Earthquake with magnitude of ML 1.2 on date 29-07-2020 and time 16:10:46 (UTC) in region 4 km N Chiusdino (SI)

A magnitude ML 1.2 earthquake occured in region: 4 km N Chiusdino (SI), on

  • 29-07-2020 16:10:46 (UTC)
  • 29-07-2020 18:10:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1950, 11.0940 at 10 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
Radicondoli SI 9 914 2817
Monticiano SI 9 1571 4388
Montieri GR 9 1204 5592
Sovicille SI 15 10116 15708
Castelnuovo di Val di Cecina PI 15 2231 17939
Casole d'Elsa SI 17 3897 21836

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SW of Siena (53903 inhabitants)
48 Km N of Grosseto (82087 inhabitants)
63 Km S of Scandicci (50609 inhabitants)
65 Km S of Firenze (382808 inhabitants)
71 Km W of Arezzo (99543 inhabitants)
75 Km SE of Livorno (159219 inhabitants)
76 Km S of Prato (191150 inhabitants)
81 Km SE of Pisa (89158 inhabitants)
84 Km S of Pistoia (90315 inhabitants)
87 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 1.2 2020-07-29
16:10:46
43.1948 11.0943 10 2020-07-29
16:22:25
Sala Sismica INGV-Roma 81458731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-29 16:10:46 ± 0.19
Latitude 43.1948 ± 0.0144
Longitude 11.0943 ± 0.0185
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81458731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1968
Semi-minor axis of confidence ellipse (meter) 891
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 136
Circular confidence region, given by single value of horizontal uncertainty (meter) 1970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.53
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.87954
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 81458731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-29 16:22:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT05.EHZ. 2020-07-29T16:12:32.34 3.0 undecidable manual Sn 0.81 0
IV.CELI.HHZ. 2020-07-29T16:12:29.72 3.0 undecidable manual Pg 17.98 0
IV.HVZN.HNZ. 2020-07-29T16:12:25.14 3.0 negative manual Pn -0.96 0
ST.ZIAN.EHZ. 2020-07-29T16:12:19.41 3.0 undecidable manual Sg 4.08 0
XK.SELL.HHZ. 2020-07-29T16:12:17.65 3.0 positive manual Pn 0.89 0
IV.SENA.HHZ. 2020-07-29T16:12:17.25 3.0 undecidable manual Sg 2.85 0
IV.LADO.EHZ. 2020-07-29T16:12:13.44 3.0 negative manual Pn -3.05 0
ST.GAGG.HHZ. 2020-07-29T16:12:08.17 3.0 undecidable manual Sn -1.91 0
IV.MBAL.EHZ. 2020-07-29T16:12:02.94 3.0 undecidable manual Sg 2.22 0
IV.VOBA.HNZ. 2020-07-29T16:12:02.74 3.0 undecidable manual Sg 2.7 0
GU.MGRO.HHZ. 2020-07-29T16:12:01.49 3.0 undecidable manual Sn 0.44 0
IV.CGL.BHZ. 2020-07-29T16:11:56.06 3.0 undecidable manual Pg 5.54 0
IV.MRB1.HNZ. 2020-07-29T16:11:50.88 3.0 undecidable manual Pg 6.9 0
NI.VINO.HHZ. 2020-07-29T16:11:45.80 3.0 positive manual Pg 4.42 0
MN.TRI.HHZ. 2020-07-29T16:11:40.08 3.0 undecidable manual Pn 2.31 0
ST.GAGG.HHZ. 2020-07-29T16:11:33.61 3.0 undecidable manual Pn -0.02 0
IV.ZONE.HHZ. 2020-07-29T16:11:32.70 3.0 undecidable manual Pg 2.31 0
IV.IMOL.HNZ. 2020-07-29T16:11:10.37 3.0 negative manual P -1.11 0
IV.CASP.HHZ. 2020-07-29T16:11:01.25 0.1 undecidable manual S 203 48.5181 50 -0.53 86
IV.CELB.HHZ. 2020-07-29T16:11:01.08 0.1 undecidable manual P 236 87.246 50 -0.03 90
IV.SEI.HHZ. 2020-07-29T16:11:01.99 0.1 undecidable manual P 12 97.6245 50 -0.71 73
IV.MAGO.CHZ. 2020-07-29T16:10:58.15 0.1 undecidable manual S 284 36.3414 50 -0.38 92
IV.CSNT.HHZ. 2020-07-29T16:10:57.92 0.3 undecidable manual S 27 34.6431 50 -0.16 72
IV.CASP.HHZ. 2020-07-29T16:10:55.71 0.1 undecidable manual P 203 48.5181 50 0.58 85
IV.MAGO.CHZ. 2020-07-29T16:10:54.25 0.1 undecidable manual P 284 36.3414 50 1 73
IV.CSNT.HHZ. 2020-07-29T16:10:53.35 0.1 undecidable manual P 27 34.6431 50 0.36 93
IV.TRIF.CHZ. 2020-07-29T16:10:52.74 0.1 undecidable manual S 240 17.871 118 -0.36 95
IV.TRIF.CHZ. 2020-07-29T16:10:50.50 0.1 negative manual P 240 17.871 118 0.38 95
IV.FROS.CHZ. 2020-07-29T16:10:49.40 0.3 undecidable manual S 72 5.2947 151 -0.45 72
IV.FROS.CHZ. 2020-07-29T16:10:48.48 0.1 positive manual P 72 5.2947 151 0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:1.4 0.0002275 0.64 AML other m 2020-07-29T16:10:53.46
IV.TRIF.CHE. ML:1.5 0.000273 0.26 AML other m 2020-07-29T16:10:53.25
IV.CSNT.HHE. ML:0.7 0.000019450000000000002 0.76 AML other m 2020-07-29T16:10:58.60
IV.CSNT.HHN. ML:0.7 0.00002205 0.68 AML other m 2020-07-29T16:10:59.63
IV.CASP.HHN. ML:1.1 0.000037099999999999994 0.24 AML other m 2020-07-29T16:11:01.60
IV.CASP.HHE. ML:1.2 0.0000376 0.66 AML other m 2020-07-29T16:11:01.95
IV.CELB.HHE. ML:1.4 0.000032 1.94 AML other m 2020-07-29T16:11:02.98
IV.CELB.HHN. ML:1.2 0.000018950000000000003 1 AML other m 2020-07-29T16:11:15.92
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