Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 20-05-2012 and time 07:39:56 (Italy) in region 4 km NE Sant'Agostino (FE)

A magnitude ML 2.1 earthquake occured in region: 4 km NE Sant'Agostino (FE), on

  • 20-05-2012 05:39:56 (UTC)
  • 20-05-2012 07:39:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.8260, 11.4090 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sant'Agostino FE 4 6853 6853
Mirabello FE 4 3266 10119
Bondeno FE 7 14655 24774
Vigarano Mainarda FE 8 7694 32468
Finale Emilia MO 9 15699 48167
Poggio Renatico FE 9 9852 58019
Galliera BO 9 5439 63458
San Pietro in Casale BO 14 12202 75660
Ficarolo RO 14 2438 78098
Cento FE 14 35686 113784
Pieve di Cento BO 15 7019 120803
Gaiba RO 15 1063 121866
Malalbergo BO 15 8943 130809
Stienta RO 17 3253 134062
Ferrara FE 17 133155 267217
Occhiobello RO 17 11979 279196
Salara RO 18 1160 280356
Felonica MN 18 1359 281715
Castello d'Argile BO 18 6550 288265
Calto RO 19 743 289008
San Giorgio di Piano BO 20 8512 297520

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km W of Ferrara (133155 inhabitants)
37 Km N of Bologna (386663 inhabitants)
41 Km SW of Rovigo (51867 inhabitants)
42 Km E of Carpi (70699 inhabitants)
43 Km E of Modena (184973 inhabitants)
58 Km NW of Imola (69797 inhabitants)
63 Km E of Reggio nell'Emilia (171345 inhabitants)
71 Km NW of Faenza (58541 inhabitants)
74 Km SW of Padova (210401 inhabitants)
76 Km SE of Verona (258765 inhabitants)
77 Km NW of Ravenna (159116 inhabitants)
81 Km S of Vicenza (112953 inhabitants)
84 Km NW of Forlì (117913 inhabitants)
85 Km E of Parma (192836 inhabitants)
100 Km SW of Venezia (263352 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 2.1 2012-05-20
05:39:58		 44.8073 11.4608 6 2014-10-21
12:19:34		 Sala Sismica INGV-Roma 1318431
Bulletin
Rev1000 		ML 2.1 2012-05-20
05:39:56		 44.826 11.4092 10 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 4915231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-05-20 05:39:56 ± 0.16
Latitude 44.8260 ± 0.0072
Longitude 11.4092 ± 0.0127
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4915231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 970
Semi-minor axis of confidence ellipse (meter) 780
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.19425
Epicentral distance of station farthest from the epicenter (degree) 1.65655
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 4915231
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:47:07

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 0
Type of magnitude ML
Reference to an origin 1318431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-05-20 05:56:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SI.KOSI.HHZ. 2012-05-20T05:40:28.80 0.3 undecidable manual P 359 181.5849 38 0.46 58
IV.APPI.EHZ. 2012-05-20T05:40:28.79 0.6 undecidable manual P 356 183.8826 38 0.1 42
IV.MABI.HHZ. 2012-05-20T05:40:24.08 0.6 undecidable manual P 333 153.1356 38 0.17 48
IV.MAGA.HHZ. 2012-05-20T05:40:19.25 0.6 undecidable manual P 330 121.6893 38 0.22 51
NI.CGRP.HHZ. 2012-05-20T05:40:19.08 0.6 undecidable manual P 15 120.99 38 0.16 52
IV.SALO.HHZ. 2012-05-20T05:40:18.16 1.0 undecidable manual P 322 111.7992 38 0.66 23
IV.ROVR.HHE. 2012-05-20T05:40:14.80 0.6 undecidable manual P 344 94.8384 38 -0.05 56
IV.ZOVE.HNE. 2012-05-20T05:40:10.63 0.3 undecidable manual P 5 69.8745 38 -0.35 82
IV.TEOL.HHZ. 2012-05-20T05:40:09.68 0.3 undecidable manual P 19 62.8926 38 -0.22 85
IV.NOVE.EHE. 2012-05-20T05:40:07.21 0.3 undecidable manual P 267 54.6009 -1.4 54
IV.RAVA.EHZ. 2012-05-20T05:40:07.40 0.3 undecidable manual S 251 24.1536 50 -0.32 90
IV.FIU.EHZ. 2012-05-20T05:40:06.70 0.3 undecidable manual S 162 21.5673 50 0.09 95
IV.RAVA.EHZ. 2012-05-20T05:40:03.75 0.1 negative manual P 251 24.1536 50 0.85 100
IV.FIU.EHZ. 2012-05-20T05:40:02.13 0.3 undecidable manual P 162 21.5673 50 -0.13 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
NI.CGRP.HHE. ML:1.8 0.000043249999999999994 1.58 AML other m 2012-05-20T05:40:41.65
NI.CGRP.HHN. ML:1.9 0.00006264999999999999 0.66 AML other m 2012-05-20T05:40:47.02
IV.FIU.EHN. ML:2.2 0.0011610000000000001 0.14 AML other m 2012-05-20T05:40:06.80
IV.FIU.EHE. ML:2.1 0.0008320000000000001 0.12 AML other m 2012-05-20T05:40:06.90
IV.FNVD.HHE. ML:1.6 0.0000663 1 AML other m 2012-05-20T05:40:31.84
IV.FNVD.HHN. ML:1.7 0.00007295 0.46 AML other m 2012-05-20T05:40:32.20
IV.MABI.HHE. ML:1.7 0.0000249 0.64 AML other m 2012-05-20T05:40:43.89
IV.MABI.HHN. ML:1.6 0.0000201 1.44 AML other m 2012-05-20T05:40:43.10
IV.MAGA.HHE. ML:2.8 0.000491 0.38 AML other m 2012-05-20T05:40:36.63
IV.MAGA.HHN. ML:2.8 0.000448 0.48 AML other m 2012-05-20T05:40:36.64
IV.RAVA.EHN. ML:3.2 0.01075 0.76 AML other m 2012-05-20T05:40:07.64
IV.RAVA.EHE. ML:3.1 0.008414999999999999 0.24 AML other m 2012-05-20T05:40:59.67
IV.SALO.HHN. ML:2.3 0.00016099999999999998 1.12 AML other m 2012-05-20T05:40:35.04
IV.SALO.HHE. ML:2.2 0.0001283 0.98 AML other m 2012-05-20T05:40:34.49
IV.TEOL.HHE. ML:2.2 0.00028149999999999996 0.68 AML other m 2012-05-20T05:40:27.97
IV.TEOL.HHN. ML:2.0 0.0001715 0.42 AML other m 2012-05-20T05:40:27.85
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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