Earthquake with magnitude of ML 1.9 on date 03-12-2020 and time 16:38:45 (Italy) in region 9 km NE Courmayeur (AO)

A magnitude ML 1.9 earthquake occured in region: 9 km NE Courmayeur (AO), on

  • 03-12-2020 15:38:45 (UTC)
  • 03-12-2020 16:38:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.86, 7.04 at 10 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
Courmayeur AO 9 2807 2807
Morgex AO 12 2104 4911
Pré-Saint-Didier AO 12 1050 5961
Saint-Rhémy-en-Bosses AO 12 338 6299
La Salle AO 13 2087 8386
Saint-Oyen AO 14 203 8589
Etroubles AO 16 501 9090
La Thuile AO 18 761 9851
Avise AO 19 305 10156
Allein AO 19 229 10385
Saint-Nicolas AO 19 311 10696

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 1.9 2020-12-03
15:38:45
45.86 7.04 10 2021-02-26
14:56:10
Bollettino Sismico Italiano INGV 85333111
Reviewed
Rev100
ML 1.5 2020-12-03
15:38:45
45.86 7.04 11 2020-12-03
15:49:41
Sala Sismica INGV-Roma 85177151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-03 15:38:45 ± 0.17
Latitude 45.86 ± 0.01
Longitude 7.04 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85333111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1148
Semi-minor axis of confidence ellipse (meter) 1082
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 299
Circular confidence region, given by single value of horizontal uncertainty (meter) 1150
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.24646
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 13
Type of magnitude ML
Reference to an origin 85333111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 10:58:31

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 85177151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-03 15:49:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ZCCA.HHZ. 2020-12-03T15:40:27.23 3.0 undecidable manual Sg 13.1 0
IT.FIE.HGZ. 2020-12-03T15:40:26.13 3.0 negative manual P 0.05 0
IV.MNTV.HNZ. 2020-12-03T15:40:19.79 3.0 undecidable manual Sg 16.459999 0
IV.ARRO.EHZ. 2020-12-03T15:40:13.24 3.0 undecidable manual Pn 9.16 0
IV.ASSB.HHZ. 2020-12-03T15:40:05.06 3.0 undecidable manual P 5.82 0
IV.EL6.EHZ. 2020-12-03T15:40:05.91 3.0 positive manual P 5.26 0
IV.VISG.HHZ. 2020-12-03T15:39:55.59 3.0 undecidable manual Pg 15.28 0
IV.EUCT.HNZ. 2020-12-03T15:39:18.66 3.0 negative manual Pg 4.76 0
GU.RSP.HHZ. 2020-12-03T15:39:10.06 0.3 undecidable manual S 167 0.732 50 0.09 67
RD.ORIF.BHZ. 2020-12-03T15:39:10.26 0.6 undecidable manual P 221 1.2465 50 1.81 18
GU.SATI.HHZ. 2020-12-03T15:39:04.64 0.3 undecidable manual S 89 0.5765 50 -0.73 57
CH.GIMEL.HHE. 2020-12-03T15:39:02.56 0.3 undecidable manual P 322 0.858 50 0.76 54
GU.CIRO.HHZ. 2020-12-03T15:39:01.25 0.6 undecidable manual S 125 0.4515 50 -0.42 44
MN.BNI.HHZ. 2020-12-03T15:39:00.54 0.6 undecidable manual P 197 0.8499 50 -1.12 30
GU.RSP.HHZ. 2020-12-03T15:39:00.03 0.3 undecidable manual P 167 0.732 50 0.38 63
GU.LSD.HHZ. 2020-12-03T15:38:59.71 0.6 undecidable manual S 171 0.4092 50 -0.69 40
GU.TRAV.HHZ. 2020-12-03T15:38:57.79 0.1 undecidable manual P 125 0.6052 50 0.31 87
CH.DIX.HHZ. 2020-12-03T15:38:57.28 0.6 undecidable manual S 50 0.3354 50 -0.94 37
GU.SATI.HHZ. 2020-12-03T15:38:57.63 0.3 undecidable manual P 89 0.5765 50 0.63 60
GU.CIRO.HHZ. 2020-12-03T15:38:55.05 0.1 undecidable manual P 125 0.4515 50 0.19 92
GU.LSD.HHZ. 2020-12-03T15:38:54.22 0.1 undecidable manual P 171 0.4092 50 0.1 95
CH.DIX.HHZ. 2020-12-03T15:38:52.68 0.1 positive manual P 50 0.3354 50 -0.18 94
IV.MRGE.HHZ. 2020-12-03T15:38:50.31 0.6 undecidable manual S 171 0.0944 133 -0.23 49
GU.REMY.HHZ. 2020-12-03T15:38:50.47 0.6 undecidable manual S 107 0.0854 136 0.19 49
GU.BLANC.HHZ. 2020-12-03T15:38:49.39 0.3 undecidable manual S 256 0.0764 139 -0.65 66
GU.REMY.HHZ. 2020-12-03T15:38:48.62 0.1 negative manual P 107 0.0854 136 0.34 96
IV.MRGE.HHZ. 2020-12-03T15:38:48.56 0.1 positive manual P 171 0.0944 133 0.13 100
GU.BLANC.HHZ. 2020-12-03T15:38:47.92 0.1 positive manual P 256 0.0764 139 -0.22 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BLANC.HHN. ML:2.3 0.0030177835 0.4352 AML other m 2020-12-03T15:38:49.66
GU.BLANC.HHE. ML:2.4 0.0037907775 0.1152 AML other m 2020-12-03T15:38:49.61
IV.MRGE.HHE. ML:2.4 0.003328957 0.2048 AML other m 2020-12-03T15:38:50.42
GU.REMY.HHN. ML:1.8 0.0007659565 0.2432 AML other m 2020-12-03T15:38:50.67
GU.REMY.HHE. ML:1.9 0.001162758 0.1024 AML other m 2020-12-03T15:38:50.54
IV.MRGE.HHN. ML:1.8 0.00085521595 0.0512 AML other m 2020-12-03T15:38:50.73
CH.DIX.HHE. ML:2.2 0.0006694292 0.2432 AML other m 2020-12-03T15:38:57.50
CH.DIX.HHN. ML:2 0.00041197215 0.192 AML other m 2020-12-03T15:38:57.73
GU.LSD.HHE. ML:1.9 0.00021921915 0.1408 AML other m 2020-12-03T15:38:59.81
GU.LSD.HHN. ML:1.5 8.742576E-5 0.128 AML other m 2020-12-03T15:38:59.80
GU.CIRO.HHN. ML:1.2 4.160674E-5 0.0896 AML other m 2020-12-03T15:39:01.38
GU.CIRO.HHE. ML:1.1 2.7922255E-5 0.8832 AML other m 2020-12-03T15:39:01.35
RD.ORIF.BHN. ML:1.8 3.8799715E-5 1.2288 AML other m 2020-12-03T15:39:27.05
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