Earthquake with magnitude of ML 0.9 on date 16-01-2011 and time 06:14:40 (Italy) in region 7 km NW Montieri (GR)

A magnitude ML 0.9 earthquake occured in region: 7 km NW Montieri (GR), on

  • 16-01-2011 05:14:40 (UTC)
  • 16-01-2011 06:14:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1910, 10.9920 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.

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 7 1204 1204
Castelnuovo di Val di Cecina PI 7 2231 3435
Chiusdino SI 9 1903 5338
Radicondoli SI 9 914 6252
Monterotondo Marittimo GR 12 1371 7623
Pomarance PI 16 5897 13520
Monticiano SI 16 1571 15091
Casole d'Elsa SI 17 3897 18988
Massa Marittima GR 18 8375 27363

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km W of Siena (53903 inhabitants)
49 Km N of Grosseto (82087 inhabitants)
65 Km S of Scandicci (50609 inhabitants)
68 Km SW of Firenze (382808 inhabitants)
68 Km SE of Livorno (159219 inhabitants)
75 Km SE of Pisa (89158 inhabitants)
77 Km S of Prato (191150 inhabitants)
78 Km W of Arezzo (99543 inhabitants)
83 Km SE of Lucca (89046 inhabitants)
83 Km S of Pistoia (90315 inhabitants)
96 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 1.5
ML 0.9
2011-01-16
05:14:40
43.191 10.992 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1162079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-01-16 05:14:40 ± 0.33
Latitude 43.1910 ± 0.0126
Longitude 10.9920 ± 0.0148
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1162079

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1289
Semi-minor axis of confidence ellipse (meter) 1198
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 1843.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 268
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.04587
Epicentral distance of station farthest from the epicenter (degree) 0.23023
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1162079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:37:55

Md:1.5

Field Value
Value 1.5
Uncertainty 0.0
Num. used stations
Type of magnitude Md
Reference to an origin 1162079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:37:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SASS.HHE. 2011-01-16T05:14:49.53 0.3 undecidable manual Sg 287 25.5522 -0.133 71
IV.TRIF.HHZ. 2011-01-16T05:14:45.12 0.3 undecidable manual Sg 221 11.0778 0.002 75
IV.SASS.HHE. 2011-01-16T05:14:45.92 0.1 undecidable manual Pg 287 25.5522 0.172 94
IV.TRIF.HHZ. 2011-01-16T05:14:43.12 0.1 undecidable manual Pg 221 11.0778 -0.004 100
IV.GRFL.SHZ. 2011-01-16T05:14:43.75 0.3 undecidable manual Sg 195 5.0949 0.124 74
IV.GRFL.SHZ. 2011-01-16T05:14:42.10 0.1 undecidable manual Pg 195 5.0949 -0.163 98
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