Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 29-05-2011 and time 07:25:25 (UTC) in region 3 km S Montieri (GR)

A magnitude ML 2.0 earthquake occured in region: 3 km S Montieri (GR), on

  • 29-05-2011 07:25:25 (UTC)
  • 29-05-2011 09:25:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1020, 11.0150 at 8 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 9 1903 3107
Massa Marittima GR 12 8375 11482
Monterotondo Marittimo GR 14 1371 12853
Monticiano SI 14 1571 14424
Castelnuovo di Val di Cecina PI 15 2231 16655
Roccastrada GR 16 9199 25854
Radicondoli SI 18 914 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Siena (53903 inhabitants)
39 Km N of Grosseto (82087 inhabitants)
74 Km S of Scandicci (50609 inhabitants)
76 Km SE of Livorno (159219 inhabitants)
77 Km S of Firenze (382808 inhabitants)
81 Km SW of Arezzo (99543 inhabitants)
84 Km SE of Pisa (89158 inhabitants)
87 Km S of Prato (191150 inhabitants)
92 Km SE of Lucca (89046 inhabitants)
93 Km S of Pistoia (90315 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 2.0 		2011-05-29
07:25:25		 43.102 11.015 8 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1223689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-05-29 07:25:25 ± 0.13
Latitude 43.1020 ± 0.0063
Longitude 11.0150 ± 0.0160
Depth (km) 8 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1223689

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1263
Semi-minor axis of confidence ellipse (meter) 684
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 1476.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.11516
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 1223689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:00:54

Md:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1223689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:00:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SEI.SHZ. 2011-05-29T07:25:57.84 0.1 undecidable manual Sg 15 109.2129 0.14 99
IV.VMG.SHZ. 2011-05-29T07:25:55.77 0.3 undecidable manual Sg 24 104.4177 -0.656 65
IV.MURB.HHZ. 2011-05-29T07:25:50.11 10.0 undecidable manual Pg 0 0 0
IV.MAON.HHZ. 2011-05-29T07:25:49.29 0.6 undecidable manual Sg 173 75.2691 0.644 46
IV.FIR.HHN. 2011-05-29T07:25:47.84 10.0 undecidable manual Pg 0 0 0
IV.ATPC.HHN. 2011-05-29T07:25:46.54 0.3 undecidable manual Pg 70 123.7872 0.246 70
IV.FNVD.HHZ. 2011-05-29T07:25:45.83 0.6 undecidable manual Pg 4 118.5924 0.336 47
IV.BDI.HHZ. 2011-05-29T07:25:44.08 0.3 undecidable manual Pg 343 111.6993 -0.361 71
IV.PARC.HHZ. 2011-05-29T07:25:44.87 0.6 undecidable manual Pg 58 115.7952 -0.197 48
IV.SEI.SHZ. 2011-05-29T07:25:44.33 0.3 undecidable manual Pg 15 109.2129 0.28 72
IV.BADI.EHZ. 2011-05-29T07:25:44.49 0.3 undecidable manual Pg 65 109.0131 0.465 69
IV.SFI.EHZ. 2011-05-29T07:25:44.31 0.3 undecidable manual Pg 37 111.3996 -0.08 75
IV.VMG.SHZ. 2011-05-29T07:25:43.89 0.3 undecidable manual Pg 24 104.4177 0.576 67
IV.ASQU.HHZ. 2011-05-29T07:25:42.50 0.3 undecidable manual Pg 39 99.123 0.001 78
IV.CRE.HHE. 2011-05-29T07:25:42.27 0.3 undecidable manual Pg 52 94.8384 0.434 72
GU.MAIM.HHN. 2011-05-29T07:25:41.94 0.3 undecidable manual Pg 335 99.5226 -0.613 67
IV.MGAB.HHN. 2011-05-29T07:25:41.48 0.3 undecidable manual Pg 103 91.4418 0.173 76
IV.ARCI.HHE. 2011-05-29T07:25:40.02 0.3 undecidable manual Sg 126 46.5201 -0.939 65
IV.MAON.HHZ. 2011-05-29T07:25:39.56 0.3 undecidable manual Pg 173 75.2691 0.738 67
IV.CAFI.HHE. 2011-05-29T07:25:39.33 0.1 undecidable manual Pg 72 80.9523 -0.36 100
IV.CASP.HHZ. 2011-05-29T07:25:37.85 0.3 undecidable manual Sg 200 36.5412 -0.461 80
IV.NOVE.EHE. 2011-05-29T07:25:34.31 10.0 undecidable manual Pg 0 0 0
IV.ARCI.HHE. 2011-05-29T07:25:34.28 0.3 undecidable manual Pg 126 46.5201 -0.106 84
IV.CASP.HHZ. 2011-05-29T07:25:32.93 0.3 undecidable manual Pg 200 36.5412 0.074 86
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
Waveforms Seismic signals in miniseed + resp format Download