Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 20-06-2009 and time 23:25:40 (UTC) in region 8 km SW Pomarance (PI)

A magnitude ML 2.2 earthquake occured in region: 8 km SW Pomarance (PI), on

  • 20-06-2009 23:25:40 (UTC)
  • 21-06-2009 01:25:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2460, 10.8140 at 9 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
Pomarance PI 8 5897 5897
Castelnuovo di Val di Cecina PI 9 2231 8128
Monteverdi Marittimo PI 11 758 8886
Monterotondo Marittimo GR 12 1371 10257
Guardistallo PI 16 1234 11491
Casale Marittimo PI 17 1122 12613
Montecatini Val di Cecina PI 17 1749 14362
Montescudaio PI 18 2144 16506
Bibbona LI 18 3175 19681
Volterra PI 18 10519 30200
Radicondoli SI 19 914 31114
Sassetta LI 19 514 31628
Castagneto Carducci LI 19 9010 40638

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Siena (53903 inhabitants)
53 Km SE of Livorno (159219 inhabitants)
59 Km NW of Grosseto (82087 inhabitants)
62 Km SE of Pisa (89158 inhabitants)
64 Km SW of Scandicci (50609 inhabitants)
68 Km SW of Firenze (382808 inhabitants)
71 Km SE of Lucca (89046 inhabitants)
74 Km SW of Prato (191150 inhabitants)
77 Km S of Pistoia (90315 inhabitants)
83 Km SE of Viareggio (62467 inhabitants)
90 Km W of Arezzo (99543 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 2.2 		2009-06-20
23:25:40		 43.246 10.814 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 899539
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-06-20 23:25:40 ± 0.23
Latitude 43.2460 ± 0.0090
Longitude 10.8140 ± 0.0136
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 899539

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1233
Semi-minor axis of confidence ellipse (meter) 595
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 1486.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.66
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.28243
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 899539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:06:28

Md:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 899539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:06:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTRZ.HHN. 2009-06-20T23:26:21.32 10.0 undecidable manual Sg 0 0 0
IV.FNVD.HHN. 2009-06-20T23:26:11.48 0.3 undecidable manual Sg 13 105.2169 0.242 63
IV.SNTG.SHZ. 2009-06-20T23:26:10.72 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2009-06-20T23:26:09.98 0.6 undecidable manual Sg 36 98.7234 0.488 41
IV.MAON.HHN. 2009-06-20T23:26:08.49 0.3 undecidable manual Sg 164 94.239 0.182 65
IV.FSSB.SHZ. 2009-06-20T23:26:08.61 10.0 undecidable manual Pg 0 0 0
IV.BDI.HHN. 2009-06-20T23:26:06.97 0.3 undecidable manual Sg 349 92.241 -0.802 54
IV.GSCL.SHZ. 2009-06-20T23:26:04.40 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHZ. 2009-06-20T23:26:04.90 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2009-06-20T23:26:04.73 0.6 undecidable manual Pg 76 142.3464 0.862 32
GU.MAIM.HHZ. 2009-06-20T23:26:03.21 0.3 undecidable manual Sg 341 78.5658 -0.904 53
IV.GROG.HHN. 2009-06-20T23:26:03.44 0.3 undecidable manual Sg 285 77.0673 -0.281 66
IV.CDCA.EHZ. 2009-06-20T23:26:01.19 10.0 undecidable manual Pg 0 0 0
IV.ARCI.HHZ. 2009-06-20T23:26:00.78 0.1 undecidable manual Sg 129 69.1752 -0.821 75
IV.CING.HHN. 2009-06-20T23:26:00.23 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHE. 2009-06-20T23:25:59.68 0.6 undecidable manual Pg 109 111.3996 0.581 38
IV.SFI.EHE. 2009-06-20T23:25:59.50 0.3 undecidable manual Pg 48 110.6004 0.535 58
IV.CRE.HHZ. 2009-06-20T23:25:58.23 0.6 undecidable manual Pg 65 100.5216 0.812 36
IV.CAFI.HHE. 2009-06-20T23:25:58.22 10.0 undecidable manual Pg 0 0 0
IV.FNVD.HHN. 2009-06-20T23:25:58.93 0.3 undecidable manual Pg 13 105.2169 0.79 53
IV.SEI.SHZ. 2009-06-20T23:25:58.02 0.1 undecidable manual Pg 26 99.7224 0.728 74
MN.VLC.HHN. 2009-06-20T23:25:58.94 0.3 undecidable manual Pg 341 107.0151 0.528 59
IV.PII.SHZ. 2009-06-20T23:25:57.98 0.1 undecidable manual Sg 336 57.6978 -0.579 85
IV.VMG.SHZ. 2009-06-20T23:25:57.93 0.1 undecidable manual Pg 36 98.7234 0.798 72
IV.MAON.HHN. 2009-06-20T23:25:57.44 0.3 undecidable manual Pg 164 94.239 0.986 50
SI.ROSI.BHZ. 2009-06-20T23:25:57.86 10.0 undecidable manual Pg 0 0 0
IV.BDI.HHN. 2009-06-20T23:25:56.19 0.1 undecidable manual Pg 349 92.241 0.048 90
IV.CSNT.HHE. 2009-06-20T23:25:54.54 0.1 undecidable manual Sg 57 45.9207 -0.863 77
IV.GROG.HHN. 2009-06-20T23:25:53.94 0.3 undecidable manual Pg 285 77.0673 0.137 68
GU.MAIM.HHZ. 2009-06-20T23:25:53.90 0.1 undecidable manual Pg 341 78.5658 -0.13 91
IV.ARCI.HHZ. 2009-06-20T23:25:52.83 0.3 undecidable manual Pg 129 69.1752 0.25 68
IV.PII.SHZ. 2009-06-20T23:25:50.72 0.1 undecidable manual Pg 336 57.6978 -0.1 95
IV.CRMI.HHN. 2009-06-20T23:25:50.97 10.0 undecidable manual Sg 0 0 0
IV.CSNT.HHE. 2009-06-20T23:25:48.63 0.1 undecidable manual Pg 57 45.9207 -0.365 92
IV.CRMI.HHN. 2009-06-20T23:25:47.77 10.0 undecidable manual Pg 0 0 0
IV.GRFL.SHZ. 2009-06-20T23:25:46.24 0.1 undecidable manual Sg 130 16.9719 -0.701 87
IV.GRFL.SHZ. 2009-06-20T23:25:43.90 0.1 undecidable manual Pg 130 16.9719 -0.216 100
IV.MTRZ.HHN. 2009-06-20T23:25:37.09 10.0 undecidable manual Pg 0 0 0
IV.PZZT.HHE. 2009-06-20T23:25:36.02 10.0 undecidable manual Pg 0 0 0
IV.PTRJ.HHN. 2009-06-20T23:25:32.86 10.0 undecidable manual Pg 0 0 0
IV.CMPO.HHZ. 2009-06-20T23:25:31.67 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
Waveforms Seismic signals in miniseed + resp format Download