Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 4.0 on date 12-04-1989 and time 15:53:31 (Italy) in region Greece

A magnitude M 4.0 earthquake occured in region: Greece, on

  • 12-04-1989 13:53:31 (UTC)
  • 12-04-1989 15:53:31 (UTC +02:00) Italian time
  • 12-04-1989 16:53:31 (UTC +03:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 38.2000, 22.1560 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 4.0 1989-04-12
13:53:31		 38.2 22.156 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 89769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-04-12 13:53:31 ± 0.31
Latitude 38.2000 ± 0.0387
Longitude 22.1560 ± 0.0332
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 89769

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) 5188.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00931
Epicentral distance of station farthest from the epicenter (degree) 0.08937
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitude information

M:4.0

Field Value
Value 4.0
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 89769
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
--.VOY.Z. 1989-04-12T13:57:40.90 10.0 undecidable manual SN 324 9.9234 2.66 0
--.VOY.Z. 1989-04-12T13:55:53.50 10.0 undecidable manual PN 324 9.9234 -0.46 1.1
--.LJU.Z. 1989-04-12T13:55:47.00 10.0 undecidable manual PN! 326 9.6459 -3.21 0
--.CEY.Z. 1989-04-12T13:55:46.00 10.0 undecidable manual PN 325 9.4572 -1.57 0.6
--.VBY.Z. 1989-04-12T13:55:37.50 10.0 undecidable manual PN 327 8.9133 -2.56 0.2
--.MNS.Z. 1989-04-12T13:55:31.50 10.0 undecidable manual PN 303 8.325 -0.59 1.1
--.SDI.Z. 1989-04-12T13:55:18.61 10.0 undecidable manual PN 301 7.2816 0.98 0.9
--.DUI.Z. 1989-04-12T13:55:11.50 10.0 undecidable manual PN 302 6.8265 0.1 1.4
--.BSS.Z. 1989-04-12T13:55:03.30 10.0 undecidable manual PN 296 6.2049 0.21 1.4
--.SGO.Z. 1989-04-12T13:54:57.11 10.0 undecidable manual PN 296 5.772 0.06 1.5
--.MGR.Z. 1989-04-12T13:54:53.00 10.0 undecidable manual PN 292 5.4612 0.38 1.5
--.CDM.Z. 1989-04-12T13:54:48.50 10.0 undecidable manual PN 304 5.3502 -2.68 0.2
--.MMN.Z. 1989-04-12T13:54:47.00 10.0 undecidable manual PN 291 5.0727 -0.21 1.6
--.TDS.Z. 1989-04-12T13:54:45.11 10.0 undecidable manual PN 289 4.7397 2.32 0.2
--.CSI.Z. 1989-04-12T13:54:45.68 10.0 undecidable manual PN 290 4.8174 1.95 0.4
--.BRT.Z. 1989-04-12T13:54:40.00 10.0 undecidable manual PN 306 4.6842 -1.99 0.5
--.NPS.Z. 1989-04-12T13:54:33.00 10.0 undecidable manual PN 135 4.0293 0.05 1.6
--.RDO.Z. 1989-04-12T13:54:32.00 10.0 undecidable manual PN 40 3.9183 0.52 1.3
--.LCI.Z. 1989-04-12T13:54:30.00 10.0 undecidable manual PN 305 3.7851 0.47 1.4
--.PRK.Z. 1989-04-12T13:54:23.30 10.0 undecidable manual PN 70 3.3744 -0.57 1.5
--.VAM.Z. 1989-04-12T13:54:20.00 10.0 undecidable manual PN 147 3.0858 0 1.6
--.PLG.Z. 1989-04-12T13:54:10.50 10.0 undecidable manual PN 24 2.3865 0.14 1.5
--.KEK.Z. 1989-04-12T13:54:09.50 10.0 undecidable manual PN 310 2.3754 -0.66 1.4
--.KZN.Z. 1989-04-12T13:54:07.00 10.0 undecidable manual PN 351 2.1201 0.26 1.5
--.NEO.Z. 1989-04-12T13:53:57.30 10.0 undecidable manual PN 36 1.3764 0.75 1.1
--.ATH.Z. 1989-04-12T13:53:54.50 10.0 undecidable manual PN 99 1.2432 -0.19 1.6
--.ITM.Z. 1989-04-12T13:53:45.20 10.0 undecidable manual PN! 190 1.0323 -6.58 0
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