Earthquake with magnitude of M 4.0 on date 18-02-1985 and time 16:22:29 (Italy) in region Costa Greca Ionica (GRECIA)

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

  • 18-02-1985 15:22:29 (UTC)
  • 18-02-1985 16:22:29 (UTC +01:00) Italian time
  • 18-02-1985 17:22:29 (UTC +02:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 38.6, 20.48 at 8 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.

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
Rev 1000 M 4.0 1985-02-18
15:22:29
38.6 20.49 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1909
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-18 15:22:29 ± 0.79
Latitude 38.60 ± 0.03
Longitude 20.49 ± 0.03
Depth (km) 8 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1909

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) 4023.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 45
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) 0.0038
Epicentral distance of station farthest from the epicenter (degree) 0.08904
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitude information

M:4

Field Value
Value 4
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:50:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-02-18T15:26:35.00 10.0 undecidable manual SN 321 0.089 -0.49 0.3
--.FO1.Z. 1985-02-18T15:26:30.50 10.0 undecidable manual SN? 327 0.0882 -2.51 0
--.RBL.Z. 1985-02-18T15:26:24.00 10.0 undecidable manual SN 329 0.0841 1.63 0.1
--.CEY.Z. 1985-02-18T15:26:00.80 10.0 undecidable manual SN 330 0.0758 0.27 0.4
--.FO1.Z. 1985-02-18T15:24:50.00 10.0 undecidable manual PN 327 0.0882 0.04 0.9
--.CTI.Z. 1985-02-18T15:24:49.00 10.0 undecidable manual PN 321 0.089 -2.4 0
--.RBL.Z. 1985-02-18T15:24:47.00 10.0 undecidable manual PN? 329 0.0841 3.18 0
--.ORI.Z. 1985-02-18T15:24:03.00 10.0 undecidable manual SN 296 0.031 1 0.3
--.CEY.Z. 1985-02-18T15:24:30.40 10.0 undecidable manual PN 330 0.0758 -0.81 0.7
--.SGO.Z. 1985-02-18T15:24:26.00 10.0 undecidable manual SN 297 0.04 0.27 0.6
--.BRY.Z. 1985-02-18T15:24:26.00 10.0 undecidable manual SN 341 0.0409 -2.15 0
--.TTG.Z. 1985-02-18T15:24:12.50 10.0 undecidable manual SN 346 0.0355 -1.3 0.2
--.SDA.Z. 1985-02-18T15:24:03.40 10.0 undecidable manual SN 347 0.0314 0.14 0.9
--.SKO.Z. 1985-02-18T15:24:02.00 10.0 undecidable manual SN 11 0.031 -0.12 0.9
--.SD1.Z. 1985-02-18T15:23:57.50 10.0 undecidable manual PN 303 0.0537 0.04 1.3
--.DUI.Z. 1985-02-18T15:23:52.00 10.0 undecidable manual PN 305 0.0497 0.62 1
--.SGG.Z. 1985-02-18T15:23:50.40 10.0 undecidable manual PN 302 0.049 0.2 1.3
--.SOR.Z. 1985-02-18T15:23:45.30 10.0 positive manual PN 294 0.0461 -0.66 2.1
--.TIR.Z. 1985-02-18T15:23:45.00 10.0 undecidable manual SN 350 0.0251 -1.4 0.3
--.BS1.Z. 1985-02-18T15:23:43.00 10.0 undecidable manual PN 298 0.0438 0.71 1
--.TR9.Z. 1985-02-18T15:23:40.30 10.0 undecidable manual PN 303 0.0424 0.05 1.5
--.BRY.Z. 1985-02-18T15:23:38.00 10.0 undecidable manual PN 341 0.0409 0.13 1.5
--.SGO.Z. 1985-02-18T15:23:37.50 10.0 undecidable manual PN 297 0.04 1.02 0.8
--.KBN.Z. 1985-02-18T15:23:30.60 10.0 undecidable manual SN 6 0.0183 2.06 0.1
--.TTG.Z. 1985-02-18T15:23:28.50 10.0 undecidable manual PN 346 0.0355 -1.09 0.7
--.BAI.Z. 1985-02-18T15:23:27.00 10.0 undecidable manual PN? 313 0.0336 0.25 0.6
--.MMN.Z. 1985-02-18T15:23:26.60 10.0 undecidable manual PN 291 0.0334 0.18 1.5
--.BRT.Z. 1985-02-18T15:23:24.00 10.0 undecidable manual PN? 312 0.0308 1.46 0.1
--.SDA.Z. 1985-02-18T15:23:23.00 10.0 undecidable manual PN 347 0.0314 -0.5 1.3
--.ULC.Z. 1985-02-18T15:23:23.00 10.0 undecidable manual PN 344 0.0314 -0.44 1.3
--.SKO.Z. 1985-02-18T15:23:22.60 10.0 undecidable manual PN 11 0.031 -0.25 2.9
--.ORI.Z. 1985-02-18T15:23:22.00 10.0 undecidable manual PN 296 0.031 -0.78 1
--.ROI.Z. 1985-02-18T15:23:20.20 10.0 undecidable manual PN 289 0.0287 0.91 0.9
--.VAY.Z. 1985-02-18T15:23:18.30 10.0 undecidable manual PN 29 0.0283 -0.51 2.6
--.TIR.Z. 1985-02-18T15:23:14.00 10.0 undecidable manual PN 350 0.0251 0.23 1.5
--.ATH.Z. 1985-02-18T15:23:12.20 10.0 undecidable manual PN 102 0.0235 0.88 0.9
--.SRN.Z. 1985-02-18T15:23:12.30 10.0 undecidable manual SN 343 0.012 0.46 0.8
--.OHR.Z. 1985-02-18T15:23:10.40 10.0 undecidable manual PN 5 0.0227 0.27 2.9
--.LCI.Z. 1985-02-18T15:23:09.50 10.0 undecidable manual PN 314 0.0227 -0.61 1.2
--.KZN.Z. 1985-02-18T15:23:03.20 10.0 undecidable manual PN 29 0.0177 0.6 1.2
--.KBN.Z. 1985-02-18T15:23:03.80 10.0 positive manual PN 6 0.0183 0.34 2.8
--.SRN.Z. 1985-02-18T15:22:54.30 10.0 undecidable manual PN 343 0.012 0.48 1.3
--.VLS.Z. 1985-02-18T15:22:43.10 10.0 undecidable manual SG 168 0.0038 -2.03 0
--.VLS.Z. 1985-02-18T15:22:38.80 10.0 undecidable manual PG 168 0.0038 0.41 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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