Earthquake with magnitude of ML 1.7 on date 31-05-2020 and time 14:32:23 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude ML 1.7 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 31-05-2020 12:32:23 (UTC)
  • 31-05-2020 14:32:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.84, 6.6 at 9 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
Claviere TO 17 214 214

Municipalities with at least 50000 inhabitants

An earthquake occurred to
88 Km W of Moncalieri (57294 inhabitants)
89 Km W of Torino (890529 inhabitants)
90 Km NW of Cuneo (56081 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 1.7 2020-05-31
12:32:23
44.84 6.6 9 2020-05-31
12:45:12
Sala Sismica INGV-Roma 79751031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-31 12:32:23 ± 0.23
Latitude 44.84 ± 0.01
Longitude 6.60 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79751031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1071
Semi-minor axis of confidence ellipse (meter) 990
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 30
Circular confidence region, given by single value of horizontal uncertainty (meter) 1070
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.16188
Epicentral distance of station farthest from the epicenter (degree) 1.3265
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 79751031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-31 12:45:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
FR.SAOF.HHZ.00 2020-05-31T12:32:59.83 0.6 undecidable manual S 141 1.0891 50 0.85 33
GU.ENR.HHZ. 2020-05-31T12:32:51.50 0.3 undecidable manual S 136 0.8454 50 -0.25 64
GU.LSD.HHZ. 2020-05-31T12:32:48.58 0.6 undecidable manual S 31 0.7302 50 0.25 44
GU.CANO.HHZ. 2020-05-31T12:32:48.72 0.1 undecidable manual P 118 1.3265 50 0.53 71
FR.SAOF.HHZ.00 2020-05-31T12:32:44.44 0.1 undecidable manual P 141 1.0891 50 0.32 79
GU.RSP.HHZ. 2020-05-31T12:32:43.09 0.6 undecidable manual S 56 0.5666 50 -0.4 44
RD.ORIF.BHE. 2020-05-31T12:32:41.29 0.6 undecidable manual S 280 0.5144 50 -0.66 41
GU.PZZ.HHZ. 2020-05-31T12:32:40.28 0.3 undecidable manual S 131 0.4937 50 -1.06 51
GU.ENR.HHZ. 2020-05-31T12:32:40.62 0.6 positive manual P 136 0.8454 50 0.67 38
GU.LSD.HHZ. 2020-05-31T12:32:38.40 0.1 undecidable manual P 31 0.7302 50 0.42 84
GU.RSP.HHZ. 2020-05-31T12:32:35.56 0.6 negative manual P 56 0.5666 50 0.37 44
RD.ORIF.BHE. 2020-05-31T12:32:34.43 0.1 undecidable manual P 280 0.5144 50 0.14 93
GU.PZZ.HHZ. 2020-05-31T12:32:33.35 0.1 undecidable manual P 131 0.4937 50 -0.59 84
MN.BNI.HHZ. 2020-05-31T12:32:32.62 0.6 undecidable manual S 15 0.2239 110 -0.41 47
GU.RRL.HHZ. 2020-05-31T12:32:30.60 0.6 undecidable manual S 58 0.1619 117 -0.23 49
MN.BNI.HHZ. 2020-05-31T12:32:29.04 0.1 undecidable manual P 15 0.2239 110 -0.1 99
GU.RRL.HHZ. 2020-05-31T12:32:28.01 0.1 positive manual P 58 0.1619 117 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RRL.HHN. ML:1.9 0.0006405 0.18 AML other m 2020-05-31T12:32:30.79
GU.RRL.HHE. ML:1.8 0.000519 0.4 AML other m 2020-05-31T12:32:31.04
GU.PZZ.HHN. ML:1.9 0.00019 0.8 AML other m 2020-05-31T12:32:42.47
GU.PZZ.HHE. ML:1.9 0.000177 1.22 AML other m 2020-05-31T12:32:43.07
GU.RSP.HHE. ML:1.5 6.055E-5 1.28 AML other m 2020-05-31T12:32:48.04
GU.RSP.HHN. ML:1.4 5.075E-5 0.66 AML other m 2020-05-31T12:32:49.56
GU.LSD.HHN. ML:1.5 3.925E-5 0.2 AML other m 2020-05-31T12:32:49.95
GU.LSD.HHE. ML:1.6 6.015E-5 0.24 AML other m 2020-05-31T12:32:51.22
GU.ENR.HHE. ML:1.7 5.92E-5 0.48 AML other m 2020-05-31T12:32:52.54
GU.ENR.HHN. ML:1.8 7.035E-5 1.6 AML other m 2020-05-31T12:32:53.94
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