Earthquake with magnitude of ML 1.2 on date 15-04-2020 and time 11:46:11 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude ML 1.2 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 15-04-2020 09:46:11 (UTC)
  • 15-04-2020 11:46:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.46, 7.1 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ceresole Reale TO 11 156 156
Rhêmes-Notre-Dame AO 13 89 245
Noasca TO 17 137 382
Groscavallo TO 18 204 586
Valsavarenche AO 18 161 747
Balme TO 20 115 862
Valgrisenche AO 20 196 1058

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km NW of Torino (890529 inhabitants)
69 Km NW of Moncalieri (57294 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 1.2 2020-04-15
09:46:11
45.46 7.09 9 2020-07-18
21:08:42
Bollettino Sismico Italiano INGV 80914711
Reviewed
Rev100
ML 1.2 2020-04-15
09:46:11
45.46 7.08 4 2020-04-15
09:58:40
Sala Sismica INGV-Roma 78234321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-15 09:46:11 ± 0.16
Latitude 45.46 ± 0.01
Longitude 7.09 ± 0.02
Depth (km) 9 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80914711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1320
Semi-minor axis of confidence ellipse (meter) 880
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 263
Circular confidence region, given by single value of horizontal uncertainty (meter) 1320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.31476
Epicentral distance of station farthest from the epicenter (degree) 0.94789
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:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 80914711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-09 21:39:32

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 78234321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-15 09:58:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BHB.HHE. 2020-04-15T09:46:32.11 0.3 undecidable manual S 169 0.6313 50 -1 53
GU.PZZ.HHE. 2020-04-15T09:46:30.12 0.3 undecidable manual P 179 0.9479 50 0.76 55
GU.TRAV.HHZ. 2020-04-15T09:46:27.68 0.6 undecidable manual S 83 0.4605 50 -0.38 46
GU.BLANC.HHE. 2020-04-15T09:46:26.31 0.3 undecidable manual S 344 0.4047 50 -0.09 75
GU.SATI.HHZ. 2020-04-15T09:46:25.38 0.3 undecidable manual P 52 0.6844 50 0.53 64
GU.BHB.HHE. 2020-04-15T09:46:24.00 0.3 undecidable manual P 169 0.6313 50 0.06 72
GU.CIRO.HHZ. 2020-04-15T09:46:24.83 0.6 undecidable manual S 66 0.3624 50 -0.32 48
IV.MRGE.HHZ. 2020-04-15T09:46:23.04 0.3 undecidable manual S 356 0.3148 50 -0.71 64
GU.RRL.HHZ. 2020-04-15T09:46:22.93 0.3 undecidable manual P 202 0.5756 50 -0.06 72
GU.TRAV.HHZ. 2020-04-15T09:46:21.28 0.1 undecidable manual P 83 0.4605 50 0.26 95
GU.BLANC.HHE. 2020-04-15T09:46:20.04 0.3 undecidable manual P 344 0.4047 50 -0.03 76
GU.CIRO.HHZ. 2020-04-15T09:46:19.45 0.1 undecidable manual P 66 0.3624 50 0.11 100
IV.MRGE.HHZ. 2020-04-15T09:46:18.85 0.1 undecidable manual P 356 0.3148 50 0.32 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRGE.HHN. ML:1.3 8.265E-5 1.94 AML other m 2020-04-15T09:46:24.01
IV.MRGE.HHE. ML:1.2 5.905E-5 1.12 AML other m 2020-04-15T09:46:25.07
GU.TRAV.HHE. ML:1.1 3.375E-5 0.44 AML other m 2020-04-15T09:46:29.33
GU.TRAV.HHN. ML:1.2 4.045E-5 0.34 AML other m 2020-04-15T09:46:29.57
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download