2009 M-w 6.3 L'Aquila earthquake and confirm that the earthquake ruptured a SW-dipping normal fault with similar to 0.6-0.8 m slip. The causative Paganica fault had been neglected relative to other nearby range-frontal faults, partly because it has a subdued geomorphological expression in comparison with these faults. The L'Aquila earthquake occurred in an area with a marked seismic deficit relative to geodetically determined strain accumulation. We use our source model to calculate stress changes on nearby faults produced by the L'Aquila earthquake and we find that several of these faults have been brought closer to failure. Citation: Walters, R. J., J. R. Elliott, N. D'Agostino, P. C. England, I. Hunstad, J. A. Jackson, B. Parsons, R. J. Phillips, and G. Roberts (2009), The 2009 L'Aquila earthquake (central Italy): A source mechanism and implications for seismic hazard, Geophys. Res. Lett., 36, L17312, doi:10.1029/2009GL039337.

引用

页数：6

共 17 条

[1]

Bagnaia R., 1992, QUATERNARIA NOVA, V2, P187

[2] Defining a model of 3D seismogenic sources for Seismic Hazard Assessment applications: The case of central Apennines (Italy) [J].

Boncio, P ;

Lavecchia, G ;

Pace, B .

JOURNAL OF SEISMOLOGY, 2004, 8 (03) :407-425

[3] Active tectonics of the Adriatic region from GPS and earthquake slip vectors [J].

D'Agostino, N. ;

Avallone, A. ;

Cheloni, D. ;

D'Anastasio, E. ;

Mantenuto, S. ;

Selvaggi, G. .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2008, 113 (B12)

[4] Interactions between mantle upwelling, drainage evolution and active normal faulting: an example from the central Apennines (Italy) [J].

D'Agostino, N ;

Jackson, JA ;

Dramis, F ;

Funiciello, R .

GEOPHYSICAL JOURNAL INTERNATIONAL, 2001, 147 (02) :475-497

[5] The shuttle radar topography mission [J].

Farr, Tom G. ;

Rosen, Paul A. ;

Caro, Edward ;

Crippen, Robert ;

Duren, Riley ;

Hensley, Scott ;

Kobrick, Michael ;

Paller, Mimi ;

Rodriguez, Ernesto ;

Roth, Ladislav ;

Seal, David ;

Shaffer, Scott ;

Shimada, Joanne ;

Umland, Jeffrey ;

Werner, Marian ;

Oskin, Michael ;

Burbank, Douglas ;

Alsdorf, Douglas .

REVIEWS OF GEOPHYSICS, 2007, 45 (02)

[6] New paleoseismological data from the Gran Sasso d'Italia area (central Apennines) [J].

Galli, P ;

Galadini, F ;

Moro, M ;

Giraudi, C .

GEOPHYSICAL RESEARCH LETTERS, 2002, 29 (07) :38-1

[7] PALEOSEISMICITY IN THE GRAN-SASSO MASSIF (ABRUZZO, CENTRAL ITALY) [J].

GIRAUDI, C ;

FREZZOTTI, M .

QUATERNARY INTERNATIONAL, 1995, 25 :81-93

[8] Migration of activity within normal fault systems: examples from the Quaternary of mainland Greece [J].

Goldsworthy, M ;

Jackson, J .

JOURNAL OF STRUCTURAL GEOLOGY, 2001, 23 (2-3) :489-506

[9] Geodetic strain in peninsular Italy between 1875 and 2001 [J].

Hunstad, I ;

Selvaggi, G ;

D'Agostino, N ;

England, P ;

Clarke, P ;

Pierozzi, M .

GEOPHYSICAL RESEARCH LETTERS, 2003, 30 (04) :30-1

[10] Fault slip distribution of the 1999 Mw 7.1 Hector Mine, California, earthquake, estimated from satellite radar and GPS measurements [J].

Jónsson, S ;

Zebker, H ;

Segall, P ;

Amelung, F .

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2002, 92 (04) :1377-1389

← 1 2 →