Earthquake with magnitude of ML 0.8 on date 01-02-2023 and time 22:34:22 (UTC) in region 2 km SE Gravere (TO)

A magnitude ML 0.8 earthquake occured in region: 2 km SE Gravere (TO), on

  • 01-02-2023 22:34:22 (UTC)
  • 01-02-2023 23:34:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.1170, 7.0400 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
Gravere TO 2 692 692
Susa TO 2 6466 7158
Meana di Susa TO 2 826 7984
Mompantero TO 3 659 8643
Giaglione TO 3 631 9274
Chiomonte TO 4 916 10190
Venaus TO 5 907 11097
Mattie TO 6 687 11784
Usseaux TO 8 186 11970
Novalesa TO 8 534 12504
Exilles TO 9 273 12777
Bussoleno TO 9 6094 18871
Fenestrelle TO 9 544 19415
Moncenisio TO 11 36 19451
Chianocco TO 11 1675 21126
San Giorio di Susa TO 11 1024 22150
Bruzolo TO 13 1524 23674
Salbertrand TO 13 596 24270
Pragelato TO 13 776 25046
San Didero TO 14 551 25597
Roure TO 15 848 26445
Villar Focchiardo TO 15 2042 28487
Borgone Susa TO 16 2229 30716
Sauze d'Oulx TO 17 1109 31825
Massello TO 18 51 31876
Sant'Antonino di Susa TO 19 4306 36182
Oulx TO 19 3307 39489
Usseglio TO 19 209 39698
Salza di Pinerolo TO 20 75 39773
Vaie TO 20 1458 41231

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km W of Torino (890529 inhabitants)
52 Km W of Moncalieri (57294 inhabitants)
90 Km NW of Cuneo (56081 inhabitants)
95 Km W of Asti (76202 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 0.8 2023-02-01
22:34:22
45.1167 7.0397 10 2023-02-01
22:46:47
Sala Sismica INGV-Roma 113966451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-01 22:34:22 ± 0.17
Latitude 45.1167 ± 0.0135
Longitude 7.0397 ± 0.0140
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 113966451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1620
Semi-minor axis of confidence ellipse (meter) 890
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
Circular confidence region, given by single value of horizontal uncertainty (meter) 1620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.16188
Epicentral distance of station farthest from the epicenter (degree) 0.34894
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 113966451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-01 22:46:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.LSD.HHZ. 2023-02-01T22:34:34.92 0.3 undecidable manual S 11 38.7279 50 -0.58 68
MN.BNI.HHZ. 2023-02-01T22:34:32.55 0.1 undecidable manual S 256 29.2485 50 -0.41 97
GU.RRL.HHE. 2023-02-01T22:34:32.60 0.3 undecidable manual S 222 29.2485 50 -0.36 74
GU.LSD.HHZ. 2023-02-01T22:34:30.49 0.1 undecidable manual P 11 38.7279 50 0.5 94
GU.RSP.HHZ. 2023-02-01T22:34:29.18 0.1 undecidable manual S 79 17.9709 119 -0.41 99
MN.BNI.HHZ. 2023-02-01T22:34:29.01 0.1 undecidable manual P 256 29.2485 50 0.49 96
GU.BHB.HHZ. 2023-02-01T22:34:29.51 0.3 undecidable manual P 151 35.742 50 -0.03 78
GU.RRL.HHE. 2023-02-01T22:34:28.87 0.6 undecidable manual P 222 29.2485 50 0.34 49
GU.RSP.HHZ. 2023-02-01T22:34:26.96 0.1 undecidable manual P 79 17.9709 119 0.38 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RSP.HHE. ML:0.6 0.000034099999999999995 0.1 AML other m 2023-02-01T22:34:29.57
GU.RSP.HHN. ML:0.5 0.000024849999999999998 0.08 AML other m 2023-02-01T22:34:29.62
GU.LSD.HHE. ML:1.1 0.000043349999999999997 0.3 AML other m 2023-02-01T22:34:35.25
GU.LSD.HHN. ML:0.9 0.000030935 0.3 AML other m 2023-02-01T22:34:35.44
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