Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 4.1 on date 23-05-1989 and time 17:19:08 (UTC) in region Costa Greca Ionica (GRECIA)

A magnitude M 4.1 earthquake occured in region: Costa Greca Ionica (GRECIA), on

  • 23-05-1989 17:19:08 (UTC)
  • 23-05-1989 19:19:08 (UTC +02:00) Italian time
  • 23-05-1989 20:19:08 (UTC +03:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 37.8050, 20.9200 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 4.1 1989-05-23
17:19:08		 37.805 20.92 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 91949
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-05-23 17:19:08 ± 0.958
Latitude 37.8050 ± 0.0622
Longitude 20.9200 ± 0.0748
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 91949

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) 9539.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 295
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.02995
Epicentral distance of station farthest from the epicenter (degree) 0.09576
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitude information

M:4.1

Field Value
Value 4.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 91949
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
--.FVI.Z. 1989-05-23T17:21:40.00 10.0 undecidable manual PN 326 10.6338 -0.52 0.9
--.BSS.Z. 1989-05-23T17:21:31.89 10.0 undecidable manual SN 302 5.5611 0.63 0.5
--.SGO.Z. 1989-05-23T17:21:20.82 10.0 undecidable manual SN 302 5.1282 -0.34 0.6
--.MNO.Z. 1989-05-23T17:21:16.27 10.0 undecidable manual SN 271 4.9062 0.6 0.6
--.MEU.Z. 1989-05-23T17:21:11.50 10.0 undecidable manual SN 261 4.8729 -3.41 0
--.MGR.Z. 1989-05-23T17:21:11.96 10.0 undecidable manual SN 299 4.7619 -0.42 0.6
--.ATN.Z. 1989-05-23T17:21:00.85 10.0 undecidable manual SN 274 4.3068 -0.57 0.6
--.MO9.Z. 1989-05-23T17:20:56.91 10.0 undecidable manual SN 272 4.1181 -0.05 0.6
--.GMB.Z. 1989-05-23T17:20:54.45 10.0 undecidable manual SN 274 4.0182 -0.15 0.6
--.TDS.Z. 1989-05-23T17:20:53.95 10.0 undecidable manual SN 297 4.0182 -0.58 0.6
--.SDI.Z. 1989-05-23T17:20:47.93 10.0 undecidable manual PN 306 6.6933 1.39 0.8
--.GRI.Z. 1989-05-23T17:20:46.59 10.0 undecidable manual SN 285 3.663 0.42 0.6
--.FG2.Z. 1989-05-23T17:20:34.63 10.0 undecidable manual PN 312 5.9496 -1.59 0.7
--.BSS.Z. 1989-05-23T17:20:31.12 10.0 undecidable manual PN 302 5.5611 0.23 1.4
--.MS1.Z. 1989-05-23T17:20:27.00 10.0 undecidable manual PN 315 5.4501 -2.37 0.3
--.SGO.Z. 1989-05-23T17:20:25.66 10.0 undecidable manual PN 302 5.1282 0.61 1.4
--.MNO.Z. 1989-05-23T17:20:21.72 10.0 undecidable manual PN 271 4.9062 -0.16 1.5
--.MGR.Z. 1989-05-23T17:20:20.79 10.0 positive manual PN 299 4.7619 0.8 2.6
--.CDM.Z. 1989-05-23T17:20:18.50 10.0 undecidable manual PN 312 4.8396 -2.55 0.2
--.MEU.Z. 1989-05-23T17:20:18.81 10.0 undecidable manual PN 261 4.8729 -2.64 0.2
--.ATN.Z. 1989-05-23T17:20:14.99 10.0 undecidable manual PN 274 4.3068 1.34 1
--.CSI.Z. 1989-05-23T17:20:13.64 10.0 undecidable manual PN 298 4.0959 2.78 0.2
--.TDS.Z. 1989-05-23T17:20:11.39 10.0 positive manual PN 297 4.0182 1.71 1.4
--.MO9.Z. 1989-05-23T17:20:11.40 10.0 undecidable manual PN 272 4.1181 0.32 1.5
--.GMB.Z. 1989-05-23T17:20:10.57 10.0 positive manual PN 274 4.0182 0.86 2.6
--.CZI.Z. 1989-05-23T17:20:08.86 10.0 undecidable manual PN 290 3.9849 -0.49 1.5
--.GA2.Z. 1989-05-23T17:20:08.92 10.0 undecidable manual PN 274 4.0182 -0.79 1.3
--.FE2.Z. 1989-05-23T17:20:06.68 10.0 undecidable manual PN 273 3.8073 -0.17 1.6
--.GRI.Z. 1989-05-23T17:20:05.13 10.0 undecidable manual PN 285 3.663 0.28 1.6
--.SE2.Z. 1989-05-23T17:20:03.22 10.0 undecidable manual PN 289 3.4965 0.72 1.4
--.RI2.Z. 1989-05-23T17:20:02.56 10.0 undecidable manual PN 279 3.5298 -0.5 1.5
--.LCI.Z. 1989-05-23T17:19:59.11 10.0 undecidable manual PN 318 3.33 -1.12 1.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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