Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 3.7 on date 23-10-1988 and time 08:29:59 (Italy) in region Costa Greca Ionica (GRECIA)

A magnitude M 3.7 earthquake occured in region: Costa Greca Ionica (GRECIA), on

  • 23-10-1988 07:29:59 (UTC)
  • 23-10-1988 08:29:59 (UTC +01:00) Italian time
  • 23-10-1988 09:29:59 (UTC +02:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 38.1240, 21.0470 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 3.7 1988-10-23
07:29:59		 38.124 21.047 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 79619
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-10-23 07:29:59 ± 0.405
Latitude 38.1240 ± 0.0371
Longitude 21.0470 ± 0.0266
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 79619

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) 4729.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
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) 0.01740
Epicentral distance of station farthest from the epicenter (degree) 0.08564
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitude information

M:3.7

Field Value
Value 3.7
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 79619
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. 1988-10-23T07:32:14.40 10.0 undecidable manual PN 327 9.5016 -1.39 0.3
--.LJU.Z. 1988-10-23T07:32:12.00 10.0 undecidable manual PN 330 9.2574 -0.45 0.8
--.CEY.Z. 1988-10-23T07:32:08.50 10.0 undecidable manual PN 328 9.0465 -1.04 0.5
--.VBY.Z. 1988-10-23T07:32:03.20 10.0 undecidable manual PN 330 8.5248 0.77 0.7
--.ARV.Z. 1988-10-23T07:31:56.38 10.0 undecidable manual PN 313 8.1363 -0.62 0.8
--.SDI.Z. 1988-10-23T07:31:37.88 10.0 undecidable manual PN 304 6.5934 2.09 0.1
--.DUI.Z. 1988-10-23T07:31:31.13 10.0 undecidable manual PN 306 6.1494 1.35 0.4
--.PVL.Z. 1988-10-23T07:31:27.00 10.0 undecidable manual PN 29 5.9052 0.61 0.9
--.HVA.Z. 1988-10-23T07:31:27.70 10.0 undecidable manual PN 326 6.1272 -1.71 0.2
--.BSS.Z. 1988-10-23T07:31:20.10 10.0 undecidable manual PN 300 5.4723 -0.34 1.2
--.SGO.Z. 1988-10-23T07:31:15.31 10.0 undecidable manual PN 299 5.0505 0.7 1
--.IZM.Z. 1988-10-23T07:31:11.70 10.0 undecidable manual PN 84 4.884 -0.52 1.1
--.KDZ.Z. 1988-10-23T07:31:11.00 10.0 undecidable manual PN 41 4.8174 -0.38 1.2
--.NPS.Z. 1988-10-23T07:31:10.10 10.0 undecidable manual PN 126 4.6398 1.17 0.6
--.CDM.Z. 1988-10-23T07:31:09.40 10.0 undecidable manual PN 309 4.7064 -0.48 1.1
--.MGR.Z. 1988-10-23T07:31:08.41 10.0 undecidable manual PN 296 4.6953 -1.39 0.4
--.BAI.Z. 1988-10-23T07:31:05.50 10.0 undecidable manual PN 313 4.3623 0.21 1.3
--.PRK.Z. 1988-10-23T07:31:05.00 10.0 undecidable manual PN 72 4.218 1.8 0.2
--.BCI.Z. 1988-10-23T07:31:04.60 10.0 undecidable manual PN 349 4.2957 0.33 1.2
--.SDA.Z. 1988-10-23T07:31:02.30 10.0 undecidable manual PN 342 4.0626 1.32 0.5
--.BRT.Z. 1988-10-23T07:31:01.47 10.0 undecidable manual PN 313 4.0626 0.39 1.2
--.CZI.Z. 1988-10-23T07:30:58.58 10.0 undecidable manual PN 286 3.9849 -1.31 0.5
--.PE1.Z. 1988-10-23T07:30:58.00 10.0 undecidable manual PN 314 3.8628 -0.32 1.2
--.SKO.Z. 1988-10-23T07:30:57.50 10.0 positive manual PN 3 3.8406 -0.63 2.1
--.ROI.Z. 1988-10-23T07:30:57.94 10.0 undecidable manual PN 293 3.7629 0.95 0.8
--.PHP.Z. 1988-10-23T07:30:54.30 10.0 undecidable manual PN 352 3.5853 -0.18 1.3
--.TIR.Z. 1988-10-23T07:30:51.20 10.0 undecidable manual PN 343 3.3411 0.08 1.3
--.VAY.Z. 1988-10-23T07:30:51.40 10.0 undecidable manual PN 18 3.3966 -0.49 2.3
--.OHR.Z. 1988-10-23T07:30:46.40 10.0 undecidable manual PN 355 2.9859 0.16 2.6
--.PLG.Z. 1988-10-23T07:30:44.50 10.0 undecidable manual PN 38 2.9082 -0.71 1
--.KBN.Z. 1988-10-23T07:30:40.80 10.0 undecidable manual PN 354 2.4975 1.22 0.5
--.KZN.Z. 1988-10-23T07:30:36.10 10.0 positive manual PN 13 2.2422 0.01 2.6
--.ATH.Z. 1988-10-23T07:30:33.00 10.0 positive manual PN 92 2.0979 -1.09 1.3
--.SRN.Z. 1988-10-23T07:30:32.20 10.0 undecidable manual PN 334 1.9314 0.48 1.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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