Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.1 on date 21-04-1985 and time 17:45:17 (Italy) in region 3 km S Resiutta (UD)

A magnitude Md 2.1 earthquake occured in region: 3 km S Resiutta (UD), on

  • 21-04-1985 15:45:17 (UTC)
  • 21-04-1985 17:45:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.3650, 13.2260 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
Resiutta UD 3 309 309
Moggio Udinese UD 6 1714 2023
Resia UD 6 1033 3056
Venzone UD 7 2117 5173
Chiusaforte UD 8 672 5845
Amaro UD 10 823 6668
Bordano UD 11 754 7422
Lusevera UD 11 643 8065
Dogna UD 12 175 8240
Gemona del Friuli UD 12 10964 19204
Montenars UD 12 538 19742
Cavazzo Carnico UD 14 1052 20794
Artegna UD 15 2885 23679
Trasaghis UD 15 2227 25906
Magnano in Riviera UD 15 2336 28242
Taipana UD 15 636 28878
Osoppo UD 17 2936 31814
Tarcento UD 17 9012 40826
Tolmezzo UD 17 10440 51266
Pontebba UD 17 1433 52699
Verzegnis UD 18 863 53562
Nimis UD 19 2740 56302
Zuglio UD 19 595 56897
Buja UD 19 6563 63460
Arta Terme UD 20 2171 65631
Treppo Grande UD 20 1708 67339

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km N of Udine (99169 inhabitants)
63 Km NE of Pordenone (51229 inhabitants)
90 Km NW 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
Bulletin
Rev1000 		Md 2.1 1985-04-21
15:45:17		 46.365 13.226 10 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 5179
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-21 15:45:17 ± 0.103
Latitude 46.3650 ± 0.0058
Longitude 13.2260 ± 0.0088
Depth (km) 10 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5179

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) 935.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.01020
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 5179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CTI.Z. 1985-04-21T15:45:58.10 10.0 undecidable manual SN? 254 1.1322 2.74 0
--.CTI.Z. 1985-04-21T15:45:40.00 10.0 undecidable manual PN 254 1.1322 0.46 0.2
--.VOY.Z. 1985-04-21T15:45:37.50 10.0 undecidable manual SG 125 0.5661 -0.58 0
--.FO1.Z. 1985-04-21T15:45:31.50 10.0 undecidable manual SG 306 0.3774 -0.59 0.1
--.DRE.Z. 1985-04-21T15:45:30.60 10.0 undecidable manual SG 123 0.3441 -0.33 0.3
--.UDI.Z. 1985-04-21T15:45:29.60 10.0 undecidable manual SG 178 0.2997 0.16 0.7
--.COL.Z. 1985-04-21T15:45:28.30 10.0 undecidable manual SG 155 0.2553 0.32 0.3
--.VOY.Z. 1985-04-21T15:45:28.80 10.0 undecidable manual PG 125 0.5661 -0.75 0
--.RBL.Z. 1985-04-21T15:45:27.50 10.0 undecidable manual SG 71 0.2442 -0.25 0.5
--.FO1.Z. 1985-04-21T15:45:26.00 10.0 undecidable manual PG 306 0.3774 -0.09 1.1
--.MPR.Z. 1985-04-21T15:45:26.00 10.0 undecidable manual SG 233 0.1998 -0.41 0.3
--.DRE.Z. 1985-04-21T15:45:25.30 10.0 undecidable manual PG 123 0.3441 -0.13 1.1
--.BUA.Z. 1985-04-21T15:45:25.00 10.0 undecidable manual SG 205 0.1665 -0.05 0.8
--.RBL.Z. 1985-04-21T15:45:24.00 10.0 undecidable manual PG 71 0.2442 0.41 0.9
--.UDI.Z. 1985-04-21T15:45:24.60 10.0 negative manual PG 178 0.2997 0.04 2.5
--.COL.Z. 1985-04-21T15:45:23.90 10.0 undecidable manual PG 155 0.2553 0.17 1.1
--.BAD.Z. 1985-04-21T15:45:23.70 10.0 undecidable manual SG 174 0.1221 -0.26 0.3
--.MPR.Z. 1985-04-21T15:45:22.70 10.0 negative manual PG 233 0.1998 -0.12 2.3
--.BUA.Z. 1985-04-21T15:45:22.10 10.0 negative manual PG 205 0.1665 0.07 2.5
--.BAD.Z. 1985-04-21T15:45:21.50 10.0 negative manual PG 174 0.1221 0.1 2.4
--.POB.Z. 1985-04-21T15:45:21.70 10.0 undecidable manual PG 13 0.1443 -0.14 1.1
--.BOO.Z. 1985-04-21T15:45:20.90 10.0 negative manual PG 242 0.0888 0.03 2.5
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