| Titre | New insights into the 2012 Emilia (Italy) seismic sequence through advanced numerical modeling of ground deformation InSAR measurements |
| |
| Auteur | Tizzani, P; Castaldo, R; Solaro, G; Pepe, S; Bonano, M; Casu, F; Manunta, M; Manzo, M; Pepe, A; Samsonov, S ; Lanari, R; Sansosti, E |
| Source | Journal of Geophysical Research vol. 40, issue 10, 2013 p. 1971-1977, https://doi.org/10.1002/grl.50290  Accès ouvert |
| Image |  |
| Année | 2013 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20130483 |
| Éditeur | Wiley-Blackwell |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1002/grl.50290 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Région | Modena; Finale Emilia |
| Lat/Long OENS | 10.5000 11.7500 45.0333 44.5000 |
| Sujets | établissement de modèles; télédétection; déformation; secousses séismiques; failles; méthodes analytiques; géophysique |
| Diffusé | 2013 05 26 |
| Résumé | (disponible en anglais seulement)
We provide new insights into the two main seismic events that occurred in 2012 in the Emilia region, Italy. We extend the results from previous studies based on
analytical inversion modeling of GPS and RADARSAT-1 InSAR measurements by exploiting RADARSAT-2 data. Moreover, we benefit from the available large amount of geological and geophysical information through finite element method (FEM) modeling
implemented in a structural-mechanical context to investigate the impact of known buried structures on the modulation of the ground deformation field. We find that the displacement pattern associated with the 20 May event is consistent with the
activation of a single fault segment of the inner Ferrara thrust, in good agreement with the analytical solution. In contrast, the interpretation of the 29 May episode requires the activation of three different fault segments and a block
roto-translation of the Mirandola anticline. The proposed FEM-based methodology is applicable to other seismic areas where the complexity of buried structures is known and plays a fundamental role in the modulation of the associated surface
deformation pattern. |
| GEOSCAN ID | 293734 |
|
|