Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 01-09-2020 and time 17:40:20 (Italy) in region 5 km NW Pontechianale (CN)

A magnitude ML 1.0 earthquake occured in region: 5 km NW Pontechianale (CN), on

  • 01-09-2020 15:40:20 (UTC)
  • 01-09-2020 17:40:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6580, 6.9950 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.

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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
Pontechianale CN 5 179 179
Bellino CN 9 109 288
Casteldelfino CN 9 157 445
Crissolo CN 14 168 613
Elva CN 15 97 710
Oncino CN 16 76 786
Ostana CN 16 83 869
Sampeyre CN 18 1022 1891
Bobbio Pellice TO 19 563 2454
Stroppo CN 20 103 2557
Prazzo CN 20 170 2727

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km NW of Cuneo (56081 inhabitants)
67 Km SW of Moncalieri (57294 inhabitants)
71 Km SW of Torino (890529 inhabitants)
99 Km W of Asti (76202 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
Reviewed
Rev100 		ML 1.0 2020-09-01
15:40:20		 44.6577 6.9952 10 2020-09-01
15:49:52		 Sala Sismica INGV-Roma 82534671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-01 15:40:20 ± 0.16
Latitude 44.6577 ± 0.0054
Longitude 6.9952 ± 0.0139
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 82534671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1100
Semi-minor axis of confidence ellipse (meter) 464
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.78061
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 82534671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-01 15:49:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.ENR.HHZ. 2020-09-01T15:40:39.05 0.6 undecidable manual S 145 58.497 50 -0.24 59
GU.RSP.HHZ. 2020-09-01T15:40:38.98 0.3 undecidable manual S 21 58.3971 50 -0.29 88
GU.STV.HHZ. 2020-09-01T15:40:37.42 0.6 undecidable manual S 150 52.7028 50 -0.32 59
RD.ORIF.BHZ. 2020-09-01T15:40:37.54 3.0 positive manual P -0.28 0
FR.SAOF.HHZ.00 2020-09-01T15:40:36.21 0.6 undecidable manual P 149 86.6466 50 0.34 55
GU.GBOS.HHZ. 2020-09-01T15:40:35.23 0.3 undecidable manual P 124 81.252 50 0.19 86
GU.RRL.HHZ. 2020-09-01T15:40:32.32 0.3 undecidable manual S 331 33.3444 50 -0.26 93
GU.BHB.HHZ. 2020-09-01T15:40:31.23 0.3 undecidable manual S 47 28.8489 50 -0.16 95
GU.ENR.HHZ. 2020-09-01T15:40:31.66 0.3 undecidable manual P 145 58.497 50 0.13 91
GU.RSP.HHZ. 2020-09-01T15:40:31.98 0.3 undecidable manual P 21 58.3971 50 0.46 85
GU.STV.HHZ. 2020-09-01T15:40:30.92 0.3 undecidable manual P 150 52.7028 50 0.28 89
GU.PZZ.HHZ. 2020-09-01T15:40:28.08 0.3 undecidable manual S 150 19.2696 117 -0.35 93
GU.BHB.HHZ. 2020-09-01T15:40:27.22 0.3 positive manual P 47 28.8489 50 0.25 93
GU.RRL.HHZ. 2020-09-01T15:40:27.55 0.6 undecidable manual P 331 33.3444 50 -0.1 64
GU.PZZ.HHZ. 2020-09-01T15:40:25.26 0.3 positive manual P 150 19.2696 117 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HHN. ML:0.7 0.00002745 1.02 AML other m 2020-09-01T15:40:31.55
GU.BHB.HHE. ML:0.9 0.0000402 0.64 AML other m 2020-09-01T15:40:32.67
GU.RRL.HHE. ML:0.9 0.0000353 0.24 AML other m 2020-09-01T15:40:33.05
GU.RRL.HHN. ML:1.0 0.00004155 0.66 AML other m 2020-09-01T15:40:33.45
GU.STV.HHE. ML:1.0 0.000027250000000000005 0.58 AML other m 2020-09-01T15:40:38.04
GU.STV.HHN. ML:0.9 0.000020799999999999997 0.58 AML other m 2020-09-01T15:40:38.97
GU.ENR.HHN. ML:1.3 0.00003800000000000001 0.42 AML other m 2020-09-01T15:40:39.77
GU.ENR.HHE. ML:1.3 0.00003765 1.78 AML other m 2020-09-01T15:40:40.93
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