ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.2 on date 14-02-1985 and time 11:07:23 (Italy) in region Golfo di Trieste (Trieste, Gorizia, Udine)

A magnitude Md 2.2 earthquake occured in region: Golfo di Trieste (Trieste, Gorizia, Udine), on

  • 14-02-1985 10:07:23 (UTC)
  • 14-02-1985 11:07:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.66, 13.69 at 9 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
Trieste TS 6 204420 204420
Muggia TS 9 13137 217557
Sgonico TS 9 2062 219619
Monrupino TS 10 893 220512
Duino-Aurisina TS 11 8561 229073
San Dorligo della Valle-Dolina TS 14 5801 234874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km W of Trieste (204420 inhabitants)
57 Km SE of Udine (99169 inhabitants)
86 Km E 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 2.2
M 2.1
1985-02-14
10:07:23
45.66 13.69 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1699
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-14 10:07:23 ± 0.413
Latitude 45.66 ± 0.03
Longitude 13.69 ± 0.02
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1699

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) 3460.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 238
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00057
Epicentral distance of station farthest from the epicenter (degree) 0.01012
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 1699
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:45

M:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1699
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
--.FO1.Z. 1985-02-14T10:07:46.00 10.0 undecidable manual PN 326 0.0101 1.07 0.1
--.DRE.Z. 1985-02-14T10:07:42.50 10.0 undecidable manual SG 356 0.0045 0.71 0.2
--.VOY.Z. 1985-02-14T10:07:38.30 10.0 undecidable manual SG 20 0.0035 0.29 0.7
--.MPR.Z. 1985-02-14T10:07:38.40 10.0 undecidable manual PG 319 0.0068 -0.15 1
--.BAD.Z. 1985-02-14T10:07:36.30 10.0 undecidable manual PG 331 0.0058 -0.3 1
--.COL.Z. 1985-02-14T10:07:34.10 10.0 undecidable manual PG 335 0.0046 -0.01 1.3
--.CEY.Z. 1985-02-14T10:07:34.20 10.0 undecidable manual PG 81 0.0046 0.12 1.3
--.DRE.Z. 1985-02-14T10:07:33.40 10.0 undecidable manual PG 356 0.0045 -0.57 0.6
--.VOY.Z. 1985-02-14T10:07:31.40 10.0 negative manual PG 20 0.0035 -0.39 1.9
--.TRI.Z. 1985-02-14T10:07:28.00 10.0 undecidable manual SG 47 0.0006 0.66 0.3
--.TRI.Z. 1985-02-14T10:07:25.50 10.0 negative manual PG 47 0.0006 -0.13 2.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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