Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.7 on date 20-05-2012 and time 04:20:39 (Italy) in region 3 km SW Bondeno (FE)

A magnitude ML 3.7 earthquake occured in region: 3 km SW Bondeno (FE), on

  • 20-05-2012 02:20:39 (UTC)
  • 20-05-2012 04:20:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.8670, 11.3980 at 5 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.

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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
Bondeno FE 3 14655 14655
Mirabello FE 7 3266 17921
Sant'Agostino FE 8 6853 24774
Vigarano Mainarda FE 9 7694 32468
Finale Emilia MO 9 15699 48167
Ficarolo RO 10 2438 50605
Gaiba RO 11 1063 51668
Salara RO 13 1160 52828
Poggio Renatico FE 13 9852 62680
Felonica MN 14 1359 64039
Galliera BO 14 5439 69478
Stienta RO 14 3253 72731
Calto RO 14 743 73474
Occhiobello RO 16 11979 85453
Ceneselli RO 17 1719 87172
Sermide MN 17 6189 93361
Cento FE 18 35686 129047
Ferrara FE 18 133155 262202
San Pietro in Casale BO 18 12202 274404
Castelmassa RO 18 4252 278656
Bagnolo di Po RO 18 1293 279949
Pieve di Cento BO 18 7019 286968
Trecenta RO 19 2805 289773
Malalbergo BO 20 8943 298716
Fiesso Umbertiano RO 20 4142 302858
Castelnovo Bariano RO 20 2762 305620

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km W of Ferrara (133155 inhabitants)
38 Km SW of Rovigo (51867 inhabitants)
41 Km E of Carpi (70699 inhabitants)
42 Km N of Bologna (386663 inhabitants)
45 Km NE of Modena (184973 inhabitants)
62 Km NW of Imola (69797 inhabitants)
63 Km E of Reggio nell'Emilia (171345 inhabitants)
71 Km SW of Padova (210401 inhabitants)
71 Km SE of Verona (258765 inhabitants)
75 Km NW of Faenza (58541 inhabitants)
77 Km S of Vicenza (112953 inhabitants)
81 Km NW of Ravenna (159116 inhabitants)
85 Km E of Parma (192836 inhabitants)
88 Km NW of Forlì (117913 inhabitants)
97 Km SW of Venezia (263352 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 3.8 2012-05-20
02:20:43		 44.9053 11.3952 10 2014-10-21
12:19:34		 Sala Sismica INGV-Roma 1371121
Bulletin
Rev1000 		ML 3.7 2012-05-20
02:20:39		 44.8672 11.398 5 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 4854441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-05-20 02:20:39 ± 0.14
Latitude 44.8672 ± 0.0054
Longitude 11.3980 ± 0.0140
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4854441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1120
Semi-minor axis of confidence ellipse (meter) 580
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
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) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.16008
Epicentral distance of station farthest from the epicenter (degree) 1.15203
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:3.7

Field Value
Value 3.7
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 4854441
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:47:04

ML:3.8

Field Value
Value 3.8
Uncertainty 0.3
Num. used stations 0
Type of magnitude ML
Reference to an origin 1371121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-05-23 19:49:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.MAIM.HHZ. 2012-05-20T02:21:04.61 0.3 undecidable manual P 215 127.872 38 0.35 61
IV.CNCS.HNZ. 2012-05-20T02:21:03.42 0.3 undecidable manual P 312 123.3876 38 -0.15 64
IV.BDI.HHZ. 2012-05-20T02:21:02.45 0.3 undecidable manual P 216 109.5126 38 1.04 49
IV.SFI.EHZ. 2012-05-20T02:21:02.35 0.3 undecidable manual P 161 112.4985 38 0.47 62
IV.MAGA.HHZ. 2012-05-20T02:21:02.24 0.6 undecidable manual P 329 117.2937 38 -0.37 42
IV.ASOL.HNZ. 2012-05-20T02:21:01.93 0.3 undecidable manual P 21 110.7003 38 0.33 64
IV.VOBA.HNZ. 2012-05-20T02:21:01.52 0.3 undecidable manual P 321 110.8002 38 -0.09 67
IV.ZEN8.HNZ. 2012-05-20T02:20:59.82 0.3 undecidable manual P 329 100.0221 38 -0.12 68
IV.PRMA.HHZ. 2012-05-20T02:20:58.07 0.1 undecidable manual P 263 86.1471 38 0.29 90
IV.ROVR.HHZ. 2012-05-20T02:20:58.33 0.6 undecidable manual P 344 90.1431 38 -0.07 47
IV.SANR.HNZ. 2012-05-20T02:20:58.05 0.3 undecidable manual P 11 87.3459 38 0.09 70
IV.BRIS.HHZ. 2012-05-20T02:20:58.22 0.3 undecidable manual P 158 77.0673 38 1.86 32
IV.FNVD.HHZ. 2012-05-20T02:20:57.76 0.6 undecidable manual P 196 80.5638 38 0.84 38
IV.IMOL.EHZ. 2012-05-20T02:20:56.00 0.6 undecidable manual P 154 62.5929 38 1.88 21
IV.TREG.HNZ. 2012-05-20T02:20:55.37 0.6 undecidable manual P 346 75.0693 38 -0.69 41
IV.ZCCA.HHZ. 2012-05-20T02:20:54.75 0.3 undecidable manual P 210 66.2781 38 0.06 74
IV.MTRZ.HHE. 2012-05-20T02:20:54.21 0.6 undecidable manual P 178 61.494 38 0.25 48
IV.ZOVE.HNZ. 2012-05-20T02:20:53.56 0.3 undecidable manual P 6 65.3901 38 -1 54
IV.MNTV.HNE. 2012-05-20T02:20:53.66 0.6 undecidable manual P 303 57.0984 38 0.39 46
IV.TEOL.HHZ. 2012-05-20T02:20:52.79 0.3 undecidable manual P 21 58.9965 38 -0.77 61
IV.NOVE.EHE. 2012-05-20T02:20:52.90 1.0 undecidable manual P 262 54.2013 38 0.08 25
IV.FIU.EHE. 2012-05-20T02:20:52.02 0.3 undecidable manual S 164 26.2515 50 -1.22 52
IV.RAVA.EHZ. 2012-05-20T02:20:51.71 0.6 undecidable manual S 241 25.2525 50 -1.08 38
IV.MODE.HNE. 2012-05-20T02:20:51.86 0.6 undecidable manual P 233 44.1225 50 0.22 49
IV.SBPO.HHE. 2012-05-20T02:20:51.85 0.6 undecidable manual P 299 42.7239 50 0.55 46
IV.OPPE.HNZ. 2012-05-20T02:20:51.90 0.6 undecidable manual P 340 52.0035 38 -0.58 44
IV.SERM.EHZ. 2012-05-20T02:20:49.73 0.3 undecidable manual S 333 17.7711 106 -0.12 79
IV.FIU.EHE. 2012-05-20T02:20:46.74 0.1 undecidable manual P 164 26.2515 50 -0.43 98
IV.RAVA.EHZ. 2012-05-20T02:20:46.47 0.1 undecidable manual P 241 25.2525 50 -0.44 97
IV.SERM.EHZ. 2012-05-20T02:20:45.61 0.1 undecidable manual P 333 17.7711 106 0.38 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APPI.EHN. ML:4.2 0.0061600000000000005 1 AML other m 2012-05-20T02:21:53.15
IV.ASOL.HNE. ML:4.2 0.014150000000000001 0.58 AML other m 2012-05-20T02:21:41.95
IV.ASOL.HNN. ML:4.1 0.01066 0.48 AML other m 2012-05-20T02:21:46.27
IV.ATBU.EHN. ML:3.7 0.001905 0.6 AML other m 2012-05-20T02:21:48.26
IV.ATBU.EHE. ML:3.7 0.0020350000000000004 1.02 AML other m 2012-05-20T02:21:55.36
IV.BDI.HNN. ML:3.8 0.005050000000000001 0.46 AML other m 2012-05-20T02:21:21.60
IV.BDI.HHN. ML:3.8 0.005775000000000001 0.5 AML other m 2012-05-20T02:21:21.37
IV.BDI.HHE. ML:3.7 0.00411 0.7 AML other m 2012-05-20T02:21:38.78
IV.BDI.HNE. ML:3.7 0.00471 0.52 AML other m 2012-05-20T02:22:20.27
IV.BRIS.HHN. ML:3.2 0.00213 0.82 AML other m 2012-05-20T02:21:38.86
IV.BRIS.HNN. ML:3.6 0.00526 0.78 AML other m 2012-05-20T02:21:38.86
IV.BRIS.HHE. ML:3.2 0.0023250000000000002 0.38 AML other m 2012-05-20T02:21:33.75
IV.BRIS.HNE. ML:3.6 0.005865 0.38 AML other m 2012-05-20T02:21:33.75
IV.BRMO.HHE. ML:3.7 0.001485 1.46 AML other m 2012-05-20T02:22:03.08
IV.BRMO.HHN. ML:3.8 0.001965 0.58 AML other m 2012-05-20T02:21:55.75
NI.CGRP.HHN. ML:3.9 0.005925 1.16 AML other m 2012-05-20T02:21:46.23
NI.CGRP.HHE. ML:3.8 0.005085 1.26 AML other m 2012-05-20T02:21:38.21
IV.CPGN.HNE. ML:3.6 0.002435 1.18 AML other m 2012-05-20T02:21:38.99
IV.CPGN.EHE. ML:3.7 0.002895 1.22 AML other m 2012-05-20T02:21:39.02
IV.CPGN.HNN. ML:3.6 0.002055 0.72 AML other m 2012-05-20T02:21:48.48
IV.CPGN.EHN. ML:3.5 0.00188 0.94 AML other m 2012-05-20T02:21:48.02
IV.CRMI.HHN. ML:3.4 0.00196 0.76 AML other m 2012-05-20T02:21:39.44
IV.CRMI.HHE. ML:3.3 0.00135 0.96 AML other m 2012-05-20T02:21:52.15
IV.CSNT.HHN. ML:3.4 0.0013399999999999998 0.72 AML other m 2012-05-20T02:21:46.84
IV.CSNT.HHE. ML:3.3 0.0010190000000000002 0.74 AML other m 2012-05-20T02:21:53.47
IV.CTL8.EHN. ML:3.8 0.00359 0.78 AML other m 2012-05-20T02:21:42.58
IV.CTL8.EHE. ML:3.8 0.0035299999999999997 0.48 AML other m 2012-05-20T02:21:42.85
IV.FNVD.HHE. ML:3.5 0.004200000000000001 0.78 AML other m 2012-05-20T02:21:31.47
IV.FNVD.HHN. ML:3.7 0.00679 0.78 AML other m 2012-05-20T02:21:30.92
IV.IMOL.HNE. ML:3.7 0.010475 0.94 AML other m 2012-05-20T02:22:04.79
IV.IMOL.HNN. ML:3.7 0.01041 0.8 AML other m 2012-05-20T02:21:54.17
GU.MAIM.HHN. ML:3.7 0.0034850000000000003 0.72 AML other m 2012-05-20T02:21:23.83
GU.MAIM.HHE. ML:3.6 0.00279 0.76 AML other m 2012-05-20T02:21:41.43
IV.MSSA.HHN. ML:4.0 0.004445 1.22 AML other m 2012-05-20T02:21:49.42
IV.MSSA.HHE. ML:3.8 0.00279 0.72 AML other m 2012-05-20T02:21:49.29
IV.OPPE.HNN. ML:3.9 0.021 0.96 AML other m 2012-05-20T02:21:26.64
IV.OPPE.HNE. ML:3.9 0.0205 1.2 AML other m 2012-05-20T02:21:38.69
GU.PCP.HHN. ML:3.8 0.0012749999999999999 0.94 AML other m 2012-05-20T02:22:04.36
GU.PCP.HHE. ML:3.7 0.0011055 0.86 AML other m 2012-05-20T02:22:29.82
IV.PLMA.HHE. ML:3.8 0.003185 0.62 AML other m 2012-05-20T02:22:19.21
IV.PLMA.HHN. ML:3.8 0.0033049999999999998 0.8 AML other m 2012-05-20T02:22:18.91
GU.POPM.HHE. ML:3.6 0.004019999999999999 1.04 AML other m 2012-05-20T02:21:39.27
GU.POPM.HHN. ML:3.8 0.00521 0.7 AML other m 2012-05-20T02:21:36.36
IV.PRMA.HHN. ML:3.7 0.00596 0.76 AML other m 2012-05-20T02:21:14.60
IV.PRMA.HHE. ML:3.7 0.00598 1.52 AML other m 2012-05-20T02:21:15.56
IV.SANR.HNE. ML:4.2 0.01765 0.86 AML other m 2012-05-20T02:21:31.51
IV.SFI.EHN. ML:3.6 0.002955 0.58 AML other m 2012-05-20T02:21:19.14
IV.SFI.HNN. ML:3.5 0.002855 0.58 AML other m 2012-05-20T02:21:19.14
IV.SFI.HNE. ML:3.6 0.00303 1.1 AML other m 2012-05-20T02:21:43.51
IV.SFI.EHE. ML:3.6 0.0031349999999999998 1.08 AML other m 2012-05-20T02:21:43.52
IV.TEOL.HHE. ML:4.1 0.029349999999999998 0.7 AML other m 2012-05-20T02:21:26.42
IV.TEOL.HHN. ML:3.8 0.012600000000000002 0.66 AML other m 2012-05-20T02:21:24.10
IV.TREG.HNE. ML:3.7 0.007449999999999999 1.52 AML other m 2012-05-20T02:21:29.24
IV.TREG.HNN. ML:4.0 0.01455 0.18 AML other m 2012-05-20T02:21:28.35
IV.ZCCA.HHN. ML:3.6 0.007149999999999999 1.58 AML other m 2012-05-20T02:21:18.89
IV.ZCCA.HNE. ML:3.5 0.005745 0.8 AML other m 2012-05-20T02:21:35.75
IV.ZCCA.HHE. ML:3.5 0.00605 0.82 AML other m 2012-05-20T02:21:35.76
IV.ZCCA.HNN. ML:3.6 0.007244999999999999 0.82 AML other m 2012-05-20T02:21:37.69
IV.ZOVE.HNN. ML:3.9 0.013399999999999999 0.2 AML other m 2012-05-20T02:21:26.29
IV.ZOVE.HNE. ML:3.8 0.011755 1.16 AML other m 2012-05-20T02:21:25.59
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