Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 31-10-2019 and time 18:47:50 (Italy) in region Confine Italia Slovenia (SLOVENIA)

A magnitude ML 1.6 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 31-10-2019 17:47:50 (UTC)
  • 31-10-2019 18:47:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.2540, 13.7090 at 14 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 11 115 115
Grimacco UD 14 342 457
Savogna UD 17 411 868
Stregna UD 17 356 1224
Pulfero UD 19 962 2186

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Udine (99169 inhabitants)
67 Km N of Trieste (204420 inhabitants)
87 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
Bulletin
Rev1000 		ML 1.6 2019-10-31
17:47:50		 46.254 13.7093 14 2020-02-28
16:42:14		 Bollettino Sismico Italiano INGV 74736311
Reviewed
Rev100 		ML 1.6 2019-10-31
17:47:50		 46.2593 13.7077 10 2019-10-31
17:55:58		 Sala Sismica INGV-Roma 73558101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-31 17:47:50 ± 0.09
Latitude 46.2540 ± 0.0045
Longitude 13.7093 ± 0.0078
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 74736311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 607
Semi-minor axis of confidence ellipse (meter) 91
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 1.34718
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 74736311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-17 13:13:36

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 73558101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-31 17:55:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CR.BRJN.HHN. 2019-10-31T17:48:15.01 1.0 undecidable manual P 179 149.5392 91 0.33 18
OX.VARN.HHZ. 2019-10-31T17:48:11.28 1.0 undecidable manual P 257 126.6732 91 0.12 20
MN.TRI.HHZ. 2019-10-31T17:48:08.33 0.6 undecidable manual S 176 60.5949 93 -0.54 41
OX.BOO.HNE. 2019-10-31T17:48:05.22 0.6 undecidable manual S 279 47.4192 94 -0.12 46
RF.GEPF.HHZ. 2019-10-31T17:48:04.99 0.6 undecidable manual S 273 43.8228 95 0.59 42
IV.STAL.HHZ. 2019-10-31T17:48:03.37 0.3 undecidable manual P 271 76.6677 92 -0.07 66
SL.LJU.BHE. 2019-10-31T17:48:02.37 0.1 undecidable manual P 110 67.0773 93 0.39 85
OX.ACOM.HHZ. 2019-10-31T17:48:02.40 0.3 undecidable manual S 335 35.8419 96 0.11 72
OX.ZOU2.HHZ. 2019-10-31T17:48:02.08 0.3 undecidable manual P 301 65.6898 93 0.32 65
OX.CLUD.HHZ. 2019-10-31T17:48:02.01 0.3 undecidable manual P 290 67.2771 93 0.01 69
OX.BAD.HNE. 2019-10-31T17:48:02.57 0.6 undecidable manual S 267 35.742 96 0.31 46
NI.VINO.HHZ. 2019-10-31T17:48:01.42 0.6 undecidable manual S 270 33.2445 97 -0.17 47
IV.PTCC.HHZ. 2019-10-31T17:48:01.60 0.6 undecidable manual S 302 32.1456 98 0.32 46
OX.FUSE.HHZ. 2019-10-31T17:48:00.37 0.3 undecidable manual P 288 57.0984 93 -0.07 69
OX.MPRI.HHZ. 2019-10-31T17:48:00.28 0.3 undecidable manual P 269 55.4001 94 0.11 69
OX.PLRO.HNZ. 2019-10-31T17:48:00.24 0.3 undecidable manual P 308 54.0015 94 0.28 67
OX.SABO.HHE. 2019-10-31T17:48:00.98 0.6 undecidable manual S 191 30.1476 99 0.22 47
MN.TRI.HHZ. 2019-10-31T17:48:00.33 0.3 undecidable manual P 176 60.5949 93 -0.65 58
RF.GEPF.HHZ. 2019-10-31T17:47:58.40 0.1 undecidable manual P 273 43.8228 95 0 95
OX.PRED.HHE. 2019-10-31T17:47:58.77 0.6 undecidable manual S 332 23.6541 103 -0.3 47
OX.BOO.HNE. 2019-10-31T17:47:58.91 0.3 undecidable manual P 279 47.4192 94 -0.04 70
OX.BAD.HNE. 2019-10-31T17:47:57.06 0.3 undecidable manual P 267 35.742 96 -0.11 71
OX.ACOM.HHZ. 2019-10-31T17:47:57.22 0.1 undecidable manual P 335 35.8419 96 0.04 97
IV.PTCC.HHZ. 2019-10-31T17:47:56.28 0.1 undecidable manual P 302 32.1456 98 -0.32 91
OX.SABO.HHE. 2019-10-31T17:47:56.28 0.1 undecidable manual P 191 30.1476 99 -0.02 97
NI.VINO.HHZ. 2019-10-31T17:47:56.63 0.1 undecidable manual P 270 33.2445 97 -0.15 94
OX.DRE.HHN. 2019-10-31T17:47:55.86 0.6 undecidable manual S 209 10.1787 133 0 50
OX.PRED.HHE. 2019-10-31T17:47:55.12 0.1 undecidable manual P 332 23.6541 103 -0.2 95
OX.DRE.HHN. 2019-10-31T17:47:53.54 0.1 undecidable manual P 209 10.1787 133 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.SABO.HHE. ML:1.6 0.00016599999999999997 0.76 AML other m 2019-10-31T17:48:01.27
OX.SABO.HNE. ML:2.2 0.000668 1.38 AML other m 2019-10-31T17:48:02.20
IV.PTCC.HHN. ML:1.2 0.00005755 1 AML other m 2019-10-31T17:48:02.25
IV.PTCC.HHE. ML:1.2 0.0000577 0.46 AML other m 2019-10-31T17:48:02.68
OX.SABO.HHN. ML:1.6 0.00018099999999999998 0.74 AML other m 2019-10-31T17:48:02.58
OX.SABO.HNN. ML:2.2 0.0006799999999999999 0.72 AML other m 2019-10-31T17:48:02.58
OX.ACOM.HHE. ML:1.6 0.000153 0.26 AML other m 2019-10-31T17:48:03.13
OX.ACOM.HHN. ML:1.4 0.00010165 0.3 AML other m 2019-10-31T17:48:03.49
RF.GEPF.HHN. ML:1.9 0.00022049999999999997 0.38 AML other m 2019-10-31T17:48:05.44
RF.GEPF.HHE. ML:1.9 0.0002155 0.26 AML other m 2019-10-31T17:48:05.49
MN.TRI.HHE. ML:1.3 0.000040400000000000006 1.16 AML other m 2019-10-31T17:48:08.99
MN.TRI.HHN. ML:1.2 0.00003125 0.64 AML other m 2019-10-31T17:48:10.97
OX.MPRI.HHN. ML:1.6 0.00010045 0.38 AML other m 2019-10-31T17:48:11.33
OX.MPRI.HHE. ML:1.4 0.00006225 1.36 AML other m 2019-10-31T17:48:12.89
IV.STAL.HHE. ML:1.6 0.0000619 0.82 AML other m 2019-10-31T17:48:15.48
IV.STAL.HHN. ML:1.5 0.000045600000000000004 0.54 AML other m 2019-10-31T17:48:16.58
OX.VARN.HHE. ML:2.0 0.00006890000000000001 0.64 AML other m 2019-10-31T17:48:30.88
OX.VARN.HHN. ML:2.0 0.000060200000000000006 0.82 AML other m 2019-10-31T17:48:33.20
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