ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.5 on date 02-12-1985 and time 18:57:42 (Italy) in region Confine Austri Slovenia (AUSTRIA, SLOVENIA)

A magnitude Md 2.5 earthquake occured in region: Confine Austri Slovenia (AUSTRIA, SLOVENIA), on

  • 02-12-1985 17:57:42 (UTC)
  • 02-12-1985 18:57:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.42, 14.28 at 10 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
90 Km E of Udine (99169 inhabitants)
94 Km NE of Trieste (204420 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 Md 2.5 1985-12-02
17:57:42
46.42 14.28 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 17269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-02 17:57:42 ± 0.662
Latitude 46.42 ± 0.03
Longitude 14.28 ± 0.04
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 17269

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) 4483.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 251
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) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.00939
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 17269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FO1.Z. 1985-12-02T17:58:18.70 10.0 undecidable manual SN 279 0.0094 0.55 0.5
--.ZOU.Z. 1985-12-02T17:58:13.70 10.0 undecidable manual SG 278 0.0082 -0.21 0.6
--.CEY.Z. 1985-12-02T17:58:07.30 10.0 undecidable manual SG 171 0.0062 0.51 0.5
--.FO1.Z. 1985-12-02T17:58:04.50 10.0 undecidable manual PN 279 0.0094 1.29 0.2
--.DRE.Z. 1985-12-02T17:58:01.20 10.0 undecidable manual SG 240 0.0045 0.3 0.5
--.RBL.Z. 1985-12-02T17:58:00.00 10.0 undecidable manual SG 272 0.0044 -0.49 0.4
--.ZOU.Z. 1985-12-02T17:58:00.70 10.0 undecidable manual PG 278 0.0082 -0.06 1.4
--.VOY.Z. 1985-12-02T17:57:59.80 10.0 undecidable manual SG 214 0.0042 -0.04 0.8
--.CEY.Z. 1985-12-02T17:57:56.40 10.0 undecidable manual PG 171 0.0062 -0.25 1.3
--.RBL.Z. 1985-12-02T17:57:53.00 10.0 undecidable manual PG 272 0.0044 -0.01 1.9
--.DRE.Z. 1985-12-02T17:57:53.30 10.0 undecidable manual PG 240 0.0045 0.06 2.1
--.VOY.Z. 1985-12-02T17:57:52.50 10.0 undecidable manual PG 214 0.0042 -0.13 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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