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The Emilia 2012 sequence: a macroseismic survey
Author(s)
Language
English
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
4/55 (2012)
Publisher
istituto nazionale di geofisica e vulcanologia
Pages (printed)
679-687
Issued date
August 2012
Alternative Location
Keywords
Abstract
On May 20, 2012, at 4:03 local time (2:03 UTC), a large part of the Po Valley between the cities of Ferrara, Modena and Mantova was struck by a damaging earthquake (Ml 5.9). The epicenter was located by the Istituto Nazionale di Geo-fisica e Vulcanologia (INGV) seismic network [ISIDe 2010] at 44.889 ˚N and 11.228 ˚E, approximately 30 km west of Ferrara (Figure 1). The event was preceded by a foreshock that occurred at 01:13 local time, with a magnitude of Ml 4. The mainshock started an intense seismic sequence that lasted for weeks, counting more than 2,000 events, six of which had Ml >5. The strongest earthquakes of this sequence occurred on May 29, 2012, with Ml 5.8 and Ml 5.3, recorded at 9:00 and 12:55 local time, respectively. The epicenters of the May 29, 2012, events were located at the westernmost part of the rupture zone of the May 20, 2012, earthquake (Figure 2). The May 20 and 29, 2012, earthquakes were felt through the whole of northern and central Italy, and as far as Switzerland, Slovenia, Croatia, Austria, south-eastern France and southern Germany. Historical information reveals that the seismic activity in the Po Valley is moderate […]
References
Castelli, V., F. Bernardini, R. Camassi, C.H. Caracciolo, E. Ercolani
and L. Postpischl (2012). Looking for missing
earthquake traces in the Ferrara-Modena plain: an update
on historical seismicity, Annals of Geophysics, 55 (4);
doi:10.4401/ag-6110.
TERTULLIANI ET AL.
686
Event Instrumental parameters Macroseismic parameters
Coordinates
(°N; °E)
ML Coordinates
(°N; °E)
MEW
May 20, 2012 44.889; 11.228 5.9 44.828; 11.241 5.1
May 29, 2012 44.851; 11.086 5.8 - -
Cumulated - - 44.866; 11.017 5.3
Table 2. Instrumental parameters [ISIDe 2010] of the May 20 and 29, 2012, earthquakes, and the macroseismic parameters based on the May 20, 2012,
intensities and the cumulative intensities computed by Boxer 4.0 [Gasperini et al. 2010].
687
Gasperini, P., and Ferrari G. (2000). Deriving numerical estimates
from descriptive information: the estimation of
earthquake synthetic parameters, Annali di Geofisica, 43
(4), 729-746; doi:10.4401/ag-3670.
Gasperini, P., G. Vannucci, D. Tripone and E. Boschi (2010).
The location and sizing of historical earthquakes using
the attenuation of macroseismic intensity with distance,
B. Seismol. Soc. Am., 100, 2035-2066; doi: 10.1785/01200
90330.
Grünthal, G., ed. (1998). European Macroseismic Scale 1998
(EMS-98). European Seismological Commission, Subcommission
on Engineering Seismology, Working Group
Macroseismic Scales. Conseil de l'Europe, Cahiers du
Centre Européen de Géodynamique et de Séismologie,
15, Luxembourg, 99 pp.
ISIDe Working Group (INGV) (2010). Italian seismological
instrumental and parametric database: http://iside.rm.
ingv.it, last accessed, July 2012.
Locati, M., R. Camassi and M. Stucchi, eds. (2011). DBMI11,
the 2011 version of the Italian macroseismic database, Milano,
Bologna; http://emidius.mi.ingv.it/DBMI11 (last
accessed, July 2012).
MCS (1930). Scala macrosismica Mercalli-Cancani-Sieberg,
In: A. Sieberg (ed.), Geologie der Erdbeben, Handbuch
der Geophysic, Tables 2 and 3, Berlin.
Pasolini, C., D. Albarello, P. Gasperini, V. D'Amico and R.
Lolli (2008). The attenuation of seismic intensity in Italy,
part II: modeling and validation, B. Seismol. Soc. Am., 98,
692-708; doi:10.1785/0120070021.
QUEST-INGV (2012). Sintesi degli effetti del terremoto del
20 maggio 2012 (ML=5.9) sulle località rilevate dalle
squadre di QUEST INGV, Open file report; http://quest.
ingv.it/images/pdf/quest_report_28maggio_protect.pdf
(last accessed September 2012).
Rovida, A., R. Camassi, P. Gasperini and M. Stucchi, eds.
(2011). CPTI11, the 2011 version of the parametric catalogue
of Italian earthquakes, Milano/Bologna; http://
emidius.mi.ingv.it/CPTI (last accessed, July 2012).
and L. Postpischl (2012). Looking for missing
earthquake traces in the Ferrara-Modena plain: an update
on historical seismicity, Annals of Geophysics, 55 (4);
doi:10.4401/ag-6110.
TERTULLIANI ET AL.
686
Event Instrumental parameters Macroseismic parameters
Coordinates
(°N; °E)
ML Coordinates
(°N; °E)
MEW
May 20, 2012 44.889; 11.228 5.9 44.828; 11.241 5.1
May 29, 2012 44.851; 11.086 5.8 - -
Cumulated - - 44.866; 11.017 5.3
Table 2. Instrumental parameters [ISIDe 2010] of the May 20 and 29, 2012, earthquakes, and the macroseismic parameters based on the May 20, 2012,
intensities and the cumulative intensities computed by Boxer 4.0 [Gasperini et al. 2010].
687
Gasperini, P., and Ferrari G. (2000). Deriving numerical estimates
from descriptive information: the estimation of
earthquake synthetic parameters, Annali di Geofisica, 43
(4), 729-746; doi:10.4401/ag-3670.
Gasperini, P., G. Vannucci, D. Tripone and E. Boschi (2010).
The location and sizing of historical earthquakes using
the attenuation of macroseismic intensity with distance,
B. Seismol. Soc. Am., 100, 2035-2066; doi: 10.1785/01200
90330.
Grünthal, G., ed. (1998). European Macroseismic Scale 1998
(EMS-98). European Seismological Commission, Subcommission
on Engineering Seismology, Working Group
Macroseismic Scales. Conseil de l'Europe, Cahiers du
Centre Européen de Géodynamique et de Séismologie,
15, Luxembourg, 99 pp.
ISIDe Working Group (INGV) (2010). Italian seismological
instrumental and parametric database: http://iside.rm.
ingv.it, last accessed, July 2012.
Locati, M., R. Camassi and M. Stucchi, eds. (2011). DBMI11,
the 2011 version of the Italian macroseismic database, Milano,
Bologna; http://emidius.mi.ingv.it/DBMI11 (last
accessed, July 2012).
MCS (1930). Scala macrosismica Mercalli-Cancani-Sieberg,
In: A. Sieberg (ed.), Geologie der Erdbeben, Handbuch
der Geophysic, Tables 2 and 3, Berlin.
Pasolini, C., D. Albarello, P. Gasperini, V. D'Amico and R.
Lolli (2008). The attenuation of seismic intensity in Italy,
part II: modeling and validation, B. Seismol. Soc. Am., 98,
692-708; doi:10.1785/0120070021.
QUEST-INGV (2012). Sintesi degli effetti del terremoto del
20 maggio 2012 (ML=5.9) sulle località rilevate dalle
squadre di QUEST INGV, Open file report; http://quest.
ingv.it/images/pdf/quest_report_28maggio_protect.pdf
(last accessed September 2012).
Rovida, A., R. Camassi, P. Gasperini and M. Stucchi, eds.
(2011). CPTI11, the 2011 version of the parametric catalogue
of Italian earthquakes, Milano/Bologna; http://
emidius.mi.ingv.it/CPTI (last accessed, July 2012).
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