Earthquake with magnitude of Md 2.5 on date 23-03-2005 and time 14:20:44 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude Md 2.5 earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 23-03-2005 13:20:44 (UTC)
  • 23-03-2005 14:20:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9690, 10.0880 at 10 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
Forte dei Marmi LU 6 7510 7510
Massa MS 9 69479 76989
Montignoso MS 9 10323 87312
Pietrasanta LU 11 24007 111319
Seravezza LU 12 13073 124392
Carrara MS 12 63133 187525
Ortonovo SP 14 8277 195802
Ameglia SP 15 4365 200167
Castelnuovo Magra SP 16 8415 208582
Stazzema LU 17 3193 211775
Viareggio LU 17 62467 274242
Camaiore LU 18 32513 306755
Lerici SP 19 10228 316983
Sarzana SP 19 21976 338959
Fosdinovo MS 19 4883 343842

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km SW of Massa (69479 inhabitants)
12 Km S of Carrara (63133 inhabitants)
17 Km NW of Viareggio (62467 inhabitants)
26 Km SE of La Spezia (93959 inhabitants)
36 Km W of Lucca (89046 inhabitants)
38 Km NW of Pisa (89158 inhabitants)
50 Km NW of Livorno (159219 inhabitants)
67 Km W of Pistoia (90315 inhabitants)
82 Km W of Prato (191150 inhabitants)
91 Km W of Scandicci (50609 inhabitants)
92 Km SW of Reggio nell'Emilia (171345 inhabitants)
95 Km S of Parma (192836 inhabitants)
96 Km W 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 2.5 2005-03-23
13:20:44
43.969 10.088 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 513049
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2005-03-23 13:20:44 ± 0.84
Latitude 43.9690 ± 0.0160
Longitude 10.0880 ± 0.0243
Depth (km) 10 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 513049

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) 2635.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 202
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00340
Epicentral distance of station farthest from the epicenter (degree) 0.01141
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 513049
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 01:12:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SFI.Z. 2005-03-23T13:21:08.64 10.0 undecidable manual PN 92 1.2654 0.23 1
--.PGD.Z. 2005-03-23T13:21:07.21 10.0 undecidable manual PN 94 1.1766 0.02 1.1
--.BOB.Z. 2005-03-23T13:21:03.40 10.0 undecidable manual PG 330 0.9213 -0.04 1.3
--.FNVD.Z. 2005-03-23T13:21:01.23 10.0 undecidable manual PG 75 0.7659 0.93 0.1
--.BDI.Z. 2005-03-23T13:20:58.45 10.0 undecidable manual SG 75 0.3774 -0.55 0.1
--.GSCL.Z. 2005-03-23T13:20:55.87 10.0 undecidable manual PG 43 0.5217 0.13 1.6
--.ERBM.Z. 2005-03-23T13:20:55.29 10.0 undecidable manual PG 27 0.4995 -0.14 1.3
--.PII.Z. 2005-03-23T13:20:53.33 10.0 undecidable manual PG 128 0.3996 -0.13 1.2
--.BDI.Z. 2005-03-23T13:20:52.89 10.0 undecidable manual PG 75 0.3774 -0.15 1.2
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