Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 04-10-2007 and time 04:08:56 (Italy) in region 3 km SE Montieri (GR)

A magnitude ML 1.8 earthquake occured in region: 3 km SE Montieri (GR), on

  • 04-10-2007 02:08:56 (UTC)
  • 04-10-2007 04:08:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1170, 11.0450 at 12 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Montieri GR 3 1204 1204
Chiusdino SI 6 1903 3107
Monticiano SI 11 1571 4678
Massa Marittima GR 15 8375 13053
Castelnuovo di Val di Cecina PI 15 2231 15284
Roccastrada GR 15 9199 24483
Monterotondo Marittimo GR 16 1371 25854
Radicondoli SI 16 914 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Siena (53903 inhabitants)
40 Km N of Grosseto (82087 inhabitants)
72 Km S of Scandicci (50609 inhabitants)
75 Km S of Firenze (382808 inhabitants)
77 Km SE of Livorno (159219 inhabitants)
78 Km SW of Arezzo (99543 inhabitants)
85 Km SE of Pisa (89158 inhabitants)
85 Km S of Prato (191150 inhabitants)
92 Km S of Pistoia (90315 inhabitants)
92 Km SE of Lucca (89046 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
ML 1.8 		2007-10-04
02:08:56		 43.117 11.045 12 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 655539
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2007-10-04 02:08:56 ± 0.14
Latitude 43.1170 ± 0.0054
Longitude 11.0450 ± 0.0086
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 655539

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 709
Semi-minor axis of confidence ellipse (meter) 223
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 45
Circular confidence region, given by single value of horizontal uncertainty (meter) 922.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.54953
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 655539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 12:27:08

Md:2.5

Field Value
Value 2.5
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 655539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 12:27:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CDCA.SHE. 2007-10-04T02:09:29.54 10.0 undecidable manual Sg 0 0 0
IV.SFI.SHZ. 2007-10-04T02:09:27.30 0.1 undecidable manual Sg 36 108.6135 -0.256 84
IV.BDI.HHZ. 2007-10-04T02:09:27.98 0.1 undecidable manual Sg 341 110.8002 -0.172 86
IV.VMG.SHZ. 2007-10-04T02:09:26.59 0.1 undecidable manual Sg 23 101.9202 0.825 73
IV.CRE.BHZ. 2007-10-04T02:09:23.52 0.1 undecidable manual Sg 52 91.8414 0.426 86
IV.NRCA.SHZ. 2007-10-04T02:09:23.24 0.3 undecidable manual Pg 100 170.8956 -0.625 47
IV.LNSS.BHN. 2007-10-04T02:09:23.40 0.1 undecidable manual Pg 109 171.9945 -0.64 61
IV.GSCL.SHZ. 2007-10-04T02:09:20.05 0.3 undecidable manual Pg 345 141.5472 0.697 52
IV.CESI.BHZ. 2007-10-04T02:09:20.87 0.1 positive manual Pg 94 151.2375 0.031 81
IV.MAON.HHZ. 2007-10-04T02:09:19.88 0.3 undecidable manual Sg 175 76.7676 0.819 57
IV.CAFI.HHZ. 2007-10-04T02:09:18.32 0.1 undecidable manual Sg 72 78.0663 -1.096 63
IV.TOLF.HHE. 2007-10-04T02:09:18.59 0.1 undecidable manual Pg 146 140.4483 -0.595 71
IV.ASS.SHZ. 2007-10-04T02:09:17.67 0.3 undecidable manual Pg 92 130.2696 0.056 64
IV.CRMI.HHN. 2007-10-04T02:09:17.51 0.3 undecidable manual Sg 355 74.8695 -1.04 51
IV.PIEI.BHE. 2007-10-04T02:09:17.88 0.3 undecidable manual Pg 68 128.871 0.486 59
IV.FNVD.HHZ. 2007-10-04T02:09:16.83 0.3 undecidable manual Pg 3 116.6943 1.316 41
IV.MURB.HHZ. 2007-10-04T02:09:16.38 0.1 undecidable manual Pg 82 120.7902 0.239 84
IV.CDCA.SHE. 2007-10-04T02:09:14.61 10.0 undecidable manual Pg 0 0 0
IV.BADI.EHZ. 2007-10-04T02:09:14.45 0.1 undecidable manual Pg 65 106.116 0.561 80
IV.SEI.SHZ. 2007-10-04T02:09:14.64 0.3 undecidable manual Pg 14 106.9152 0.629 58
IV.SFI.SHZ. 2007-10-04T02:09:14.60 0.1 undecidable manual Pg 36 108.6135 0.333 84
IV.BDI.HHZ. 2007-10-04T02:09:14.40 0.1 undecidable manual Pg 341 110.8002 -0.211 85
IV.VMG.SHZ. 2007-10-04T02:09:13.93 0.1 undecidable manual Pg 23 101.9202 0.697 76
IV.CRE.BHZ. 2007-10-04T02:09:12.30 0.1 undecidable manual Pg 52 91.8414 0.609 81
IV.LATE.HHZ. 2007-10-04T02:09:11.09 0.1 undecidable manual Pg 132 83.25 0.727 79
IV.ARCI.HHE. 2007-10-04T02:09:10.36 0.1 undecidable manual Sg 130 45.7209 -0.408 91
IV.MAON.HHZ. 2007-10-04T02:09:09.97 0.1 undecidable manual Pg 175 76.7676 0.608 83
IV.CAFI.HHZ. 2007-10-04T02:09:09.65 0.1 undecidable manual Pg 72 78.0663 0.083 94
IV.CSNT.BHZ. 2007-10-04T02:09:09.00 0.1 undecidable manual Sg 27 44.1225 -1.354 60
IV.SACS.HHZ. 2007-10-04T02:09:09.84 0.1 undecidable manual Pg 113 76.2681 0.561 85
IV.PII.SHZ. 2007-10-04T02:09:08.94 0.1 undecidable manual Pg 328 79.0653 -0.777 76
IV.CASP.HHZ. 2007-10-04T02:09:08.14 0.1 undecidable manual Sg 202 39.0276 -0.856 80
IV.CRMI.HHN. 2007-10-04T02:09:08.58 0.1 undecidable manual Pg 355 74.8695 -0.487 86
IV.ARCI.HHE. 2007-10-04T02:09:04.59 0.1 undecidable manual Pg 130 45.7209 0.016 100
IV.CASP.HHZ. 2007-10-04T02:09:03.21 0.1 undecidable manual Pg 202 39.0276 -0.341 95
IV.CSNT.BHZ. 2007-10-04T02:09:03.64 0.1 undecidable manual Pg 27 44.1225 -0.695 83
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