Earthquake with magnitude of Md 2.3 on date 13-02-2004 and time 18:12:57 (UTC) in region 8 km NE Monteverdi Marittimo (PI)

A magnitude Md 2.3 earthquake occured in region: 8 km NE Monteverdi Marittimo (PI), on

  • 13-02-2004 18:12:57 (UTC)
  • 13-02-2004 19:12:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2290, 10.7840 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
Monteverdi Marittimo PI 8 758 758
Castelnuovo di Val di Cecina PI 10 2231 2989
Pomarance PI 11 5897 8886
Monterotondo Marittimo GR 11 1371 10257
Guardistallo PI 15 1234 11491
Casale Marittimo PI 16 1122 12613
Bibbona LI 16 3175 15788
Sassetta LI 16 514 16302
Castagneto Carducci LI 16 9010 25312
Montescudaio PI 17 2144 27456
Montecatini Val di Cecina PI 19 1749 29205
Suvereto LI 19 3072 32277

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km W of Siena (53903 inhabitants)
53 Km SE of Livorno (159219 inhabitants)
59 Km NW of Grosseto (82087 inhabitants)
62 Km SE of Pisa (89158 inhabitants)
67 Km SW of Scandicci (50609 inhabitants)
71 Km SW of Firenze (382808 inhabitants)
72 Km SE of Lucca (89046 inhabitants)
77 Km SW of Prato (191150 inhabitants)
79 Km S of Pistoia (90315 inhabitants)
83 Km SE of Viareggio (62467 inhabitants)
93 Km W of Arezzo (99543 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 2004-02-13
18:12:57
43.229 10.784 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 493329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2004-02-13 18:12:57 ± 0.373
Latitude 43.2290 ± 0.0197
Longitude 10.7840 ± 0.0305
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 493329

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) 3301.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 218
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) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.00915
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 493329
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:51:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.VMG.Z. 2004-02-13T18:13:28.50 10.0 undecidable manual SG 36 0.9102 -0.49 0.3
--.SFI.Z. 2004-02-13T18:13:17.76 10.0 undecidable manual PG 48 1.0101 -0.01 1.4
--.VMG.Z. 2004-02-13T18:13:16.27 10.0 undecidable manual PG 36 0.9102 0.52 0.7
--.PGD.Z. 2004-02-13T18:13:16.35 10.0 undecidable manual PG 46 0.9324 0.2 1.4
--.PII.Z. 2004-02-13T18:13:15.40 10.0 undecidable manual SG 339 0.5217 -1.09 0
--.BDI.Z. 2004-02-13T18:13:14.45 10.0 undecidable manual PG 350 0.8325 0.03 1.6
--.PII.Z. 2004-02-13T18:13:08.73 10.0 undecidable manual PG 339 0.5217 0.18 1.7
--.GRFL.Z. 2004-02-13T18:13:04.00 10.0 undecidable manual SG 120 0.1665 -0.8 0.1
--.GRFL.Z. 2004-02-13T18:13:01.84 10.0 undecidable manual PG 120 0.1665 0.05 1.8
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