Earthquake with magnitude of ML 3.1 on date 23-06-2012 and time 22:18:51 (Italy) in region 4 km NW Finale Emilia (MO)

A magnitude ML 3.1 earthquake occured in region: 4 km NW Finale Emilia (MO), on

  • 23-06-2012 20:18:51 (UTC)
  • 23-06-2012 22:18:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.8630, 11.2720 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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 11 10900 26599
Bondeno FE 12 14655 41254
Sant'Agostino FE 12 6853 48107
Camposanto MO 13 3201 51308
Felonica MN 15 1359 52667
Cento FE 15 35686 88353
Mirabello FE 15 3266 91619
Medolla MO 16 6308 97927
Calto RO 16 743 98670
Sermide MN 16 6189 104859
Ficarolo RO 16 2438 107297
Mirandola MO 16 23875 131172
Pieve di Cento BO 17 7019 138191
Magnacavallo MN 17 1561 139752
Castelmassa RO 18 4252 144004
Poggio Rusco MN 18 6625 150629
Vigarano Mainarda FE 18 7694 158323
Crevalcore BO 18 13465 171788
Salara RO 18 1160 172948
Castelnovo Bariano RO 18 2762 175710
Galliera BO 18 5439 181149
Ceneselli RO 19 1719 182868
San Giovanni del Dosso MN 19 1248 184116
Gaiba RO 19 1063 185179
Cavezzo MO 19 7026 192205
Villa Poma MN 20 2023 194228
Carbonara di Po MN 20 1297 195525

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Ferrara (133155 inhabitants)
32 Km E of Carpi (70699 inhabitants)
36 Km NE of Modena (184973 inhabitants)
41 Km N of Bologna (386663 inhabitants)
47 Km W of Rovigo (51867 inhabitants)
54 Km E of Reggio nell'Emilia (171345 inhabitants)
67 Km NW of Imola (69797 inhabitants)
68 Km SE of Verona (258765 inhabitants)
75 Km E of Parma (192836 inhabitants)
77 Km SW of Padova (210401 inhabitants)
79 Km S of Vicenza (112953 inhabitants)
80 Km NW of Faenza (58541 inhabitants)
89 Km NW of Ravenna (159116 inhabitants)
94 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 3.1 2012-06-23
20:18:53
44.895 11.2695 6 2014-10-21
12:08:56
Sala Sismica INGV-Roma 1706351
Bulletin
Rev1000
ML 3.1 2012-06-23
20:18:51
44.8628 11.2725 9 2014-09-19
08:14:18
Bollettino Sismico Italiano INGV 6406241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-06-23 20:18:51 ± 0.11
Latitude 44.8628 ± 0.0063
Longitude 11.2725 ± 0.0063
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 6406241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 697
Semi-minor axis of confidence ellipse (meter) 520
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 355
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.02248
Epicentral distance of station farthest from the epicenter (degree) 1.08728
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 162
Type of magnitude ML
Reference to an origin 1706351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-06-23 20:28:38

ML:3.1

Field Value
Value 3.1
Uncertainty 0.1
Num. used stations 35
Type of magnitude ML
Reference to an origin 6406241
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:48:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRMI.HHZ. 2012-06-23T20:19:15.14 0.6 undecidable manual P 191 120.6903 38 0.54 36
IV.MAGA.HHZ. 2012-06-23T20:19:13.50 0.6 undecidable manual P 334 112.998 38 0.09 41
IV.CMPO.HHZ. 2012-06-23T20:19:12.72 0.6 undecidable manual S 126 52.4031 38 -0.33 44
MN.VLC.HHZ. 2012-06-23T20:19:12.05 0.3 undecidable manual P 222 104.9172 38 -0.11 62
IV.BDI.HHZ. 2012-06-23T20:19:12.17 0.6 undecidable manual P 211 103.6185 38 0.21 41
IV.SALO.HHZ. 2012-06-23T20:19:11.61 0.6 undecidable manual P 325 102.12 38 -0.12 41
IV.PTF.SHZ. 2012-06-23T20:19:11.97 0.3 undecidable manual P 189 101.4207 38 0.36 59
GU.POPM.HHZ. 2012-06-23T20:19:10.89 0.6 undecidable manual P 204 99.5226 38 -0.42 39
IV.ERBM.EHZ. 2012-06-23T20:19:09.48 0.1 undecidable manual P 234 83.8494 38 0.6 76
IV.ROVR.HHZ. 2012-06-23T20:19:09.10 0.3 undecidable manual P 350 88.3449 38 -0.49 59
IV.BRIS.HHZ. 2012-06-23T20:19:09.96 0.6 undecidable manual P 151 80.8635 38 1.54 24
IV.IMOL.EHZ. 2012-06-23T20:19:08.17 0.6 undecidable manual P 146 67.0773 38 1.9 19
IV.ZCCA.HHZ. 2012-06-23T20:19:05.79 0.1 undecidable manual P 202 61.3941 38 0.39 85
IV.TEOL.HHZ. 2012-06-23T20:19:05.22 0.1 undecidable manual P 29 63.5919 38 -0.53 81
IV.T0819.EHZ. 2012-06-23T20:19:04.54 0.6 undecidable manual S 275 29.5482 50 -1.32 30
IV.CMPO.HHZ. 2012-06-23T20:19:04.49 0.6 undecidable manual P 126 52.4031 38 0.49 42
IV.FIU.EHZ. 2012-06-23T20:19:04.53 0.6 undecidable manual S 145 30.1476 50 -1.6 26
IV.T0821.HNZ. 2012-06-23T20:19:01.93 0.6 undecidable manual S 78 21.5673 50 -0.44 45
IV.RAVA.EHZ. 2012-06-23T20:19:01.09 0.1 undecidable manual S 226 16.9719 50 0.74 81
IV.T0825.EHZ. 2012-06-23T20:19:01.16 0.3 undecidable manual P 290 35.6421 50 -0.26 68
IV.MODE.HNZ. 2012-06-23T20:19:00.84 0.3 undecidable manual P 225 36.3414 50 -0.75 59
IV.T0805.HNZ. 2012-06-23T20:18:59.60 0.6 undecidable manual S 32 7.3815 141 0.79 41
IV.FIU.EHZ. 2012-06-23T20:18:59.16 0.1 undecidable manual P 145 30.1476 50 -0.89 75
IV.T0820.HNZ. 2012-06-23T20:18:58.66 0.3 undecidable manual P 108 24.9528 50 -0.1 72
IV.T0822.EHZ. 2012-06-23T20:18:58.46 0.1 undecidable manual S 120 6.6933 144 -0.11 99
IV.T0802.HNZ. 2012-06-23T20:18:58.32 0.3 undecidable manual S 281 7.2927 142 -0.47 69
IV.T0819.EHZ. 2012-06-23T20:18:58.89 0.6 undecidable manual P 275 29.5482 50 -1 35
IV.T0800.HHZ. 2012-06-23T20:18:57.41 0.1 undecidable manual S 231 2.4975 165 -0.1 100
IV.SERM.EHZ. 2012-06-23T20:18:57.59 0.3 undecidable manual P 6 16.3725 50 0.98 55
IV.T0821.HNZ. 2012-06-23T20:18:57.90 0.3 undecidable manual P 78 21.5673 50 0 74
IV.RAVA.EHZ. 2012-06-23T20:18:57.17 0.1 undecidable manual P 226 16.9719 50 0.43 91
IV.T0805.HNZ. 2012-06-23T20:18:56.13 0.1 undecidable manual P 32 7.3815 141 0.27 96
IV.T0800.HHZ. 2012-06-23T20:18:55.21 0.1 undecidable manual P 231 2.4975 165 0.09 100
IV.T0822.EHZ. 2012-06-23T20:18:55.80 0.1 undecidable manual P 120 6.6933 144 0.07 100
IV.T0802.HNZ. 2012-06-23T20:18:55.79 0.1 undecidable manual P 281 7.2927 142 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
NI.AGOR.HHE. ML:3.3 0.000859 0.38 AML other m 2012-06-23T20:19:46.25
NI.AGOR.HHN. ML:3.2 0.0007055 1.58 AML other m 2012-06-23T20:19:46.16
IV.APPI.EHN. ML:3.3 0.0007769999999999999 1.54 AML other m 2012-06-23T20:19:49.05
IV.ASQU.HHN. ML:3.0 0.000716 0.58 AML other m 2012-06-23T20:19:33.99
IV.ASQU.HHE. ML:3.0 0.0006450000000000001 0.28 AML other m 2012-06-23T20:19:35.65
IV.ATBU.EHE. ML:3.2 0.0005529999999999999 1.58 AML other m 2012-06-23T20:20:02.01
IV.ATCC.EHE. ML:3.3 0.00047099999999999996 0.56 AML other m 2012-06-23T20:20:07.05
IV.ATCC.EHN. ML:3.0 0.000266 1.04 AML other m 2012-06-23T20:20:14.11
IV.ATMC.EHE. ML:3.1 0.0004735 1.02 AML other m 2012-06-23T20:19:49.52
IV.ATMC.EHN. ML:3.1 0.00048350000000000004 0.7 AML other m 2012-06-23T20:20:02.11
IV.ATMI.HHE. ML:3.1 0.00039949999999999995 0.76 AML other m 2012-06-23T20:20:05.04
IV.ATMI.HHN. ML:3.2 0.000526 0.58 AML other m 2012-06-23T20:19:58.37
IV.ATPC.HHN. ML:3.0 0.0003905 0.64 AML other m 2012-06-23T20:20:02.85
IV.ATPC.HHE. ML:3.1 0.000474 0.66 AML other m 2012-06-23T20:20:08.32
IV.ATVO.HHN. ML:3.0 0.00032499999999999993 0.72 AML other m 2012-06-23T20:20:02.57
IV.ATVO.HHE. ML:3.1 0.0003925 0.58 AML other m 2012-06-23T20:19:54.62
IV.BADI.EHE. ML:3.0 0.0004385 0.88 AML other m 2012-06-23T20:19:56.10
IV.BDI.HHE. ML:3.0 0.001048 0.46 AML other m 2012-06-23T20:19:32.62
IV.BDI.HNE. ML:3.1 0.001258 0.92 AML other m 2012-06-23T20:19:32.63
IV.BDI.HHN. ML:3.2 0.001315 0.56 AML other m 2012-06-23T20:19:29.38
IV.BDI.HNN. ML:3.1 0.0011524999999999999 0.42 AML other m 2012-06-23T20:19:29.38
IV.BOB.HHN. ML:3.1 0.0006425000000000001 0.48 AML other m 2012-06-23T20:19:41.50
IV.CMPO.HHE. ML:3.1 0.003345 0.96 AML other m 2012-06-23T20:19:32.58
IV.CMPO.HHN. ML:3.1 0.0030800000000000003 0.42 AML other m 2012-06-23T20:19:13.34
IV.CRE.HHN. ML:3.1 0.000625 0.32 AML other m 2012-06-23T20:19:41.94
IV.CRE.HHE. ML:3.1 0.000717 0.84 AML other m 2012-06-23T20:19:40.73
IV.CTL8.HNE. ML:3.3 0.00147 1.2 AML other m 2012-06-23T20:19:37.97
IV.CTL8.HNN. ML:3.4 0.001535 0.68 AML other m 2012-06-23T20:19:37.06
IV.FIU.EHE. ML:3.3 0.009175 0.5 AML other m 2012-06-23T20:19:24.49
IV.FIU.EHN. ML:3.4 0.011325 0.7 AML other m 2012-06-23T20:19:12.33
IV.FSSB.HHN. ML:3.3 0.0007815 0.78 AML other m 2012-06-23T20:19:53.83
IV.FSSB.HHE. ML:3.2 0.0006205000000000001 0.34 AML other m 2012-06-23T20:19:54.33
IV.IMOL.HNE. ML:3.2 0.00271 0.2 AML other m 2012-06-23T20:19:22.48
IV.IMOL.HNN. ML:3.3 0.0035949999999999997 0.5 AML other m 2012-06-23T20:19:23.09
IV.LEOD.HNN. ML:3.3 0.001665 1.34 AML other m 2012-06-23T20:19:36.00
IV.LEOD.HNE. ML:3.3 0.00165 0.64 AML other m 2012-06-23T20:19:34.43
IV.LNSS.HHN. ML:3.0 0.00014050000000000003 0.8 AML other m 2012-06-23T20:20:27.06
IV.MABI.HHE. ML:3.0 0.000608 1.28 AML other m 2012-06-23T20:19:37.32
IV.MABI.HHN. ML:3.0 0.000547 0.28 AML other m 2012-06-23T20:19:38.61
GU.MAIM.HHN. ML:3.2 0.0010665 0.92 AML other m 2012-06-23T20:19:33.56
GU.MAIM.HHE. ML:3.0 0.0006630000000000001 0.44 AML other m 2012-06-23T20:19:35.56
IV.MGAB.HHE. ML:3.0 0.0002475 0.82 AML other m 2012-06-23T20:20:11.85
IV.MGAB.HHN. ML:3.0 0.0002395 0.74 AML other m 2012-06-23T20:20:11.34
IV.MOMA.HHE. ML:3.0 0.00017199999999999998 0.66 AML other m 2012-06-23T20:20:12.06
IV.MSSA.HHN. ML:3.2 0.0008185 0.9 AML other m 2012-06-23T20:19:43.08
IV.MURB.HHN. ML:3.2 0.000509 1.08 AML other m 2012-06-23T20:20:05.54
IV.MURB.HHE. ML:3.2 0.000502 1.38 AML other m 2012-06-23T20:20:06.82
IV.PESA.HHE. ML:3.2 0.0006575 0.2 AML other m 2012-06-23T20:19:46.37
IV.PESA.HHN. ML:3.0 0.00047799999999999996 1.14 AML other m 2012-06-23T20:19:50.01
IV.PIEI.HHE. ML:3.0 0.00034950000000000004 0.5 AML other m 2012-06-23T20:19:49.62
GU.POPM.HHN. ML:3.1 0.0011899999999999999 0.7 AML other m 2012-06-23T20:19:32.34
IV.SMA1.EHN. ML:3.1 0.0001525 0.64 AML other m 2012-06-23T20:20:31.54
IV.SMA1.EHE. ML:3.1 0.000144 0.74 AML other m 2012-06-23T20:20:42.36
IV.SNTG.HHN. ML:3.0 0.000243 0.3 AML other m 2012-06-23T20:20:02.16
IV.T0819.HNN. ML:3.0 0.00492 0.72 AML other m 2012-06-23T20:19:06.76
IV.T0819.EHN. ML:3.0 0.0047 0.74 AML other m 2012-06-23T20:19:06.76
IV.T0819.EHE. ML:3.1 0.00681 0.68 AML other m 2012-06-23T20:19:06.76
IV.T0819.HNE. ML:3.1 0.006625 0.68 AML other m 2012-06-23T20:19:06.76
IV.T0821.EHE. ML:3.1 0.009415 0.94 AML other m 2012-06-23T20:19:03.75
IV.T0821.HNE. ML:3.1 0.009055 0.94 AML other m 2012-06-23T20:19:04.22
IV.T0821.HNN. ML:3.2 0.01116 0.34 AML other m 2012-06-23T20:19:04.01
IV.T0821.EHN. ML:3.2 0.011349999999999999 0.34 AML other m 2012-06-23T20:19:04.02
IV.T0825.EHN. ML:3.2 0.00657 1.02 AML other m 2012-06-23T20:19:20.33
IV.T0825.EHE. ML:3.4 0.00922 0.32 AML other m 2012-06-23T20:19:14.88
MN.TUE.HHE. ML:3.1 0.0002575 0.38 AML other m 2012-06-23T20:20:02.62
MN.TUE.HHN. ML:3.0 0.000219 0.42 AML other m 2012-06-23T20:20:02.47
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