Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 09-10-2012 and time 21:33:05 (Italy) in region 1 km NE Fontanelice (BO)

A magnitude ML 1.8 earthquake occured in region: 1 km NE Fontanelice (BO), on

  • 09-10-2012 19:33:05 (UTC)
  • 09-10-2012 21:33:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2650, 11.5720 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
Fontanelice BO 1 1943 1943
Borgo Tossignano BO 2 3288 5231
Casalfiumanese BO 5 3438 8669
Casola Valsenio RA 6 2617 11286
Castel del Rio BO 8 1246 12532
Dozza BO 12 6652 19184
Riolo Terme RA 12 5720 24904
Castel San Pietro Terme BO 15 20811 45715
Monterenzio BO 15 6035 51750
Imola BO 15 69797 121547
Brisighella RA 17 7639 129186
Palazzuolo sul Senio FI 17 1154 130340
Castel Bolognese RA 19 9554 139894
Loiano BO 20 4294 144188

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SW of Imola (69797 inhabitants)
25 Km W of Faenza (58541 inhabitants)
31 Km SE of Bologna (386663 inhabitants)
38 Km W of Forlì (117913 inhabitants)
53 Km W of Ravenna (159116 inhabitants)
55 Km W of Cesena (96758 inhabitants)
57 Km NE of Prato (191150 inhabitants)
61 Km NE of Firenze (382808 inhabitants)
64 Km S of Ferrara (133155 inhabitants)
64 Km NE of Pistoia (90315 inhabitants)
64 Km NE of Scandicci (50609 inhabitants)
67 Km SE of Modena (184973 inhabitants)
79 Km SE of Carpi (70699 inhabitants)
83 Km W of Rimini (147750 inhabitants)
89 Km SE of Reggio nell'Emilia (171345 inhabitants)
91 Km S of Rovigo (51867 inhabitants)
92 Km N of Arezzo (99543 inhabitants)
97 Km E of Lucca (89046 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 1.5 2012-10-09
19:33:04		 44.2672 11.5657 31 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2331471
Bulletin
Rev1000 		ML 1.8 2012-10-09
19:33:05		 44.2653 11.5722 27 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 2782961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-10-09 19:33:05 ± 0.29
Latitude 44.2653 ± 0.0135
Longitude 11.5722 ± 0.0100
Depth (km) 27 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 2782961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1281
Semi-minor axis of confidence ellipse (meter) 877
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 5
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.11601
Epicentral distance of station farthest from the epicenter (degree) 0.70147
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 2331471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-10-09 19:42:47

ML:1.8

Field Value
Value 1.8
Uncertainty 0.5
Num. used stations 6
Type of magnitude ML
Reference to an origin 2782961
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:42:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.POPM.HHZ. 2012-10-09T19:33:27.59 0.3 undecidable manual S 246 71.0733 105 0.38 63
IV.PTF.SHZ. 2012-10-09T19:33:22.31 0.3 undecidable manual S 230 52.4031 111 -0.16 69
IV.SFI.EHZ. 2012-10-09T19:33:20.60 0.3 undecidable manual S 151 45.621 114 -0.19 69
IV.CRE.HHZ. 2012-10-09T19:33:19.64 0.3 undecidable manual P 157 77.8665 104 0.71 56
IV.FNVD.HHZ. 2012-10-09T19:33:18.10 0.3 undecidable manual S 253 37.3293 120 -0.72 60
GU.POPM.HHZ. 2012-10-09T19:33:18.05 0.1 undecidable manual P 246 71.0733 105 0.13 89
IV.PTF.SHZ. 2012-10-09T19:33:15.07 0.1 undecidable manual P 230 52.4031 111 -0.11 92
IV.SFI.EHZ. 2012-10-09T19:33:14.10 0.1 undecidable manual P 151 45.621 114 -0.11 93
IV.IMOL.EHZ. 2012-10-09T19:33:14.68 0.3 undecidable manual S 52 17.0718 144 -0.06 74
IV.MTRZ.HHZ. 2012-10-09T19:33:14.57 0.3 undecidable manual S 294 12.876 152 0.44 69
IV.BRIS.HHZ. 2012-10-09T19:33:14.80 0.1 undecidable manual S 106 16.0728 146 0.21 97
IV.FNVD.HHZ. 2012-10-09T19:33:12.78 0.1 undecidable manual P 253 37.3293 120 -0.3 91
IV.MTRZ.HHZ. 2012-10-09T19:33:10.53 0.1 undecidable manual P 294 12.876 152 0.16 98
IV.BRIS.HHZ. 2012-10-09T19:33:10.61 0.1 undecidable manual P 106 16.0728 146 -0.02 100
IV.IMOL.EHZ. 2012-10-09T19:33:10.55 0.1 undecidable manual P 52 17.0718 144 -0.17 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HNN. ML:1.9 0.00042699999999999997 0.28 AML other m 2012-10-09T19:33:15.08
IV.BRIS.HNE. ML:2.2 0.0007725 0.12 AML other m 2012-10-09T19:33:14.91
IV.CRE.HHN. ML:1.3 0.0000283 0.82 AML other m 2012-10-09T19:33:38.26
IV.CRE.HHE. ML:1.3 0.000025099999999999997 1.46 AML other m 2012-10-09T19:33:40.11
IV.FNVD.HHN. ML:1.9 0.00023999999999999998 0.4 AML other m 2012-10-09T19:33:20.18
IV.FNVD.HHE. ML:1.8 0.000194 1.38 AML other m 2012-10-09T19:33:20.25
IV.IMOL.EHN. ML:0.8 0.000028750000000000004 0.6 AML other m 2012-10-09T19:33:25.08
IV.IMOL.EHE. ML:0.9 0.00003449999999999999 0.38 AML other m 2012-10-09T19:33:25.39
IV.MTRZ.HHN. ML:2.3 0.001135 0.72 AML other m 2012-10-09T19:33:16.11
IV.MTRZ.HHE. ML:2.5 0.001545 0.36 AML other m 2012-10-09T19:33:17.01
IV.MTRZ.HNN. ML:2.3 0.0010969999999999999 0.74 AML other m 2012-10-09T19:33:15.11
IV.MTRZ.HNE. ML:2.4 0.0014550000000000001 0.28 AML other m 2012-10-09T19:33:16.01
GU.POPM.HHN. ML:1.4 0.0000363 0.72 AML other m 2012-10-09T19:33:30.68
GU.POPM.HHE. ML:1.4 0.00003515 1.3 AML other m 2012-10-09T19:33:34.66
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