Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 11-09-2023 and time 16:32:11 (Italy) in region Confine Italia Slovenia (SLOVENIA)

A magnitude ML 1.4 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 11-09-2023 14:32:11 (UTC)
  • 11-09-2023 16:32:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.1080, 13.7530 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
Drenchia UD 13 115 115
Grimacco UD 13 342 457
Stregna UD 14 356 813
San Leonardo UD 18 1129 1942
Savogna UD 18 411 2353
San Floriano del Collio GO 19 796 3149

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Udine (99169 inhabitants)
51 Km N of Trieste (204420 inhabitants)
86 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 1.4 2023-09-11
14:32:11		 46.1082 13.7533 10 2023-09-11
14:43:58		 Sala Sismica INGV-Roma 120978341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-11 14:32:11 ± 0.31
Latitude 46.1082 ± 0.0099
Longitude 13.7533 ± 0.0272
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 120978341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2192
Semi-minor axis of confidence ellipse (meter) 832
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 2190.0
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 29
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.20599
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 120978341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-11 14:43:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TRIF.CHZ. 2023-09-11T14:34:03.55 3.0 undecidable manual Sg 11.33 0
IV.FAGN.HHZ. 2023-09-11T14:33:56.79 3.0 undecidable manual Sn -1.05 0
IV.NOCI.HHZ. 2023-09-11T14:33:38.92 3.0 negative manual Pn 0.1 0
IV.SNTG.HHZ. 2023-09-11T14:33:33.34 3.0 undecidable manual Sn -1.7 0
IV.CPOZ.HNZ. 2023-09-11T14:33:31.66 3.0 undecidable manual Pn 0.34 0
IV.ARVD.HHZ. 2023-09-11T14:33:29.69 3.0 undecidable manual Sn 0.47 0
IV.RIBO.EHZ. 2023-09-11T14:33:15.02 3.0 positive manual Pn 5.56 0
SL.BOJS.BHZ. 2023-09-11T14:32:35.27 1.0 undecidable manual P 120 133.866 50 1.13 14
NI.PALA.HHZ. 2023-09-11T14:32:32.61 0.6 undecidable manual S 284 65.49 50 0.5 43
OX.MPRI.HHZ. 2023-09-11T14:32:31.30 0.6 undecidable manual S 284 60.5949 50 0.49 43
NI.POLC.HHZ. 2023-09-11T14:32:29.77 0.3 undecidable manual P 265 96.8253 50 1.33 42
OX.MLN.HHZ. 2023-09-11T14:32:28.31 0.3 undecidable manual P 273 87.6456 50 1.29 43
IV.PTCC.HHZ. 2023-09-11T14:32:26.49 0.6 undecidable manual S 317 45.2214 50 -0.2 47
IV.STAL.HHZ. 2023-09-11T14:32:26.21 1.0 undecidable manual P 282 81.8514 50 0.08 23
MN.TRI.HHZ. 2023-09-11T14:32:25.79 0.3 undecidable manual S 179 44.3223 50 -0.66 63
OX.FUSE.HHZ. 2023-09-11T14:32:24.05 0.6 negative manual P 301 66.9774 50 0.22 45
OX.PRED.HHE. 2023-09-11T14:32:24.71 0.3 undecidable manual S 339 39.8268 50 -0.55 66
NI.VINO.HHZ. 2023-09-11T14:32:24.24 0.6 undecidable manual S 294 40.1265 50 -1.1 35
OX.MPRI.HHZ. 2023-09-11T14:32:23.28 0.3 undecidable manual P 284 60.5949 50 0.42 66
NI.PALA.HHZ. 2023-09-11T14:32:23.64 1.0 negative manual P 284 65.49 50 0.03 24
MN.TRI.HHZ. 2023-09-11T14:32:21.12 0.3 undecidable manual P 179 44.3223 50 0.78 60
OX.BOO.HHE. 2023-09-11T14:32:21.60 0.6 undecidable manual P 295 55.5 50 -0.46 44
IV.PTCC.HHZ. 2023-09-11T14:32:20.52 0.6 positive manual P 317 45.2214 50 0.04 49
OX.PRED.HHE. 2023-09-11T14:32:19.33 0.3 undecidable manual P 339 39.8268 50 -0.32 70
OX.SABO.HNZ. 2023-09-11T14:32:18.06 0.3 undecidable manual S 215 16.2726 122 -0.61 67
NI.VINO.HHZ. 2023-09-11T14:32:18.91 0.1 undecidable manual P 294 40.1265 50 -0.78 80
OX.DRE.HHZ. 2023-09-11T14:32:17.34 0.6 undecidable manual S 311 10.9779 133 0.12 51
OX.DRE.HHZ. 2023-09-11T14:32:15.29 0.1 undecidable manual P 311 10.9779 133 0.28 99
OX.SABO.HNZ. 2023-09-11T14:32:15.66 0.1 undecidable manual P 215 16.2726 122 -0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.SABO.HHE. ML:2.0 0.000906 0.42 AML other m 2023-09-11T14:32:18.32
OX.SABO.HNE. ML:2.6 0.0034500000000000004 0.42 AML other m 2023-09-11T14:32:18.32
OX.SABO.HNN. ML:2.4 0.002105 0.58 AML other m 2023-09-11T14:32:18.40
OX.SABO.HHN. ML:1.8 0.0005525 0.6 AML other m 2023-09-11T14:32:18.39
NI.VINO.HHN. ML:1.2 0.000052000000000000004 1.3 AML other m 2023-09-11T14:32:25.07
NI.VINO.HHE. ML:1.1 0.000041599999999999995 0.96 AML other m 2023-09-11T14:32:25.25
MN.TRI.HHN. ML:1.3 0.0000658 1.82 AML other m 2023-09-11T14:32:26.03
MN.TRI.HHE. ML:1.2 0.000047 0.74 AML other m 2023-09-11T14:32:26.96
IV.PTCC.HHE. ML:1.2 0.0000462 0.12 AML other m 2023-09-11T14:32:28.41
IV.PTCC.HHN. ML:1.1 0.0000388 0.9 AML other m 2023-09-11T14:32:28.96
OX.MPRI.HHE. ML:1.0 0.000021249999999999998 0.24 AML other m 2023-09-11T14:32:32.26
OX.MPRI.HHN. ML:1.3 0.00004205 0.44 AML other m 2023-09-11T14:32:34.57
NI.PALA.HHE. ML:1.5 0.00005895 0.36 AML other m 2023-09-11T14:32:34.84
NI.PALA.HHN. ML:1.3 0.000034699999999999996 0.4 AML other m 2023-09-11T14:32:35.46
IV.STAL.HHN. ML:1.3 0.000024449999999999998 0.92 AML other m 2023-09-11T14:32:38.46
IV.STAL.HHE. ML:1.4 0.0000363 0.78 AML other m 2023-09-11T14:32:38.55
SL.BOJS.BHN. ML:1.7 0.0000289 0.5 AML other m 2023-09-11T14:32:55.27
SL.BOJS.BHE. ML:1.7 0.000028400000000000003 0.4 AML other m 2023-09-11T14:32:56.27
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