Earthquake with magnitude of Md 2.1 on date 12-07-2003 and time 13:10:52 (Italy) in region 4 km NE Santa Sofia (FC)

A magnitude Md 2.1 earthquake occured in region: 4 km NE Santa Sofia (FC), on

  • 12-07-2003 11:10:52 (UTC)
  • 12-07-2003 13:10:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9690, 11.9550 at 9 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
Santa Sofia FC 4 4136 4136
Civitella di Romagna FC 5 3786 7922
Galeata FC 5 2516 10438
Bagno di Romagna FC 12 6026 16464
Rocca San Casciano FC 14 1910 18374
Premilcuore FC 14 799 19173
Predappio FC 15 6346 25519
Portico e San Benedetto FC 15 756 26275
Sarsina FC 16 3446 29721
Dovadola FC 18 1653 31374
Mercato Saraceno FC 19 6886 38260
Verghereto FC 20 1907 40167
Meldola FC 20 9970 50137

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km S of Forlì (117913 inhabitants)
30 Km SW of Cesena (96758 inhabitants)
36 Km S of Faenza (58541 inhabitants)
47 Km SE of Imola (69797 inhabitants)
50 Km W of Rimini (147750 inhabitants)
54 Km SW of Ravenna (159116 inhabitants)
56 Km N of Arezzo (99543 inhabitants)
60 Km E of Firenze (382808 inhabitants)
66 Km E of Scandicci (50609 inhabitants)
69 Km E of Prato (191150 inhabitants)
76 Km SE of Bologna (386663 inhabitants)
77 Km W of Pesaro (94582 inhabitants)
83 Km E of Pistoia (90315 inhabitants)
87 Km W of Fano (60888 inhabitants)
88 Km NE of Siena (53903 inhabitants)
100 Km S of Ferrara (133155 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 2.1
ML-VAX 2.1
2003-07-12
11:10:52
43.969 11.955 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 480779
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2003-07-12 11:10:52 ± 0.497
Latitude 43.9690 ± 0.0206
Longitude 11.9550 ± 0.0309
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 480779

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) 3369.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 259
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.00947
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 480779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:38:04

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 480779
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(km) Takeoff_angle Residual Weight
--.PII.Z. 2003-07-12T11:11:14.20 10.0 undecidable manual PN? 256 1.0545 0.7 0
--.SEI.Z. 2003-07-12T11:11:09.40 10.0 undecidable manual SG 281 0.4329 0.19 0.5
--.CRE.Z. 2003-07-12T11:11:05.84 10.0 undecidable manual SG 180 0.3441 -0.2 0.5
--.SEI.Z. 2003-07-12T11:11:01.67 10.0 undecidable manual PG 281 0.4329 -0.37 0.6
--.CRE.Z. 2003-07-12T11:11:00.44 10.0 undecidable manual PG 180 0.3441 0.02 1.6
--.SFI.E. 2003-07-12T11:10:57.66 10.0 undecidable manual SG 229 0.0999 -0.1 0.6
--.SFI.Z. 2003-07-12T11:10:55.70 10.0 positive manual PG 229 0.0999 0.05 3.2
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