Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.4 on date 19-02-1985 and time 00:35:39 (Italy) in region 2 km W Gemona del Friuli (UD)

A magnitude Md 2.4 earthquake occured in region: 2 km W Gemona del Friuli (UD), on

  • 18-02-1985 23:35:39 (UTC)
  • 19-02-1985 00:35:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.2870, 13.1170 at 7 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
Gemona del Friuli UD 2 10964 10964
Trasaghis UD 3 2227 13191
Bordano UD 3 754 13945
Osoppo UD 5 2936 16881
Venzone UD 6 2117 18998
Artegna UD 6 2885 21883
Montenars UD 6 538 22421
Magnano in Riviera UD 8 2336 24757
Buja UD 9 6563 31320
Amaro UD 10 823 32143
Cavazzo Carnico UD 11 1052 33195
Treppo Grande UD 11 1708 34903
Lusevera UD 11 643 35546
Tarcento UD 11 9012 44558
Majano UD 12 5945 50503
Forgaria nel Friuli UD 13 1786 52289
Vito d'Asio PN 14 769 53058
Colloredo di Monte Albano UD 14 2223 55281
Cassacco UD 14 2938 58219
Resiutta UD 14 309 58528
Nimis UD 15 2740 61268
Verzegnis UD 15 863 62131
Moggio Udinese UD 15 1714 63845
Tolmezzo UD 15 10440 74285
Tricesimo UD 16 7600 81885
San Daniele del Friuli UD 16 8013 89898
Ragogna UD 16 2909 92807
Clauzetto PN 17 380 93187
Pinzano al Tagliamento PN 17 1525 94712
Resia UD 18 1033 95745
Taipana UD 18 636 96381
Attimis UD 18 1805 98186
Reana del Rojale UD 18 4966 103152
Moruzzo UD 19 2456 105608
Pagnacco UD 19 5044 110652
Castelnovo del Friuli PN 19 880 111532
Rive d'Arcano UD 19 2444 113976
Fagagna UD 19 6385 120361

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Udine (99169 inhabitants)
51 Km NE of Pordenone (51229 inhabitants)
87 Km NW of Trieste (204420 inhabitants)
96 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 2.4
M 2.7 		1985-02-18
23:35:39		 46.287 13.117 7 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 1979
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-18 23:35:39 ± 0.191
Latitude 46.2870 ± 0.0114
Longitude 13.1170 ± 0.0159
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1979

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) 1765.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00024
Epicentral distance of station farthest from the epicenter (degree) 0.01255
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 1979
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:59

M:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1979
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(km) Takeoff_angle Residual Weight
--.DDS.Z. 1985-02-18T23:36:25.50 10.0 undecidable manual SN 253 1.3875 1.39 0.1
--.PAN.Z. 1985-02-18T23:36:23.80 10.0 undecidable manual SN 259 1.2654 2.6 0
--.CTI.Z. 1985-02-18T23:36:15.50 10.0 undecidable manual SG 257 1.0323 -0.08 0.5
--.DDS.Z. 1985-02-18T23:36:06.50 10.0 undecidable manual PN 253 1.3875 1.17 0.3
--.PAN.Z. 1985-02-18T23:36:05.30 10.0 undecidable manual PN 259 1.2654 1.66 0.1
--.CTI.Z. 1985-02-18T23:36:02.00 10.0 undecidable manual PG? 257 1.0323 1.6 0.1
--.CAE.Z. 1985-02-18T23:35:59.70 10.0 undecidable manual SG 239 0.5439 0 0.8
--.ERT.Z. 1985-02-18T23:35:57.00 10.0 undecidable manual SG 269 0.4995 -1.52 0.1
--.DRE.Z. 1985-02-18T23:35:54.20 10.0 undecidable manual SG 107 0.3774 -0.16 0.8
--.FO1.Z. 1985-02-18T23:35:53.50 10.0 undecidable manual SG 323 0.3774 -0.92 0.4
--.RCL.Z. 1985-02-18T23:35:52.40 10.0 undecidable manual SG 248 0.3441 -0.77 0.5
--.ZOU.Z. 1985-02-18T23:35:51.30 10.0 undecidable manual SG 339 0.2775 0.31 0.8
--.CAE.Z. 1985-02-18T23:35:50.80 10.0 undecidable manual PG 239 0.5439 -0.44 1.1
--.POB.Z. 1985-02-18T23:35:49.50 10.0 undecidable manual SG 25 0.2442 -0.16 0.6
--.COL.Z. 1985-02-18T23:35:49.20 10.0 undecidable manual SG 130 0.2331 0.05 0.8
--.UDI.Z. 1985-02-18T23:35:48.00 10.0 undecidable manual SG 159 0.2331 -1.14 0.3
--.ERT.Z. 1985-02-18T23:35:48.90 10.0 undecidable manual PG 269 0.4995 -1.65 0.2
--.DRE.Z. 1985-02-18T23:35:47.40 10.0 undecidable manual PG 107 0.3774 -0.75 0.9
--.FO1.Z. 1985-02-18T23:35:47.50 10.0 undecidable manual PG 323 0.3774 -0.69 1
--.RCL.Z. 1985-02-18T23:35:46.60 10.0 undecidable manual PG 248 0.3441 -0.86 0.8
--.ZOU.Z. 1985-02-18T23:35:46.00 10.0 undecidable manual PG 339 0.2775 -0.2 1.4
--.COL.Z. 1985-02-18T23:35:45.10 10.0 negative manual PG 130 0.2331 -0.04 2.8
--.BAD.Z. 1985-02-18T23:35:45.50 10.0 undecidable manual SG 120 0.0999 1.2 0.3
--.POB.Z. 1985-02-18T23:35:45.20 10.0 undecidable manual PG 25 0.2442 -0.23 1.4
--.UDI.Z. 1985-02-18T23:35:44.80 10.0 negative manual PG 159 0.2331 -0.34 2.6
--.MPR.Z. 1985-02-18T23:35:44.30 10.0 undecidable manual SG 242 0.0999 0.05 0.8
--.MPR.Z. 1985-02-18T23:35:42.20 10.0 positive manual PG 242 0.0999 -0.11 2.8
--.BAD.Z. 1985-02-18T23:35:42.60 10.0 negative manual PG 120 0.0999 0.26 2.7
--.BOO.Z. 1985-02-18T23:35:41.80 10.0 positive manual PG 340 0.0222 0.49 2.3
--.BUA.Z. 1985-02-18T23:35:41.90 10.0 negative manual PG 176 0.0666 0.13 2.8
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