Earthquake with magnitude of ML 4.8 on date 20-05-2012 and time 04:06:26 (Italy) in region 7 km N San Felice sul Panaro (MO)

A magnitude ML 4.8 earthquake occured in region: 7 km N San Felice sul Panaro (MO), on

  • 20-05-2012 02:06:26 (UTC)
  • 20-05-2012 04:06:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.9, 11.16 at 4 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
San Felice sul Panaro MO 7 10900 10900
Mirandola MO 8 23875 34775
Poggio Rusco MN 9 6625 41400
Medolla MO 10 6308 47708
San Giovanni del Dosso MN 10 1248 48956
Villa Poma MN 11 2023 50979
Magnacavallo MN 11 1561 52540
Schivenoglia MN 12 1203 53743
San Giacomo delle Segnate MN 13 1639 55382
Cavezzo MO 13 7026 62408
Camposanto MO 13 3201 65609
Finale Emilia MO 13 15699 81308
San Possidonio MO 13 3619 84927
Concordia sulla Secchia MO 14 8641 93568
Pieve di Coriano MN 15 1035 94603
Carbonara di Po MN 16 1297 95900
Sermide MN 16 6189 102089
Borgofranco sul Po MN 17 784 102873
Castelnovo Bariano RO 17 2762 105635
Castelmassa RO 17 4252 109887
San Prospero MO 17 5860 115747
Felonica MN 17 1359 117106
Revere MN 17 2521 119627
Melara RO 18 1803 121430
Quingentole MN 18 1203 122633
Calto RO 18 743 123376
Ostiglia MN 19 6818 130194
Quistello MN 19 5595 135789
Bergantino RO 19 2565 138354
Serravalle a Po MN 19 1541 139895

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NE of Carpi (70699 inhabitants)
34 Km NE of Modena (184973 inhabitants)
37 Km W of Ferrara (133155 inhabitants)
48 Km NW of Bologna (386663 inhabitants)
48 Km E of Reggio nell'Emilia (171345 inhabitants)
53 Km W of Rovigo (51867 inhabitants)
61 Km S of Verona (258765 inhabitants)
67 Km E of Parma (192836 inhabitants)
75 Km NW of Imola (69797 inhabitants)
78 Km SW of Vicenza (112953 inhabitants)
79 Km SW of Padova (210401 inhabitants)
89 Km NW of Faenza (58541 inhabitants)
93 Km E of Cremona (71901 inhabitants)
98 Km NW of Ravenna (159116 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

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 adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent 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
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 100 ML 4.8 2012-05-20
02:06:30
44.89 11.19 8 2014-10-21
12:19:34
Sala Sismica INGV-Roma 1370521
Rev 1000 ML 4.8 2012-05-20
02:06:26
44.91 11.17 4 2014-09-19
08:14:18
Bollettino Sismico Italiano INGV 2047701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-05-20 02:06:26 ± 0.22
Latitude 44.91 ± 0.00
Longitude 11.17 ± 0.01
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 2047701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 648
Semi-minor axis of confidence ellipse (meter) 359
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 103
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.15288
Epicentral distance of station farthest from the epicenter (degree) 1.57291
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:4.8

Field Value
Value 4.8
Uncertainty 0.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 2047701
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:31:49

ML:4.8

Field Value
Value 4.8
Uncertainty 0.2
Num. used stations 0
Type of magnitude ML
Reference to an origin 1370521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-05-23 17:17:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
SI.KOSI.HHZ. 2012-05-20T02:06:59.18 0.6 undecidable manual P 5 1.5639 38 0.2 35
IV.APPI.EHZ. 2012-05-20T02:06:58.65 0.3 undecidable manual P 2 1.5729 38 -0.49 48
NI.AGOR.HHZ. 2012-05-20T02:06:57.72 0.6 undecidable manual P 25 1.4632 38 0.47 34
IV.FRE8.HNZ. 2012-05-20T02:06:55.77 0.6 undecidable manual P 37 1.3877 38 -0.18 38
IV.MABI.HHZ. 2012-05-20T02:06:54.26 0.6 undecidable manual P 339 1.2366 38 0.93 31
IV.SFI.EHE. 2012-05-20T02:06:51.33 0.6 undecidable manual P 154 1.1116 38 0.14 41
GU.MAIM.HHE. 2012-05-20T02:06:51.69 0.6 undecidable manual P 206 1.1008 38 0.69 36
IV.CRND.HNZ. 2012-05-20T02:06:50.78 0.1 undecidable manual P 32 1.1044 38 -0.28 81
IV.ASOL.HNZ. 2012-05-20T02:06:50.07 0.3 undecidable manual P 30 1.0333 38 0.23 62
NI.CGRP.HHZ. 2012-05-20T02:06:50.22 0.6 undecidable manual P 24 1.0729 38 -0.3 40
IV.LEOD.HNE. 2012-05-20T02:06:49.20 0.6 undecidable manual P 307 0.9182 38 1.34 27
IV.BAG8.HNZ. 2012-05-20T02:06:49.68 0.3 undecidable manual P 332 1.0405 38 -0.27 61
IV.BDI.HNZ. 2012-05-20T02:06:48.78 0.6 undecidable manual P 206 0.9344 38 0.65 38
IV.PTF.SHZ. 2012-05-20T02:06:48.63 0.6 undecidable manual P 184 0.947 38 0.29 42
IV.CNCS.HNE. 2012-05-20T02:06:48.95 0.6 undecidable manual P 317 0.9668 38 0.25 42
IV.MAGA.HHE. 2012-05-20T02:06:47.52 0.6 undecidable manual P 337 0.9479 38 -0.84 35
IV.FIU.EHE. 2012-05-20T02:06:46.60 0.6 undecidable manual S 139 0.3516 50 0.09 49
IV.SALO.HHE. 2012-05-20T02:06:46.56 0.6 undecidable manual P 328 0.8436 38 0 45
IV.SANR.HNZ. 2012-05-20T02:06:45.83 0.6 undecidable manual P 23 0.7986 38 0.05 45
IV.FNVD.HHE. 2012-05-20T02:06:45.42 0.6 undecidable manual P 182 0.7374 38 0.69 39
IV.NOVE.EHE. 2012-05-20T02:06:45.50 0.6 undecidable manual S 252 0.3354 50 -0.22 48
IV.ZEN8.HNE. 2012-05-20T02:06:45.57 0.6 undecidable manual P 338 0.7932 38 -0.12 45
IV.MODE.HNZ. 2012-05-20T02:06:44.00 0.6 undecidable manual S 209 0.3148 50 -0.72 42
IV.ROVR.HHE. 2012-05-20T02:06:44.92 0.6 undecidable manual P 355 0.7437 38 0.07 46
IV.IMOL.EHE. 2012-05-20T02:06:43.69 0.6 undecidable manual P 143 0.6826 38 -0.1 46
IV.ZOVE.HNE. 2012-05-20T02:06:41.75 0.6 undecidable manual P 22 0.5936 38 -0.5 43
IV.TEOL.HHZ. 2012-05-20T02:06:41.19 0.3 undecidable manual P 38 0.5801 38 -0.84 56
IV.OPPE.HNE. 2012-05-20T02:06:40.06 0.6 undecidable manual P 1 0.4029 50 0.71 41
IV.FIU.EHE. 2012-05-20T02:06:37.82 0.6 undecidable manual P 139 0.3516 50 -0.1 49
IV.MODE.HNZ. 2012-05-20T02:06:37.07 0.3 undecidable manual P 209 0.3148 50 0.17 73
IV.MNTV.HNE. 2012-05-20T02:06:37.85 0.6 undecidable manual P 313 0.3606 50 -0.32 47
IV.NOVE.EHE. 2012-05-20T02:06:37.48 0.6 undecidable manual P 252 0.3354 50 0.01 50
IV.RAVA.EHZ. 2012-05-20T02:06:36.30 0.3 undecidable manual S 192 0.1529 104 -0.39 72
IV.RAVA.EHZ. 2012-05-20T02:06:32.52 0.1 undecidable manual P 192 0.1529 104 0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BAG8.HNE. ML:4.5 0.0276 1.32 AML other m 2012-05-20T02:07:08.33
IV.BAG8.HNN. ML:4.6 0.03495 0.46 AML other m 2012-05-20T02:07:09.48
IV.CRND.HNN. ML:4.8 0.0425 0.86 AML other m 2012-05-20T02:07:08.74
IV.CRND.HNE. ML:4.8 0.05005 0.46 AML other m 2012-05-20T02:07:08.41
IV.TEOL.HHN. ML:4.8 0.128 0.96 AML other m 2012-05-20T02:06:55.02
IV.TEOL.HHE. ML:5 0.1675 1.04 AML other m 2012-05-20T02:07:54.97
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://terremoti.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