Earthquake with magnitude of Md 2.2 on date 21-02-2002 and time 16:54:36 (Italy) in region 5 km E Verghereto (FC)

A magnitude Md 2.2 earthquake occured in region: 5 km E Verghereto (FC), on

  • 21-02-2002 15:54:36 (UTC)
  • 21-02-2002 16:54:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7920, 12.0700 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
Verghereto FC 5 1907 1907
Casteldelci RN 7 407 2314
Bagno di Romagna FC 11 6026 8340
Badia Tedalda AR 13 1087 9427
Pieve Santo Stefano AR 14 3183 12610
Sant'Agata Feltria RN 14 2151 14761
Chiusi della Verna AR 15 2023 16784
Sarsina FC 15 3446 20230
Pennabilli RN 16 2869 23099
Caprese Michelangelo AR 18 1426 24525

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NE of Arezzo (99543 inhabitants)
41 Km SW of Cesena (96758 inhabitants)
48 Km S of Forlì (117913 inhabitants)
50 Km SW of Rimini (147750 inhabitants)
57 Km S of Faenza (58541 inhabitants)
65 Km E of Firenze (382808 inhabitants)
69 Km SE of Imola (69797 inhabitants)
69 Km W of Pesaro (94582 inhabitants)
70 Km S of Ravenna (159116 inhabitants)
71 Km E of Scandicci (50609 inhabitants)
77 Km W of Fano (60888 inhabitants)
79 Km E of Prato (191150 inhabitants)
79 Km NE of Siena (53903 inhabitants)
80 Km NW of Perugia (166134 inhabitants)
94 Km E of Pistoia (90315 inhabitants)
97 Km SE of Bologna (386663 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-VAX 1.5
2002-02-21
15:54:36
43.792 12.07 2 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 436629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-02-21 15:54:36 ± 0.391
Latitude 43.7920 ± 0.0101
Longitude 12.0700 ± 0.0261
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 436629

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) 2381.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 261
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00170
Epicentral distance of station farthest from the epicenter (degree) 0.00583
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 436629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:52:31

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 436629
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
--.CSNT.Z. 2002-02-21T15:54:50.81 10.0 undecidable manual PG 240 0.6438 -0.04 1.1
--.PGD.Z. 2002-02-21T15:54:47.23 10.0 undecidable manual SG 288 0.2553 0.12 0.6
--.SFI.Z. 2002-02-21T15:54:44.18 10.0 undecidable manual SG 304 0.1887 -0.27 0.4
--.CRE.Z. 2002-02-21T15:54:44.60 10.0 undecidable manual SG 206 0.1887 -0.3 0.3
--.PGD.Z. 2002-02-21T15:54:43.22 10.0 undecidable manual PG 288 0.2553 0.43 0.3
--.CRE.Z. 2002-02-21T15:54:41.25 10.0 positive manual PG 206 0.1887 0.05 3.5
--.SFI.Z. 2002-02-21T15:54:40.96 10.0 undecidable manual PG 304 0.1887 -0.29 0.8
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