Earthquake with magnitude of ML 1.0 on date 17-03-2023 and time 19:22:27 (UTC) in region 4 km SE Chiusdino (SI)

A magnitude ML 1.0 earthquake occured in region: 4 km SE Chiusdino (SI), on

  • 17-03-2023 19:22:27 (UTC)
  • 17-03-2023 20:22:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1340, 11.1240 at 6 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Chiusdino SI 4 1903 1903
Monticiano SI 5 1571 3474
Montieri GR 9 1204 4678
Roccastrada GR 14 9199 13877
Radicondoli SI 16 914 14791
Sovicille SI 18 10116 24907
Castelnuovo di Val di Cecina PI 19 2231 27138

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Siena (53903 inhabitants)
42 Km N of Grosseto (82087 inhabitants)
70 Km S of Scandicci (50609 inhabitants)
72 Km S of Firenze (382808 inhabitants)
72 Km SW of Arezzo (99543 inhabitants)
81 Km SE of Livorno (159219 inhabitants)
83 Km S of Prato (191150 inhabitants)
87 Km SE of Pisa (89158 inhabitants)
91 Km S of Pistoia (90315 inhabitants)
94 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
Reviewed
Rev100
ML 1.0 2023-03-17
19:22:27
43.1342 11.1243 7 2023-03-17
19:37:15
Sala Sismica INGV-Roma 115480501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-17 19:22:27 ± 0.12
Latitude 43.1342 ± 0.0099
Longitude 11.1243 ± 0.0062
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115480501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 996
Semi-minor axis of confidence ellipse (meter) 426
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 5
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39210
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 115480501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-17 19:37:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2023-03-17T19:23:59.81 3.0 negative manual Pg 11.78 0
GU.SATI.HHZ. 2023-03-17T19:23:58.01 3.0 undecidable manual Sn 1.9 0
OT.CGL1.HHZ. 2023-03-17T19:23:53.62 3.0 negative manual Pg 11.21 0
CH.BERNI.HHZ. 2023-03-17T19:23:53.78 3.0 undecidable manual Sg 6.75 0
IV.SPS2.HHZ. 2023-03-17T19:23:52.65 3.0 undecidable manual Pg 7.07 0
IV.CMPR.HHZ. 2023-03-17T19:23:31.32 3.0 undecidable manual Pg 3.58 0
IX.SCL3.EHZ.02 2023-03-17T19:23:31.50 3.0 undecidable manual Pg 5.96 0
CH.DIX.HHZ. 2023-03-17T19:23:22.88 3.0 negative manual Pn 2.89 0
IV.SGG.HHZ. 2023-03-17T19:23:15.00 3.0 undecidable manual Pg 4.53 0
NI.VINO.HHZ. 2023-03-17T19:23:08.76 3.0 undecidable manual Pg -1.31 0
RF.GEPF.HHZ. 2023-03-17T19:23:07.68 3.0 positive manual Pg -2.07 0
IV.SMA1.EHZ. 2023-03-17T19:22:47.82 3.0 positive manual Pg -3.63 0
IV.ARCI.HHE. 2023-03-17T19:22:42.41 0.3 undecidable manual S 138 42.3243 50 0.02 72
IV.CASP.HHZ. 2023-03-17T19:22:42.14 0.1 undecidable manual S 209 43.5231 50 -0.57 84
IV.MALA4.EHZ. 2023-03-17T19:22:38.68 0.3 undecidable manual S 116 31.9458 101 -0.26 69
IV.MALA2.EHN. 2023-03-17T19:22:38.97 0.3 undecidable manual S 117 32.1456 101 -0.02 73
IV.ARCI.HHE. 2023-03-17T19:22:36.23 0.3 undecidable manual P 138 42.3243 50 0.08 71
IV.CASP.HHZ. 2023-03-17T19:22:36.79 0.1 undecidable manual P 209 43.5231 50 0.46 87
IV.MALA2.EHN. 2023-03-17T19:22:34.49 0.3 undecidable manual P 117 32.1456 101 0.31 69
IV.TRIF.CHZ. 2023-03-17T19:22:34.16 0.1 undecidable manual S 263 18.0708 110 -0.13 98
IV.MALA4.EHZ. 2023-03-17T19:22:34.22 0.3 undecidable manual P 116 31.9458 101 0.06 72
IV.RIBO.EHZ. 2023-03-17T19:22:32.94 3.0 positive manual P -1.18 0
IV.FROS.CHZ. 2023-03-17T19:22:31.13 0.1 undecidable manual S 17 8.7801 127 -0.27 96
IV.TRIF.CHZ. 2023-03-17T19:22:31.73 0.1 undecidable manual P 263 18.0708 110 0.26 95
IV.ATPI.EHZ. 2023-03-17T19:22:30.04 3.0 positive manual P -7.48 0
IV.FROS.CHZ. 2023-03-17T19:22:29.89 0.1 negative manual P 17 8.7801 127 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHN. ML:1.3 0.00032599999999999996 0.16 AML other m 2023-03-17T19:22:31.33
IV.FROS.CHE. ML:1.4 0.000412 0.52 AML other m 2023-03-17T19:22:31.24
IV.TRIF.CHN. ML:0.7 0.000042800000000000004 0.64 AML other m 2023-03-17T19:22:34.35
IV.TRIF.CHE. ML:0.7 0.00003985 0.94 AML other m 2023-03-17T19:22:34.97
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