Earthquake with magnitude of ML 1.1 on date 06-12-2019 and time 12:11:23 (UTC) in region 4 km NW Valgrisenche (AO)

A magnitude ML 1.1 earthquake occured in region: 4 km NW Valgrisenche (AO), on

  • 06-12-2019 12:11:23 (UTC)
  • 06-12-2019 13:11:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.66, 7.05 at 9 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
Valgrisenche AO 4 196 196
Rhêmes-Saint-Georges AO 8 194 390
Avise AO 9 305 695
La Salle AO 10 2087 2782
La Thuile AO 10 761 3543
Arvier AO 10 873 4416
Morgex AO 11 2104 6520
Saint-Nicolas AO 11 311 6831
Introd AO 11 658 7489
Rhêmes-Notre-Dame AO 12 89 7578
Pré-Saint-Didier AO 13 1050 8628
Villeneuve AO 13 1289 9917
Valsavarenche AO 14 161 10078
Saint-Pierre AO 15 3165 13243
Aymavilles AO 15 2086 15329
Courmayeur AO 16 2807 18136
Sarre AO 17 4927 23063
Jovençan AO 18 736 23799
Gressan AO 20 3387 27186

Municipalities with at least 50000 inhabitants

An earthquake occurred to
82 Km NW of Torino (890529 inhabitants)
89 Km NW of Moncalieri (57294 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.1 2019-12-06
12:11:23
45.66 7.05 9 2019-12-06
12:18:59
Sala Sismica INGV-Roma 74378701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-06 12:11:23 ± 0.18
Latitude 45.66 ± 0.01
Longitude 7.05 ± 0.03
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74378701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2086
Semi-minor axis of confidence ellipse (meter) 480
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 2090
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 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.83997
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 74378701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-06 12:18:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2019-12-06T12:12:15.10 3.0 undecidable manual Sn 0 0
GU.RRL.HHE. 2019-12-06T12:11:48.02 1.0 undecidable manual S 194 0.7635 50 -0.69 19
GU.RSP.HHZ. 2019-12-06T12:11:41.09 0.6 undecidable manual S 164 0.5351 50 -0.86 37
GU.TRAV.HHZ. 2019-12-06T12:11:41.32 0.6 undecidable manual S 107 0.5081 50 0.17 47
CH.DIX.HHE. 2019-12-06T12:11:39.72 0.3 undecidable manual S 31 0.4856 50 -0.76 59
GU.BHB.HHE. 2019-12-06T12:11:39.60 0.1 undecidable manual P 170 0.84 50 0.42 82
GU.RRL.HHE. 2019-12-06T12:11:38.25 1.0 undecidable manual P 194 0.7635 50 0.37 21
GU.TRAV.HHZ. 2019-12-06T12:11:34.20 0.6 undecidable manual P 107 0.5081 50 0.68 40
GU.RSP.HHZ. 2019-12-06T12:11:34.44 0.6 negative manual P 164 0.5351 50 0.47 43
CH.DIX.HHE. 2019-12-06T12:11:33.41 0.3 undecidable manual P 31 0.4856 50 0.28 69
GU.LSD.HHZ. 2019-12-06T12:11:31.23 0.3 undecidable manual S 164 0.2104 110 -0.5 69
GU.LSD.HHZ. 2019-12-06T12:11:28.25 0.6 positive manual P 164 0.2104 110 0.18 49
IV.MRGE.HHZ. 2019-12-06T12:11:28.05 0.3 undecidable manual S 3 0.1079 126 -0.14 76
GU.BLANC.HHE. 2019-12-06T12:11:27.57 0.6 undecidable manual P 336 0.1996 111 -0.28 48
IV.MRGE.HHZ. 2019-12-06T12:11:26.24 0.1 positive manual P 3 0.1079 126 0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRGE.HHE. ML:1.1 0.000158 0.38 AML other m 2019-12-06T12:11:28.02
IV.MRGE.HHN. ML:1.2 0.0001925 0.64 AML other m 2019-12-06T12:11:28.33
GU.LSD.HHE. ML:1 6.68E-5 0.28 AML other m 2019-12-06T12:11:31.48
GU.LSD.HHN. ML:0.9 5.005E-5 0.64 AML other m 2019-12-06T12:11:31.67
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