Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 11-02-2023 and time 07:22:02 (UTC) in region 5 km W Elva (CN)

A magnitude ML 0.7 earthquake occured in region: 5 km W Elva (CN), on

  • 11-02-2023 07:22:02 (UTC)
  • 11-02-2023 08:22:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5360, 7.0300 at 11 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.

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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
Elva CN 5 97 97
Bellino CN 5 109 206
Prazzo CN 6 170 376
Casteldelfino CN 7 157 533
Acceglio CN 7 162 695
Stroppo CN 8 103 798
Pontechianale CN 10 179 977
Canosio CN 10 80 1057
Marmora CN 10 68 1125
Macra CN 13 59 1184
Celle di Macra CN 13 100 1284
Sampeyre CN 14 1022 2306
Argentera CN 18 83 2389
San Damiano Macra CN 19 430 2819

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Cuneo (56081 inhabitants)
73 Km SW of Moncalieri (57294 inhabitants)
79 Km SW of Torino (890529 inhabitants)
100 Km NW of Sanremo (54807 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 0.7 2023-02-11
07:22:02		 44.536 7.03 11 2023-02-11
07:26:39		 Sala Sismica INGV-Roma 114335941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-11 07:22:02 ± 0.19
Latitude 44.5360 ± 0.0072
Longitude 7.0300 ± 0.0202
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 114335941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1710
Semi-minor axis of confidence ellipse (meter) 22
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
Circular confidence region, given by single value of horizontal uncertainty (meter) 1710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 190
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.74374
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 114335941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-11 07:26:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.MGRO.HHE. 2023-02-11T07:22:27.30 0.6 undecidable manual S 131 82.5507 50 0.66 38
FR.SAOF.HHE.00 2023-02-11T07:22:24.74 0.6 undecidable manual S 146 73.7706 50 0.43 42
GU.GBOS.HHE. 2023-02-11T07:22:23.67 0.6 undecidable manual S 117 72.0723 50 -0.16 44
GU.ENR.HHZ. 2023-02-11T07:22:16.56 0.3 undecidable manual S 138 45.8208 50 -0.29 68
GU.MGRO.HHE. 2023-02-11T07:22:16.76 0.1 undecidable manual P 131 82.5507 50 0.5 80
GU.RRL.HHZ. 2023-02-11T07:22:16.71 0.6 undecidable manual S 336 46.7199 50 -0.36 44
GU.GBOS.HHE. 2023-02-11T07:22:14.48 0.1 undecidable manual P 117 72.0723 50 -0.16 88
FR.SAOF.HHE.00 2023-02-11T07:22:14.63 0.1 undecidable manual P 146 73.7706 50 -0.28 86
GU.RSP.HHE. 2023-02-11T07:22:14.73 0.1 undecidable manual P 15 70.374 50 0.35 85
GU.BHB.HHZ. 2023-02-11T07:22:14.56 0.6 undecidable manual S 29 37.9287 50 -0.18 47
GU.STV.HHZ. 2023-02-11T07:22:14.91 0.3 undecidable manual S 144 39.9267 50 -0.35 68
GU.ENR.HHZ. 2023-02-11T07:22:10.28 1.0 undecidable manual P 138 45.8208 50 -0.33 22
GU.RRL.HHZ. 2023-02-11T07:22:10.74 0.6 positive manual P 336 46.7199 50 0 48
GU.BHB.HHZ. 2023-02-11T07:22:09.38 0.1 negative manual P 29 37.9287 50 -0.01 97
GU.STV.HHZ. 2023-02-11T07:22:09.93 0.6 positive manual P 144 39.9267 50 0.24 46
GU.PZZ.HHZ. 2023-02-11T07:22:06.31 0.6 undecidable manual S 116 7.4814 145 -0.33 48
GU.PZZ.HHZ. 2023-02-11T07:22:04.83 0.1 positive manual P 116 7.4814 145 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HNE. ML:1.1 0.000044974515 1.8912 AML other m 2023-02-11T07:22:13.94
GU.BHB.HHE. ML:0.6 0.00001681024 0.1216 AML other m 2023-02-11T07:22:15.45
GU.STV.HHE. ML:0.5 0.0000081904785 0.08 AML other m 2023-02-11T07:22:15.50
GU.STV.HHN. ML:0.5 0.000010828308500000001 0.08 AML other m 2023-02-11T07:22:15.36
GU.ENR.HHE. ML:1.0 0.00002762042 0.0608 AML other m 2023-02-11T07:22:17.65
GU.ENR.HHN. ML:0.9 0.000022840365 0.08 AML other m 2023-02-11T07:22:18.02
GU.RRL.HHE. ML:0.2 0.00000629195175 0.3776 AML other m 2023-02-11T07:22:16.89
GU.RRL.HHN. ML:0.6 0.000010728263 0.8 AML other m 2023-02-11T07:22:17.04
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