Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.6 on date 22-05-2012 and time 00:27:05 (UTC) in region 4 km W Finale Emilia (MO)

A magnitude ML 2.6 earthquake occured in region: 4 km W Finale Emilia (MO), on

  • 22-05-2012 00:27:05 (UTC)
  • 22-05-2012 02:27:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.8440, 11.2540 at 1 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV integrato con i dati della Rete Sismica di emergenza.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Finale Emilia MO 4 15699 15699
San Felice sul Panaro MO 9 10900 26599
Camposanto MO 11 3201 29800
Sant'Agostino FE 12 6853 36653
Cento FE 13 35686 72339
Bondeno FE 14 14655 86994
Medolla MO 14 6308 93302
Pieve di Cento BO 15 7019 100321
Mirandola MO 16 23875 124196
Crevalcore BO 16 13465 137661
Mirabello FE 16 3266 140927
Felonica MN 17 1359 142286
Cavezzo MO 18 7026 149312
Ravarino MO 18 6233 155545
Galliera BO 18 5439 160984
Castello d'Argile BO 18 6550 167534
Poggio Rusco MN 18 6625 174159
Calto RO 18 743 174902
Sermide MN 19 6189 181091
Ficarolo RO 19 2438 183529
Magnacavallo MN 19 1561 185090
San Giovanni del Dosso MN 19 1248 186338
San Prospero MO 19 5860 192198
Vigarano Mainarda FE 20 7694 199892
San Pietro in Casale BO 20 12202 212094
Castelmassa RO 20 4252 216346

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Ferrara (133155 inhabitants)
30 Km E of Carpi (70699 inhabitants)
34 Km NE of Modena (184973 inhabitants)
39 Km N of Bologna (386663 inhabitants)
49 Km SW of Rovigo (51867 inhabitants)
52 Km E of Reggio nell'Emilia (171345 inhabitants)
66 Km NW of Imola (69797 inhabitants)
69 Km SE of Verona (258765 inhabitants)
73 Km E of Parma (192836 inhabitants)
80 Km SW of Padova (210401 inhabitants)
80 Km NW of Faenza (58541 inhabitants)
82 Km SW of Vicenza (112953 inhabitants)
89 Km NW of Ravenna (159116 inhabitants)
93 Km NW of Forlì (117913 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.6 2012-05-22
00:27:05		 44.8442 11.2543 1 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV integrato con i dati della Rete Sismica di emergenza 5891911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-05-22 00:27:05 ± 0.04
Latitude 44.8442 ± 0.0009
Longitude 11.2543 ± 0.0025
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> REMO-INGV
Event type earthquake
Origin ID 5891911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 256
Semi-minor axis of confidence ellipse (meter) 173
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 14
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.403
Epicentral distance of station closest to the epicenter (degree) 0.05126
Epicentral distance of station farthest from the epicenter (degree) 0.81209
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:2.6

Field Value
Value 2.6
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 5891911
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:47:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ROVR.HHZ. 2012-05-22T00:27:22.23 1.0 undecidable manual P 351 90.1431 0.44 4.9
IV.RAVA.EHZ. 2012-05-22T00:27:14.28 0.1 undecidable manual S 228 14.4744 0.02 0.07
IV.T0820.EHZ. 2012-05-22T00:27:09.62 0.6 undecidable manual P 103 25.8519 -1.68 0.29
IV.RAVA.EHZ. 2012-05-22T00:27:09.75 0.1 negative manual P 228 14.4744 0.28 0.06
IV.T0817.EHZ. 2012-05-22T00:27:09.83 0.3 undecidable manual P 44 22.755 -1.03 0.13
IV.T0822.EHZ. 2012-05-22T00:27:09.65 0.1 undecidable manual S 100 7.2927 0.08 0.07
IV.T0813.EHZ. 2012-05-22T00:27:08.59 0.1 undecidable manual S 311 5.6943 -0.05 0.11
IV.T0811.EHZ. 2012-05-22T00:27:08.02 0.3 undecidable manual S 198 7.0929 -1.37 0.19
IV.T0822.EHZ. 2012-05-22T00:27:07.32 0.3 negative manual P 100 7.2927 0.22 0.14
IV.T0813.EHZ. 2012-05-22T00:27:06.69 0.3 positive manual P 311 5.6943 0.03 0.14
IV.T0811.EHZ. 2012-05-22T00:27:06.94 0.3 negative manual P 198 7.0929 0 0.14
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAVA.EHE. ML:2.0 0.00135 0.24 AML other m 2012-05-22T00:27:15.09
IV.RAVA.EHN. ML:2.1 0.0014199999999999998 0.24 AML other m 2012-05-22T00:28:03.65
IV.T0820.HNE. ML:2.7 0.00315 0.4 AML other m 2012-05-22T00:28:00.61
IV.T0820.HNN. ML:2.5 0.00206 0.26 AML other m 2012-05-22T00:27:53.01
IV.T0820.HHE. ML:2.7 0.0033450000000000003 0.64 AML other m 2012-05-22T00:28:00.09
IV.T0820.HHN. ML:2.6 0.0027949999999999997 0.46 AML other m 2012-05-22T00:28:00.61
IV.FIU.EHE. ML:2.6 0.002255 0.16 AML other m 2012-05-22T00:27:54.50
IV.FIU.EHN. ML:2.7 0.0025949999999999997 0.28 AML other m 2012-05-22T00:27:54.48
IV.TEOL.HHE. ML:2.7 0.0008380000000000001 0.34 AML other m 2012-05-22T00:28:11.54
IV.TEOL.HHN. ML:2.6 0.0006615 0.56 AML other m 2012-05-22T00:28:10.92
IV.ROVR.HHE. ML:2.3 0.0002475 1.06 AML other m 2012-05-22T00:28:18.20
IV.ROVR.HHN. ML:2.7 0.0005625 0.42 AML other m 2012-05-22T00:28:17.43
IV.MAGA.HHE. ML:2.8 0.00047250000000000005 0.42 AML other m 2012-05-22T00:28:28.31
IV.MAGA.HHN. ML:2.6 0.000311 0.48 AML other m 2012-05-22T00:28:25.89
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download