Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.5 on date 16-10-1988 and time 18:35:31 (UTC) in region Costa Greca Ionica (GRECIA)

A magnitude Md 3.5 earthquake occured in region: Costa Greca Ionica (GRECIA), on

  • 16-10-1988 18:35:31 (UTC)
  • 16-10-1988 19:35:31 (UTC +01:00) Italian time
  • 16-10-1988 20:35:31 (UTC +02:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 37.9450, 20.9560 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 		Md 3.5
M 3.6 		1988-10-16
18:35:31		 37.945 20.956 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 78959
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-10-16 18:35:31 ± 0.364
Latitude 37.9450 ± 0.0330
Longitude 20.9560 ± 0.0243
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 78959

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) 4245.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00332
Epicentral distance of station farthest from the epicenter (degree) 0.05294
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 78959
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:14:17

M:3.6

Field Value
Value 3.6
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 78959
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
--.SOI.Z. 1988-10-16T18:37:14.00 10.0 undecidable manual SN 273 3.8517 0.51 0.4
--.FG2.Z. 1988-10-16T18:36:57.82 10.0 undecidable manual PN 312 5.8719 -0.22 1.1
--.BSS.Z. 1988-10-16T18:36:53.83 10.0 undecidable manual PN 302 5.5056 0.84 0.6
--.MGR.Z. 1988-10-16T18:36:43.50 10.0 undecidable manual PN 299 4.7175 0.85 0.7
--.BCI.Z. 1988-10-16T18:36:38.80 10.0 undecidable manual PN 351 4.4622 0.16 1.4
--.MMN.Z. 1988-10-16T18:36:37.50 10.0 undecidable manual PN 298 4.3179 0.91 0.6
--.ATN.Z. 1988-10-16T18:36:36.20 10.0 undecidable manual PN 274 4.3179 -0.47 1.2
--.SDA.Z. 1988-10-16T18:36:35.00 10.0 undecidable manual PN 344 4.218 -0.17 1.4
--.BRT.Z. 1988-10-16T18:36:34.50 10.0 undecidable manual PN 315 4.1403 0.29 1.3
--.TDS.Z. 1988-10-16T18:36:33.50 10.0 undecidable manual PN 296 3.9849 1.55 0.2
--.SKO.Z. 1988-10-16T18:36:32.00 10.0 undecidable manual PN 4 4.0293 -0.74 0.9
--.CZI.Z. 1988-10-16T18:36:31.94 10.0 undecidable manual PN 289 3.9738 0.09 1.4
--.GA2.Z. 1988-10-16T18:36:31.84 10.0 undecidable manual PN 274 4.0293 -0.88 0.8
--.FE2.Z. 1988-10-16T18:36:29.82 10.0 undecidable manual PN 272 3.8295 -0.09 1.5
--.SOI.Z. 1988-10-16T18:36:28.50 10.0 undecidable manual PN 273 3.8517 -1.76 0.1
--.TIR.Z. 1988-10-16T18:36:26.20 10.0 undecidable manual PN 346 3.4965 0.86 0.8
--.VAY.Z. 1988-10-16T18:36:26.00 10.0 undecidable manual PN 19 3.5853 -0.62 1.1
--.LCI.Z. 1988-10-16T18:36:22.00 10.0 undecidable manual PN 317 3.2412 0.13 1.5
--.OHR.Z. 1988-10-16T18:36:20.10 10.0 undecidable manual PN 357 3.1635 -0.63 1
--.PLG.Z. 1988-10-16T18:36:20.00 10.0 undecidable manual PN 37 3.0858 0.17 1.5
--.KZN.Z. 1988-10-16T18:36:11.30 10.0 undecidable manual PN 14 2.4309 0.49 1.3
--.ATH.Z. 1988-10-16T18:36:07.30 10.0 undecidable manual PN 88 2.1645 0.18 1.4
--.SRN.Z. 1988-10-16T18:36:05.40 10.0 undecidable manual PN 339 2.0646 -0.3 1.4
--.VLS.Z. 1988-10-16T18:35:37.80 10.0 undecidable manual PG 308 0.3663 -1.38 0.3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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