Earthquake with magnitude of ML 0.4 on date 28-09-2019 and time 21:57:28 (Italy) in region 7 km E Bionaz (AO)

A magnitude ML 0.4 earthquake occured in region: 7 km E Bionaz (AO), on

  • 28-09-2019 19:57:28 (UTC)
  • 28-09-2019 21:57:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.88, 7.51 at 8 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
Bionaz AO 7 236 236
Valtournenche AO 9 2277 2513
Chamois AO 10 97 2610
Torgnon AO 10 558 3168
Oyace AO 10 219 3387
Antey-Saint-André AO 10 602 3989
La Magdeleine AO 11 109 4098
Verrayes AO 13 1302 5400
Saint-Denis AO 14 378 5778
Valpelline AO 15 657 6435
Chambave AO 15 931 7366
Ayas AO 16 1401 8767
Ollomont AO 16 157 8924
Fénis AO 16 1813 10737
Nus AO 16 2984 13721
Châtillon AO 16 4772 18493
Saint-Marcel AO 17 1362 19855
Quart AO 17 4039 23894
Pontey AO 17 817 24711
Doues AO 17 510 25221
Saint-Vincent AO 18 4660 29881
Roisan AO 19 1036 30917
Saint-Christophe AO 19 3432 34349
Brissogne AO 19 1008 35357
Allein AO 20 229 35586
Gignod AO 20 1710 37296

Municipalities with at least 50000 inhabitants

An earthquake occurred to
90 Km N of Torino (890529 inhabitants)
98 Km N of Moncalieri (57294 inhabitants)
99 Km W of Novara (104380 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 0.4 2019-09-28
19:57:28
45.88 7.51 8 2019-09-28
20:10:59
Sala Sismica INGV-Roma 72864001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-28 19:57:28 ± 0.13
Latitude 45.88 ± 0.01
Longitude 7.51 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72864001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 767
Semi-minor axis of confidence ellipse (meter) 472
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 770
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.21404
Epicentral distance of station farthest from the epicenter (degree) 0.49463
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 72864001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-28 20:10:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.LSD.HHZ. 2019-09-28T19:57:45.90 1.0 undecidable manual S 212 0.4946 50 -0.87 19
GU.TRAV.HHZ. 2019-09-28T19:57:43.24 0.6 undecidable manual S 156 0.4011 50 -0.76 40
GU.CIRO.HHZ. 2019-09-28T19:57:39.43 0.6 undecidable manual S 172 0.2797 104 -0.56 45
GU.LSD.HHZ. 2019-09-28T19:57:39.42 0.1 undecidable manual P 212 0.4946 50 0.2 93
GU.REMY.HHZ. 2019-09-28T19:57:38.24 0.6 undecidable manual S 261 0.25 105 -0.64 44
GU.SATI.HHZ. 2019-09-28T19:57:38.63 0.3 undecidable manual S 91 0.2491 105 -0.23 73
GU.TRAV.HHZ. 2019-09-28T19:57:37.85 0.1 undecidable manual P 156 0.4011 50 0.23 95
CH.DIX.HHZ. 2019-09-28T19:57:36.91 0.3 undecidable manual S 341 0.214 108 -0.65 66
IV.MRGE.HHZ. 2019-09-28T19:57:36.48 0.1 undecidable manual P 251 0.331 50 0.05 100
CH.MMK.HHE. 2019-09-28T19:57:36.90 0.1 undecidable manual P 61 0.3588 50 0 100
GU.CIRO.HHZ. 2019-09-28T19:57:35.66 0.1 undecidable manual P 172 0.2797 104 0.35 95
GU.REMY.HHZ. 2019-09-28T19:57:35.03 0.1 undecidable manual P 261 0.25 105 0.37 95
GU.SATI.HHZ. 2019-09-28T19:57:34.94 0.6 undecidable manual P 91 0.2491 105 0.28 48
CH.DIX.HHZ. 2019-09-28T19:57:34.23 0.1 undecidable manual P 341 0.214 108 0.33 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.DIX.HHE. ML:1 7.111633E-5 0.128 AML other m 2019-09-28T19:57:37.11
GU.SATI.HHE. ML:0 7.3867535E-6 0.0896 AML other m 2019-09-28T19:57:39.08
GU.SATI.HHN. ML:0.3 1.058315805E-5 0.0512 AML other m 2019-09-28T19:57:39.71
GU.REMY.HHE. ML:0.7 2.255251E-5 1.0496 AML other m 2019-09-28T19:57:38.41
GU.REMY.HHN. ML:0.6 2.11184175E-5 0.5888 AML other m 2019-09-28T19:57:38.41
GU.CIRO.HHE. ML:0 7.3585329E-6 0.1408 AML other m 2019-09-28T19:57:39.74
GU.CIRO.HHN. ML:0 4.78111915E-6 0.0896 AML other m 2019-09-28T19:57:39.85
GU.TRAV.HHE. ML:0.5 1.06536575E-5 0.7808 AML other m 2019-09-28T19:57:43.21
GU.TRAV.HHN. ML:0.5 9.107838E-6 0.0768 AML other m 2019-09-28T19:57:43.82
GU.LSD.HHE. ML:0.3 4.889964E-6 0.9856 AML other m 2019-09-28T19:57:45.93
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