Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 02-04-2023 and time 18:04:46 (UTC) in region 3 km W Bellino (CN)

A magnitude ML 1.4 earthquake occured in region: 3 km W Bellino (CN), on

  • 02-04-2023 18:04:46 (UTC)
  • 02-04-2023 20:04:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5920, 6.9850 at 11 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
Bellino CN 3 109 109
Pontechianale CN 5 179 288
Casteldelfino CN 7 157 445
Elva CN 10 97 542
Acceglio CN 13 162 704
Prazzo CN 13 170 874
Stroppo CN 15 103 977
Sampeyre CN 16 1022 1999
Canosio CN 17 80 2079
Marmora CN 17 68 2147
Crissolo CN 18 168 2315
Macra CN 19 59 2374
Oncino CN 19 76 2450
Celle di Macra CN 20 100 2550
Ostana CN 20 83 2633

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km W of Cuneo (56081 inhabitants)
72 Km SW of Moncalieri (57294 inhabitants)
77 Km SW 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 1.4 2023-04-02
18:04:46		 44.592 6.9847 11 2024-03-01
17:18:03		 Bollettino Sismico Italiano INGV 116380541
Reviewed
Rev100 		ML 1.4 2023-04-02
18:04:46		 44.5893 6.9832 11 2023-04-02
18:36:39		 Sala Sismica INGV-Roma 115978471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-02 18:04:46 ± 0.15
Latitude 44.5920 ± 0.0072
Longitude 6.9847 ± 0.0139
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116380541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1229
Semi-minor axis of confidence ellipse (meter) 321
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 1230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.12680
Epicentral distance of station farthest from the epicenter (degree) 0.84896
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 116380541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-09 15:19:41

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 115978471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-02 18:36:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
FR.SAOF.HHZ.00 2023-04-02T18:05:10.25 0.6 undecidable manual S 146 80.9523 50 -0.15 43
GU.GBOS.HHZ. 2023-04-02T18:05:09.84 0.6 undecidable manual S 120 78.1662 50 0.2 43
MN.BNI.HHZ. 2023-04-02T18:05:03.47 0.6 undecidable manual S 335 56.3991 50 -0.39 43
GU.ENR.HHN. 2023-04-02T18:05:02.59 0.6 undecidable manual S 139 52.9026 50 -0.32 44
RD.ORIF.BHZ. 2023-04-02T18:05:02.44 0.1 undecidable manual P 293 94.239 50 0.17 84
FR.SAOF.HHZ.00 2023-04-02T18:05:00.72 0.1 undecidable manual P 146 80.9523 50 0.49 80
GU.STV.HHZ. 2023-04-02T18:05:00.67 0.6 undecidable manual S 145 47.0196 50 -0.68 40
GU.GBOS.HHZ. 2023-04-02T18:05:00.00 0.1 undecidable manual P 120 78.1662 50 0.21 86
GU.BHB.HHZ. 2023-04-02T18:04:57.85 0.6 undecidable manual S 39 34.8429 50 -0.23 46
MN.BNI.HHZ. 2023-04-02T18:04:56.04 0.3 undecidable manual P 335 56.3991 50 -0.41 64
GU.STV.HHZ. 2023-04-02T18:04:55.00 0.1 undecidable manual P 145 47.0196 50 0 95
GU.ENR.HHN. 2023-04-02T18:04:55.96 0.1 undecidable manual P 139 52.9026 50 0.06 93
GU.BHB.HHZ. 2023-04-02T18:04:53.45 0.1 undecidable manual P 39 34.8429 50 0.34 91
GU.PZZ.HHZ. 2023-04-02T18:04:52.23 0.3 undecidable manual S 132 14.0748 128 -0.29 71
GU.PZZ.HHZ. 2023-04-02T18:04:49.94 0.1 undecidable manual P 132 14.0748 128 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHE. ML:1.5 0.0002875 0.58 AML other m 2023-04-02T18:04:52.66
GU.PZZ.HHN. ML:1.4 0.0002175 0.1 AML other m 2023-04-02T18:04:52.65
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