Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 06-03-2016 and time 03:05:47 (Italy) in region 11 km SW Roccastrada (GR)

A magnitude ML 2.0 earthquake occured in region: 11 km SW Roccastrada (GR), on

  • 06-03-2016 02:05:47 (UTC)
  • 06-03-2016 03:05:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9310, 11.0900 at 6 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
Roccastrada GR 11 9199 9199
Gavorrano GR 15 8580 17779
Campagnatico GR 16 2412 20191
Civitella Paganico GR 17 3154 23345
Grosseto GR 19 82087 105432
Scarlino GR 19 3847 109279

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km N of Grosseto (82087 inhabitants)
48 Km SW of Siena (53903 inhabitants)
88 Km SW of Arezzo (99543 inhabitants)
92 Km S of Scandicci (50609 inhabitants)
94 Km SE of Livorno (159219 inhabitants)
94 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 		ML 2.0 2016-03-06
02:05:47		 42.9308 11.0895 6 2016-03-08
14:12:50		 Bollettino Sismico Italiano INGV 23745791
Reviewed
Rev100 		ML 2.0 2016-03-06
02:05:47		 42.9343 11.0875 5 2016-03-06
03:12:28		 Sala Sismica INGV-Roma 23733901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-03-06 02:05:47 ± 0.12
Latitude 42.9308 ± 0.0063
Longitude 11.0895 ± 0.0086
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 23745791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 748
Semi-minor axis of confidence ellipse (meter) 419
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 5
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75363
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.8
Num. used stations 3
Type of magnitude ML
Reference to an origin 23745791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-03-07 14:06:19

ML:2.0

Field Value
Value 2.0
Uncertainty 0.8
Num. used stations 3
Type of magnitude ML
Reference to an origin 23733901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-03-06 03:12:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2016-03-06T02:06:10.41 3.0 undecidable manual Pg 6.15 0
IV.MAON.HHZ. 2016-03-06T02:06:05.32 0.6 undecidable manual S 177 55.8996 50 -0.32 45
IV.MCIV.HHN. 2016-03-06T02:06:02.98 0.6 undecidable manual S 109 50.616 50 -1.27 31
IV.MGAB.HHZ. 2016-03-06T02:06:02.48 0.3 undecidable manual P 91 83.0502 50 0.45 62
IV.CAFI.HHZ. 2016-03-06T02:06:02.34 0.3 undecidable manual P 58 83.6496 50 0.23 65
IV.SACS.HHE. 2016-03-06T02:05:59.98 0.1 undecidable manual P 97 67.2771 50 0.39 86
IV.OSSC.HNE. 2016-03-06T02:05:59.57 0.1 positive manual P 11 66.9774 50 0.03 93
IV.CSNT.HHZ. 2016-03-06T02:05:58.74 0.3 undecidable manual P 15 62.2932 50 -0.08 70
IV.ARCI.HHZ. 2016-03-06T02:05:58.30 0.3 undecidable manual S 105 32.5452 100 -0.35 69
IV.MAON.HHZ. 2016-03-06T02:05:57.89 0.3 undecidable manual P 177 55.8996 50 0.06 71
IV.MCIV.HHN. 2016-03-06T02:05:56.96 0.1 negative manual P 109 50.616 50 -0.07 95
IV.CASP.HHZ. 2016-03-06T02:05:55.59 0.3 undecidable manual S 230 23.9538 104 -0.14 74
IV.TRIF.HHZ. 2016-03-06T02:05:55.51 0.6 undecidable manual S 323 25.4523 103 -0.71 42
IV.ARCI.HHZ. 2016-03-06T02:05:53.97 0.1 negative manual P 105 32.5452 100 0.18 96
IV.CASP.HHZ. 2016-03-06T02:05:52.37 0.1 undecidable manual P 230 23.9538 104 0.26 96
IV.TRIF.HHZ. 2016-03-06T02:05:52.43 0.1 positive manual P 323 25.4523 103 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARCI.HHE. ML:1.8 0.0003255 1.1 AML other m 2016-03-06T02:06:00.08
IV.ARCI.HHN. ML:1.8 0.00029000000000000006 1.58 AML other m 2016-03-06T02:05:59.39
IV.CASP.HHE. ML:2.0 0.000603 0.32 AML other m 2016-03-06T02:05:55.68
IV.CASP.HHN. ML:1.8 0.000465 1.38 AML other m 2016-03-06T02:05:56.18
IV.CPGN.EHE. ML:4.9 0.05 1.58 AML other m 2016-03-06T02:07:12.59
IV.CPGN.EHN. ML:5.7 0.3 1.58 AML other m 2016-03-06T02:07:12.59
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