Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 04-07-2013 and time 20:10:17 (UTC) in region 9 km N Courmayeur (AO)

A magnitude ML 1.4 earthquake occured in region: 9 km N Courmayeur (AO), on

  • 04-07-2013 20:10:17 (UTC)
  • 04-07-2013 22:10:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.8710, 7.0030 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.

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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
Pré-Saint-Didier AO 12 1050 3857
Morgex AO 13 2104 5961
La Salle AO 15 2087 8048
Saint-Rhémy-en-Bosses AO 15 338 8386
Saint-Oyen AO 17 203 8589
La Thuile AO 18 761 9350
Etroubles AO 19 501 9851

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 1.4 2013-07-04
20:10:17		 45.8712 7.0033 10 2015-01-20
11:27:28		 Bollettino Sismico Italiano INGV 8034811
Reviewed
Rev100 		ML 1.4 2013-07-04
20:10:18		 45.8725 7.0188 11 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 3956001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-07-04 20:10:17 ± 0.33
Latitude 45.8712 ± 0.0108
Longitude 7.0033 ± 0.0220
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 8034811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1829
Semi-minor axis of confidence ellipse (meter) 943
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 1830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 246
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.74554
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:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 8034811
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:29:02

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 3956001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-07-04 20:15:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RSP.HHZ. 2013-07-04T20:10:43.21 0.1 undecidable manual S 166 82.7505 50 0.44 80
GU.SATI.HHZ. 2013-07-04T20:10:39.07 0.3 undecidable manual S 89 66.7776 50 0.56 60
GU.TRAV.HHZ. 2013-07-04T20:10:38.96 0.3 undecidable manual S 124 69.9744 50 -0.41 62
GU.CIRO.HHZ. 2013-07-04T20:10:34.63 0.1 undecidable manual S 124 53.0025 50 -0.18 90
GU.LSD.HHZ. 2013-07-04T20:10:32.58 0.1 undecidable manual S 167 46.8198 50 -0.59 82
GU.RSP.HHZ. 2013-07-04T20:10:32.58 0.1 undecidable manual P 166 82.7505 50 0.29 83
CH.DIX.HHZ. 2013-07-04T20:10:30.06 0.3 undecidable manual S 53 38.8278 50 -0.99 52
GU.TRAV.HHZ. 2013-07-04T20:10:30.63 0.3 undecidable manual P 124 69.9744 50 0.3 64
GU.SATI.HHZ. 2013-07-04T20:10:30.62 0.1 undecidable manual P 89 66.7776 50 0.78 73
GU.CIRO.HHZ. 2013-07-04T20:10:27.89 0.1 undecidable manual P 124 53.0025 50 0.19 90
GU.LSD.HHZ. 2013-07-04T20:10:26.72 0.1 undecidable manual P 167 46.8198 50 -0.03 93
CH.DIX.HHZ. 2013-07-04T20:10:25.36 0.1 undecidable manual P 53 38.8278 50 -0.17 92
IV.MRGE.HHZ. 2013-07-04T20:10:23.24 0.1 undecidable manual S 158 12.0768 130 -0.2 96
GU.REMY.HHZ. 2013-07-04T20:10:23.62 0.1 undecidable manual S 107 12.3765 129 0.1 98
GU.REMY.HHZ. 2013-07-04T20:10:21.19 0.1 undecidable manual P 107 12.3765 129 0.01 100
IV.MRGE.HHZ. 2013-07-04T20:10:20.99 0.1 undecidable manual P 158 12.0768 130 -0.14 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.DIX.HHE. ML:1.2 0.00005605 0.32 AML other m 2013-07-04T20:10:30.34
CH.DIX.HHN. ML:1.1 0.00004765 1.12 AML other m 2013-07-04T20:10:31.03
GU.LSD.HHN. ML:1.3 0.00005815 0.12 AML other m 2013-07-04T20:10:32.76
GU.LSD.HHE. ML:1.7 0.000136 0.14 AML other m 2013-07-04T20:10:32.70
IV.MRGE.HHE. ML:1.8 0.000758 0.44 AML other m 2013-07-04T20:10:23.48
IV.MRGE.HHN. ML:1.9 0.000807 0.42 AML other m 2013-07-04T20:10:23.36
GU.REMY.HHN. ML:1.5 0.00036899999999999997 0.48 AML other m 2013-07-04T20:10:23.94
GU.REMY.HHE. ML:1.4 0.0002875 0.4 AML other m 2013-07-04T20:10:24.04
GU.SATI.HHN. ML:1.1 0.00002365 1.02 AML other m 2013-07-04T20:10:39.15
GU.SATI.HHE. ML:1.2 0.000029849999999999997 0.16 AML other m 2013-07-04T20:10:39.49
GU.TRAV.HHE. ML:1.5 0.00004865 0.44 AML other m 2013-07-04T20:10:39.79
GU.TRAV.HHN. ML:1.6 0.00006709999999999999 0.54 AML other m 2013-07-04T20:10:40.25
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