Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 4.0 on date 09-11-1986 and time 10:11:39 (UTC) in region Costa Greca Ionica (GRECIA)

A magnitude M 4.0 earthquake occured in region: Costa Greca Ionica (GRECIA), on

  • 09-11-1986 10:11:39 (UTC)
  • 09-11-1986 11:11:39 (UTC +01:00) Italian time
  • 09-11-1986 12:11:39 (UTC +02:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 37.6410, 20.6960 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 4.0 1986-11-09
10:11:39		 37.641 20.696 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 36799
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-11-09 10:11:39 ± 0.378
Latitude 37.6410 ± 0.0275
Longitude 20.6960 ± 0.0268
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 36799

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) 3868.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
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) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.02161
Epicentral distance of station farthest from the epicenter (degree) 0.07480
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitude information

M:4.0

Field Value
Value 4.0
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 36799
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
--.BRY.Z. 1986-11-09T10:14:01.00 10.0 undecidable manual SN 345 5.5056 0.35 0.5
--.IVA.Z. 1986-11-09T10:13:55.00 10.0 undecidable manual SN 355 5.2614 0.19 0.6
--.SGO.Z. 1986-11-09T10:13:49.70 10.0 undecidable manual SN 308 5.0949 -1.11 0.3
--.TTG.Z. 1986-11-09T10:13:46.00 10.0 undecidable manual SN 349 4.9062 -0.43 0.5
--.ARV.Z. 1986-11-09T10:13:39.50 10.0 undecidable manual PN 319 8.3028 0.26 1.1
--.ASS.Z. 1986-11-09T10:13:38.50 10.0 undecidable manual PN 316 8.1807 0.96 0.7
--.ULC.Z. 1986-11-09T10:13:36.00 10.0 undecidable manual SN 347 4.4511 0.28 0.6
--.SKO.Z. 1986-11-09T10:13:33.00 10.0 undecidable manual SN 9 4.3623 -0.43 0.8
--.SO9.Z. 1986-11-09T10:13:18.00 10.0 undecidable manual SN 279 3.6741 0.77 0.4
--.SD1.Z. 1986-11-09T10:13:17.00 10.0 undecidable manual PN 311 6.6711 0.12 1.3
--.SAR.Z. 1986-11-09T10:13:12.60 10.0 undecidable manual PN 347 6.4602 -1.33 0.9
--.BRY.Z. 1986-11-09T10:13:00.00 10.0 undecidable manual PN 345 5.5056 -0.82 1
--.IVA.Z. 1986-11-09T10:12:57.00 10.0 undecidable manual PN 355 5.2614 -0.45 1.3
--.SGO.Z. 1986-11-09T10:12:56.00 10.0 undecidable manual PN 308 5.0949 0.86 1
--.TTG.Z. 1986-11-09T10:12:53.00 10.0 undecidable manual PN 349 4.9062 0.39 1.4
--.BCI.Z. 1986-11-09T10:12:51.80 10.0 undecidable manual PN 356 4.7397 1.44 0.5
--.ML9.Z. 1986-11-09T10:12:47.50 10.0 undecidable manual PN 266 4.5954 -0.91 1
--.ULC.Z. 1986-11-09T10:12:45.00 10.0 undecidable manual PN 347 4.4511 -1.43 0.5
--.SDA.Z. 1986-11-09T10:12:45.50 10.0 undecidable manual PN 350 4.4622 -1.03 0.8
--.SKO.Z. 1986-11-09T10:12:43.50 10.0 undecidable manual PN 9 4.3623 -1.6 0.3
--.BRT.Z. 1986-11-09T10:12:43.00 10.0 undecidable manual PN 322 4.2291 -0.39 1.4
--.AT9.Z. 1986-11-09T10:12:42.50 10.0 undecidable manual PN 280 4.1514 0.27 1.5
--.PHP.Z. 1986-11-09T10:12:42.50 10.0 undecidable manual PN 359 4.0404 1.73 0.3
--.ORI.Z. 1986-11-09T10:12:41.30 10.0 undecidable manual PN 309 4.0848 -0.06 1.6
--.VAY.Z. 1986-11-09T10:12:39.00 10.0 undecidable manual PN 22 3.9405 -0.39 2.9
--.TIR.Z. 1986-11-09T10:12:38.10 10.0 positive manual PN 352 3.7518 1.31 1.1
--.SO9.Z. 1986-11-09T10:12:35.20 10.0 undecidable manual PN 279 3.6741 -0.55 1.3
--.GR9.Z. 1986-11-09T10:12:34.00 10.0 undecidable manual PN 292 3.5409 0.14 1.6
--.LCI.Z. 1986-11-09T10:12:31.50 10.0 undecidable manual PN 326 3.3522 0.23 1.5
--.KBN.Z. 1986-11-09T10:12:27.80 10.0 undecidable manual PN 3 2.9748 1.71 0.3
--.KZN.Z. 1986-11-09T10:12:23.20 10.0 undecidable manual PN 18 2.7861 -0.28 1.5
--.ATH.Z. 1986-11-09T10:12:18.50 10.0 undecidable manual PN 83 2.3976 0.31 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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