Earthquake with magnitude of ML 1.1 on date 17-12-2021 and time 13:58:57 (Italy) in region Confine Italia Slovenia (SLOVENIA)

A magnitude ML 1.1 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 17-12-2021 12:58:57 (UTC)
  • 17-12-2021 13:58:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.0540, 13.7030 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Floriano del Collio GO 12 796 796
Stregna UD 13 356 1152
Gorizia GO 14 34844 35996
Grimacco UD 14 342 36338
Drenchia UD 15 115 36453
San Leonardo UD 16 1129 37582
Prepotto UD 17 769 38351
Dolegna del Collio GO 17 370 38721
Mossa GO 17 1584 40305
Savogna UD 18 411 40716
San Pietro al Natisone UD 19 2171 42887
San Lorenzo Isontino GO 19 1564 44451
Capriva del Friuli GO 19 1713 46164
Savogna d'Isonzo GO 20 1717 47881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Udine (99169 inhabitants)
45 Km N of Trieste (204420 inhabitants)
81 Km E of Pordenone (51229 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 1.1 2021-12-17
12:58:57
46.0538 13.7028 8 2021-12-17
13:13:09
Sala Sismica INGV-Roma 98620701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-17 12:58:57 ± 0.29
Latitude 46.0538 ± 0.0054
Longitude 13.7028 ± 0.0259
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 98620701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2046
Semi-minor axis of confidence ellipse (meter) 506
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 97
Circular confidence region, given by single value of horizontal uncertainty (meter) 2050.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 235
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.08184
Epicentral distance of station farthest from the epicenter (degree) 0.36512
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 98620701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-17 13:13:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.BAD.HHE. 2021-12-17T12:59:11.93 0.6 undecidable manual S 300 40.5261 50 0.1 46
NI.VINO.HHZ. 2021-12-17T12:59:11.53 0.6 undecidable manual S 304 39.627 50 -0.06 47
OX.BAD.HHE. 2021-12-17T12:59:06.16 0.3 undecidable manual P 300 40.5261 50 0.26 67
NI.VINO.HHZ. 2021-12-17T12:59:05.44 0.3 undecidable manual P 304 39.627 50 -0.32 67
OX.DRE.HHZ. 2021-12-17T12:59:03.30 0.6 undecidable manual S 341 13.9749 119 -0.05 49
OX.DRE.HHZ. 2021-12-17T12:59:01.05 0.1 positive manual P 341 13.9749 119 0.05 98
OX.SABO.HHZ. 2021-12-17T12:59:01.91 0.6 undecidable manual S 216 9.0798 130 -0.03 50
OX.SABO.HHZ. 2021-12-17T12:59:00.20 0.1 undecidable manual P 216 9.0798 130 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.SABO.HHE. ML:0.8 0.000112 0.76 AML other m 2021-12-17T12:59:03.72
OX.SABO.HHN. ML:1.2 0.00027350000000000003 0.52 AML other m 2021-12-17T12:59:03.73
OX.DRE.HHN. ML:1.2 0.0001895 0.72 AML other m 2021-12-17T12:59:04.54
OX.DRE.HHE. ML:1.2 0.00016549999999999998 0.1 AML other m 2021-12-17T12:59:04.27
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