Earthquake with magnitude of M 2.6 on date 23-02-1985 and time 11:47:18 (Italy) in region Confine Italia Slovenia (SLOVENIA)

A magnitude M 2.6 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 23-02-1985 10:47:18 (UTC)
  • 23-02-1985 11:47:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.12, 13.89 at 9 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.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km E of Udine (99169 inhabitants)
53 Km N of Trieste (204420 inhabitants)
96 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
Rev 1000 M 2.6 1985-02-23
10:47:18
46.12 13.89 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 2269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-23 10:47:18 ± 0.335
Latitude 46.12 ± 0.02
Longitude 13.89 ± 0.03
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2269

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 3202.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 210
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.00518
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

M:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 2269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:50:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BOO.Z. 1985-02-23T10:47:38.70 10.0 undecidable manual SG 290 0.0052 -0.11 0.4
--.BAD.Z. 1985-02-23T10:47:35.20 10.0 undecidable manual SG 285 0.0041 0.24 0.5
--.COL.Z. 1985-02-23T10:47:32.30 10.0 undecidable manual SG 273 0.0032 0.84 0.2
--.RBL.Z. 1985-02-23T10:47:32.50 10.0 undecidable manual SG 326 0.0035 -0.29 0.7
--.BOO.Z. 1985-02-23T10:47:29.40 10.0 undecidable manual PG 290 0.0052 -0.66 0.4
--.BAD.Z. 1985-02-23T10:47:27.30 10.0 undecidable manual PG 285 0.0041 -0.54 0.6
--.RBL.Z. 1985-02-23T10:47:27.50 10.0 undecidable manual PG 326 0.0035 0.92 0.2
--.DRE.Z. 1985-02-23T10:47:26.00 10.0 undecidable manual SG 289 0.0015 0.32 0.7
--.COL.Z. 1985-02-23T10:47:25.70 10.0 undecidable manual PG 273 0.0032 -0.12 1.5
--.DRE.Z. 1985-02-23T10:47:22.30 10.0 positive manual PG 289 0.0015 -0.18 2.9
--.VOY.Z. 1985-02-23T10:47:22.70 10.0 undecidable manual SG 176 0.0007 0.06 0.9
--.VOY.Z. 1985-02-23T10:47:20.80 10.0 positive manual PG 176 0.0007 0.08 3.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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