| Titre | X- and C-Band SAR surface displacement for the 2013 Lunigiana earthquake (Northern Italy): a breached relay ramp? |
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| Auteur | 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  Accès
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| Année | 2014 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20150208 |
| Éditeur | Institute of Electrical and Electronics Engineers (IEEE) |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1109/JSTARS.2014.2313640 |
| Media | papier; numérique; en ligne |
| Formats | pdf |
| Région | Lunigiana; Northern Italy |
| Lat/Long OENS | 9.0000 13.5000 44.5000 43.3833 |
| Sujets | déplacement; télédétection; secousses séismiques; études séismiques; mécanismes de tremblement de terre; formation de failles; failles; failles normales; analyses structurales; interpretations
structurelles; géophysique; géologie structurale |
| Illustrations | cartes de localisation; graphiques; images satellitaires; images géophysiques; tableaux; blocs-diagrammes |
| Résumé | (disponible en anglais seulement)
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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