Earthquake with magnitude of ML 1.1 on date 20-01-2020 and time 13:07:26 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude ML 1.1 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 20-01-2020 12:07:26 (UTC)
  • 20-01-2020 13:07:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.32, 7.08 at 10 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
Balme TO 11 115 115
Usseglio TO 15 209 324
Moncenisio TO 15 36 360
Novalesa TO 16 534 894
Groscavallo TO 16 204 1098
Ceresole Reale TO 17 156 1254
Ala di Stura TO 17 469 1723
Venaus TO 20 907 2630
Lemie TO 20 179 2809

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km NW of Torino (890529 inhabitants)
59 Km NW of Moncalieri (57294 inhabitants)
100 Km W of Asti (76202 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 1.1 2020-01-20
12:07:26
45.33 7.08 10 2020-01-20
12:12:36
Sala Sismica INGV-Roma 75677231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-20 12:07:26 ± 0.21
Latitude 45.33 ± 0.01
Longitude 7.08 ± 0.02
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75677231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1597
Semi-minor axis of confidence ellipse (meter) 460
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 91
Circular confidence region, given by single value of horizontal uncertainty (meter) 1600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.1385
Epicentral distance of station farthest from the epicenter (degree) 0.50542
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 75677231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-20 12:12:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BHB.HHZ. 2020-01-20T12:07:43.42 0.3 undecidable manual S 165 0.5054 50 -0.35 71
IV.MRGE.HHZ. 2020-01-20T12:07:41.26 0.3 undecidable manual S 358 0.4443 50 -0.69 65
GU.CIRO.HHE. 2020-01-20T12:07:41.37 0.3 undecidable manual S 51 0.438 50 -0.39 72
MN.BNI.HHZ. 2020-01-20T12:07:39.94 0.3 undecidable manual S 226 0.3948 50 -0.55 69
GU.BHB.HHZ. 2020-01-20T12:07:37.00 0.3 undecidable manual P 165 0.5054 50 0.7 64
GU.TRAV.HHZ. 2020-01-20T12:07:36.61 0.6 undecidable manual P 68 0.5018 50 0.38 47
GU.CIRO.HHE. 2020-01-20T12:07:35.66 0.3 undecidable manual P 51 0.438 50 0.52 69
IV.MRGE.HHZ. 2020-01-20T12:07:35.82 0.1 negative manual P 358 0.4443 50 0.57 91
MN.BNI.HHZ. 2020-01-20T12:07:34.76 0.6 negative manual P 226 0.3948 50 0.36 49
GU.RSP.HHZ. 2020-01-20T12:07:34.72 0.3 undecidable manual S 144 0.2185 112 -0.46 74
GU.LSD.HHE. 2020-01-20T12:07:32.01 0.1 undecidable manual S 15 0.1385 123 -0.45 100
GU.RSP.HHZ. 2020-01-20T12:07:31.51 0.3 undecidable manual P 144 0.2185 112 0.18 78
GU.LSD.HHE. 2020-01-20T12:07:30.18 0.3 undecidable manual P 15 0.1385 123 0.41 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HHE. ML:1.4 5.345E-5 0.42 AML other m 2020-01-20T12:07:46.38
GU.RSP.HHE. ML:1.2 9.5436265E-5 0.1024 AML other m 2020-01-20T12:07:34.82
GU.RSP.HHN. ML:0.9 4.437482E-5 0.1792 AML other m 2020-01-20T12:07:35.34
IV.MRGE.HHE. ML:0.9 1.769655E-5 0.1536 AML other m 2020-01-20T12:07:41.61
IV.MRGE.HHN. ML:1 2.5604425E-5 1.696 AML other m 2020-01-20T12:07:41.54
GU.TRAV.HHE. ML:1.2 4.23305E-5 0.224 AML other m 2020-01-20T12:07:45.64
GU.TRAV.HHN. ML:1.2 3.57237E-5 0.0832 AML other m 2020-01-20T12:07:45.65
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