Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 08-10-2009 and time 09:49:07 (UTC) in region 5 km SW Brisighella (RA)

A magnitude ML 2.0 earthquake occured in region: 5 km SW Brisighella (RA), on

  • 08-10-2009 09:49:07 (UTC)
  • 08-10-2009 11:49:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1900, 11.7210 at 38 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
Brisighella RA 5 7639 7639
Modigliana FC 7 4560 12199
Casola Valsenio RA 9 2617 14816
Riolo Terme RA 10 5720 20536
Tredozio FC 12 1212 21748
Borgo Tossignano BO 14 3288 25036
Casalfiumanese BO 15 3438 28474
Fontanelice BO 15 1943 30417
Dovadola FC 15 1653 32070
Marradi FI 15 3139 35209
Castel Bolognese RA 16 9554 44763
Palazzuolo sul Senio FI 16 1154 45917
Faenza RA 17 58541 104458
Rocca San Casciano FC 17 1910 106368
Castel del Rio BO 17 1246 107614
Imola BO 18 69797 177411
Castrocaro Terme e Terra del Sole FC 18 6426 183837
Portico e San Benedetto FC 19 756 184593

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SW of Faenza (58541 inhabitants)
18 Km S of Imola (69797 inhabitants)
26 Km W of Forlì (117913 inhabitants)
42 Km W of Cesena (96758 inhabitants)
45 Km SE of Bologna (386663 inhabitants)
46 Km SW of Ravenna (159116 inhabitants)
60 Km NE of Firenze (382808 inhabitants)
61 Km NE of Prato (191150 inhabitants)
64 Km NE of Scandicci (50609 inhabitants)
69 Km W of Rimini (147750 inhabitants)
70 Km E of Pistoia (90315 inhabitants)
72 Km S of Ferrara (133155 inhabitants)
81 Km SE of Modena (184973 inhabitants)
81 Km N of Arezzo (99543 inhabitants)
94 Km SE of Carpi (70699 inhabitants)
98 Km S of Rovigo (51867 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 2.0
ML 2.0 		2009-10-08
09:49:07		 44.19 11.721 38 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 976199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-10-08 09:49:07 ± 0.4
Latitude 44.1900 ± 0.0207
Longitude 11.7210 ± 0.0351
Depth (km) 38 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 976199

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2476
Semi-minor axis of confidence ellipse (meter) 2227
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 3623.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 222
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.52
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42898
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 976199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:40:09

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 976199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:40:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASQU.HHN. 2009-10-08T09:49:24.62 0.3 undecidable manual Sg 173 44.0226 0.489 68
IV.FNVD.HHE. 2009-10-08T09:49:24.89 0.6 undecidable manual Sg 267 47.619 -0.011 45
IV.SEI.SHZ. 2009-10-08T09:49:22.25 0.3 undecidable manual Sg 243 32.5452 0.379 67
IV.SFI.EHZ. 2009-10-08T09:49:22.09 0.1 undecidable manual Sg 162 33.2445 0.093 94
IV.MTRZ.HHZ. 2009-10-08T09:49:21.49 1.0 undecidable manual Sg 300 27.1506 0.55 24
IV.FAEN.HHZ. 2009-10-08T09:49:20.45 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2009-10-08T09:49:20.40 0.3 undecidable manual Sg 209 29.0487 -0.848 59
IV.ASQU.HHN. 2009-10-08T09:49:17.70 0.3 undecidable manual Pg 173 44.0226 0.643 66
IV.FNVD.HHE. 2009-10-08T09:49:17.73 0.3 undecidable manual Pg 267 47.619 0.23 67
IV.ORI.HHZ. 2009-10-08T09:49:16.19 10.0 undecidable manual Pg 0 0 0
IV.SFI.EHZ. 2009-10-08T09:49:16.07 0.1 undecidable manual Pg 162 33.2445 0.246 100
IV.MTRZ.HHZ. 2009-10-08T09:49:15.03 0.3 undecidable manual Pg 300 27.1506 -0.182 71
IV.VMG.SHZ. 2009-10-08T09:49:15.27 0.1 undecidable manual Pg 209 29.0487 -0.121 98
IV.SEI.SHZ. 2009-10-08T09:49:15.33 0.3 undecidable manual Pg 243 32.5452 -0.423 71
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