Publication Date:
2017-04-04
Description:
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°. 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.
Description:
Published
Description:
L06308
Description:
2T. Tettonica attiva
Description:
JCR Journal
Description:
restricted
Keywords:
6 April 2009 L’Aquila earthquake
;
Coseismic ground deformation
;
04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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