Earthquake with magnitude of ML 2.3 on date 25-04-2006 and time 05:16:21 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude ML 2.3 earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 25-04-2006 03:16:21 (UTC)
  • 25-04-2006 05:16:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6560, 10.1960 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
Livorno LI 15 159219 159219
Pisa PI 18 89158 248377

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NW of Livorno (159219 inhabitants)
18 Km W of Pisa (89158 inhabitants)
24 Km S of Viareggio (62467 inhabitants)
32 Km SW of Lucca (89046 inhabitants)
43 Km S of Massa (69479 inhabitants)
48 Km S of Carrara (63133 inhabitants)
58 Km SE of La Spezia (93959 inhabitants)
66 Km W of Pistoia (90315 inhabitants)
77 Km W of Prato (191150 inhabitants)
80 Km W of Scandicci (50609 inhabitants)
86 Km W of Firenze (382808 inhabitants)
99 Km W of Siena (53903 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 2.6
ML 2.3
2006-04-25
03:16:21
43.656 10.196 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 564019
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-04-25 03:16:21 ± 0.16
Latitude 43.6560 ± 0.0126
Longitude 10.1960 ± 0.0199
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 564019

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1895
Semi-minor axis of confidence ellipse (meter) 947
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 2126.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.01893
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 564019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:50:14

Md:2.6

Field Value
Value 2.6
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 564019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:50:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CTI.EHN. 2006-04-25T03:17:36.93 10.0 undecidable manual Sg 0 0 0
IV.CTI.EHN. 2006-04-25T03:17:05.28 10.0 undecidable manual Pg 0 0 0
IV.BOB.HHN. 2006-04-25T03:17:01.90 10.0 undecidable manual Pg 0 0 0
IV.FNVD.HHZ. 2006-04-25T03:16:50.31 10.0 undecidable manual Sg 0 0 0
IV.SFI.SHZ. 2006-04-25T03:16:44.06 10.0 undecidable manual Pg 0 0 0
IV.ZCCA.SHZ. 2006-04-25T03:16:40.47 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2006-04-25T03:16:40.97 0.1 undecidable manual Pg 72 113.0979 0.384 80
IV.SEI.SHZ. 2006-04-25T03:16:39.22 0.1 undecidable manual Pg 64 102.9192 0.198 85
MN.VLC.HHN. 2006-04-25T03:16:39.47 0.1 undecidable manual Sg 15 57.7977 -0.264 46
IV.FNVD.HHZ. 2006-04-25T03:16:38.16 10.0 undecidable manual Pg 0 0 0
IV.BDI.HHZ. 2006-04-25T03:16:38.54 0.1 undecidable manual Sg 35 55.3002 -0.52 44
IV.ERBM.SHZ. 2006-04-25T03:16:37.34 0.1 undecidable manual Pg 11 86.4468 0.863 71
IV.GSCL.SHZ. 2006-04-25T03:16:36.37 0.1 undecidable manual Pg 22 83.1501 0.4 85
IV.GRFL.SHZ. 2006-04-25T03:16:36.22 10.0 undecidable manual Pg 0 0 0
IV.CSNT.SHZ. 2006-04-25T03:16:36.97 0.1 undecidable manual Pg 103 90.243 -0.098 89
IV.PZZT.HHN. 2006-04-25T03:16:34.50 0.1 undecidable manual Pg 45 74.8695 -0.2 90
IV.GROG.HHZ. 2006-04-25T03:16:33.58 0.1 undecidable manual Sg 224 35.3424 -0.16 49
IV.BDI.HHZ. 2006-04-25T03:16:31.13 0.1 undecidable manual Pg 35 55.3002 -0.552 86
MN.VLC.HHN. 2006-04-25T03:16:31.84 0.1 undecidable manual Pg 15 57.7977 -0.231 93
IV.GROG.HHZ. 2006-04-25T03:16:28.56 0.1 undecidable manual Pg 224 35.3424 -0.05 100
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