Earthquake with magnitude of ML 2.1 on date 31-03-2006 and time 13:12:14 (UTC) in region 1 km E Castelnuovo di Val di Cecina (PI)

A magnitude ML 2.1 earthquake occured in region: 1 km E Castelnuovo di Val di Cecina (PI), on

  • 31-03-2006 13:12:14 (UTC)
  • 31-03-2006 15:12:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2050, 10.9250 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
Castelnuovo di Val di Cecina PI 2 2231 2231
Monterotondo Marittimo GR 9 1371 3602
Montieri GR 11 1204 4806
Pomarance PI 11 5897 10703
Radicondoli SI 11 914 11617
Chiusdino SI 14 1903 13520
Monteverdi Marittimo PI 17 758 14278
Massa Marittima GR 17 8375 22653
Casole d'Elsa SI 18 3897 26550

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Siena (53903 inhabitants)
52 Km NW of Grosseto (82087 inhabitants)
63 Km SE of Livorno (159219 inhabitants)
65 Km SW of Scandicci (50609 inhabitants)
68 Km SW of Firenze (382808 inhabitants)
71 Km SE of Pisa (89158 inhabitants)
77 Km S of Prato (191150 inhabitants)
79 Km SE of Lucca (89046 inhabitants)
81 Km S of Pistoia (90315 inhabitants)
83 Km W of Arezzo (99543 inhabitants)
92 Km SE of Viareggio (62467 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 2.3
ML 2.1
2006-03-31
13:12:14
43.205 10.925 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 559589
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-03-31 13:12:14 ± 0.27
Latitude 43.2050 ± 0.0135
Longitude 10.9250 ± 0.0271
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 559589

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2144
Semi-minor axis of confidence ellipse (meter) 1640
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 153
Circular confidence region, given by single value of horizontal uncertainty (meter) 2662.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.81
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.97307
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 559589
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:45:37

Md:2.3

Field Value
Value 2.3
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 559589
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:45:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VMG.SHZ. 2006-03-31T13:12:43.51 0.1 undecidable manual Sg 30 97.5246 0.438 40
IV.ZCCA.SHZ. 2006-03-31T13:12:37.77 10.0 undecidable manual Pg 0 0 0
IV.PII.SHZ. 2006-03-31T13:12:33.99 0.3 undecidable manual Sg 331 65.7897 -0.607 30
IV.FNVD.HHZ. 2006-03-31T13:12:33.65 0.1 undecidable manual Pg 8 108.0141 1.164 58
IV.ARCI.HHZ. 2006-03-31T13:12:32.37 0.1 undecidable manual Sg 131 59.3961 -0.501 43
IV.SFI.SHZ. 2006-03-31T13:12:32.43 0.1 undecidable manual Pg 43 107.3148 0.049 86
IV.SEI.SHZ. 2006-03-31T13:12:31.48 0.1 undecidable manual Pg 20 100.4217 0.159 85
IV.PZZT.HHN. 2006-03-31T13:12:31.77 0.1 undecidable manual Pg 357 102.9192 0.07 86
IV.VMG.SHZ. 2006-03-31T13:12:31.22 0.1 undecidable manual Pg 30 97.5246 0.342 82
IV.CRE.EHZ. 2006-03-31T13:12:30.88 0.1 undecidable manual Pg 61 94.6386 0.458 81
IV.BDI.HHZ. 2006-03-31T13:12:30.81 0.1 undecidable manual Pg 345 98.7234 -0.246 84
IV.MAON.HHZ. 2006-03-31T13:12:29.47 0.1 positive manual Pg 169 87.7455 0.104 88
IV.CSNT.BHZ. 2006-03-31T13:12:26.21 0.1 undecidable manual Sg 45 41.8248 -1.993 19
IV.ARCI.HHZ. 2006-03-31T13:12:25.34 0.1 undecidable manual Pg 131 59.3961 0.353 88
IV.PII.SHZ. 2006-03-31T13:12:25.75 0.1 undecidable manual Pg 331 65.7897 -0.232 90
IV.CSSN.SHZ. 2006-03-31T13:12:25.30 10.0 undecidable manual Pg 0 0 0
IV.CSNT.BHZ. 2006-03-31T13:12:21.25 0.1 positive manual Pg 45 41.8248 -1.042 70
IV.GRFL.SHZ. 2006-03-31T13:12:16.44 0.1 positive manual Pg 148 7.5813 -0.201 100
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