Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 11-03-2021 and time 18:28:48 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude ML 1.0 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 11-03-2021 17:28:48 (UTC)
  • 11-03-2021 18:28:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.7950, 6.7540 at 12 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
Claviere TO 16 214 214
Cesana Torinese TO 18 967 1181
Sauze di Cesana TO 18 244 1425

Municipalities with at least 50000 inhabitants

An earthquake occurred to
77 Km W of Moncalieri (57294 inhabitants)
77 Km NW of Cuneo (56081 inhabitants)
79 Km W of Torino (890529 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 1.0 2021-03-11
17:28:48		 44.7953 6.7542 12 2021-07-12
16:55:03		 Bollettino Sismico Italiano INGV 88409501
Reviewed
Rev100 		ML 1.0 2021-03-11
17:28:48		 44.7973 6.7523 12 2021-03-11
17:37:55		 Sala Sismica INGV-Roma 88009211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-11 17:28:48 ± 0.06
Latitude 44.7953 ± 0.0036
Longitude 6.7542 ± 0.0063
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88409501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 507
Semi-minor axis of confidence ellipse (meter) 283
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.99015
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 88409501
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-23 13:28:41

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 88009211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-11 17:37:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MRVN.HHZ. 2021-03-11T17:30:40.77 3.0 undecidable manual Pn -0.61 0
IV.RONT.HHZ. 2021-03-11T17:30:36.13 3.0 undecidable manual Sg 14.88 0
IV.IMOL.HNZ. 2021-03-11T17:30:25.09 3.0 undecidable manual Sn 0.39 0
IV.VVLD.HHZ. 2021-03-11T17:30:19.21 3.0 undecidable manual Pn 6.38 0
IV.NDIM.HHZ. 2021-03-11T17:30:04.49 3.0 undecidable manual Sn -4.5 0
IV.PE3.EHZ. 2021-03-11T17:29:55.23 3.0 undecidable manual Pn 3.48 0
IV.NDIM.HNZ. 2021-03-11T17:29:39.93 3.0 negative manual Pg 6.37 0
IV.ZONE.HHZ. 2021-03-11T17:29:26.17 3.0 positive manual Pn -2.03 0
GU.ENR.HHZ. 2021-03-11T17:29:12.80 0.3 undecidable manual S 140 81.8514 91 0.1 68
GU.STV.HHE. 2021-03-11T17:29:10.96 0.3 undecidable manual S 143 75.9684 91 -0.17 66
RD.ORIF.BHZ. 2021-03-11T17:29:09.16 0.3 undecidable manual S 282 70.0743 91 -0.4 64
FR.SAOF.HHE.00 2021-03-11T17:29:06.98 0.6 undecidable manual P 145 109.9122 90 0.24 41
GU.GBOS.HHZ. 2021-03-11T17:29:06.34 0.3 undecidable manual P 125 105.6165 90 0.26 62
GU.RSP.HHE. 2021-03-11T17:29:05.82 0.3 undecidable manual S 45 55.9995 91 0.02 72
IV.MONC.HHZ. 2021-03-11T17:29:04.69 0.6 undecidable manual P 71 97.125 90 -0.09 43
GU.ENR.HHZ. 2021-03-11T17:29:02.64 0.3 undecidable manual P 140 81.8514 91 0.22 66
GU.PZZ.HHE. 2021-03-11T17:29:01.82 0.6 undecidable manual S 138 42.9237 91 -0.48 44
GU.BHB.HHZ. 2021-03-11T17:29:01.43 0.3 undecidable manual S 83 40.3263 91 -0.17 71
GU.STV.HHE. 2021-03-11T17:29:01.67 0.3 undecidable manual P 143 75.9684 91 0.15 68
RD.ORIF.BHZ. 2021-03-11T17:29:00.85 0.3 undecidable manual P 282 70.0743 91 0.24 67
MN.BNI.HHZ. 2021-03-11T17:28:58.43 0.3 undecidable manual S 348 29.0487 92 -0.19 72
GU.RSP.HHE. 2021-03-11T17:28:58.80 0.6 undecidable manual P 45 55.9995 91 0.36 45
GU.PZZ.HHE. 2021-03-11T17:28:56.14 0.3 undecidable manual P 138 42.9237 91 -0.28 69
GU.BHB.HHZ. 2021-03-11T17:28:55.95 0.3 undecidable manual P 83 40.3263 91 -0.07 73
GU.RRL.HHZ. 2021-03-11T17:28:54.43 0.3 undecidable manual S 11 14.1747 107 -0.25 74
MN.BNI.HHZ. 2021-03-11T17:28:54.47 0.1 undecidable manual P 348 29.0487 92 0.17 98
GU.RRL.HHZ. 2021-03-11T17:28:52.19 0.1 undecidable manual P 11 14.1747 107 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.BNI.HNN. ML:1.0 0.00004306529 1.728 AML other m 2021-03-11T17:28:58.07
MN.BNI.HHE. ML:0.7 0.0000250795505 1.7952 AML other m 2021-03-11T17:28:59.95
GU.BHB.HHE. ML:1.3 0.00006991472 0.0992 AML other m 2021-03-11T17:29:01.49
RD.ORIF.BHE. ML:1.0 0.0000125188175 0.1664 AML other m 2021-03-11T17:29:09.50
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