Earthquake with magnitude of ML 3.1 on date 20-05-2012 and time 09:33:59 (Italy) in region 4 km E Vigarano Mainarda (FE)

A magnitude ML 3.1 earthquake occured in region: 4 km E Vigarano Mainarda (FE), on

  • 20-05-2012 07:33:59 (UTC)
  • 20-05-2012 09:33:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.8340, 11.5490 at 10 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
Vigarano Mainarda FE 4 7694 7694
Ferrara FE 6 133155 140849
Mirabello FE 7 3266 144115
Poggio Renatico FE 9 9852 153967
Occhiobello RO 10 11979 165946
Stienta RO 12 3253 169199
Bondeno FE 12 14655 183854
Malalbergo BO 13 8943 192797
Galliera BO 13 5439 198236
Sant'Agostino FE 14 6853 205089
Gaiba RO 14 1063 206152
Fiesso Umbertiano RO 15 4142 210294
Canaro RO 15 2806 213100
Ficarolo RO 16 2438 215538
Voghiera FE 18 3777 219315
San Pietro in Casale BO 18 12202 231517
Pincara RO 19 1165 232682
Salara RO 19 1160 233842
Finale Emilia MO 20 15699 249541

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km W of Ferrara (133155 inhabitants)
33 Km SW of Rovigo (51867 inhabitants)
41 Km NE of Bologna (386663 inhabitants)
53 Km E of Carpi (70699 inhabitants)
53 Km E of Modena (184973 inhabitants)
55 Km N of Imola (69797 inhabitants)
66 Km NW of Faenza (58541 inhabitants)
69 Km SW of Padova (210401 inhabitants)
69 Km NW of Ravenna (159116 inhabitants)
74 Km E of Reggio nell'Emilia (171345 inhabitants)
78 Km NW of Forlì (117913 inhabitants)
79 Km S of Vicenza (112953 inhabitants)
80 Km SE of Verona (258765 inhabitants)
91 Km SW of Venezia (263352 inhabitants)
95 Km NW of Cesena (96758 inhabitants)
96 Km E of Parma (192836 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 3.1 2012-05-20
07:34:02
44.8982 11.5647 31 2014-10-21
12:19:34
Sala Sismica INGV-Roma 1321821
Bulletin
Rev1000
ML 3.1 2012-05-20
07:33:59
44.834 11.5488 10 2014-09-19
08:14:18
Bollettino Sismico Italiano INGV 4933221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-05-20 07:33:59 ± 0.13
Latitude 44.8340 ± 0.0054
Longitude 11.5488 ± 0.0139
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4933221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1100
Semi-minor axis of confidence ellipse (meter) 550
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.19785
Epicentral distance of station farthest from the epicenter (degree) 1.64126
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 4933221
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:47:08

ML:3.1

Field Value
Value 3.1
Uncertainty 0.2
Num. used stations 0
Type of magnitude ML
Reference to an origin 1321821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-05-20 07:52:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.STAL.HHZ. 2012-05-20T07:34:30.47 0.3 undecidable manual P 29 182.1843 38 -0.92 42
NI.AGOR.HHZ. 2012-05-20T07:34:29.04 0.6 undecidable manual P 14 159.9177 38 1.09 29
IV.PIEI.HHZ. 2012-05-20T07:34:29.04 1.0 undecidable manual P 151 164.0136 38 0.46 18
IV.MSSA.HHZ. 2012-05-20T07:34:29.48 0.6 undecidable manual P 251 170.496 38 -0.1 39
IV.BOB.HHZ. 2012-05-20T07:34:28.97 0.6 undecidable manual P 268 165.5121 38 0.16 39
IV.MABI.HHZ. 2012-05-20T07:34:27.36 0.6 undecidable manual P 330 157.62 38 -0.22 40
NI.POLC.HHZ. 2012-05-20T07:34:26.79 1.0 undecidable manual P 29 151.6371 38 0.13 21
IV.CSNT.HHZ. 2012-05-20T07:34:26.22 0.3 undecidable manual P 188 152.3364 38 -0.55 57
GU.MAIM.HHZ. 2012-05-20T07:34:23.42 0.6 undecidable manual P 220 132.0678 38 -0.2 43
IV.MAGA.HHZ. 2012-05-20T07:34:22.64 0.6 undecidable manual P 326 126.6732 38 -0.15 44
IV.CRMI.HHZ. 2012-05-20T07:34:22.77 0.6 undecidable manual P 202 123.6873 38 0.45 42
IV.SALO.HHZ. 2012-05-20T07:34:21.91 0.3 undecidable manual P 318 118.1928 38 0.44 64
NI.CGRP.HHZ. 2012-05-20T07:34:21.05 1.0 undecidable manual P 10 117.7932 38 -0.35 22
IV.ERBM.EHZ. 2012-05-20T07:34:19.49 0.6 undecidable manual P 243 100.8213 38 0.73 40
GU.POPM.HHZ. 2012-05-20T07:34:19.55 1.0 undecidable manual P 216 107.7144 38 -0.28 22
IV.SFI.EHZ. 2012-05-20T07:34:19.80 0.6 undecidable manual P 167 105.7164 38 0.27 45
IV.SEI.SHZ. 2012-05-20T07:34:17.46 0.6 undecidable manual P 190 87.7455 38 0.72 41
IV.ROVR.HHZ. 2012-05-20T07:34:17.83 0.6 undecidable manual P 338 97.5246 38 -0.43 44
IV.TREG.HNE. 2012-05-20T07:34:16.03 0.6 undecidable manual P 338 82.251 38 0.15 48
IV.BRIS.HHZ. 2012-05-20T07:34:14.84 0.6 undecidable manual P 166 69.7746 38 0.9 39
IV.ZOVE.HNZ. 2012-05-20T07:34:13.45 0.3 undecidable manual P 356 68.8755 38 -0.36 71
IV.NOVE.EHE. 2012-05-20T07:34:13.01 0.6 undecidable manual P 267 65.6898 38 -0.29 49
IV.TEOL.HHZ. 2012-05-20T07:34:12.17 0.6 undecidable manual P 9 59.3961 38 -0.16 51
IV.IMOL.EHZ. 2012-05-20T07:34:12.77 1.0 undecidable manual P 164 54.8007 38 1.15 18
IV.MTRZ.HHE. 2012-05-20T07:34:12.52 0.6 undecidable manual P 190 58.5969 38 0.31 49
IV.SERM.EHE. 2012-05-20T07:34:11.80 0.6 undecidable manual S 315 27.8499 50 -0.52 49
IV.RAVA.EHE. 2012-05-20T07:34:09.27 0.3 undecidable manual P 256 34.9428 50 0.69 68
IV.FIU.EHE. 2012-05-20T07:34:09.10 0.3 undecidable manual S 192 21.9669 50 -0.64 72
IV.SERM.EHE. 2012-05-20T07:34:06.98 0.6 undecidable manual P 315 27.8499 50 0.18 53
IV.FIU.EHE. 2012-05-20T07:34:04.81 0.1 positive manual P 192 21.9669 50 -0.51 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
SI.ABSI.HHE. ML:3.5 0.0008155 0.7 AML other m 2012-05-20T07:35:02.44
SI.ABSI.HHN. ML:3.3 0.000586 0.6 AML other m 2012-05-20T07:35:06.19
NI.AGOR.HHE. ML:2.9 0.0003785 0.36 AML other m 2012-05-20T07:34:52.85
NI.AGOR.HHN. ML:2.9 0.000336 1.04 AML other m 2012-05-20T07:34:59.78
IV.APPI.EHE. ML:3.3 0.0006385000000000001 0.48 AML other m 2012-05-20T07:34:55.09
IV.APPI.EHN. ML:3.2 0.000535 0.46 AML other m 2012-05-20T07:35:02.20
IV.BOB.HHE. ML:3.1 0.0005335 1.36 AML other m 2012-05-20T07:34:51.64
IV.BOB.HHN. ML:3.2 0.0006045 0.6 AML other m 2012-05-20T07:34:59.76
IV.BRIS.HHN. ML:2.5 0.0005035 0.56 AML other m 2012-05-20T07:34:28.09
IV.BRIS.HHE. ML:2.6 0.0006775 0.44 AML other m 2012-05-20T07:34:28.88
NI.CGRP.HHE. ML:3.1 0.0009299999999999999 0.62 AML other m 2012-05-20T07:34:38.63
NI.CGRP.HHN. ML:3.0 0.0008625000000000001 0.7 AML other m 2012-05-20T07:34:41.89
IV.CRMI.HHE. ML:3.0 0.000753 0.64 AML other m 2012-05-20T07:34:41.50
IV.CRMI.HHN. ML:3.0 0.000727 1.12 AML other m 2012-05-20T07:34:40.88
IV.CSNT.HHN. ML:3.0 0.000438 0.72 AML other m 2012-05-20T07:34:47.37
IV.CSNT.HHE. ML:2.8 0.0002985 1 AML other m 2012-05-20T07:34:47.45
IV.ERBM.EHN. ML:2.9 0.0007019999999999999 1.08 AML other m 2012-05-20T07:34:48.74
IV.ERBM.EHE. ML:2.8 0.0006495 0.9 AML other m 2012-05-20T07:34:51.45
RF.GEPF.HHN. ML:3.0 0.00029049999999999996 1.14 AML other m 2012-05-20T07:35:09.24
RF.GEPF.HHE. ML:3.0 0.0002855 0.5 AML other m 2012-05-20T07:35:10.35
SI.KOSI.HHE. ML:3.2 0.0005585 0.56 AML other m 2012-05-20T07:34:57.49
SI.KOSI.HHN. ML:3.2 0.0006295 0.56 AML other m 2012-05-20T07:34:55.99
IV.MABI.HHE. ML:2.5 0.00015899999999999996 0.62 AML other m 2012-05-20T07:34:47.41
IV.MABI.HHN. ML:2.6 0.000186 0.46 AML other m 2012-05-20T07:34:47.55
IV.MAGA.HHN. ML:3.5 0.00226 1.22 AML other m 2012-05-20T07:34:40.28
IV.MAGA.HHE. ML:3.7 0.0036100000000000004 0.76 AML other m 2012-05-20T07:34:43.02
GU.MAIM.HHN. ML:2.9 0.0004885 0.7 AML other m 2012-05-20T07:34:42.51
GU.MAIM.HHE. ML:2.8 0.00036449999999999997 0.42 AML other m 2012-05-20T07:34:42.50
SI.MOSI.HHN. ML:3.6 0.0010795 0.8 AML other m 2012-05-20T07:35:03.19
SI.MOSI.HHE. ML:3.5 0.0008595 0.82 AML other m 2012-05-20T07:35:07.02
IV.MSSA.HHN. ML:2.9 0.00035 0.78 AML other m 2012-05-20T07:34:52.00
IV.MSSA.HHE. ML:3.0 0.000433 0.92 AML other m 2012-05-20T07:34:54.43
IV.PIEI.HHN. ML:2.7 0.00020750000000000003 0.36 AML other m 2012-05-20T07:34:55.13
IV.PIEI.HHE. ML:2.8 0.000307 0.42 AML other m 2012-05-20T07:35:01.85
NI.POLC.HHE. ML:3.2 0.000889 0.84 AML other m 2012-05-20T07:34:52.41
NI.POLC.HHN. ML:3.4 0.00138 0.38 AML other m 2012-05-20T07:34:52.99
GU.POPM.HHE. ML:2.8 0.0005815 0.42 AML other m 2012-05-20T07:34:36.18
GU.POPM.HHN. ML:2.9 0.0006515 0.58 AML other m 2012-05-20T07:34:37.77
IV.PRMA.HHN. ML:2.8 0.000674 1.12 AML other m 2012-05-20T07:34:42.71
IV.PRMA.HHE. ML:3.0 0.0009545 0.36 AML other m 2012-05-20T07:34:36.46
SI.RISI.HHN. ML:3.5 0.00069 0.44 AML other m 2012-05-20T07:35:11.84
SI.RISI.HHE. ML:3.3 0.0004505 0.52 AML other m 2012-05-20T07:35:21.69
IV.ROVR.HHE. ML:3.3 0.00195 1.04 AML other m 2012-05-20T07:34:33.03
IV.ROVR.HHN. ML:3.7 0.00546 0.36 AML other m 2012-05-20T07:34:33.48
NI.SABO.HHE. ML:3.2 0.0004965 0.72 AML other m 2012-05-20T07:35:20.95
NI.SABO.HHN. ML:3.3 0.000568 0.9 AML other m 2012-05-20T07:35:15.03
IV.SALO.HHE. ML:3.2 0.00128 0.66 AML other m 2012-05-20T07:34:38.49
IV.SALO.HHN. ML:3.2 0.001239 1.48 AML other m 2012-05-20T07:34:39.15
IV.SFI.HNE. ML:2.9 0.0007725 1.32 AML other m 2012-05-20T07:34:38.92
IV.SFI.EHE. ML:3.0 0.000836 1.32 AML other m 2012-05-20T07:34:38.92
IV.SFI.HNN. ML:2.8 0.0006459999999999999 0.44 AML other m 2012-05-20T07:34:36.45
IV.SFI.EHN. ML:2.8 0.0006265000000000001 0.38 AML other m 2012-05-20T07:34:36.67
IV.STAL.HNE. ML:3.3 0.000759 0.28 AML other m 2012-05-20T07:35:02.44
IV.STAL.HHN. ML:3.2 0.0006025000000000001 0.3 AML other m 2012-05-20T07:34:59.69
IV.STAL.HHE. ML:3.4 0.0009975000000000001 0.32 AML other m 2012-05-20T07:35:03.82
IV.STAL.HNN. ML:3.3 0.0006635 0.3 AML other m 2012-05-20T07:35:03.81
IV.TEOL.HHE. ML:3.4 0.0056500000000000005 0.38 AML other m 2012-05-20T07:34:25.46
IV.TEOL.HHN. ML:3.3 0.00458 0.3 AML other m 2012-05-20T07:34:25.46
IV.ZOVE.HNE. ML:2.9 0.001415 1.58 AML other m 2012-05-20T07:34:27.40
IV.ZOVE.HNN. ML:3.1 0.00199 0.58 AML other m 2012-05-20T07:34:26.36
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