Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 21-10-2016 and time 09:42:02 (Italy) in region Confine Italia Slovenia (SLOVENIA)

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

  • 21-10-2016 07:42:02 (UTC)
  • 21-10-2016 09:42:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.1040, 13.9080 at 11 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km N of Trieste (204420 inhabitants)
52 Km E of Udine (99169 inhabitants)
98 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 2016-10-21
07:42:02		 46.1043 13.9077 11 2017-04-10
22:43:27		 Bollettino Sismico Italiano INGV 43675701
Reviewed
Rev100 		ML 1.8 2016-10-21
07:42:02		 46.1032 13.9298 11 2016-10-21
07:55:36		 Sala Sismica INGV-Roma 30416501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-21 07:42:02 ± 0.83
Latitude 46.1043 ± 0.0189
Longitude 13.9077 ± 0.0662
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 43675701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5190
Semi-minor axis of confidence ellipse (meter) 1890
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 5190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 270
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.55
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.61158
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 43675701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-04-10 22:43:27

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 30416501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-10-21 07:55:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2016-10-21T07:44:00.99 3.0 undecidable manual Sg 6.88 0
IV.FIAM.HHZ. 2016-10-21T07:43:56.99 3.0 undecidable manual Sn -9.99 0
IV.MGR.HHZ. 2016-10-21T07:43:47.37 3.0 undecidable manual Pn 5.12 0
IV.FOSV.EHZ. 2016-10-21T07:43:39.99 3.0 undecidable manual Sn -6.38 0
IV.OFFI.HHZ. 2016-10-21T07:43:11.96 3.0 negative manual Pg 8.46 0
IV.T1243.HNZ. 2016-10-21T07:43:06.09 3.0 undecidable manual Pn -0.97 0
IV.FOSV.EHZ. 2016-10-21T07:42:57.66 3.0 undecidable manual Pn -2.95 0
IV.ZONE.HHZ. 2016-10-21T07:42:54.41 3.0 negative manual Pn 1.32 0
IV.BRES.EHZ. 2016-10-21T07:42:32.97 0.3 undecidable manual P 292 178.8876 38 1.54 28
OX.ZOU2.HHZ. 2016-10-21T07:42:29.63 0.6 undecidable manual S 305 87.5457 50 1.25 29
OX.CIMO.HHZ. 2016-10-21T07:42:23.32 0.3 undecidable manual P 282 114.5964 50 1.68 32
IV.PTCC.HHZ. 2016-10-21T07:42:19.12 0.6 undecidable manual S 309 54.2013 50 -0.35 45
OX.ACOM.HHZ. 2016-10-21T07:42:19.89 0.3 undecidable manual S 329 57.6978 50 -0.53 64
IV.STAL.HHZ. 2016-10-21T07:42:18.93 0.3 undecidable manual P 281 93.5397 50 0.54 59
OX.CLUD.HHN. 2016-10-21T07:42:17.50 0.3 undecidable manual P 297 87.8454 50 -0.01 68
OX.ZOU2.HHZ. 2016-10-21T07:42:17.92 0.3 undecidable manual P 305 87.5457 50 0.46 62
OX.MPRI.HHN. 2016-10-21T07:42:14.75 0.3 undecidable manual P 282 72.2721 50 -0.36 65
OX.ACOM.HHZ. 2016-10-21T07:42:12.53 0.1 undecidable manual P 329 57.6978 50 -0.34 89
IV.PTCC.HHZ. 2016-10-21T07:42:11.62 0.3 undecidable manual P 309 54.2013 50 -0.7 60
OX.SABO.HNZ. 2016-10-21T07:42:11.19 0.1 undecidable manual S 239 24.753 50 -0.44 92
OX.SABO.HNZ. 2016-10-21T07:42:07.71 0.1 undecidable manual P 239 24.753 50 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.ACOM.HHE. ML:1.8 0.000123 0.2 AML other m 2016-10-21T07:42:22.50
OX.ACOM.HHN. ML:1.6 0.0000968 0.26 AML other m 2016-10-21T07:42:22.91
IV.PTCC.HHN. ML:1.2 0.00003365 1.14 AML other m 2016-10-21T07:42:20.94
IV.PTCC.HHE. ML:1.2 0.000035699999999999994 0.42 AML other m 2016-10-21T07:42:28.45
IV.STAL.HHN. ML:1.8 0.0000741 0.14 AML other m 2016-10-21T07:42:36.62
IV.STAL.HHE. ML:1.8 0.00006355 0.74 AML other m 2016-10-21T07:42:39.90
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download