Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.3 on date 18-02-1985 and time 21:33:01 (Italy) in region 5 km N San Pietro di Cadore (BL)

A magnitude Md 2.3 earthquake occured in region: 5 km N San Pietro di Cadore (BL), on

  • 18-02-1985 20:33:01 (UTC)
  • 18-02-1985 21:33:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.6150, 12.5760 at 0 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
San Pietro di Cadore BL 5 1624 1624
San Nicolò di Comelico BL 5 406 2030
Comelico Superiore BL 5 2238 4268
Santo Stefano di Cadore BL 7 2609 6877
Danta di Cadore BL 7 463 7340
Sappada BL 10 1317 8657
Auronzo di Cadore BL 12 3350 12007
Vigo di Cadore BL 15 1440 13447
Forni Avoltri UD 16 588 14035
Lorenzago di Cadore BL 17 549 14584
Lozzo di Cadore BL 18 1383 15967
Sauris UD 19 416 16383
Sesto BZ 20 1893 18276
Prato Carnico UD 20 904 19180

Municipalities with at least 50000 inhabitants

An earthquake occurred to
74 Km N of Pordenone (51229 inhabitants)
80 Km NW of Udine (99169 inhabitants)
94 Km E of Bolzano (106441 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 2.4 		1985-02-18
20:33:01		 46.615 12.576 0 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 1969
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-18 20:33:01 ± 0.398
Latitude 46.6150 ± 0.0139
Longitude 12.5760 ± 0.0189
Depth (km) 0 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1969

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) 2114.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 285
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
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) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00769
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 1969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:59

M:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1969
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
--.DRE.Z. 1985-02-18T20:33:32.40 10.0 undecidable manual SG 120 0.8547 -0.55 0.2
--.COL.Z. 1985-02-18T20:33:29.80 10.0 undecidable manual SG 130 0.7326 0.85 0
--.BAD.Z. 1985-02-18T20:33:25.10 10.0 undecidable manual SG 129 0.5883 0.59 0.2
--.BUA.Z. 1985-02-18T20:33:22.30 10.0 undecidable manual SG 136 0.5439 -0.37 0.3
--.MPR.Z. 1985-02-18T20:33:20.20 10.0 undecidable manual SG 142 0.4662 0.55 0.3
--.DRE.Z. 1985-02-18T20:33:19.40 10.0 undecidable manual PG 120 0.8547 -0.3 1.1
--.RCL.Z. 1985-02-18T20:33:19.40 10.0 undecidable manual SG 173 0.444 0.18 0.7
--.BOO.Z. 1985-02-18T20:33:18.80 10.0 undecidable manual SG 129 0.4551 -0.73 0
--.RBL.Z. 1985-02-18T20:33:17.00 10.0 undecidable manual PG 104 0.6993 0.16 1.4
--.COL.Z. 1985-02-18T20:33:17.70 10.0 undecidable manual PG 130 0.7326 0.32 1
--.BAD.Z. 1985-02-18T20:33:14.70 10.0 undecidable manual PG 129 0.5883 -0.13 1.8
--.BUA.Z. 1985-02-18T20:33:13.40 10.0 undecidable manual PG 136 0.5439 -0.36 1.1
--.ZOU.Z. 1985-02-18T20:33:12.20 10.0 undecidable manual SG 102 0.2775 -0.14 1
--.MPR.Z. 1985-02-18T20:33:12.00 10.0 undecidable manual PG 142 0.4662 -0.02 2
--.RCL.Z. 1985-02-18T20:33:11.90 10.0 undecidable manual PG 173 0.444 0.13 1.9
--.BOO.Z. 1985-02-18T20:33:11.70 10.0 undecidable manual PG 129 0.4551 -0.25 1.5
--.FO1.Z. 1985-02-18T20:33:07.50 10.0 undecidable manual SG 98 0.1332 0.43 0.7
--.ZOU.Z. 1985-02-18T20:33:07.70 10.0 undecidable manual PG 102 0.2775 -0.09 1.9
--.FO1.Z. 1985-02-18T20:33:05.00 10.0 undecidable manual PG 98 0.1332 0.24 1.7
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