Earthquake with magnitude of M 2.5 on date 22-04-1985 and time 12:59:49 (Italy) in region Confine Italia Slovenia (SLOVENIA)

A magnitude M 2.5 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 22-04-1985 10:59:49 (UTC)
  • 22-04-1985 12:59:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.08, 13.68 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Stregna UD 9 356 356
Grimacco UD 10 342 698
Drenchia UD 11 115 813
San Leonardo UD 13 1129 1942
San Floriano del Collio GO 13 796 2738
Savogna UD 14 411 3149
San Pietro al Natisone UD 16 2171 5320
Prepotto UD 16 769 6089
Gorizia GO 16 34844 40933
Dolegna del Collio GO 16 370 41303
Pulfero UD 18 962 42265
Cividale del Friuli UD 19 11292 53557
Mossa GO 19 1584 55141
Torreano UD 20 2139 57280

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Udine (99169 inhabitants)
49 Km N of Trieste (204420 inhabitants)
80 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 2.5 1985-04-22
10:59:49
46.08 13.68 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 5299
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-22 10:59:49 ± 0.82
Latitude 46.08 ± 0.12
Longitude 13.68 ± 0.06
Depth (km) 10 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5299

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) 13874.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00445
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 5299
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:39:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.COL.Z. 1985-04-22T10:59:59.20 10.0 undecidable manual SG 283 0.0019 0.94 0.1
--.MPR.Z. 1985-04-22T10:59:59.80 10.0 undecidable manual PG 288 0.0045 -0.11 1.1
--.BUA.Z. 1985-04-22T10:59:58.00 10.0 undecidable manual PG 289 0.0036 -0.14 1.2
--.BAD.Z. 1985-04-22T10:59:57.60 10.0 undecidable manual PG 296 0.003 0.75 0.4
--.VOY.Z. 1985-04-22T10:59:57.20 10.0 undecidable manual SG 109 0.0014 0.72 0.2
--.DRE.Z. 1985-04-22T10:59:54.60 10.0 undecidable manual SG 344 0.0008 0.15 1
--.VOY.Z. 1985-04-22T10:59:53.30 10.0 undecidable manual PG 109 0.0014 -0.22 1.5
--.COL.Z. 1985-04-22T10:59:53.80 10.0 undecidable manual PG 283 0.0019 -0.75 0.5
--.DRE.Z. 1985-04-22T10:59:52.10 10.0 positive manual PG 344 0.0008 -0.25 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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