Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 08-09-2021 and time 00:40:08 (Italy) in region Svizzera (SVIZZERA)

A magnitude ML 1.0 earthquake occured in region: Svizzera (SVIZZERA), on

  • 07-09-2021 22:40:08 (UTC)
  • 08-09-2021 00:40:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.7060, 10.1820 at 11 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
Livigno SO 19 6389 6389

Municipalities with at least 50000 inhabitants

An earthquake occurred to
93 Km W of Bolzano (106441 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 2021-09-07
22:40:08		 46.7065 10.1822 11 2021-09-07
22:54:19		 Sala Sismica INGV-Roma 95172441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-07 22:40:08 ± 0.16
Latitude 46.7065 ± 0.0108
Longitude 10.1822 ± 0.0118
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95172441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1169
Semi-minor axis of confidence ellipse (meter) 497
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 208
Circular confidence region, given by single value of horizontal uncertainty (meter) 1170.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 177
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) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75363
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 95172441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-07 22:54:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APPI.EHE. 2021-09-07T22:40:33.44 0.1 undecidable manual S 107 83.6496 90 -0.24 85
SI.ROSI.HHZ. 2021-09-07T22:40:25.66 3.0 negative manual P -0.06 0
ST.CARE.EHZ. 2021-09-07T22:40:24.17 0.3 undecidable manual S 128 50.0166 90 -0.52 63
IV.APPI.EHE. 2021-09-07T22:40:23.96 0.1 undecidable manual P 107 83.6496 90 0.76 76
CH.BERNI.HHZ. 2021-09-07T22:40:20.75 0.1 undecidable manual S 201 34.6431 91 0.15 97
SI.MOSI.HHZ. 2021-09-07T22:40:19.44 0.6 undecidable manual S 110 29.748 91 0.16 49
ST.CARE.EHZ. 2021-09-07T22:40:18.17 0.1 undecidable manual P 128 50.0166 90 0.16 95
IV.BRMO.HHZ. 2021-09-07T22:40:18.85 0.1 undecidable manual S 150 29.3484 91 -0.34 92
CH.DAVOX.HHZ. 2021-09-07T22:40:17.22 0.6 undecidable manual S 290 24.4533 91 -0.65 41
CH.BERNI.HHZ. 2021-09-07T22:40:16.14 0.6 positive manual P 201 34.6431 91 0.49 45
SI.MOSI.HHZ. 2021-09-07T22:40:14.87 0.3 positive manual P 110 29.748 91 -0.02 73
CH.FUORN.HHZ. 2021-09-07T22:40:14.13 0.6 undecidable manual S 147 11.3775 114 -0.29 48
IV.BRMO.HHZ. 2021-09-07T22:40:14.91 0.1 undecidable manual P 150 29.3484 91 0.07 100
CH.DAVOX.HHZ. 2021-09-07T22:40:14.01 0.1 positive manual P 290 24.4533 91 -0.07 98
CH.FUORN.HHZ. 2021-09-07T22:40:12.31 0.6 positive manual P 147 11.3775 114 0.23 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.FUORN.HHN. ML:0.9 0.00008060000000000001 0.58 AML other m 2021-09-07T22:40:14.41
CH.FUORN.HHE. ML:0.8 0.00007505000000000001 0.66 AML other m 2021-09-07T22:40:14.30
CH.DAVOX.HHE. ML:1.8 0.00035749999999999996 0.38 AML other m 2021-09-07T22:40:17.37
CH.DAVOX.HHN. ML:2.1 0.0007425 0.18 AML other m 2021-09-07T22:40:17.52
IV.BRMO.HHN. ML:0.6 0.00002065 0.18 AML other m 2021-09-07T22:40:19.23
IV.BRMO.HHE. ML:0.7 0.0000227 0.52 AML other m 2021-09-07T22:40:19.22
SI.MOSI.HHE. ML:1.1 0.0000589 0.24 AML other m 2021-09-07T22:40:19.56
CH.BERNI.HHE. ML:1.0 0.00004585 0.4 AML other m 2021-09-07T22:40:20.97
CH.BERNI.HHN. ML:1.1 0.00005405 0.1 AML other m 2021-09-07T22:40:20.85
SI.MOSI.HHN. ML:1.2 0.00008515000000000001 0.32 AML other m 2021-09-07T22:40:21.81
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