Publication Date:
2022-06-10
Description:
On 26 January 2014 at 13:55 UTC, an Mw 6.0 earthquake
struck the island of Cephalonia, Greece, followed five hours later
by an Mw 5.3 aftershock and by an Mw 5.9 event on 3 February
2014 at 03:08 UTC (National Observatory of Athens, Institute
of Geodynamics [NOA-GI]). The epicenter of theMw 6.0 event
was relocated 2 km east of the town of Lixouri, and that of the
Mw 5.9 event at the tip of the Gulf of Argostoli, in the northern
part of the Paliki peninsula (Fig. 1; Karastathis et al., 2014; Papadopoulos
et al., 2014). Extensive structural damage and widespread
environmental effects were induced throughout the Paliki
peninsula and along the eastern coast of the Gulf of Argostoli
(Valkaniotis et al., 2014). Quays, sidewalks, and piers were damaged
in the waterfront areas of the towns of Lixouri and Argostoli,
the island capital, and liquefactions, road failures, rock falls,
and small landslides were observed.Most of the latter effects took
place in the aftermath of the 26 January 2014 event and were
reactivated one week later by the 3 February earthquake.
In this paper, we derive the 3D surface deformation field
associated with the 3 February 2014Mw 5.9 event based on the
application of three different measurement techniques to Synthetic
Aperture Radar (SAR) acquisitions from the Italian
Space Agency (Agenzia Spaziale Italiana [ASI]) COSMO–
SkyMed satellites and the German Aerospace Center
(Deutsches Zentrum für Luft- und Raumfahrt, DLR) Tan-
DEM-X satellite. We then model the main seismic sources
and their associated slip distributions, comparing the latter
with improved hypocenter relocations, which allows us to
speculate on the possible rupture mechanism. Finally, we discuss
the contribution of our findings to the characterization of
the seismogenic sources of this region.
Description:
Published
Description:
124-137
Description:
2T. Tettonica attiva
Description:
JCR Journal
Description:
restricted
Keywords:
Crustal Deformation
;
Cephalonia Earthquake
;
InSAR
;
Multi Aperture Interferometry MAI
;
Tectonics
;
CFF analysis
;
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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