| Title | X- and C-Band SAR surface displacement for the 2013 Lunigiana earthquake (Northern Italy): a breached relay ramp? |
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| Author | Stramondo, S; Vannoli, P; Cannelli, V; Polcari, M; Melini, D; Samsonov, S ; Moro, M; Bignami, C; Saroli, M |
| Source | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing vol. 7, issue 7, 2014 p. 2746-2753, https://doi.org/10.1109/JSTARS.2014.2313640  Open
Access |
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| Year | 2014 |
| Alt Series | Earth Sciences Sector, Contribution Series 20150208 |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Document | serial |
| Lang. | English |
| Media | paper; digital; on-line |
| File format | pdf |
| Area | Lunigiana; Northern Italy; Italy |
| Lat/Long WENS | 9.0000 13.5000 44.5000 43.3833 |
| Subjects | geophysics; structural geology; displacement; remote sensing; earthquakes; earthquake studies; earthquake mechanisms; faulting; faults; faults, normal; structural analyses; structural interpretations;
RADARSAT-2; COSMO-SkyMed; Lunigiana Basin; Garfagnana Basin; Okada analytical formulation |
| Illustrations | location maps; plots; satellite images; geophysical images; tables; block diagrams |
| Released | 2014 07 01 |
| Abstract | In this paper, we applied the differential interferometric synthetic aperture radar (DInSAR) technique to investigate and measure surface displacements due to the 5.3 ( 5.2), June 21, 2013 earthquake,
occurred north of the Apuan Alps (NW Italy), in the discontinuity zone between the Lunigiana and Garfagnana area. Two differential interferograms showing the coseismic displacement have been generated using X-band and C-band data, taken from
COSMO-SkyMed and RADARSAT-2 satellites, respectively. Both interferograms highlighted a clear pattern of subsidence of 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 toward NW at about 50 . The integrated analysis of DInSAR, geological data, modeling, and historical seismicity suggest that the fault responsible for the
June 2013 earthquake corresponds to a breached relay ramp connecting the Lunigiana and Garfagnana seismogenic sources. |
| GEOSCAN ID | 296914 |
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