Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 02-11-2011 and time 20:31:32 (Italy) in region 7 km W Castel del Rio (BO)

A magnitude ML 2.0 earthquake occured in region: 7 km W Castel del Rio (BO), on

  • 02-11-2011 19:31:32 (UTC)
  • 02-11-2011 20:31:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1990, 11.4200 at 27 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
Castel del Rio BO 7 1246 1246
Monghidoro BO 9 3749 4995
Firenzuola FI 10 4726 9721
Loiano BO 11 4294 14015
Fontanelice BO 13 1943 15958
Palazzuolo sul Senio FI 14 1154 17112
Monterenzio BO 14 6035 23147
Monzuno BO 15 6328 29475
San Benedetto Val di Sambro BO 15 4315 33790
Borgo Tossignano BO 16 3288 37078
Casola Valsenio RA 17 2617 39695
Casalfiumanese BO 19 3438 43133

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SW of Imola (69797 inhabitants)
34 Km S of Bologna (386663 inhabitants)
38 Km W of Faenza (58541 inhabitants)
44 Km NE of Prato (191150 inhabitants)
49 Km N of Firenze (382808 inhabitants)
50 Km W of Forlì (117913 inhabitants)
50 Km NE of Pistoia (90315 inhabitants)
53 Km NE of Scandicci (50609 inhabitants)
63 Km SE of Modena (184973 inhabitants)
66 Km W of Cesena (96758 inhabitants)
67 Km W of Ravenna (159116 inhabitants)
73 Km S of Ferrara (133155 inhabitants)
78 Km SE of Carpi (70699 inhabitants)
83 Km E of Lucca (89046 inhabitants)
84 Km SE of Reggio nell'Emilia (171345 inhabitants)
89 Km NW of Arezzo (99543 inhabitants)
93 Km W of Rimini (147750 inhabitants)
98 Km NE of Pisa (89158 inhabitants)
98 Km N of Siena (53903 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
Bulletin
Rev1000 		Md 2.2
ML 2.0 		2011-11-02
19:31:32		 44.199 11.42 27 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1304289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-11-02 19:31:32 ± 0.18
Latitude 44.1990 ± 0.0090
Longitude 11.4200 ± 0.0138
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1304289

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1142
Semi-minor axis of confidence ellipse (meter) 441
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 1486.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.54
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.17631
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1304289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:52:31

Md:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1304289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:52:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHE. 2011-11-02T19:32:14.56 10.0 undecidable manual Sg 0 0 0
IV.MAGA.HHN. 2011-11-02T19:32:04.09 10.0 undecidable manual Pg 0 0 0
GU.SC2M.HHE. 2011-11-02T19:32:00.20 10.0 undecidable manual Pg 0 0 0
IV.ROVR.HHN. 2011-11-02T19:32:00.88 10.0 undecidable manual Pg 0 0 0
IV.ATCC.EHZ. 2011-11-02T19:31:59.24 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHE. 2011-11-02T19:31:58.34 10.0 undecidable manual Pg 0 0 0
IV.FRON.EHE. 2011-11-02T19:31:57.52 10.0 undecidable manual Pg 0 0 0
IV.SSFR.HHE. 2011-11-02T19:31:57.97 10.0 undecidable manual Pg 0 0 0
IV.BADI.EHE. 2011-11-02T19:31:56.52 10.0 undecidable manual Sg 0 0 0
IV.ATVO.HHN. 2011-11-02T19:31:56.47 10.0 undecidable manual Pg 0 0 0
IV.FSSB.HHN. 2011-11-02T19:31:56.09 10.0 undecidable manual Pg 0 0 0
IV.FROS.HHN. 2011-11-02T19:31:54.84 10.0 undecidable manual Pg 0 0 0
IV.ATPC.HHZ. 2011-11-02T19:31:54.25 10.0 undecidable manual Pg 0 0 0
IV.TEOL.HHZ. 2011-11-02T19:31:53.59 0.3 undecidable manual Pg 9 130.5693 -0.691 52
IV.BADI.EHE. 2011-11-02T19:31:53.16 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2011-11-02T19:31:52.15 0.3 undecidable manual Pg 129 115.5954 -0.177 63
IV.ASQU.HHZ. 2011-11-02T19:31:51.50 0.6 undecidable manual Sg 146 53.4021 1.052 35
IV.CRMI.HHZ. 2011-11-02T19:31:51.93 0.6 undecidable manual Sg 219 57.8976 0.374 45
IV.ATMC.EHZ. 2011-11-02T19:31:50.89 0.3 undecidable manual Pg 143 103.8183 0.351 63
IV.FIR.HHN. 2011-11-02T19:31:50.47 10.0 undecidable manual Pg 0 0 0
IV.SFI.EHN. 2011-11-02T19:31:49.20 0.6 undecidable manual Sg 134 47.1195 0.312 47
IV.PARC.HHN. 2011-11-02T19:31:48.38 0.3 undecidable manual Pg 133 89.4438 0.02 69
IV.CPGN.EHZ. 2011-11-02T19:31:48.21 0.6 undecidable manual Pg 121 84.249 0.622 40
IV.CSNT.HHZ. 2011-11-02T19:31:47.34 0.3 undecidable manual Pg 187 81.1521 0.224 67
IV.BDI.HHE. 2011-11-02T19:31:45.87 0.3 undecidable manual Pg 257 67.2771 0.814 57
IV.VMG.SHZ. 2011-11-02T19:31:44.40 0.6 undecidable manual Sg 159 28.0497 -0.143 50
IV.CRMI.HHZ. 2011-11-02T19:31:43.77 0.3 undecidable manual Pg 219 57.8976 0.103 72
IV.FNVD.HHZ. 2011-11-02T19:31:43.55 0.3 undecidable manual Sg 262 23.9538 -0.17 76
IV.ZCCA.HHE. 2011-11-02T19:31:42.16 0.3 undecidable manual Pg 296 39.1275 1.127 52
IV.MTRZ.HHN. 2011-11-02T19:31:42.62 0.3 undecidable manual Sg 2 12.6762 0.702 66
IV.SEI.SHE. 2011-11-02T19:31:42.25 0.3 undecidable manual Sg 197 16.7721 -0.229 76
IV.ASQU.HHZ. 2011-11-02T19:31:42.86 0.1 undecidable manual Pg 146 53.4021 -0.171 95
IV.SFI.EHN. 2011-11-02T19:31:41.86 0.1 undecidable manual Pg 134 47.1195 -0.273 94
IV.PTF.SHE. 2011-11-02T19:31:40.87 0.3 undecidable manual Pg 227 38.5281 -0.081 75
IV.VMG.SHZ. 2011-11-02T19:31:39.36 0.1 positive manual Pg 159 28.0497 -0.262 98
IV.IMOL.EHZ. 2011-11-02T19:31:39.95 0.3 undecidable manual Pg 55 31.1466 -0.049 76
IV.SEI.SHE. 2011-11-02T19:31:38.04 0.1 undecidable manual Pg 197 16.7721 -0.391 97
IV.FNVD.HHZ. 2011-11-02T19:31:38.45 0.1 undecidable manual Pg 262 23.9538 -0.692 87
IV.MTRZ.HHN. 2011-11-02T19:31:37.83 0.1 positive manual Pg 2 12.6762 -0.277 100
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