Publication Date:
2020-02-24
Description:
An earthquake of Mw=6.3 struck L’Aquila town (central Italy) on April 6, 2009 rupturing an
approximately 18 km long SW-dipping normal fault. The aftershock area extended for a length of more than 35 km and included major aftershocks on April 7 and 9, and thousands of minor events.
Surface faulting occurred along the SW-dipping Paganica fault with a continuous extent of ~2.5 km.
Ruptures consist of open cracks and vertical dislocations or warps (0.1 maximum throw) with an orientation of N130°-N140°. Small triggered slip and shaking effects also took place along nearby synthetic and antithetic normal faults. The observed limited extent, and small surface displacement, of the Paganica ruptures with respect to the height of the fault scarps and vertical throws of paleoearthquakes along faults in the area, puts the faulting associated with the L’Aquila earthquake in perspective with respect to the maximum expected magnitude, and the regional seismic hazard.
Description:
In press
Description:
3.2. Tettonica attiva
Description:
JCR Journal
Description:
open
Keywords:
2009 L’Aquila seismic sequence
;
co-seismic surface effects
;
earthquake geology
;
normal faulting earthquake
;
Abruzzi, central Apennines
;
04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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