Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 11-08-2011 and time 21:31:06 (UTC) in region 7 km S Lizzano in Belvedere (BO)

A magnitude ML 1.4 earthquake occured in region: 7 km S Lizzano in Belvedere (BO), on

  • 11-08-2011 21:31:06 (UTC)
  • 11-08-2011 23:31:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0960, 10.8920 at 10 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
Lizzano in Belvedere BO 7 2212 2212
Sambuca Pistoiese PT 9 1626 3838
San Marcello Pistoiese PT 9 6416 10254
Alto Reno Terme BO 10 6960 17214
Cutigliano PT 11 1488 18702
Gaggio Montano BO 12 4878 23580
Piteglio PT 12 1683 25263
Castel di Casio BO 14 3448 28711
Fanano MO 15 2989 31700
Camugnano BO 18 1885 33585
Sestola MO 18 2508 36093
Pistoia PT 18 90315 126408
Abetone PT 19 621 127029
Cantagallo PO 19 3105 130134
Montese MO 20 3353 133487

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km N of Pistoia (90315 inhabitants)
29 Km NW of Prato (191150 inhabitants)
42 Km NE of Lucca (89046 inhabitants)
44 Km NW of Scandicci (50609 inhabitants)
47 Km NW of Firenze (382808 inhabitants)
57 Km SW of Bologna (386663 inhabitants)
57 Km E of Viareggio (62467 inhabitants)
58 Km NE of Pisa (89158 inhabitants)
60 Km E of Massa (69479 inhabitants)
61 Km S of Modena (184973 inhabitants)
64 Km E of Carrara (63133 inhabitants)
70 Km SE of Reggio nell'Emilia (171345 inhabitants)
72 Km W of Imola (69797 inhabitants)
76 Km NE of Livorno (159219 inhabitants)
76 Km S of Carpi (70699 inhabitants)
82 Km W of Faenza (58541 inhabitants)
85 Km E of La Spezia (93959 inhabitants)
90 Km SE of Parma (192836 inhabitants)
93 Km W of Forlì (117913 inhabitants)
93 Km NW of Siena (53903 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 1.7
ML 1.4 		2011-08-11
21:31:06		 44.096 10.892 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1270779
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-11 21:31:06 ± 0.1
Latitude 44.0960 ± 0.0063
Longitude 10.8920 ± 0.0063
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1270779

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 602
Semi-minor axis of confidence ellipse (meter) 553
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 22
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.2
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 17
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36782
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 1270779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:05:22

Md:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1270779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:05:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
BA.PZUN.HHZ. 2011-08-11T21:31:46.08 10.0 undecidable manual Pg 0 0 0
IV.CSNT.HHN. 2011-08-11T21:31:30.29 10.0 undecidable manual Pg 0 0 0
MN.VLC.HHZ. 2011-08-11T21:31:20.04 0.6 undecidable manual Sg 280 40.8258 -0.097 64
IV.SEI.SHN. 2011-08-11T21:31:18.79 10.0 undecidable manual Pg 0 0 0
IV.CRMI.HHZ. 2011-08-11T21:31:18.38 0.3 undecidable manual Sg 170 34.5432 -0.059 97
IV.VMG.SHZ. 2011-08-11T21:31:18.02 10.0 undecidable manual Pg 0 0 0
GU.MAIM.HHN. 2011-08-11T21:31:18.92 0.3 undecidable manual Sg 238 37.8288 -0.395 90
IV.BDI.HHZ. 2011-08-11T21:31:15.41 0.3 undecidable manual Sg 261 23.8539 0.013 100
IV.PTF.SHN. 2011-08-11T21:31:14.62 0.6 undecidable manual Sg 137 20.6682 0.226 64
MN.VLC.HHZ. 2011-08-11T21:31:14.56 0.3 undecidable manual Pg 280 40.8258 0.202 93
IV.FNVD.HHZ. 2011-08-11T21:31:13.63 0.3 undecidable manual Sg 67 20.0688 -0.561 89
GU.MAIM.HHN. 2011-08-11T21:31:13.70 0.3 undecidable manual Pg 238 37.8288 -0.184 94
IV.ZCCA.HHN. 2011-08-11T21:31:13.02 0.3 undecidable manual Pg 13 29.0487 0.486 90
IV.CRMI.HHZ. 2011-08-11T21:31:13.49 0.3 undecidable manual Pg 170 34.5432 0.11 96
IV.BDI.HHZ. 2011-08-11T21:31:11.71 0.6 undecidable manual Pg 261 23.8539 0.089 66
IV.PTF.SHN. 2011-08-11T21:31:11.27 0.3 undecidable manual Pg 137 20.6682 0.231 96
IV.FNVD.HHZ. 2011-08-11T21:31:10.88 0.3 undecidable manual Pg 67 20.0688 -0.046 100
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