Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 07-12-2023 and time 03:38:29 (UTC) in region 6 km N Silandro (BZ)

A magnitude ML 1.2 earthquake occured in region: 6 km N Silandro (BZ), on

  • 07-12-2023 03:38:29 (UTC)
  • 07-12-2023 04:38:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.6870, 10.7830 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.

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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
Silandro BZ 7 6016 6016
Laces BZ 10 5188 11204
Lasa BZ 10 3993 15197
Senales BZ 10 1267 16464
Castelbello-Ciardes BZ 11 2309 18773
Martello BZ 13 869 19642
Sluderno BZ 15 1804 21446
Prato allo Stelvio BZ 17 3474 24920
Glorenza BZ 17 896 25816
Naturno BZ 18 5739 31555
Malles Venosta BZ 18 5162 36717

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km W of Bolzano (106441 inhabitants)
73 Km NW of Trento (117317 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 1.2 2023-12-07
03:38:29		 46.6868 10.7832 8 2023-12-07
03:45:29		 Sala Sismica INGV-Roma 123866291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-07 03:38:29 ± 0.18
Latitude 46.6868 ± 0.0090
Longitude 10.7832 ± 0.0092
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 123866291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 820
Semi-minor axis of confidence ellipse (meter) 759
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 214
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.17537
Epicentral distance of station farthest from the epicenter (degree) 0.73565
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 123866291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-07 03:45:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SI.LUSI.HHZ. 2023-12-07T03:38:54.26 0.6 undecidable manual S 171 81.6516 50 0.33 43
CH.DAVOX.HHE. 2023-12-07T03:38:50.22 0.6 undecidable manual S 279 69.4749 50 -0.47 43
SI.LUSI.HHZ. 2023-12-07T03:38:44.27 1.0 undecidable manual P 171 81.6516 50 0.85 18
IV.APPI.EHE. 2023-12-07T03:38:42.24 0.6 undecidable manual S 124 41.0256 50 -0.86 39
ST.OZOL.EHZ. 2023-12-07T03:38:41.83 0.6 undecidable manual S 147 37.4292 50 -0.31 47
CH.BERNI.HHZ. 2023-12-07T03:38:41.09 0.1 undecidable manual P 243 65.3901 50 0.16 93
CH.DAVOX.HHE. 2023-12-07T03:38:41.67 0.1 undecidable manual P 279 69.4749 50 0.12 93
SI.KOSI.HHZ. 2023-12-07T03:38:39.16 1.0 undecidable manual P 118 51.7038 50 0.35 23
ST.CARE.EHZ. 2023-12-07T03:38:39.29 0.6 undecidable manual S 193 29.8479 106 -0.52 46
SI.ROSI.HHZ. 2023-12-07T03:38:39.18 0.3 undecidable manual P 60 54.7008 50 -0.1 72
IV.APPI.EHE. 2023-12-07T03:38:37.42 0.1 undecidable manual P 124 41.0256 50 0.25 95
ST.OZOL.EHZ. 2023-12-07T03:38:36.80 0.1 undecidable manual P 147 37.4292 50 0.18 97
SI.ABSI.HHZ. 2023-12-07T03:38:36.94 0.1 undecidable manual P 83 41.1255 50 -0.24 95
IV.BRMO.HHZ. 2023-12-07T03:38:36.93 0.3 undecidable manual P 233 39.1275 50 0.06 75
SI.MOSI.HHZ. 2023-12-07T03:38:35.69 0.6 undecidable manual S 246 19.4694 113 -0.72 43
ST.CARE.EHZ. 2023-12-07T03:38:35.51 0.1 undecidable manual P 193 29.8479 106 0.24 97
SI.MOSI.HHZ. 2023-12-07T03:38:33.51 0.1 undecidable manual P 246 19.4694 113 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
SI.MOSI.HHN. ML:1.0 0.00007775 1.06 AML other m 2023-12-07T03:38:37.57
IV.BRMO.HHN. ML:1.2 0.00005345 0.16 AML other m 2023-12-07T03:38:37.19
SI.MOSI.HHE. ML:1.0 0.0000692 0.9 AML other m 2023-12-07T03:38:37.42
ST.CARE.EHE. ML:1.2 0.000087 0.16 AML other m 2023-12-07T03:38:39.40
ST.CARE.EHN. ML:1.2 0.00007355 1.38 AML other m 2023-12-07T03:38:39.71
IV.BRMO.HHE. ML:1.0 0.0000366 0.42 AML other m 2023-12-07T03:38:42.56
SI.ABSI.HHN. ML:1.4 0.00007375 0.56 AML other m 2023-12-07T03:38:43.32
SI.ABSI.HHE. ML:1.3 0.00006815 0.2 AML other m 2023-12-07T03:38:43.44
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