Earthquake with magnitude of Md 2.3 on date 18-02-1985 and time 19:00:08 (UTC) in region 5 km SE Sappada (BL)

A magnitude Md 2.3 earthquake occured in region: 5 km SE Sappada (BL), on

  • 18-02-1985 19:00:08 (UTC)
  • 18-02-1985 20:00:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.52, 12.71 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
Sappada BL 6 1317 1317
Sauris UD 6 416 1733
Prato Carnico UD 7 904 2637
Forni Avoltri UD 9 588 3225
San Pietro di Cadore BL 11 1624 4849
Rigolato UD 12 448 5297
Comeglians UD 12 516 5813
Santo Stefano di Cadore BL 13 2609 8422
Ovaro UD 13 1922 10344
Ampezzo UD 13 1006 11350
Forni di Sotto UD 14 600 11950
Forni di Sopra UD 14 993 12943
Danta di Cadore BL 15 463 13406
San Nicolò di Comelico BL 15 406 13812
Raveo UD 16 458 14270
Socchieve UD 16 908 15178
Comelico Superiore BL 17 2238 17416
Ravascletto UD 17 536 17952
Enemonzo UD 18 1319 19271
Vigo di Cadore BL 18 1440 20711
Preone UD 19 246 20957
Lorenzago di Cadore BL 19 549 21506

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km N of Pordenone (51229 inhabitants)
65 Km NW of Udine (99169 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 2.3
M 2.6
1985-02-18
19:00:08
46.52 12.71 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-18 19:00:08 ± 0.187
Latitude 46.52 ± 0.01
Longitude 12.71 ± 0.02
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 1939

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) 1476.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.00777
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 1939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:57

M:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1939
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 Takeoff_angle Residual Weight
--.DRE.Z. 1985-02-18T19:00:34.10 10.0 undecidable manual SG 117 0.0066 -0.58 0.2
--.CTI.Z. 1985-02-18T19:00:26.00 10.0 undecidable manual PG 237 0.0078 0.02 1.4
--.BAD.Z. 1985-02-18T19:00:26.80 10.0 undecidable manual SG 127 0.0041 0.7 0.1
--.BUA.Z. 1985-02-18T19:00:24.60 10.0 undecidable manual SG 136 0.0037 0.33 0.6
--.DRE.Z. 1985-02-18T19:00:23.10 10.0 undecidable manual PG 117 0.0066 -0.37 1
--.RCL.Z. 1985-02-18T19:00:21.70 10.0 undecidable manual SG 185 0.0032 -0.48 0.4
--.BOO.Z. 1985-02-18T19:00:21.60 10.0 undecidable manual SG 126 0.003 0.38 0.5
--.MPR.Z. 1985-02-18T19:00:20.20 10.0 undecidable manual SG 145 0.003 -1.11 0
--.BAD.Z. 1985-02-18T19:00:18.50 10.0 undecidable manual PG 127 0.0041 -0.02 2
--.BUA.Z. 1985-02-18T19:00:17.80 10.0 undecidable manual PG 136 0.0037 0.34 1.4
--.BOO.Z. 1985-02-18T19:00:16.10 10.0 undecidable manual PG 126 0.003 0.41 1.2
--.RCL.Z. 1985-02-18T19:00:16.50 10.0 undecidable manual PG 185 0.0032 0.25 1.7
--.MPR.Z. 1985-02-18T19:00:15.70 10.0 undecidable manual PG 145 0.003 -0.05 2
--.FO1.Z. 1985-02-18T19:00:12.00 10.0 undecidable manual SG 34 0.0007 0.09 1.2
--.FO1.Z. 1985-02-18T19:00:10.00 10.0 undecidable manual PG 34 0.0007 -0.32 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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