Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.5 on date 17-10-1988 and time 02:30:25 (UTC) in region Costa Greca Ionica (GRECIA)

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

  • 17-10-1988 02:30:25 (UTC)
  • 17-10-1988 03:30:25 (UTC +01:00) Italian time
  • 17-10-1988 04:30:25 (UTC +02:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 37.9550, 20.9130 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 3.5 		1988-10-17
02:30:25		 37.955 20.913 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 78999
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-10-17 02:30:25 ± 0.455
Latitude 37.9550 ± 0.0390
Longitude 20.9130 ± 0.0291
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 78999

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) 5027.8
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 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00300
Epicentral distance of station farthest from the epicenter (degree) 0.09058
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 78999
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:14:20

M:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 78999
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
--.RBL.Z. 1988-10-17T02:32:51.30 10.0 undecidable manual PN 329 10.0566 1.12 0.4
--.SOI.Z. 1988-10-17T02:32:08.24 10.0 undecidable manual SN 273 3.8184 0.92 0.3
--.BEO.Z. 1988-10-17T02:32:06.00 10.0 undecidable manual PN 357 6.8598 -0.23 1.1
--.SDI.Z. 1988-10-17T02:32:01.95 10.0 undecidable manual PN 306 6.6045 -0.78 0.8
--.FG2.Z. 1988-10-17T02:31:51.65 10.0 undecidable manual PN 312 5.8386 -0.6 1
--.BSS.Z. 1988-10-17T02:31:48.58 10.0 undecidable manual PN 302 5.4723 1.4 0.3
--.SGO.Z. 1988-10-17T02:31:42.70 10.0 undecidable manual PN 302 5.0505 0.73 0.9
--.MGR.Z. 1988-10-17T02:31:36.16 10.0 undecidable manual PN 299 4.6953 -0.21 1.4
--.PRK.Z. 1988-10-17T02:31:33.00 10.0 undecidable manual PN 70 4.3623 0.97 0.8
--.BCI.Z. 1988-10-17T02:31:32.70 10.0 undecidable manual PN 351 4.4511 -0.38 1.3
--.ATN.Z. 1988-10-17T02:31:31.23 10.0 undecidable manual PN 274 4.2846 0.38 1.3
--.SDA.Z. 1988-10-17T02:31:29.00 10.0 undecidable manual PN 345 4.1958 -0.57 1.2
--.BRT.Z. 1988-10-17T02:31:27.86 10.0 undecidable manual PN 316 4.107 -0.58 1.2
--.CZI.Z. 1988-10-17T02:31:26.14 10.0 undecidable manual PN 289 3.9405 0.13 1.5
--.TDS.Z. 1988-10-17T02:31:26.00 10.0 undecidable manual PN 296 3.9405 -0.12 1.5
--.SKO.Z. 1988-10-17T02:31:26.20 10.0 undecidable manual PN 5 4.0293 -1.1 0.7
--.FE2.Z. 1988-10-17T02:31:25.38 10.0 undecidable manual PN 272 3.7962 1.29 0.5
--.PHP.Z. 1988-10-17T02:31:25.20 10.0 undecidable manual PN 354 3.7407 1.84 0.1
--.GA2.Z. 1988-10-17T02:31:25.46 10.0 undecidable manual PN 274 3.996 -1.43 0.4
--.SOI.Z. 1988-10-17T02:31:24.52 10.0 undecidable manual PN 273 3.8184 0.08 1.5
--.GRI.Z. 1988-10-17T02:31:21.00 10.0 undecidable manual PN 285 3.6186 -0.66 1.1
--.VAY.Z. 1988-10-17T02:31:21.80 10.0 undecidable manual PN 20 3.5964 0.5 1.3
--.TIR.Z. 1988-10-17T02:31:20.00 10.0 undecidable manual PN 346 3.4743 0.25 1.4
--.LCI.Z. 1988-10-17T02:31:16.98 10.0 undecidable manual PN 318 3.2079 0.88 0.9
--.OHR.Z. 1988-10-17T02:31:15.40 10.0 undecidable manual PN 358 3.1413 0.17 1.5
--.PLG.Z. 1988-10-17T02:31:14.50 10.0 undecidable manual PN 38 3.108 -0.15 1.5
--.KBN.Z. 1988-10-17T02:31:08.40 10.0 undecidable manual PN 357 2.664 -0.15 1.5
--.KZN.Z. 1988-10-17T02:31:05.50 10.0 undecidable manual PN 15 2.4309 0.06 1.5
--.ATH.Z. 1988-10-17T02:31:01.00 10.0 undecidable manual PN 88 2.1978 -1.24 0.5
--.SRN.Z. 1988-10-17T02:31:00.00 10.0 undecidable manual PN 339 2.0424 -0.06 1.5
--.VLS.Z. 1988-10-17T02:30:31.30 10.0 undecidable manual PG 311 0.333 -1.92 0.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download