Earthquake with magnitude of Md 2.2 on date 18-10-2003 and time 19:04:35 (Italy) in region 5 km W Castel del Rio (BO)

A magnitude Md 2.2 earthquake occured in region: 5 km W Castel del Rio (BO), on

  • 18-10-2003 17:04:35 (UTC)
  • 18-10-2003 19:04:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.23, 11.44 at 2 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
Castel del Rio BO 5 1246 1246
Fontanelice BO 10 1943 3189
Monghidoro BO 10 3749 6938
Loiano BO 11 4294 11232
Monterenzio BO 12 6035 17267
Borgo Tossignano BO 13 3288 20555
Firenzuola FI 13 4726 25281
Casola Valsenio RA 14 2617 27898
Monzuno BO 15 6328 34226
Palazzuolo sul Senio FI 15 1154 35380
Casalfiumanese BO 16 3438 38818
San Benedetto Val di Sambro BO 17 4315 43133
Pianoro BO 19 17460 60593

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SW of Imola (69797 inhabitants)
31 Km S of Bologna (386663 inhabitants)
36 Km W of Faenza (58541 inhabitants)
47 Km NE of Prato (191150 inhabitants)
48 Km W of Forlì (117913 inhabitants)
53 Km N of Firenze (382808 inhabitants)
53 Km NE of Pistoia (90315 inhabitants)
56 Km NE of Scandicci (50609 inhabitants)
62 Km SE of Modena (184973 inhabitants)
64 Km W of Ravenna (159116 inhabitants)
64 Km W of Cesena (96758 inhabitants)
69 Km S of Ferrara (133155 inhabitants)
76 Km SE of Carpi (70699 inhabitants)
83 Km SE of Reggio nell'Emilia (171345 inhabitants)
87 Km E of Lucca (89046 inhabitants)
91 Km W of Rimini (147750 inhabitants)
92 Km NW of Arezzo (99543 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
Rev 1000 Md 2.2
ML-VAX 1.9
2003-10-18
17:04:35
44.23 11.45 2 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 487809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2003-10-18 17:04:35 ± 0.209
Latitude 44.23 ± 0.01
Longitude 11.45 ± 0.01
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 487809

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1867
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01166
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 487809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:45:19

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 8
Type of magnitude ML
Reference to an origin 487809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 2003-10-18T17:05:00.78 10.0 undecidable manual PN 123 0.0117 0.61 0.2
--.FSSB.Z. 2003-10-18T17:04:57.26 10.0 undecidable manual PG 118 0.0099 -0.07 1.1
--.SFI.E. 2003-10-18T17:04:51.91 10.0 undecidable manual SG 137 0.0039 0.16 0.6
--.RSM.Z. 2003-10-18T17:04:51.60 10.0 undecidable manual PG 112 0.007 0.13 1.3
--.CSNT.Z. 2003-10-18T17:04:50.72 10.0 undecidable manual PG 188 0.0068 -0.4 0.7
--.CRE.Z. 2003-10-18T17:04:49.93 10.0 undecidable manual PG 148 0.0063 -0.18 1.3
--.BDI.Z. 2003-10-18T17:04:48.42 10.0 undecidable manual PG 255 0.0057 -0.24 1.3
--.SFI.Z. 2003-10-18T17:04:44.14 10.0 undecidable manual PG 137 0.0039 -0.54 0.5
--.PGD.Z. 2003-10-18T17:04:43.87 10.0 undecidable manual PG 150 0.0036 -0.15 1.5
--.ZCCA.Z. 2003-10-18T17:04:42.97 10.0 undecidable manual PG 290 0.0032 -0.01 1.6
--.VMG.Z. 2003-10-18T17:04:41.30 10.0 undecidable manual PG 164 0.0024 0.14 1.5
--.SEI.Z. 2003-10-18T17:04:39.77 10.0 undecidable manual PG 199 0.0016 0.63 0.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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