Earthquake with magnitude of Md 2.1 on date 12-01-2003 and time 17:50:41 (UTC) in region 11 km NE Villa Collemandina (LU)

A magnitude Md 2.1 earthquake occured in region: 11 km NE Villa Collemandina (LU), on

  • 12-01-2003 17:50:41 (UTC)
  • 12-01-2003 18:50:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2560, 10.4430 at 6 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
Villa Collemandina LU 11 1334 1334
Frassinoro MO 11 1926 3260
Sillano Giuncugnano LU 12 1085 4345
Castiglione di Garfagnana LU 12 1818 6163
San Romano in Garfagnana LU 12 1410 7573
Villa Minozzo RE 12 3750 11323
Camporgiano LU 14 2176 13499
Piazza al Serchio LU 14 2367 15866
Pieve Fosciana LU 14 2414 18280
Pievepelago MO 15 2222 20502
Fosciandora LU 16 602 21104
Ventasso RE 16 4295 25399
Castelnuovo di Garfagnana LU 16 5950 31349
Toano RE 16 4463 35812
Riolunato MO 17 712 36524
Careggine LU 18 564 37088
Palagano MO 18 2194 39282
Fiumalbo MO 18 1280 40562
Montefiorino MO 19 2203 42765

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NE of Carrara (63133 inhabitants)
34 Km NE of Massa (69479 inhabitants)
46 Km NE of Viareggio (62467 inhabitants)
46 Km N of Lucca (89046 inhabitants)
51 Km SW of Reggio nell'Emilia (171345 inhabitants)
52 Km E of La Spezia (93959 inhabitants)
52 Km NW of Pistoia (90315 inhabitants)
58 Km SW of Modena (184973 inhabitants)
60 Km N of Pisa (89158 inhabitants)
61 Km S of Parma (192836 inhabitants)
67 Km NW of Prato (191150 inhabitants)
68 Km SW of Carpi (70699 inhabitants)
76 Km W of Bologna (386663 inhabitants)
79 Km N of Livorno (159219 inhabitants)
81 Km NW of Scandicci (50609 inhabitants)
85 Km NW of Firenze (382808 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 1.8
2003-01-12
17:50:41
44.256 10.443 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 466239
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2003-01-12 17:50:41 ± 0.328
Latitude 44.2560 ± 0.0095
Longitude 10.4430 ± 0.0295
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 466239

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) 2576.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00478
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 466239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:21:56

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 466239
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. 2003-01-12T17:51:02.78 10.0 undecidable manual SG 173 0.5328 1.02 0
--.ZCCA.Z. 2003-01-12T17:50:57.66 10.0 undecidable manual SG 75 0.3885 0.51 0.2
--.PII.Z. 2003-01-12T17:50:52.80 10.0 undecidable manual PG 173 0.5328 -0.55 0.3
--.BDI.Z. 2003-01-12T17:50:51.43 10.0 undecidable manual SG 150 0.2109 0.68 0.1
--.ZCCA.Z. 2003-01-12T17:50:50.54 10.0 positive manual PG 75 0.3885 -0.16 2.2
--.ERBM.Z. 2003-01-12T17:50:48.36 10.0 undecidable manual SG 352 0.1665 -0.23 0.5
--.GSCL.Z. 2003-01-12T17:50:47.59 10.0 undecidable manual SG 47 0.1332 -0.13 0.5
--.BDI.Z. 2003-01-12T17:50:46.84 10.0 positive manual PG 150 0.2109 -0.16 2.6
--.ERBM.Z. 2003-01-12T17:50:46.23 10.0 undecidable manual PG 352 0.1665 0.48 0.6
--.GSCL.Z. 2003-01-12T17:50:45.24 10.0 negative manual PG 47 0.1332 -0.02 2.9
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