Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 4.3 on date 12-02-1986 and time 23:57:50 (UTC) in region Crete, Greece [Sea: Greece]

A magnitude M 4.3 earthquake occured in region: Crete, Greece [Sea: Greece], on

  • 12-02-1986 23:57:50 (UTC)
  • 13-02-1986 00:57:50 (UTC +01:00) Italian time
  • 13-02-1986 01:57:50 (UTC +02:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 35.1430, 23.4520 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.

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Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 		M 4.3 1986-02-12
23:57:50		 35.143 23.452 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 22599
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-12 23:57:50 ± 0.549
Latitude 35.1430 ± 0.0564
Longitude 23.4520 ± 0.0315
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 22599

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) 6898.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 202
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.01587
Epicentral distance of station farthest from the epicenter (degree) 0.12199
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitude information

M:4.3

Field Value
Value 4.3
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 22599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:54:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1986-02-13T00:02:39.00 10.0 undecidable manual SN 320 11.6439 0.88 0.4
--.MG9.Z. 1986-02-13T00:01:09.50 10.0 undecidable manual SN 312 7.992 -1.6 0.2
--.RBL.Z. 1986-02-13T00:01:01.00 10.0 undecidable manual PN 331 13.542 -1.52 0.4
--.PZI.Z. 1986-02-13T00:00:50.00 10.0 undecidable manual SN 289 7.1151 -0.27 0.7
--.MSI.Z. 1986-02-13T00:00:47.50 10.0 undecidable manual SN 299 7.0152 -0.47 0.6
--.LCI.Z. 1986-02-13T00:00:40.50 10.0 undecidable manual SN 323 6.6822 0.55 0.6
--.ARV.Z. 1986-02-13T00:00:36.50 10.0 undecidable manual PN 320 11.6439 0.02 1.4
--.SD1.Z. 1986-02-13T00:00:12.00 10.0 undecidable manual PN 315 10.0011 -1.8 0.3
--.DUI.Z. 1986-02-13T00:00:09.50 10.0 undecidable manual PN 317 9.5904 1.32 0.6
--.MSC.Z. 1986-02-13T00:00:07.50 10.0 undecidable manual PN 313 9.5904 -0.66 1.2
--.SGG.Z. 1986-02-13T00:00:06.30 10.0 undecidable manual PN 315 9.4572 -0.14 1.5
--.SOR.Z. 1986-02-12T23:59:59.60 10.0 undecidable manual PN 311 9.0132 -0.62 1.3
--.SGO.Z. 1986-02-12T23:59:52.50 10.0 undecidable manual PN 314 8.4027 0.7 1.3
--.CDM.Z. 1986-02-12T23:59:48.00 10.0 undecidable manual PN 320 8.1807 -0.88 1.1
--.MG9.Z. 1986-02-12T23:59:46.50 10.0 undecidable manual PN 312 7.992 0.26 1.6
--.BAI.Z. 1986-02-12T23:59:43.00 10.0 undecidable manual PN 322 7.8921 -1.76 0.3
--.CSI.Z. 1986-02-12T23:59:38.60 10.0 undecidable manual PN 312 7.326 1.52 0.5
--.ORI.Z. 1986-02-12T23:59:38.50 10.0 undecidable manual PN 315 7.4037 0.39 1.6
--.PE1.Z. 1986-02-12T23:59:36.50 10.0 undecidable manual PN 323 7.3815 -1.38 0.7
--.PZI.Z. 1986-02-12T23:59:34.50 10.0 undecidable manual PN 289 7.1151 0.29 1.6
--.ROI.Z. 1986-02-12T23:59:33.40 10.0 undecidable manual PN 312 7.0263 0.38 1.6
--.MSI.Z. 1986-02-12T23:59:33.50 10.0 undecidable manual PN 299 7.0152 0.62 1.4
--.GR9.Z. 1986-02-12T23:59:29.50 10.0 undecidable manual PN 306 6.6933 1.1 0.9
--.LCI.Z. 1986-02-12T23:59:28.00 10.0 undecidable manual PN 323 6.6822 -0.25 1.7
--.SRN.Z. 1986-02-12T23:59:13.00 10.0 undecidable manual PN 332 5.4612 1.52 0.5
--.KZN.-. 1986-02-12T23:59:10.50 10.0 undecidable manual PN 347 5.3169 0.94 1.1
--.PRK.-. 1986-02-12T23:58:59.90 10.0 undecidable manual PN 29 4.662 -0.63 1.4
--.ATH.-. 1986-02-12T23:58:36.50 10.0 undecidable manual PN 5 2.8305 1.2 0.8
--.NPS.-. 1986-02-12T23:58:20.40 10.0 undecidable manual PN 86 1.7649 -0.24 1.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download