eprintid: 1805 rev_number: 19 eprint_status: archive userid: 6 dir: disk0/00/00/18/05 datestamp: 2017-01-03 12:24:37 lastmod: 2017-02-08 12:21:33 status_changed: 2017-01-03 12:24:37 type: article metadata_visibility: show creators_name: Di Manna, Pio creators_name: Guerrieri, Luca creators_name: Piccardi, Luigi creators_name: Vittori, Eutizio creators_name: Castaldini, Doriano creators_name: Berlusconi, Andrea creators_name: Bonadeo, Livio creators_name: Comerci, Valerio creators_name: Ferrario, Francesca creators_name: Gambillara, Roberto creators_name: Livio, Franz creators_name: Lucarini, Mauro creators_name: Michetti, Alessandro Maria corp_creators: ISPRA, Servizio Geologico d'Italia, Roma, Italy corp_creators: ISPRA, Servizio Geologico d'Italia, Roma, Italy corp_creators: Istituto di Geoscienze e Georisorse, CNR, Firenze, Italy corp_creators: ISPRA, Servizio Geologico d'Italia, Roma, Italy corp_creators: Università di Modena e Reggio Emilia, Dipartimento di Scienze Chimiche e Geologiche, Modena, Italy corp_creators: Università dell'Insubria, Dipartimento di Scienza e Alta Tecnologia, Como, Italy corp_creators: Università dell'Insubria, Dipartimento di Scienza e Alta Tecnologia, Como, Italy corp_creators: ISPRA, Servizio Geologico d'Italia, Roma, Italy corp_creators: Università dell'Insubria, Dipartimento di Scienza e Alta Tecnologia, Como, Italy corp_creators: Università dell'Insubria, Dipartimento di Scienza e Alta Tecnologia, Como, Italy corp_creators: Università dell'Insubria, Dipartimento di Scienza e Alta Tecnologia, Como, Italy corp_creators: ISPRA, Servizio Geologico d'Italia, Roma, Italy corp_creators: Università dell'Insubria, Dipartimento di Scienza e Alta Tecnologia, Como, Italy title: Ground effects induced by the 2012 seismic sequence in Emilia: implications for seismic hazard assessment in the Po Plain. subjects: MP3_2 subjects: RIt1 subjects: SHC divisions: IP8 full_text_status: none keywords: ESI 2007scale; Coseismic effects; Macroseismic intensity; Seismic hazard; Liquefaction-type phenomena abstract: Since May 16, 2012, a seismic sequence has affected a wide portion of the Emilia Region (northern Italy), chiefly for the Modena and Ferrara Provinces. The first mainshock (Ml 5.9; focal depth, ca. 6 km) occurred on May 20, 2012, with the epicenter located a few kilometers north of Finale Emilia. A second main shock (Ml 5.8; focal depth, ca. 10 km) occurred on May 29, 2012, about 12 km west of the first earthquake, with the epicenter near Medolla (Figure 1). The seismic sequence has been characterized by five other Ml ≥5 events, and more than 2,300 aftershocks of lower magnitude, until the end July 2012. The distribution of the aftershocks identifies a WNW-ESE-trending zone ca. 40 km long that is characterized by NNE-SSW nearly pure compression, as indicated by the focal mechanisms [e.g., QRCMT 2012]. This report focuses on the many ground effects that were induced by this seismic sequence, as mainly cracks, liquefaction-type phenomena, and hydrological anomalies. The aim is to provide a complete representation of such effects, to: illustrate their type, size and areal distribution; identify the zones in the affected area that were most prone to the occurrence of ground effects (i.e., more susceptible to local geological instability in the case of earthquake occurrence); carry out an independent assessment of the intensities of the earthquakes through the ESI 2007 intensity scale [Guerrieri and Vittori 2007], which is based only on coseismic effects on the natural environment. […] date: 2012 date_type: published publication: Annals of Geophysics volume: 55 number: 4 publisher: Istituto Nazionale di Geofisica e Vulcanologia (INGV) id_number: DOI: 10.4401/ag-6143 issn: 1593-5213 official_url: http://doi.org/10.4401/ag-6143 access_IS-EPOS: limited owner: Publisher citation: Di Manna, Pio and Guerrieri, Luca and Piccardi, Luigi and Vittori, Eutizio and Castaldini, Doriano and Berlusconi, Andrea and Bonadeo, Livio and Comerci, Valerio and Ferrario, Francesca and Gambillara, Roberto and Livio, Franz and Lucarini, Mauro and Michetti, Alessandro Maria (2012) Ground effects induced by the 2012 seismic sequence in Emilia: implications for seismic hazard assessment in the Po Plain. Annals of Geophysics, 55 (4). DOI: https://doi.org/10.4401/ag-6143