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TitleA possible breached relay ramp causing the 2013 Lunigiana earthquake (Northern Italy)
AuthorPolcari, M; Stramondo, S; Vannoli, P; Cannelli, V; Melini, D; Samsonov, SORCID logo; Moro, M; Bignami, C; Saroli, M
SourceIEEE International Geoscience and Remote Sensing Symposium proceedings 2014, 2014 p. 2397-2399,
Alt SeriesEarth Sciences Sector, Contribution Series 20150209
Mediapaper; digital; on-line
File formatpdf
AreaLunigiana; Italy
Lat/Long WENS 9.2500 13.5000 44.5000 43.3833
Subjectsgeophysics; earthquakes; earthquake studies; earthquake mechanisms; remote sensing; structural interpretations; structural analyses; faults; faulting; faults, normal; DInSAR
Illustrationssatellite images; geophysical images; tables
Released2014 07 01
AbstractWe applied the Differential Interferometric Synthetic Aperture Radar (DInSAR) technique to investigate and model the Mw 5.3 (Ml 5.2), June 21st, 2013 earthquake, occurred in the discontinuity zone between the Lunigiana and Garfagnana areas, NW Italy. We analyzed the coseismic displacement from two differential interferogram generated using COSMO-SkyMed X-band and RADARSAT-2 C-band data. Both interferograms show a pattern of subsidence of a few cm located between the Lunigiana and Garfagnana basins. We then modeled the observed SAR deformation fields using the Okada analytical formulation and found them to be consistent with an extensional fault plane dipping towards NW at about 50°. Our results suggest that the fault responsible for the June 2013 earthquake may correspond to a breached relay ramp connecting the Lunigiana and Garfagnana seismogenic sources

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