Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 06-04-2022 and time 13:12:35 (Italy) in region 4 km NE Castelnuovo di Val di Cecina (PI)

A magnitude ML 1.1 earthquake occured in region: 4 km NE Castelnuovo di Val di Cecina (PI), on

  • 06-04-2022 11:12:35 (UTC)
  • 06-04-2022 13:12:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2320, 10.9440 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
Castelnuovo di Val di Cecina PI 4 2231 2231
Radicondoli SI 9 914 3145
Pomarance PI 10 5897 9042
Monterotondo Marittimo GR 12 1371 10413
Montieri GR 13 1204 11617
Chiusdino SI 15 1903 13520
Casole d'Elsa SI 15 3897 17417
Monteverdi Marittimo PI 19 758 18175

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Siena (53903 inhabitants)
54 Km N of Grosseto (82087 inhabitants)
62 Km SW of Scandicci (50609 inhabitants)
62 Km SE of Livorno (159219 inhabitants)
65 Km SW of Firenze (382808 inhabitants)
69 Km SE of Pisa (89158 inhabitants)
73 Km S of Prato (191150 inhabitants)
77 Km SE of Lucca (89046 inhabitants)
78 Km S of Pistoia (90315 inhabitants)
80 Km W of Arezzo (99543 inhabitants)
90 Km SE of Viareggio (62467 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 1.1 2022-04-06
11:12:35		 43.2322 10.9437 9 2022-07-08
12:33:50		 Bollettino Sismico Italiano INGV 103761871
Reviewed
Rev100 		ML 1.1 2022-04-06
11:12:35		 43.2318 10.948 9 2022-04-06
11:27:42		 Sala Sismica INGV-Roma 102838141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-04-06 11:12:35 ± 0.15
Latitude 43.2322 ± 0.0072
Longitude 10.9437 ± 0.0099
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 103761871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 840
Semi-minor axis of confidence ellipse (meter) 493
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 840.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57557
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 102838141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-04-06 11:27:42

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 103761871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-07-01 09:25:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ACATE.HNZ. 2022-04-06T11:14:11.17 3.0 undecidable manual Pn 0.72 0
RF.GEPF.HHZ. 2022-04-06T11:14:07.12 3.0 undecidable manual Sn -4.59 0
OX.MPRI.HHZ. 2022-04-06T11:14:03.95 3.0 undecidable manual Sn -5.91 0
IV.MRB1.HHZ. 2022-04-06T11:14:01.65 3.0 undecidable manual Sn -9.44 0
GU.BURY.HHZ. 2022-04-06T11:13:56.70 3.0 undecidable manual Sg 8.71 0
CR.STON.BHZ. 2022-04-06T11:13:48.98 3.0 positive manual Pn 1.36 0
IV.MOCO.HHZ. 2022-04-06T11:13:37.54 3.0 undecidable manual Pg 9.24 0
IV.OFFI.HHZ. 2022-04-06T11:13:32.60 3.0 undecidable manual Sn -0.54 0
FR.SAOF.HHZ.00 2022-04-06T11:13:26.03 3.0 negative manual Pg 9.7 0
IV.ARVD.HHZ. 2022-04-06T11:13:20.56 3.0 undecidable manual Sg -0.62 0
RD.PGF.BHZ. 2022-04-06T11:13:20.40 3.0 undecidable manual Sg -1.81 0
IV.SSFR.HHZ. 2022-04-06T11:13:20.94 3.0 undecidable manual Sg 2.89 0
IV.CESI.HHZ. 2022-04-06T11:13:19.89 3.0 undecidable manual Sg 0.83 0
IV.GIUL.HHZ. 2022-04-06T11:13:10.03 3.0 positive manual Pg -0.74 0
IV.VIVA.HHZ. 2022-04-06T11:13:04.34 3.0 undecidable manual Pg -1 0
IV.ARCI.HHZ. 2022-04-06T11:12:54.47 0.6 undecidable manual S 134 60.2952 50 -0.18 46
IV.CASP.HHZ. 2022-04-06T11:12:51.28 0.6 undecidable manual S 187 49.4172 50 -0.45 45
IV.IMOL.EHZ. 2022-04-06T11:12:49.86 3.0 undecidable manual P 0
IV.OSSC.HHZ. 2022-04-06T11:12:48.91 0.3 undecidable manual S 37 40.4262 50 -0.44 68
IV.CSNT.HHZ. 2022-04-06T11:12:48.22 0.6 undecidable manual S 46 38.628 50 -0.65 43
IV.PII.HHN. 2022-04-06T11:12:47.70 0.6 undecidable manual P 328 63.8916 50 0.54 42
IV.CRMI.HNN. 2022-04-06T11:12:47.36 0.3 undecidable manual P 3 62.5929 50 0.41 66
IV.ARCI.HHZ. 2022-04-06T11:12:47.26 0.1 undecidable manual P 134 60.2952 50 0.66 82
IV.RIBO.EHE.01 2022-04-06T11:12:46.56 0.6 undecidable manual S 165 32.5452 50 -0.66 43
IV.CASP.HHZ. 2022-04-06T11:12:45.21 0.1 undecidable manual P 187 49.4172 50 0.29 93
IV.CSNT.HHZ. 2022-04-06T11:12:43.31 0.3 undecidable manual P 46 38.628 50 0.04 75
IV.OSSC.HHZ. 2022-04-06T11:12:43.69 0.1 positive manual P 37 40.4262 50 0.15 97
IV.MAGO.CHZ. 2022-04-06T11:12:43.70 0.3 undecidable manual S 281 23.5542 111 -0.65 66
IV.RIBO.EHE.01 2022-04-06T11:12:42.37 1.0 undecidable manual P 165 32.5452 50 0.05 25
IV.FROS.CHZ. 2022-04-06T11:12:41.89 0.6 undecidable manual S 98 17.3715 117 -0.5 47
IV.MAGO.CHZ. 2022-04-06T11:12:40.82 0.3 undecidable manual P 281 23.5542 111 0.16 75
IV.FROS.CHZ. 2022-04-06T11:12:39.72 0.1 positive manual P 98 17.3715 117 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHN. ML:1.1 0.000101567995 0.2048 AML other m 2022-04-06T11:12:42.52
IV.FROS.CHE. ML:1.0 0.00008589938 0.1472 AML other m 2022-04-06T11:12:42.57
IV.MAGO.CHE. ML:1.5 0.000201 0.26 AML other m 2022-04-06T11:12:44.28
IV.MAGO.CHN. ML:1.6 0.0002505 0.24 AML other m 2022-04-06T11:12:44.38
IV.CSNT.HHE. ML:0.9 0.00002941179 0.1152 AML other m 2022-04-06T11:12:48.67
IV.CSNT.HHN. ML:1.0 0.000034940515 1.7824 AML other m 2022-04-06T11:12:48.04
IV.OSSC.HHE. ML:1.1 0.000044117595000000006 0.1792 AML other m 2022-04-06T11:12:50.29
IV.OSSC.HHN. ML:1.0 0.000035294739999999995 0.3616 AML other m 2022-04-06T11:12:50.62
IV.CASP.HHE. ML:1.1 0.000036049999999999995 1.1 AML other m 2022-04-06T11:12:51.00
IV.CASP.HHN. ML:1.1 0.000034500000000000005 0.66 AML other m 2022-04-06T11:12:52.62
IV.ARCI.HNN. ML:1.2 0.000032036110000000004 0.9344 AML other m 2022-04-06T11:12:55.28
IV.ARCI.HHE. ML:1.0 0.000021349435 2.2592 AML other m 2022-04-06T11:12:54.41
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