Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 09-02-2023 and time 08:14:30 (Italy) in region 2 km E Siena (SI)

A magnitude ML 2.0 earthquake occured in region: 2 km E Siena (SI), on

  • 09-02-2023 07:14:30 (UTC)
  • 09-02-2023 08:14:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3140, 11.3620 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
Siena SI 3 53903 53903
Monteroni d'Arbia SI 10 9088 62991
Sovicille SI 11 10116 73107
Castelnuovo Berardenga SI 12 9097 82204
Monteriggioni SI 15 9810 92014
Murlo SI 16 2389 94403
Asciano SI 18 7118 101521
Gaiole in Chianti SI 18 2758 104279
Castellina in Chianti SI 19 2859 107138
Radda in Chianti SI 19 1613 108751
Rapolano Terme SI 20 5249 114000

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km E of Siena (53903 inhabitants)
45 Km W of Arezzo (99543 inhabitants)
52 Km S of Firenze (382808 inhabitants)
52 Km S of Scandicci (50609 inhabitants)
65 Km NE of Grosseto (82087 inhabitants)
67 Km SE of Prato (191150 inhabitants)
78 Km SE of Pistoia (90315 inhabitants)
86 Km W of Perugia (166134 inhabitants)
89 Km E of Livorno (159219 inhabitants)
89 Km SE of Pisa (89158 inhabitants)
91 Km SE of Lucca (89046 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 2023-02-09
07:14:30		 43.3135 11.3622 9 2024-03-01
17:17:56		 Bollettino Sismico Italiano INGV 114753761
Reviewed
Rev100 		ML 2.2 2023-02-09
07:14:30		 43.3198 11.3667 6 2023-02-09
07:30:35		 Sala Sismica INGV-Roma 114283871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-09 07:14:30 ± 0.11
Latitude 43.3135 ± 0.0045
Longitude 11.3622 ± 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 114753761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 757
Semi-minor axis of confidence ellipse (meter) 439
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 282
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.80309
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 43
Type of magnitude ML
Reference to an origin 114753761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-09-18 13:48:31

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 33
Type of magnitude ML
Reference to an origin 114283871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-09 07:30:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.LRNO.HNZ. 2023-02-09T07:16:09.30 3.0 undecidable manual Sg 13.37 0
IV.MSRU.HHZ. 2023-02-09T07:16:01.50 3.0 undecidable manual Pn 3.03 0
IV.GALF.HHZ. 2023-02-09T07:16:01.64 3.0 undecidable manual Pn 1.02 0
RF.GEPF.HHZ. 2023-02-09T07:15:59.85 3.0 undecidable manual Sn 0.36 0
IV.BRMO.HHZ. 2023-02-09T07:15:54.83 3.0 undecidable manual Sn -4.59 0
IV.LRP.EHZ. 2023-02-09T07:15:48.57 3.0 undecidable manual Sg 9.51 0
IV.PIGN.HHZ. 2023-02-09T07:15:23.58 3.0 positive manual Pg 5.89 0
IV.MSSA.HHZ. 2023-02-09T07:15:19.61 3.0 undecidable manual Sn -1.13 0
IV.RNI2.HHZ. 2023-02-09T07:15:17.74 3.0 negative manual Pg 4.92 0
IV.BAG8.HNZ. 2023-02-09T07:15:15.15 3.0 undecidable manual Pg 3.63 0
IV.ZEN8.EHZ. 2023-02-09T07:15:05.76 3.0 undecidable manual Pn -2.74 0
IV.SEI.HHZ. 2023-02-09T07:14:55.53 1.0 undecidable manual S 360 82.1511 50 0.32 22
IV.PARC.HHZ. 2023-02-09T07:14:54.76 1.0 undecidable manual S 62 79.7646 50 0.2 23
GU.GSCL.HHZ. 2023-02-09T07:14:51.12 3.0 negative manual P -0.96 0
IV.RUFI.EHZ. 2023-02-09T07:14:49.04 0.3 undecidable manual S 11 59.3961 50 -0.08 73
IV.CRMI.HNN. 2023-02-09T07:14:49.31 0.6 undecidable manual S 330 61.6938 50 -0.43 45
IV.CRE.HHZ. 2023-02-09T07:14:49.19 0.6 undecidable manual S 54 58.2972 50 0.35 46
TV.SF11.HHZ. 2023-02-09T07:14:47.17 0.6 undecidable manual S 152 55.5999 50 -0.95 37
IV.ARCI.HHZ. 2023-02-09T07:14:46.36 0.6 undecidable manual S 170 52.0035 50 -0.79 40
IV.LMD.HHZ. 2023-02-09T07:14:46.02 0.6 undecidable manual P 18 89.1441 50 0.27 44
IV.CAFI.HHZ. 2023-02-09T07:14:45.43 0.6 undecidable manual S 88 48.8178 50 -0.86 39
IV.SEI.HHZ. 2023-02-09T07:14:45.17 0.6 undecidable manual P 360 82.1511 50 0.49 43
IV.SFI.HNN. 2023-02-09T07:14:44.40 0.3 undecidable manual P 31 76.2681 50 0.63 62
IV.PARC.HHZ. 2023-02-09T07:14:44.63 0.3 undecidable manual P 62 79.7646 50 0.33 67
IV.TRIF.CHZ. 2023-02-09T07:14:44.58 0.6 undecidable manual S 239 43.2234 50 -0.22 49
IV.MGAB.HHZ. 2023-02-09T07:14:44.07 0.3 undecidable manual P 126 75.2691 50 0.46 66
IV.SACS.HHE. 2023-02-09T07:14:43.02 0.3 undecidable manual P 139 67.9764 50 0.53 65
IV.CASP.HHE. 2023-02-09T07:14:43.73 0.6 undecidable manual P 215 70.5738 50 0.84 38
IV.MALA4.EHZ. 2023-02-09T07:14:42.16 0.3 undecidable manual S 165 35.4423 50 -0.56 68
IV.MALA1.EHZ. 2023-02-09T07:14:42.19 0.6 undecidable manual S 165 35.5422 50 -0.58 45
IV.MALA5.EHZ. 2023-02-09T07:14:42.03 0.6 undecidable manual S 165 35.2425 50 -0.65 44
IV.MCIV.CHE. 2023-02-09T07:14:42.26 0.3 undecidable manual P 157 64.5909 50 0.3 69
TV.SF11.HHZ. 2023-02-09T07:14:41.04 0.6 undecidable manual P 152 55.5999 50 0.46 45
IV.CRMI.HNN. 2023-02-09T07:14:41.79 0.3 undecidable manual P 330 61.6938 50 0.27 70
IV.CRE.HHZ. 2023-02-09T07:14:41.73 0.3 undecidable manual P 54 58.2972 50 0.73 61
IV.RUFI.EHZ. 2023-02-09T07:14:41.17 0.3 undecidable manual P 11 59.3961 50 0.01 74
IV.ARCI.HHZ. 2023-02-09T07:14:40.09 0.3 undecidable manual P 170 52.0035 50 0.06 74
IV.OSSC.HHZ. 2023-02-09T07:14:39.01 0.3 undecidable manual S 338 25.1526 109 -0.52 71
IV.CAFI.HHZ. 2023-02-09T07:14:39.50 0.3 undecidable manual P 88 48.8178 50 -0.03 75
IV.TRIF.CHZ. 2023-02-09T07:14:38.99 0.3 undecidable manual P 239 43.2234 50 0.32 72
IV.FROS.CHZ. 2023-02-09T07:14:38.28 0.1 undecidable manual S 235 20.2686 113 0.34 99
IV.MALA4.EHZ. 2023-02-09T07:14:37.29 0.3 undecidable manual P 165 35.4423 50 -0.18 75
IV.MALA1.EHZ. 2023-02-09T07:14:37.30 0.3 undecidable manual P 165 35.5422 50 -0.19 75
IV.MALA5.EHZ. 2023-02-09T07:14:37.30 0.3 undecidable manual P 165 35.2425 50 -0.15 75
IV.CSNT.HHZ. 2023-02-09T07:14:36.94 0.1 undecidable manual S 342 18.6702 115 -0.5 96
IV.FROS.CHZ. 2023-02-09T07:14:35.05 0.1 undecidable manual P 235 20.2686 113 0.34 99
IV.OSSC.HHZ. 2023-02-09T07:14:35.30 0.1 undecidable manual P 338 25.1526 109 -0.32 99
IV.CSNT.HHZ. 2023-02-09T07:14:34.11 0.1 undecidable manual P 342 18.6702 115 -0.31 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHE. ML:2.5 0.0027445580000000002 0.2592 AML other m 2023-02-09T07:14:37.15
IV.CSNT.HHN. ML:2.4 0.0021664285000000004 0.0992 AML other m 2023-02-09T07:14:37.48
IV.FROS.CHE. ML:2.1 0.0009795507 0.1376 AML other m 2023-02-09T07:14:38.37
IV.FROS.CHN. ML:2.3 0.00164 0.14 AML other m 2023-02-09T07:14:38.99
IV.OSSC.HHE. ML:2.1 0.0008474140999999999 0.1216 AML other m 2023-02-09T07:14:39.27
IV.OSSC.HHN. ML:2.2 0.0009404999999999999 0.12 AML other m 2023-02-09T07:14:39.39
IV.TRIF.CHN. ML:1.9 0.0002585 0.14 AML other m 2023-02-09T07:14:45.40
IV.TRIF.CHE. ML:1.9 0.00027172435 0.1856 AML other m 2023-02-09T07:14:45.77
IV.CAFI.HHN. ML:1.6 0.000122486955 0.24 AML other m 2023-02-09T07:14:46.60
IV.CAFI.HNN. ML:1.7 0.00012516163999999998 0.24 AML other m 2023-02-09T07:14:46.61
IV.CAFI.HHE. ML:1.7 0.000133 0.34 AML other m 2023-02-09T07:14:48.95
IV.CAFI.HNE. ML:1.6 0.00011781255 0.3296 AML other m 2023-02-09T07:14:48.95
IV.ARCI.HNE. ML:1.9 0.00021180175 0.1792 AML other m 2023-02-09T07:14:49.34
IV.ARCI.HHE. ML:2.0 0.00023509845 0.1792 AML other m 2023-02-09T07:14:49.34
IV.ARCI.HHN. ML:2.2 0.0003634956 0.2592 AML other m 2023-02-09T07:14:49.48
IV.ARCI.HNN. ML:2.1 0.00034556969999999997 0.2592 AML other m 2023-02-09T07:14:49.48
IV.CRE.HHE. ML:2.0 0.00020649999999999998 0.3 AML other m 2023-02-09T07:14:49.64
IV.RUFI.EHE. ML:1.7 0.00009732115000000001 0.4 AML other m 2023-02-09T07:14:50.29
IV.RUFI.EHN. ML:1.5 0.00006403554999999999 0.3584 AML other m 2023-02-09T07:14:51.00
IV.CRE.HHN. ML:1.9 0.000178 0.3 AML other m 2023-02-09T07:14:53.32
IV.PARC.HHN. ML:1.6 0.000059360250000000005 0.4224 AML other m 2023-02-09T07:14:55.36
IV.FOSV.EHN. ML:2.3 0.00016549999999999998 0.16 AML other m 2023-02-09T07:14:55.79
IV.FOSV.HNN. ML:2.3 0.00015320539999999998 0.16 AML other m 2023-02-09T07:14:55.87
IV.FOSV.EHE. ML:2.0 0.000076215815 0.2208 AML other m 2023-02-09T07:14:55.72
IV.MGAB.HHN. ML:1.8 0.0000965 1.82 AML other m 2023-02-09T07:14:56.00
IV.CESI.HHE. ML:2.4 0.0001492106 0.1376 AML other m 2023-02-09T07:14:56.13
IV.CESI.HNE. ML:2.4 0.00017362505 0.1504 AML other m 2023-02-09T07:14:56.06
IV.CESI.HHN. ML:2.1 0.00008373413 0.1184 AML other m 2023-02-09T07:14:56.50
IV.PARC.HHE. ML:1.6 0.000052826545 0.4 AML other m 2023-02-09T07:14:57.27
IV.SSFR.HNE. ML:2.6 0.000354177 0.24 AML other m 2023-02-09T07:14:58.19
IV.SSFR.HHE. ML:2.5 0.000277 0.2 AML other m 2023-02-09T07:14:58.42
IV.SSFR.HHN. ML:2.5 0.00027426905 0.1632 AML other m 2023-02-09T07:14:58.39
IV.SSFR.HNN. ML:2.4 0.0002270645 0.0704 AML other m 2023-02-09T07:14:58.40
IV.ARVD.HHE. ML:1.8 0.000044284885 0.1408 AML other m 2023-02-09T07:14:58.48
IV.ARVD.HHN. ML:1.9 0.000050956034999999994 0.08 AML other m 2023-02-09T07:14:58.51
IV.MGAB.HHE. ML:1.7 0.00007335 0.24 AML other m 2023-02-09T07:14:58.63
IV.MGAB.HNN. ML:2.0 0.00014001835 0.3008 AML other m 2023-02-09T07:14:58.97
IV.SEI.HHE. ML:2.0 0.0001376394 0.2816 AML other m 2023-02-09T07:14:59.90
IV.SEI.HHN. ML:2.3 0.000245 0.42 AML other m 2023-02-09T07:15:00.54
IV.LMD.HHE. ML:1.5 0.00003572849 0.6176 AML other m 2023-02-09T07:15:00.56
IV.FRON.EHE. ML:1.6 0.000034762895000000005 0.2784 AML other m 2023-02-09T07:15:02.16
IV.NRCA.HNE. ML:2.4 0.000128669645 0.4288 AML other m 2023-02-09T07:15:03.07
IV.NRCA.HHN. ML:2.0 0.000047021784999999997 0.1184 AML other m 2023-02-09T07:15:03.39
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