Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 28-12-2014 and time 07:01:21 (Italy) in region V3 Monte Bianco (ITALIA, FRANCIA, SVIZZERA)

A magnitude ML 2.1 earthquake occured in region: V3 Monte Bianco (ITALIA, FRANCIA, SVIZZERA), on

  • 28-12-2014 06:01:21 (UTC)
  • 28-12-2014 07:01:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.9380, 7.0850 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
Saint-Rhémy-en-Bosses AO 15 338 338
Saint-Oyen AO 16 203 541
Etroubles AO 17 501 1042
Courmayeur AO 18 2807 3849

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 2.1 2014-12-28
06:01:21		 45.9378 7.0848 10 2015-09-21
09:40:11		 Bollettino Sismico Italiano INGV 19695271
Reviewed
Rev100 		ML 2.1 2014-12-28
06:01:21		 45.9462 7.0793 10 2014-12-28
06:09:59		 Sala Sismica INGV-Roma 15744251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-12-28 06:01:21 ± 0.28
Latitude 45.9378 ± 0.0117
Longitude 7.0848 ± 0.0272
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 19695271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2290
Semi-minor axis of confidence ellipse (meter) 716
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 293
Circular confidence region, given by single value of horizontal uncertainty (meter) 2290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.16907
Epicentral distance of station farthest from the epicenter (degree) 2.10351
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 1
Type of magnitude ML
Reference to an origin 19695271
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-06-15 15:06:17

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 15744251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-12-28 06:09:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.DAVOX.HHZ. 2014-12-28T06:01:59.22 0.3 undecidable manual P 65 233.4885 38 1.88 16
MN.TUE.HHZ. 2014-12-28T06:01:52.65 0.3 undecidable manual P 70 183.483 38 1.52 27
GU.PZZ.HHZ. 2014-12-28T06:01:48.18 0.1 undecidable manual P 179 158.8188 50 0.66 63
GU.RSP.HHZ. 2014-12-28T06:01:48.10 0.6 undecidable manual S 171 88.7445 50 0.22 42
CH.BNALP.HHZ. 2014-12-28T06:01:46.27 0.6 undecidable manual P 44 145.6431 50 0.77 32
RD.ORIF.BHE. 2014-12-28T06:01:45.23 0.6 undecidable manual P 220 146.9418 50 -0.47 36
MN.BNI.HHZ. 2014-12-28T06:01:38.64 0.3 undecidable manual P 198 103.2189 50 -0.32 60
GU.CIRO.HHZ. 2014-12-28T06:01:38.30 0.3 undecidable manual S 135 52.8027 50 0.01 71
GU.LSD.HHZ. 2014-12-28T06:01:38.00 0.1 undecidable manual S 176 53.2023 50 -0.4 87
GU.RSP.HHZ. 2014-12-28T06:01:36.89 0.1 undecidable manual P 171 88.7445 50 0.17 86
GU.TRAV.HHZ. 2014-12-28T06:01:34.19 0.6 undecidable manual P 132 69.6747 50 0.4 42
CH.MMK.HHZ. 2014-12-28T06:01:33.39 0.3 undecidable manual P 79 68.8755 50 -0.28 65
GU.SATI.HHE. 2014-12-28T06:01:32.32 0.6 undecidable manual P 96 60.8946 50 -0.11 46
GU.CIRO.HHZ. 2014-12-28T06:01:31.56 0.6 undecidable manual P 135 52.8027 50 0.37 44
CH.DIX.HHZ. 2014-12-28T06:01:31.40 0.3 undecidable manual S 58 29.4483 50 -0.67 63
GU.LSD.HHZ. 2014-12-28T06:01:31.21 0.1 undecidable manual P 176 53.2023 50 -0.04 94
IV.MRGE.HHZ. 2014-12-28T06:01:28.80 0.1 undecidable manual S 186 18.7701 118 -0.04 100
CH.DIX.HHZ. 2014-12-28T06:01:27.17 0.1 undecidable manual P 58 29.4483 50 -0.42 90
IV.MRGE.HHZ. 2014-12-28T06:01:25.58 0.1 undecidable manual P 186 18.7701 118 -0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRGE.HHN. ML:2.0 0.0008605 0.2 AML other m 2014-12-28T06:01:25.80
IV.MRGE.HHE. ML:2.2 0.001405 0.32 AML other m 2014-12-28T06:01:29.04
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
Waveforms Seismic signals in miniseed + resp format Download