Earthquake with magnitude of Md 2.6 on date 01-04-1985 and time 22:38:12 (Italy) in region 7 km E Paularo (UD)

A magnitude Md 2.6 earthquake occured in region: 7 km E Paularo (UD), on

  • 01-04-1985 20:38:12 (UTC)
  • 01-04-1985 22:38:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.54, 13.2 at 4 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
Paularo UD 7 2623 2623
Pontebba UD 9 1433 4056
Ligosullo UD 10 116 4172
Treppo Carnico UD 12 618 4790
Dogna UD 13 175 4965
Moggio Udinese UD 14 1714 6679
Paluzza UD 14 2217 8896
Arta Terme UD 16 2171 11067
Zuglio UD 16 595 11662
Resiutta UD 16 309 11971
Cercivento UD 17 679 12650
Sutrio UD 17 1332 13982
Chiusaforte UD 17 672 14654
Malborghetto Valbruna UD 19 951 15605
Resia UD 20 1033 16638

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km N of Udine (99169 inhabitants)
77 Km NE 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 Md 2.6 1985-04-01
20:38:12
46.54 13.2 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-01 20:38:12 ± 0.237
Latitude 46.54 ± 0.01
Longitude 13.20 ± 0.01
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3879

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) 1736.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 190
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
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) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.01101
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 3879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-04-01T20:38:53.00 10.0 undecidable manual SN 245 0.0106 0.16 0.3
--.CTI.Z. 1985-04-01T20:38:37.00 10.0 undecidable manual PN? 245 0.0106 1.15 0
--.CAV.Z. 1985-04-01T20:38:36.70 10.0 undecidable manual PN 258 0.011 0.24 0.8
--.DRE.Z. 1985-04-01T20:38:30.80 10.0 undecidable manual SG 140 0.0042 -0.19 0.6
--.COL.Z. 1985-04-01T20:38:29.60 10.0 undecidable manual SG 163 0.0038 0.55 0.4
--.BUA.Z. 1985-04-01T20:38:25.80 10.0 undecidable manual SG 189 0.0029 0.49 0.4
--.BAD.Z. 1985-04-01T20:38:24.30 10.0 undecidable manual SG 174 0.0027 -0.17 0.9
--.RBL.Z. 1985-04-01T20:38:23.50 10.0 undecidable manual SG 111 0.0023 0.39 0.5
--.DRE.Z. 1985-04-01T20:38:22.50 10.0 undecidable manual PG 140 0.0042 -0.74 0.5
--.FO1.Z. 1985-04-01T20:38:22.50 10.0 undecidable manual SG 280 0.0026 -1.63 0
--.BOO.Z. 1985-04-01T20:38:21.70 10.0 undecidable manual SG 197 0.002 0.03 0.6
--.COL.Z. 1985-04-01T20:38:21.70 10.0 undecidable manual PG 163 0.0038 -0.41 1.2
--.BUA.Z. 1985-04-01T20:38:20.10 10.0 undecidable manual PG 189 0.0029 0.14 1.6
--.ZOU.Z. 1985-04-01T20:38:19.60 10.0 undecidable manual SG 275 0.0014 0.66 0.4
--.FO1.Z. 1985-04-01T20:38:19.00 10.0 undecidable manual PG 280 0.0026 -0.28 2.8
--.BAD.Z. 1985-04-01T20:38:19.30 10.0 positive manual PG 174 0.0027 -0.18 3
--.RBL.Z. 1985-04-01T20:38:19.00 10.0 undecidable manual PG 111 0.0023 0.3 1.4
--.BOO.Z. 1985-04-01T20:38:17.80 10.0 undecidable manual PG 197 0.002 -0.06 1.6
--.ZOU.Z. 1985-04-01T20:38:16.80 10.0 negative manual PG 275 0.0014 0.51 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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