Earthquake with magnitude of ML 1.2 on date 29-03-2011 and time 10:03:26 (UTC) in region 8 km W Campagnatico (GR)

A magnitude ML 1.2 earthquake occured in region: 8 km W Campagnatico (GR), on

  • 29-03-2011 10:03:26 (UTC)
  • 29-03-2011 12:03:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8790, 11.1830 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
Campagnatico GR 8 2412 2412
Grosseto GR 14 82087 84499
Roccastrada GR 15 9199 93698
Civitella Paganico GR 15 3154 96852
Cinigiano GR 17 2618 99470

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Grosseto (82087 inhabitants)
50 Km S of Siena (53903 inhabitants)
87 Km SW of Arezzo (99543 inhabitants)
91 Km NW of Viterbo (67173 inhabitants)
98 Km S of Scandicci (50609 inhabitants)
99 Km S of Firenze (382808 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 1.8
ML 1.2
2011-03-29
10:03:26
42.879 11.183 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1188339
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-03-29 10:03:26 ± 0.08
Latitude 42.8790 ± 0.0054
Longitude 11.1830 ± 0.0049
Depth (km) 8 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1188339

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 579
Semi-minor axis of confidence ellipse (meter) 316
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 14
Circular confidence region, given by single value of horizontal uncertainty (meter) 721.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31296
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1188339
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:12:57

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1188339
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:12:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ESLN.HHN. 2011-03-29T10:04:21.70 10.0 undecidable manual Sg 0 0 0
CH.FUSIO.HHN. 2011-03-29T10:03:57.40 10.0 undecidable manual Pg 0 0 0
IV.ORI.HHZ. 2011-03-29T10:03:50.79 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHZ. 2011-03-29T10:03:43.06 10.0 undecidable manual Pg 0 0 0
IV.TRIF.HHZ. 2011-03-29T10:03:39.33 0.3 undecidable manual Sg 319 34.743 0.01 75
IV.CASP.HHZ. 2011-03-29T10:03:36.90 0.6 undecidable manual Sg 249 27.6501 -0.056 50
IV.ARCI.HHZ. 2011-03-29T10:03:35.47 0.6 undecidable manual Sg 97 23.9538 -0.244 49
IV.TRIF.HHZ. 2011-03-29T10:03:34.06 0.1 undecidable manual Pg 319 34.743 -0.037 100
IV.ARCI.HHZ. 2011-03-29T10:03:32.23 0.3 undecidable manual Pg 97 23.9538 0.216 74
IV.CASP.HHZ. 2011-03-29T10:03:32.75 0.3 undecidable manual Pg 249 27.6501 0.019 76
IV.FAGN.HHZ. 2011-03-29T10:03:31.93 10.0 undecidable manual Pg 0 0 0
IV.ESLN.HHN. 2011-03-29T10:03:15.47 10.0 undecidable manual Pg 0 0 0
IV.PRMA.HHN. 2011-03-29T10:03:07.55 10.0 undecidable manual Pg 0 0 0
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