Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 30-04-2011 and time 00:07:35 (Italy) in region 5 km W Castelnuovo di Val di Cecina (PI)

A magnitude ML 2.2 earthquake occured in region: 5 km W Castelnuovo di Val di Cecina (PI), on

  • 29-04-2011 22:07:35 (UTC)
  • 30-04-2011 00:07:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2050, 10.8440 at 7 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
Castelnuovo di Val di Cecina PI 5 2231 2231
Monterotondo Marittimo GR 7 1371 3602
Monteverdi Marittimo PI 11 758 4360
Pomarance PI 11 5897 10257
Montieri GR 16 1204 11461
Radicondoli SI 17 914 12375
Massa Marittima GR 18 8375 20750
Sassetta LI 18 514 21264
Suvereto LI 19 3072 24336
Castagneto Carducci LI 20 9010 33346

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Siena (53903 inhabitants)
54 Km NW of Grosseto (82087 inhabitants)
58 Km SE of Livorno (159219 inhabitants)
67 Km SE of Pisa (89158 inhabitants)
67 Km SW of Scandicci (50609 inhabitants)
71 Km SW of Firenze (382808 inhabitants)
76 Km SE of Lucca (89046 inhabitants)
78 Km S of Prato (191150 inhabitants)
81 Km S of Pistoia (90315 inhabitants)
88 Km SE of Viareggio (62467 inhabitants)
89 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 2.8
ML 2.2 		2011-04-29
22:07:35		 43.205 10.844 7 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1204199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-29 22:07:35 ± 0.1
Latitude 43.2050 ± 0.0045
Longitude 10.8440 ± 0.0086
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1204199

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 672
Semi-minor axis of confidence ellipse (meter) 325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 244
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) 117
Number of associated phases, regardless of their use for origin computation 62
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.15023
Number of stations at which the event was observed 50
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1204199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:34:23

Md:2.8

Field Value
Value 2.8
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1204199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:34:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TEOL.HHE. 2011-04-29T22:08:38.36 10.0 undecidable manual Sn 0 0 0
IV.STAL.HHE. 2011-04-29T22:08:28.12 10.0 undecidable manual Pn 0 0 0
IV.RMP.HHZ. 2011-04-29T22:08:23.20 10.0 undecidable manual Pn 0 0 0
IV.TEOL.HHE. 2011-04-29T22:08:21.38 10.0 undecidable manual Pn 0 0 0
IV.FAGN.HHE. 2011-04-29T22:08:16.39 10.0 undecidable manual Pn 0 0 0
IV.GUMA.HHE. 2011-04-29T22:08:12.93 10.0 undecidable manual Pn 0 0 0
IV.SMA1.EHZ. 2011-04-29T22:08:10.17 10.0 undecidable manual Pg 0 0 0
IV.CING.HHZ. 2011-04-29T22:08:08.85 10.0 undecidable manual Pg 0 0 0
IV.LNSS.HHN. 2011-04-29T22:08:07.36 10.0 undecidable manual Pg 0 0 0
GU.SC2M.HHE. 2011-04-29T22:08:05.51 10.0 undecidable manual Pg 0 0 0
IV.ASQU.HHZ. 2011-04-29T22:08:05.41 0.1 undecidable manual Sg 49 100.5216 -0.155 83
IV.FSSB.HHE. 2011-04-29T22:08:05.03 10.0 undecidable manual Pg 0 0 0
IV.CRE.HHZ. 2011-04-29T22:08:05.29 0.1 undecidable manual Sg 62 100.4217 -0.248 81
IV.FDMO.HHE. 2011-04-29T22:08:05.71 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHE. 2011-04-29T22:08:04.40 10.0 undecidable manual Pg 0 0 0
IV.BDI.HHN. 2011-04-29T22:08:04.31 0.1 undecidable manual Sg 348 97.125 -0.359 80
IV.SNTG.HHZ. 2011-04-29T22:08:04.98 10.0 undecidable manual Pg 0 0 0
IV.MAON.HHZ. 2011-04-29T22:08:03.35 0.1 undecidable manual Sg 165 89.244 0.788 70
IV.ARVD.HHE. 2011-04-29T22:08:03.75 10.0 undecidable manual Pg 0 0 0
IV.CAFI.HHE. 2011-04-29T22:08:03.74 0.1 undecidable manual Sg 81 91.7415 0.523 77
IV.FRON.EHZ. 2011-04-29T22:08:02.75 10.0 undecidable manual Pg 0 0 0
IV.ERBM.EHZ. 2011-04-29T22:08:01.13 10.0 undecidable manual Pg 0 0 0
IV.SSFR.HHZ. 2011-04-29T22:08:01.95 10.0 undecidable manual Pg 0 0 0
GU.MAIM.HHZ. 2011-04-29T22:08:01.14 0.1 undecidable manual Sg 340 83.6496 0.085 87
IV.TOLF.HHZ. 2011-04-29T22:08:01.25 10.0 undecidable manual Pg 0 0 0
IV.MCIV.HHZ. 2011-04-29T22:08:00.72 0.1 undecidable manual Sg 125 82.4508 -0.033 88
IV.MTRZ.HHZ. 2011-04-29T22:08:00.49 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2011-04-29T22:07:59.90 10.0 undecidable manual Pg 0 0 0
IV.ZCCA.HHE. 2011-04-29T22:07:58.90 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHZ. 2011-04-29T22:07:58.13 10.0 undecidable manual Pg 0 0 0
IV.ATPC.HHZ. 2011-04-29T22:07:58.54 10.0 undecidable manual Pg 0 0 0
IV.PLMA.HHN. 2011-04-29T22:07:58.45 10.0 undecidable manual Pg 0 0 0
IV.RM29.EHN. 2011-04-29T22:07:57.00 10.0 undecidable manual Pg 0 0 0
IV.LAV9.HHZ. 2011-04-29T22:07:56.99 10.0 undecidable manual Pg 0 0 0
IV.ATTE.HHZ. 2011-04-29T22:07:56.21 0.1 undecidable manual Pg 90 122.0889 0.045 81
IV.ATVO.HHZ. 2011-04-29T22:07:56.70 0.1 undecidable manual Pg 81 127.6722 -0.328 75
IV.PARC.HHZ. 2011-04-29T22:07:56.32 0.1 undecidable manual Pg 66 122.6883 0.064 81
IV.ARCI.HHZ. 2011-04-29T22:07:55.07 0.1 undecidable manual Sg 127 64.491 -0.878 71
IV.BADI.EHZ. 2011-04-29T22:07:55.56 0.1 undecidable manual Pg 73 117.8931 0.04 82
IV.RM33.EHZ. 2011-04-29T22:07:55.38 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2011-04-29T22:07:54.02 0.1 undecidable manual Pg 107 107.8143 0.061 83
IV.FNVD.HHZ. 2011-04-29T22:07:54.67 0.1 undecidable manual Pg 12 109.113 0.503 75
IV.SFI.EHZ. 2011-04-29T22:07:54.50 0.1 undecidable manual Pg 46 111.8991 -0.102 82
IV.VMG.SHZ. 2011-04-29T22:07:53.12 0.1 undecidable manual Pg 34 101.0211 0.194 82
IV.LATE.HHZ. 2011-04-29T22:07:53.98 0.1 undecidable manual Pg 130 101.9202 0.919 64
IV.SEI.SHZ. 2011-04-29T22:07:53.64 0.1 undecidable manual Pg 24 102.9192 0.435 78
IV.SACS.HHZ. 2011-04-29T22:07:52.39 0.1 undecidable manual Pg 114 95.0382 0.396 79
IV.ASQU.HHZ. 2011-04-29T22:07:52.56 0.1 undecidable manual Pg 49 100.5216 -0.274 81
IV.BDI.HHN. 2011-04-29T22:07:52.29 0.1 undecidable manual Pg 348 97.125 -0.034 85
IV.CRE.HHZ. 2011-04-29T22:07:52.95 0.1 undecidable manual Pg 62 100.4217 0.131 83
IV.CAFI.HHE. 2011-04-29T22:07:51.07 0.1 undecidable manual Pg 81 91.7415 -0.414 80
IV.MAON.HHZ. 2011-04-29T22:07:51.84 0.1 undecidable manual Pg 165 89.244 0.738 72
GU.MAIM.HHZ. 2011-04-29T22:07:50.05 0.1 undecidable manual Pg 340 83.6496 -0.189 85
IV.CASP.HHN. 2011-04-29T22:07:50.40 0.1 undecidable manual Sg 178 46.0206 -0.609 82
IV.MCIV.HHZ. 2011-04-29T22:07:49.96 0.1 undecidable manual Pg 125 82.4508 -0.099 87
IV.FIR.HHZ. 2011-04-29T22:07:48.40 10.0 undecidable manual Pg 0 0 0
IV.ARCI.HHZ. 2011-04-29T22:07:47.00 0.1 undecidable manual Pg 127 64.491 -0.286 86
IV.CASP.HHN. 2011-04-29T22:07:44.25 0.1 undecidable manual Pg 178 46.0206 -0.183 91
IV.SASS.HHZ. 2011-04-29T22:07:40.86 0.1 undecidable manual Sg 295 13.7751 -0.008 100
IV.TRIF.HHZ. 2011-04-29T22:07:39.96 0.1 undecidable manual Sg 154 11.0778 -0.106 99
IV.TRIF.HHZ. 2011-04-29T22:07:38.05 0.1 undecidable manual Pg 154 11.0778 -0.07 99
IV.SASS.HHZ. 2011-04-29T22:07:38.51 0.1 undecidable manual Pg 295 13.7751 -0.071 99
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