INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.7 on date 09-02-2019 and time 11:47:02 (Italy) in region 9 km W Saint Rhémy en Bosses (AO)

A magnitude ML 1.7 earthquake occured in region: 9 km W Saint Rhémy en Bosses (AO), on

  • 09-02-2019 10:47:02 (UTC)
  • 09-02-2019 11:47:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.85, 7.08 at 11 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
Saint-Rhémy-en-Bosses AO 9 338 338
Courmayeur AO 10 2807 3145
Morgex AO 11 2104 5249
Saint-Oyen AO 11 203 5452
La Salle AO 11 2087 7539
Pré-Saint-Didier AO 12 1050 8589
Etroubles AO 13 501 9090
Allein AO 16 229 9319
Saint-Nicolas AO 16 311 9630
Avise AO 16 305 9935
Arvier AO 18 873 10808
La Thuile AO 18 761 11569
Ollomont AO 18 157 11726
Doues AO 18 510 12236
Gignod AO 19 1710 13946
Villeneuve AO 19 1289 15235
Saint-Pierre AO 19 3165 18400
Roisan AO 19 1036 19436
Introd AO 20 658 20094
Valpelline AO 20 657 20751

Municipalities with at least 50000 inhabitants

An earthquake occurred to
98 Km NW of Torino (890529 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 1.7 2019-02-09
10:47:02
45.85 7.08 11 2019-02-09
10:56:30
Sala Sismica INGV-Roma 65345241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-09 10:47:02 ± 0.1
Latitude 45.85 ± 0.01
Longitude 7.08 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65345241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 648
Semi-minor axis of confidence ellipse (meter) 504
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 297
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 0.95058
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 65345241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-09 10:56:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.RRL.HHE. 2019-02-09T10:47:32.57 0.6 undecidable manual S 192 0.9506 50 -0.24 41
MN.BNI.HHE. 2019-02-09T10:47:30.14 0.6 undecidable manual S 200 0.8454 50 0.43 41
CH.GIMEL.HHE. 2019-02-09T10:47:30.64 0.6 undecidable manual S 321 0.8849 50 -0.23 42
GU.RSP.HHE. 2019-02-09T10:47:25.88 0.3 undecidable manual S 169 0.7132 50 0.08 67
CH.MMK.HHE. 2019-02-09T10:47:23.47 0.3 undecidable manual S 72 0.6466 50 -0.34 65
GU.TRAV.HHZ. 2019-02-09T10:47:21.60 0.3 undecidable manual S 126 0.5756 50 -0.1 69
GU.SATI.HHE. 2019-02-09T10:47:20.72 0.3 undecidable manual S 87 0.5504 50 -0.23 68
CH.GIMEL.HHE. 2019-02-09T10:47:19.03 0.1 undecidable manual P 321 0.8849 50 0.32 82
GU.RRL.HHE. 2019-02-09T10:47:19.64 0.6 undecidable manual P 192 0.9506 50 -0.19 42
GU.CIRO.HHZ. 2019-02-09T10:47:17.06 0.3 undecidable manual S 126 0.4218 50 -0.09 71
MN.BNI.HHE. 2019-02-09T10:47:17.64 0.1 undecidable manual P 200 0.8454 50 -0.4 82
GU.RSP.HHE. 2019-02-09T10:47:16.01 0.1 undecidable manual P 169 0.7132 50 0.24 87
CH.MMK.HHE. 2019-02-09T10:47:15.04 0.1 undecidable manual P 72 0.6466 50 0.41 85
GU.TRAV.HHZ. 2019-02-09T10:47:13.89 0.1 undecidable manual P 126 0.5756 50 0.48 85
CH.DIX.HHZ. 2019-02-09T10:47:13.76 0.6 undecidable manual S 45 0.3238 50 -0.49 45
GU.SATI.HHE. 2019-02-09T10:47:12.79 1.0 undecidable manual P 87 0.5504 50 -0.19 23
GU.CIRO.HHZ. 2019-02-09T10:47:11.11 0.3 undecidable manual P 126 0.4218 50 0.32 68
CH.DIX.HHZ. 2019-02-09T10:47:08.99 0.1 undecidable manual P 45 0.3238 50 -0.12 97
IV.MRGE.HHZ. 2019-02-09T10:47:06.46 0.3 undecidable manual S 189 0.0809 140 -0.45 71
GU.REMY.HHZ. 2019-02-09T10:47:06.42 0.3 undecidable manual S 103 0.0558 150 0.09 77
IV.MRGE.HHZ. 2019-02-09T10:47:04.69 0.1 undecidable manual P 189 0.0809 140 -0.18 100
GU.REMY.HHZ. 2019-02-09T10:47:04.82 0.1 undecidable manual P 103 0.0558 150 0.28 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CIRO.HHN. ML:1.5 9.355E-5 0.94 AML other m 2019-02-09T10:47:17.90
IV.MRGE.HHN. ML:2.2 0.00205 0.06 AML other m 2019-02-09T10:47:06.64
GU.REMY.HHE. ML:1.5 0.000479 0.6 AML other m 2019-02-09T10:47:06.69
GU.REMY.HHN. ML:1.6 0.000588 0.26 AML other m 2019-02-09T10:47:06.81
CH.DIX.HHE. ML:1.9 0.0003275 0.18 AML other m 2019-02-09T10:47:14.27
CH.DIX.HHN. ML:1.9 0.000288 0.42 AML other m 2019-02-09T10:47:15.13
GU.CIRO.HHE. ML:1.4 7.05E-5 1.28 AML other m 2019-02-09T10:47:17.31
GU.TRAV.HHE. ML:1.4 4.3728255E-5 0.1408 AML other m 2019-02-09T10:47:25.71
GU.TRAV.HHN. ML:1.6 6.899191E-5 0.1792 AML other m 2019-02-09T10:47:22.56
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