Earthquake with magnitude of Md 3.1 on date 28-02-1985 and time 09:59:16 (Italy) in region Costa Croata Settentrionale (CROAZIA)

A magnitude Md 3.1 earthquake occured in region: Costa Croata Settentrionale (CROAZIA), on

  • 28-02-1985 08:59:16 (UTC)
  • 28-02-1985 09:59:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.29, 14.68 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.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
82 Km E 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
Rev 1000 Md 3.1
M 3.2
1985-02-28
08:59:16
45.29 14.68 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 2749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-28 08:59:16 ± 0.571
Latitude 45.29 ± 0.02
Longitude 14.68 ± 0.06
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2749

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) 5485.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 213
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00429
Epicentral distance of station farthest from the epicenter (degree) 0.03756
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 2749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:37

M:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 2749
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
--.VAI.N. 1985-02-28T09:01:04.50 10.0 undecidable manual SN 279 0.0376 -1.52 0.2
--.PO9.Z. 1985-02-28T09:00:38.50 10.0 undecidable manual SN 205 0.0269 0.58 0.5
--.BAL.Z. 1985-02-28T08:00:41.50 10.0 undecidable manual SG
--.PAN.Z. 1985-02-28T08:00:33.00 10.0 undecidable manual SG
--.DDS.Z. 1985-02-28T08:00:31.50 10.0 undecidable manual SG
--.VAI.N. 1985-02-28T09:00:19.50 10.0 undecidable manual PN 279 0.0376 -0.15 1.1
--.CTI.Z. 1985-02-28T09:00:19.50 10.0 undecidable manual SN 290 0.0202 -0.73 0.6
--.CAE.Z. 1985-02-28T09:00:08.70 10.0 undecidable manual SN 295 0.0155 0.94 0.7
--.RCL.Z. 1985-02-28T09:00:08.00 10.0 undecidable manual SN 301 0.0149 1.76 0.3
--.POB.Z. 1985-02-28T09:00:05.30 10.0 undecidable manual SN 321 0.014 1.36 0.5
--.BOO.Z. 1985-02-28T09:00:04.20 10.0 undecidable manual SN 313 0.0135 1.61 0.3
--.PO9.Z. 1985-02-28T09:00:04.50 10.0 undecidable manual PN 205 0.0269 1.08 0.9
--.MPR.Z. 1985-02-28T09:00:04.70 10.0 undecidable manual SN 309 0.0136 1.91 0.2
--.RNI.Z. 1985-02-28T09:00:02.80 10.0 undecidable manual PN 284 0.0261 0.59 1.2
--.BUA.Z. 1985-02-28T09:00:02.30 10.0 undecidable manual SN 310 0.0128 1.59 0.4
--.BAD.Z. 1985-02-28T09:00:00.90 10.0 undecidable manual SN 313 0.0124 1.38 0.5
--.RBL.Z. 1985-02-28T08:59:59.50 10.0 undecidable manual SN 326 0.0124 -0.21 1.1
--.BAL.Z. 1985-02-28T08:59:59.70 10.0 undecidable manual PN 281 0.0244 0.04 1.5
--.CH1.Z. 1985-02-28T08:59:57.50 10.0 undecidable manual PN 230 0.0231 -0.06 1.5
--.PAN.Z. 1985-02-28T08:59:56.30 10.0 undecidable manual PN 288 0.0223 -0.02 1.6
--.COL.Z. 1985-02-28T08:59:55.60 10.0 undecidable manual SN 312 0.0111 -0.62 1
--.DDS.Z. 1985-02-28T08:59:55.80 10.0 undecidable manual PN 284 0.0226 -1.04 1
--.CTI.Z. 1985-02-28T08:59:53.00 10.0 undecidable manual PN 290 0.0202 -0.21 1.6
--.DRE.Z. 1985-02-28T08:59:52.80 10.0 undecidable manual SN 320 0.0102 -1.08 0.7
--.FO1.Z. 1985-02-28T08:59:48.00 10.0 undecidable manual PN 315 0.0167 0.21 1.8
--.ZOU.Z. 1985-02-28T08:59:46.70 10.0 undecidable manual PN 317 0.0155 0.55 1.6
--.CAE.Z. 1985-02-28T08:59:45.40 10.0 undecidable manual PN 295 0.0155 -0.61 1.6
--.POB.Z. 1985-02-28T08:59:44.50 10.0 undecidable manual PN 321 0.014 0.7 1.4
--.RCL.Z. 1985-02-28T08:59:44.60 10.0 undecidable manual PN 301 0.0149 -0.53 1.7
--.MPR.Z. 1985-02-28T08:59:43.30 10.0 undecidable manual PN 309 0.0136 0.16 1.8
--.RBL.Z. 1985-02-28T08:59:42.20 10.0 negative manual PN 326 0.0124 0.84 2.6
--.BUA.Z. 1985-02-28T08:59:42.30 10.0 undecidable manual PN 310 0.0128 0.36 1.7
--.BOO.Z. 1985-02-28T08:59:42.80 10.0 undecidable manual PN 313 0.0135 -0.22 1.8
--.BAD.Z. 1985-02-28T08:59:40.80 10.0 undecidable manual PN 313 0.0124 -0.45 1.7
--.COL.Z. 1985-02-28T08:59:37.70 10.0 undecidable manual PN 312 0.0111 -1.65 0.7
--.DRE.Z. 1985-02-28T08:59:35.80 10.0 undecidable manual PN 320 0.0102 -2.2 0.3
--.VOY.Z. 1985-02-28T08:59:32.40 10.0 undecidable manual PG 323 0.0083 -2.07 0.4
--.LJU.Z. 1985-02-28T08:59:32.40 10.0 undecidable manual PG 351 0.0068 0.96 1.2
--.TRI.Z. 1985-02-28T08:59:28.70 10.0 undecidable manual PG 302 0.0069 -2.9 0.1
--.CEY.Z. 1985-02-28T08:59:25.30 10.0 undecidable manual PG 337 0.0043 -1 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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