Earthquake with magnitude of M 4.2 on date 31-03-1986 and time 23:44:30 (UTC) in region Crete, Greece [Sea: Greece]

A magnitude M 4.2 earthquake occured in region: Crete, Greece [Sea: Greece], on

  • 31-03-1986 23:44:30 (UTC)
  • 01-04-1986 01:44:30 (UTC +02:00) Italian time
  • 01-04-1986 02:44:30 (UTC +03:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 34.59, 24.6 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

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
Rev 1000 M 4.2 1986-03-31
23:44:30
34.59 24.6 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 25149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-03-31 23:44:30 ± 1.189
Latitude 34.59 ± 0.10
Longitude 24.60 ± 0.05
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 25149

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) 12350.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 239
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.4
Epicentral distance of station closest to the epicenter (degree) 0.00955
Epicentral distance of station farthest from the epicenter (degree) 0.16797
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitude information

M:4.2

Field Value
Value 4.2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 25149
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 Takeoff_angle Residual Weight
--.VOY.Z. 1986-03-31T23:50:11.80 10.0 undecidable manual SN 328 0.1264 -3.12 0.2
--.SGG.Z. 1986-03-31T23:48:57.20 10.0 undecidable manual SN 314 0.0948 5.92 0
--.MOX.Z. 1986-03-31T23:48:47.00 10.0 undecidable manual P 334 0.168 -5.69 0
--.SGO.Z. 1986-03-31T23:48:26.00 10.0 undecidable manual SN 312 0.0852 -0.08 0.6
--.MG9.Z. 1986-03-31T23:48:18.00 10.0 undecidable manual SN 311 0.0817 1.41 0.6
--.ORI.Z. 1986-03-31T23:48:03.50 10.0 undecidable manual SN 313 0.0763 1.21 0.6
--.ZST.Z. 1986-03-31T23:48:02.20 10.0 undecidable manual P 340 0.1319 4.62 0.4
--.CTI.Z. 1986-03-31T23:48:01.50 10.0 undecidable manual P 324 0.1361 -2.44 0.7
--.RBL.Z. 1986-03-31T23:47:52.50 10.0 undecidable manual P 329 0.1306 -3.13 0.6
--.GR9.Z. 1986-03-31T23:47:47.00 10.0 undecidable manual SN 305 0.0701 0.98 0.6
--.VOY.Z. 1986-03-31T23:47:45.50 10.0 undecidable manual PN 328 0.1264 -3.79 0.4
--.LCI.Z. 1986-03-31T23:47:44.00 10.0 undecidable manual SN 320 0.0694 -0.14 0.6
--.ARV.Z. 1986-03-31T23:47:31.00 10.0 undecidable manual PN? 319 0.1142 0.32 0.5
--.SRN.Z. 1986-03-31T23:47:18.20 10.0 undecidable manual SN 327 0.0578 4.51 0.3
--.SGG.Z. 1986-03-31T23:47:00.90 10.0 undecidable manual PN 314 0.0948 -0.1 1.4
--.SOR.Z. 1986-03-31T23:46:53.70 10.0 undecidable manual PN 310 0.0908 -1.29 1.3
--.SGO.Z. 1986-03-31T23:46:45.50 10.0 undecidable manual PN 312 0.0852 -0.95 1.3
--.GIB.Z. 1986-03-31T23:46:44.00 10.0 undecidable manual PN 295 0.0825 1.8 1.2
--.MG9.Z. 1986-03-31T23:46:40.00 10.0 undecidable manual PN 311 0.0817 -0.97 1.4
--.MMN.Z. 1986-03-31T23:46:35.70 10.0 undecidable manual PN 311 0.0779 0.45 1.5
--.ORI.Z. 1986-03-31T23:46:34.50 10.0 undecidable manual PN 313 0.0763 1.79 1.2
--.BRT.Z. 1986-03-31T23:46:33.50 10.0 undecidable manual PN 319 0.0775 -1.09 1.3
--.BCI.Z. 1986-03-31T23:46:32.70 10.0 undecidable manual PN 337 0.0769 -0.98 1.3
--.PZI.Z. 1986-03-31T23:46:30.00 10.0 undecidable manual PN 290 0.0737 1.09 1.3
--.SDA.Z. 1986-03-31T23:46:29.50 10.0 undecidable manual PN 333 0.0758 -2.66 0.9
--.CZI.Z. 1986-03-31T23:46:27.30 10.0 undecidable manual PN 307 0.0737 -1.59 1.3
--.GR9.Z. 1986-03-31T23:46:25.00 10.0 undecidable manual PN 305 0.0701 1.68 1.2
--.SKO.Z. 1986-03-31T23:46:25.00 10.0 undecidable manual PN 343 0.07 1.75 1.3
--.PHP.Z. 1986-03-31T23:46:23.20 10.0 undecidable manual PN 337 0.0703 -0.43 1.4
--.LCI.Z. 1986-03-31T23:46:22.50 10.0 undecidable manual PN 320 0.0694 0.27 1.5
--.KBN.Z. 1986-03-31T23:46:21.20 10.0 undecidable manual PN 335 0.0607 12.2 0
--.OHR.Z. 1986-03-31T23:46:13.50 10.0 undecidable manual PN 337 0.0645 -1.39 1.3
--.VAY.Z. 1986-03-31T23:46:11.00 10.0 undecidable manual PN 347 0.0622 -0.31 1.4
--.SRN.Z. 1986-03-31T23:46:04.90 10.0 undecidable manual PN? 327 0.0578 0.24 0.6
--.KZN.Z. 1986-03-31T23:46:00.90 10.0 undecidable manual PN 340 0.0552 0.24 1.5
--.PRK.Z. 1986-03-31T23:45:42.90 10.0 undecidable manual PN 16 0.0435 0.05 1.5
--.VLS.Z. 1986-03-31T23:45:41.90 10.0 undecidable manual PN 319 0.0434 -0.68 1.4
--.ATH.Z. 1986-03-31T23:45:24.50 10.0 undecidable manual PN 349 0.031 0.7 1.5
--.NPS.Z. 1986-03-31T23:44:51.50 10.0 positive manual PN 51 0.0096 0.41 2.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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