Earthquake with magnitude of Md 2.4 on date 18-02-1985 and time 17:33:01 (UTC) in region 4 km NE Sappada (BL)

A magnitude Md 2.4 earthquake occured in region: 4 km NE Sappada (BL), on

  • 18-02-1985 17:33:01 (UTC)
  • 18-02-1985 18:33:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.6, 12.72 at 12 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 5 1317 1317
Forni Avoltri UD 5 588 1905
San Pietro di Cadore BL 10 1624 3529
Prato Carnico UD 11 904 4433
Rigolato UD 12 448 4881
Santo Stefano di Cadore BL 14 2609 7490
San Nicolò di Comelico BL 15 406 7896
Sauris UD 15 416 8312
Comeglians UD 15 516 8828
Comelico Superiore BL 15 2238 11066
Danta di Cadore BL 15 463 11529
Ovaro UD 17 1922 13451
Ravascletto UD 18 536 13987

Municipalities with at least 50000 inhabitants

An earthquake occurred to
72 Km NW of Udine (99169 inhabitants)
72 Km N 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 2.4
M 2.6
1985-02-18
17:33:01
46.6 12.72 12 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1929
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-18 17:33:01 ± 0.572
Latitude 46.60 ± 0.03
Longitude 12.72 ± 0.03
Depth (km) 12 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1929

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) 3803.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 224
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.00826
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 1929
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 1929
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. 1985-02-18T17:33:27.90 10.0 undecidable manual SG 123 0.0069 0.25 0.5
--.CTI.Z. 1985-02-18T17:33:20.50 10.0 undecidable manual PG 233 0.0083 1.29 0.5
--.BAD.Z. 1985-02-18T17:33:20.00 10.0 undecidable manual SG 134 0.0046 0.54 0.5
--.BUA.Z. 1985-02-18T17:33:19.70 10.0 undecidable manual SG 143 0.0042 1.52 0.1
--.RCL.Z. 1985-02-18T17:33:16.90 10.0 undecidable manual SG 185 0.004 -0.25 0.6
--.DRE.Z. 1985-02-18T17:33:16.80 10.0 undecidable manual PG 123 0.0069 0.39 1.3
--.BOO.Z. 1985-02-18T17:33:15.70 10.0 undecidable manual SG 136 0.0034 0.36 0.7
--.MPR.Z. 1985-02-18T17:33:15.10 10.0 undecidable manual SG 152 0.0036 -0.87 0.4
--.BUA.Z. 1985-02-18T17:33:11.50 10.0 undecidable manual PG 143 0.0042 0.56 1.6
--.BAD.Z. 1985-02-18T17:33:11.90 10.0 undecidable manual PG 134 0.0046 0.21 1.9
--.BOO.Z. 1985-02-18T17:33:09.00 10.0 undecidable manual PG 136 0.0034 -0.3 2
--.RCL.Z. 1985-02-18T17:33:09.80 10.0 undecidable manual PG 185 0.004 -0.55 1.1
--.MPR.Z. 1985-02-18T17:33:08.80 10.0 undecidable manual PG 152 0.0036 -0.86 0.8
--.ZOU.Z. 1985-02-18T17:33:08.80 10.0 undecidable manual SG 103 0.0016 -0.11 0.9
--.FO1.Z. 1985-02-18T17:33:06.00 10.0 undecidable manual SG 97 0.0003 0.53 0.7
--.ZOU.Z. 1985-02-18T17:33:04.80 10.0 undecidable manual PG 103 0.0016 -0.79 1.2
--.FO1.Z. 1985-02-18T17:33:03.50 10.0 undecidable manual PG 97 0.0003 -0.11 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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