Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.3 on date 27-02-1985 and time 18:04:14 (Italy) in region 1 km SW Forni di Sotto (UD)

A magnitude Md 2.3 earthquake occured in region: 1 km SW Forni di Sotto (UD), on

  • 27-02-1985 17:04:14 (UTC)
  • 27-02-1985 18:04:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.3840, 12.6610 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Forni di Sotto UD 2 600 600
Forni di Sopra UD 8 993 1593
Sauris UD 10 416 2009
Ampezzo UD 11 1006 3015
Socchieve UD 13 908 3923
Tramonti di Sopra PN 13 321 4244
Tramonti di Sotto PN 15 387 4631
Preone UD 16 246 4877
Enemonzo UD 17 1319 6196
Raveo UD 17 458 6654
Claut PN 17 956 7610
Prato Carnico UD 19 904 8514
Lorenzago di Cadore BL 19 549 9063
Ovaro UD 19 1922 10985
Vigo di Cadore BL 19 1440 12425
Frisanco PN 20 622 13047

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km N of Pordenone (51229 inhabitants)
57 Km NW of Udine (99169 inhabitants)
86 Km NE of Treviso (83731 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 		Md 2.3
M 2.5 		1985-02-27
17:04:14		 46.384 12.661 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 2719
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-27 17:04:14 ± 0.159
Latitude 46.3840 ± 0.0078
Longitude 12.6610 ± 0.0125
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2719

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) 1289.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.00194
Epicentral distance of station farthest from the epicenter (degree) 0.00696
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 2719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:35

M:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 2719
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(km) Takeoff_angle Residual Weight
--.CTI.Z. 1985-02-27T17:04:41.00 10.0 undecidable manual SG 244 0.777 -0.67 0.2
--.DRE.Z. 1985-02-27T17:04:39.30 10.0 undecidable manual SG 106 0.7104 -0.28 0.5
--.RBL.Z. 1985-02-27T17:04:37.50 10.0 undecidable manual SG 84 0.6216 0.59 0.3
--.COL.Z. 1985-02-27T17:04:35.00 10.0 undecidable manual SG 116 0.5439 0.39 0.5
--.CTI.Z. 1985-02-27T17:04:31.00 10.0 undecidable manual PG 244 0.777 0.66 0.5
--.BAD.Z. 1985-02-27T17:04:30.70 10.0 undecidable manual SG 109 0.4218 0.18 0.8
--.CAE.Z. 1985-02-27T17:04:30.70 10.0 undecidable manual SG 202 0.3996 0.83 0.1
--.BUA.Z. 1985-02-27T17:04:29.40 10.0 undecidable manual SG 117 0.3552 1.07 0.1
--.RBL.Z. 1985-02-27T17:04:28.00 10.0 undecidable manual PG 84 0.6216 0.41 1.1
--.DRE.Z. 1985-02-27T17:04:28.90 10.0 undecidable manual PG 106 0.7104 -0.23 1.3
--.BOO.Z. 1985-02-27T17:04:26.20 10.0 undecidable manual SG 101 0.3108 -0.52 0.6
--.COL.Z. 1985-02-27T17:04:26.20 10.0 undecidable manual PG 116 0.5439 -0.06 1.8
--.MPR.Z. 1985-02-27T17:04:25.00 10.0 undecidable manual SG 122 0.2553 -0.35 0.6
--.ZOU.Z. 1985-02-27T17:04:25.90 10.0 undecidable manual SG 51 0.2664 0.28 1
--.RCL.Z. 1985-02-27T17:04:23.10 10.0 undecidable manual SG 181 0.2109 -0.87 0.2
--.CAE.Z. 1985-02-27T17:04:23.70 10.0 undecidable manual PG 202 0.3996 0.17 1.9
--.FO1.Z. 1985-02-27T17:04:23.50 10.0 undecidable manual SG 21 0.222 -0.5 0.6
--.BAD.Z. 1985-02-27T17:04:23.70 10.0 undecidable manual PG 109 0.4218 -0.2 1.8
--.BUA.Z. 1985-02-27T17:04:22.90 10.0 undecidable manual PG 117 0.3552 0.27 1.7
--.ZOU.Z. 1985-02-27T17:04:21.20 10.0 undecidable manual PG 51 0.2664 0.13 2
--.BOO.Z. 1985-02-27T17:04:21.30 10.0 undecidable manual PG 101 0.3108 -0.4 1.3
--.FO1.Z. 1985-02-27T17:04:20.00 10.0 undecidable manual PG 21 0.222 -0.14 1.9
--.MPR.Z. 1985-02-27T17:04:20.60 10.0 undecidable manual PG 122 0.2553 -0.32 1.6
--.RCL.Z. 1985-02-27T17:04:19.90 10.0 undecidable manual PG 181 0.2109 -0.22 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download