Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 09-09-2020 and time 05:52:01 (UTC) in region 5 km E Bionaz (AO)

A magnitude ML 0.4 earthquake occured in region: 5 km E Bionaz (AO), on

  • 09-09-2020 05:52:01 (UTC)
  • 09-09-2020 07:52:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.8760, 7.4900 at 7 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
Bionaz AO 5 236 236
Oyace AO 9 219 455
Valtournenche AO 10 2277 2732
Torgnon AO 10 558 3290
Chamois AO 11 97 3387
Antey-Saint-André AO 11 602 3989
La Magdeleine AO 12 109 4098
Verrayes AO 13 1302 5400
Valpelline AO 14 657 6057
Ollomont AO 14 157 6214
Saint-Denis AO 15 378 6592
Nus AO 15 2984 9576
Chambave AO 15 931 10507
Fénis AO 16 1813 12320
Doues AO 16 510 12830
Quart AO 16 4039 16869
Saint-Marcel AO 16 1362 18231
Ayas AO 17 1401 19632
Châtillon AO 17 4772 24404
Pontey AO 17 817 25221
Roisan AO 17 1036 26257
Saint-Christophe AO 17 3432 29689
Brissogne AO 18 1008 30697
Allein AO 18 229 30926
Gignod AO 19 1710 32636
Saint-Vincent AO 19 4660 37296
Pollein AO 19 1569 38865

Municipalities with at least 50000 inhabitants

An earthquake occurred to
90 Km N of Torino (890529 inhabitants)
98 Km N of Moncalieri (57294 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 0.4 2020-09-09
05:52:01		 45.8763 7.4905 7 2021-02-26
14:55:56		 Bollettino Sismico Italiano INGV 83230561
Reviewed
Rev100 		Md 1.2 2020-09-09
05:52:01		 45.8763 7.5048 7 2020-09-09
05:57:56		 Sala Sismica INGV-Roma 82755871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-09 05:52:01 ± 0.21
Latitude 45.8763 ± 0.0108
Longitude 7.4905 ± 0.0129
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83230561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1038
Semi-minor axis of confidence ellipse (meter) 588
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 174
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.49
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48563
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 83230561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-25 00:42:37

Md:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 2
Type of magnitude Md
Reference to an origin 82755871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-09 05:57:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MILN.HNZ. 2020-09-09T05:52:25.89 3.0 undecidable manual P 0.06 0
GU.LSD.HHZ. 2020-09-09T05:52:18.34 0.6 undecidable manual S 211 53.9016 50 -1.2 33
IV.MRGE.HHZ. 2020-09-09T05:52:13.57 0.3 undecidable manual S 251 35.2425 102 -0.76 62
GU.CIRO.HHZ. 2020-09-09T05:52:12.38 0.6 undecidable manual S 169 31.0467 103 -0.52 46
GU.LSD.HHZ. 2020-09-09T05:52:12.40 0.1 undecidable manual P 211 53.9016 50 0.34 92
GU.REMY.HHZ. 2020-09-09T05:52:11.17 0.3 undecidable manual S 261 26.1516 105 -0.1 76
GU.SATI.HHZ. 2020-09-09T05:52:11.62 0.6 undecidable manual S 90 29.1486 104 -0.67 43
IV.MRGE.HHZ. 2020-09-09T05:52:09.37 0.1 undecidable manual P 251 35.2425 102 0.31 95
CH.DIX.HHZ. 2020-09-09T05:52:09.76 0.3 undecidable manual S 344 23.4543 107 -0.61 67
GU.SATI.HHZ. 2020-09-09T05:52:08.01 0.1 undecidable manual P 90 29.1486 104 0.13 100
GU.CIRO.HHZ. 2020-09-09T05:52:08.60 0.1 undecidable manual P 169 31.0467 103 0.37 95
GU.REMY.HHZ. 2020-09-09T05:52:07.86 0.1 positive manual P 261 26.1516 105 0.57 90
CH.DIX.HHZ. 2020-09-09T05:52:07.04 0.1 undecidable manual P 344 23.4543 107 0.27 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.DIX.HHN. ML:0.8 0.000037843749999999995 0.5408 AML other m 2020-09-09T05:52:09.85
CH.DIX.HHE. ML:1.1 0.000079030185 0.16 AML other m 2020-09-09T05:52:09.81
GU.REMY.HHN. ML:0.4 0.000013639248999999999 0.7584 AML other m 2020-09-09T05:52:11.58
GU.REMY.HHE. ML:0.2 0.000010048034 0.0992 AML other m 2020-09-09T05:52:11.44
GU.SATI.HHN. ML:0.3 0.000010004774000000002 0.0992 AML other m 2020-09-09T05:52:12.08
GU.SATI.HHE. ML:0.3 0.000010846004500000002 0.0992 AML other m 2020-09-09T05:52:12.09
GU.CIRO.HHE. ML:0.3 0.000007555436000000001 0.4608 AML other m 2020-09-09T05:52:12.41
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