ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 2.2 on date 20-05-2012 and time 16:26:06 (Italy) in region 3 km NE San Felice sul Panaro (MO)

A magnitude ML 2.2 earthquake occured in region: 3 km NE San Felice sul Panaro (MO), on

  • 20-05-2012 14:26:06 (UTC)
  • 20-05-2012 16:26:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.86, 11.17 at 0 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Felice sul Panaro MO 3 10900 10900
Medolla MO 8 6308 17208
Camposanto MO 8 3201 20409
Mirandola MO 9 23875 44284
Finale Emilia MO 11 15699 59983
Cavezzo MO 11 7026 67009
Poggio Rusco MN 14 6625 73634
San Giovanni del Dosso MN 14 1248 74882
San Possidonio MO 14 3619 78501
San Prospero MO 14 5860 84361
Crevalcore BO 15 13465 97826
Concordia sulla Secchia MO 16 8641 106467
Villa Poma MN 16 2023 108490
Ravarino MO 16 6233 114723
Schivenoglia MN 16 1203 115926
Magnacavallo MN 16 1561 117487
San Giacomo delle Segnate MN 16 1639 119126
Cento FE 18 35686 154812
Bomporto MO 18 10157 164969
Sant'Agostino FE 19 6853 171822
Sermide MN 19 6189 178011
Pieve di Cento BO 20 7019 185030
Bastiglia MO 20 4193 189223
Pieve di Coriano MN 20 1035 190258
Felonica MN 20 1359 191617

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Carpi (70699 inhabitants)
30 Km NE of Modena (184973 inhabitants)
36 Km W of Ferrara (133155 inhabitants)
43 Km NW of Bologna (386663 inhabitants)
46 Km E of Reggio nell'Emilia (171345 inhabitants)
54 Km W of Rovigo (51867 inhabitants)
66 Km S of Verona (258765 inhabitants)
66 Km E of Parma (192836 inhabitants)
71 Km NW of Imola (69797 inhabitants)
82 Km SW of Vicenza (112953 inhabitants)
82 Km SW of Padova (210401 inhabitants)
85 Km NW of Faenza (58541 inhabitants)
95 Km E of Cremona (71901 inhabitants)
95 Km NW of Ravenna (159116 inhabitants)
99 Km NW of Forlì (117913 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 2.2 2012-05-20
14:26:06
44.86 11.17 0 2014-09-19
08:14:18
Bollettino Sismico Italiano INGV integrato con i dati della Rete Sismica di emergenza 5890201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-05-20 14:26:06 ± 0.18
Latitude 44.86 ± 0.00
Longitude 11.17 ± 0.01
Depth (km) 0 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> REMO-INGV
Event type earthquake
Origin ID 5890201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1621
Semi-minor axis of confidence ellipse (meter) 398
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 149
Circular confidence region, given by single value of horizontal uncertainty (meter) 900
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3453
Epicentral distance of station closest to the epicenter (degree) 0.11062
Epicentral distance of station farthest from the epicenter (degree) 1.11336
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 5890201
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:47:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
NI.CGRP.HHZ. 2012-05-20T14:26:28.45 0.6 negative manual P 24 1.1134 0 3.7
IV.SEI.SHZ. 2012-05-20T14:26:25.61 0.6 negative manual P 170 0.8175 1.61 0.55
IV.MAGA.HHZ. 2012-05-20T14:26:25.71 0.6 negative manual P 338 0.9902 -0.62 0.65
IV.SALO.HHZ. 2012-05-20T14:26:24.83 0.6 negative manual P 329 0.8831 -0.22 0.41
IV.ROVR.HHZ. 2012-05-20T14:26:22.78 0.6 negative manual P 355 0.7887 -0.19 0.32
IV.MTRZ.HHZ. 2012-05-20T14:26:21.60 0.6 negative manual P 161 0.5774 1.49 0.28
IV.ZCCA.HHZ. 2012-05-20T14:26:20.33 0.3 negative manual P 195 0.5279 1.12 0.14
IV.SERM.HNZ. 2012-05-20T14:26:11.70 0.6 positive manual P 31 0.1745 -0.13 0.25
IV.RAVA.EHZ. 2012-05-20T14:26:10.07 0.1 negative manual P 198 0.1106 -0.13 0.05
IV.T0822.EHZ. 2012-05-20T14:26:10.54 0.1 positive manual P 102 0.1295 -0.05 0.05
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAVA.EHE. ML:3.1 0.0173500005 0.24 AML other m 2012-05-20T14:26:18.74
IV.RAVA.EHN. ML:3.2 0.0220500005 0.52 AML other m 2012-05-20T14:26:19.03
IV.FIU.EHE. ML:2.4 0.0009655 0.8 AML other m 2012-05-20T14:26:43.69
IV.FIU.EHN. ML:2.4 0.0009895 0.7 AML other m 2012-05-20T14:26:45.78
IV.ZCCA.HNE. ML:2 0.0002255 1.28 AML other m 2012-05-20T14:26:35.81
IV.ZCCA.HNN. ML:2.1 0.0002685 0.92 AML other m 2012-05-20T14:26:47.13
IV.ZCCA.HHE. ML:1.9 0.0001565 0.46 AML other m 2012-05-20T14:26:36.46
IV.ZCCA.HHN. ML:2 0.0001995 0.52 AML other m 2012-05-20T14:26:33.15
IV.TEOL.HHE. ML:2.3 0.000379 0.88 AML other m 2012-05-20T14:26:34.03
IV.TEOL.HHN. ML:2.1 0.000223 1.34 AML other m 2012-05-20T14:26:37.61
IV.IMOL.HNE. ML:3 0.001555 0.06 AML other m 2012-05-20T14:27:07.35
IV.IMOL.HNN. ML:2.8 0.0011035 0.06 AML other m 2012-05-20T14:27:07.35
IV.ROVR.HHE. ML:2.5 0.0003555 0.34 AML other m 2012-05-20T14:26:42.48
IV.ROVR.HHN. ML:2.5 0.000388 0.34 AML other m 2012-05-20T14:26:43.34
IV.SALO.HHE. ML:2.3 0.000208 0.64 AML other m 2012-05-20T14:26:45.86
IV.SALO.HHN. ML:2.3 0.000225 0.62 AML other m 2012-05-20T14:26:46.48
IV.SFI.EHE. ML:1.8 5.355E-5 0.74 AML other m 2012-05-20T14:26:55.58
IV.SFI.EHN. ML:1.9 6.1E-5 1.2 AML other m 2012-05-20T14:26:48.04
NI.CGRP.HHE. ML:2.1 8.73E-5 0.94 AML other m 2012-05-20T14:26:55.34
NI.CGRP.HHN. ML:2.2 0.0001145 1.22 AML other m 2012-05-20T14:26:54.39
IV.ASQU.HHE. ML:1.9 5.325E-5 0.6 AML other m 2012-05-20T14:26:51.01
IV.ASQU.HHN. ML:1.9 5.76E-5 0.58 AML other m 2012-05-20T14:26:51.25
IV.MABI.HHE. ML:1.9 4.11E-5 0.38 AML other m 2012-05-20T14:26:56.77
IV.MABI.HHN. ML:1.6 2.16E-5 0.6 AML other m 2012-05-20T14:26:53.12
SI.ABSI.HHE. ML:2.6 0.000112 0.72 AML other m 2012-05-20T14:27:14.36
SI.ABSI.HHN. ML:2.5 9.315E-5 0.58 AML other m 2012-05-20T14:27:14.34
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://cnt.rm.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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 full SEED format Download