Earthquake with magnitude of M 4.1 on date 31-01-1985 and time 17:39:19 (Italy) in region Greece

A magnitude M 4.1 earthquake occured in region: Greece, on

  • 31-01-1985 16:39:19 (UTC)
  • 31-01-1985 17:39:19 (UTC +01:00) Italian time
  • 31-01-1985 18:39:19 (UTC +02:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 38.44, 22.97 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.

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 4.1 1985-01-31
16:39:19
38.44 22.97 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-31 16:39:19 ± 1.359
Latitude 38.44 ± 0.13
Longitude 22.97 ± 0.14
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 839

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) 18941.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 322
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
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) 0.03772
Epicentral distance of station farthest from the epicenter (degree) 0.08176
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

M:4.1

Field Value
Value 4.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 839
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 Takeoff_angle Residual Weight
--.AS1.Z. 1985-01-31T16:41:31.00 10.0 undecidable manual PN 300 0.0815 1.21 0.5
--.AR1.Z. 1985-01-31T16:41:30.00 10.0 undecidable manual PN 303 0.0818 -0.13 1.2
--.MNS.Z. 1985-01-31T16:41:25.50 10.0 undecidable manual PN 296 0.0788 -0.06 1.3
--.SD1.Z. 1985-01-31T16:41:12.50 10.0 undecidable manual PN 294 0.0695 1.13 0.6
--.LCI.Z. 1985-01-31T16:41:10.00 10.0 undecidable manual SN 295 0.0377 0.39 0.8
--.DUI.Z. 1985-01-31T16:41:05.00 10.0 undecidable manual PN 295 0.0652 0.02 1.4
--.SGG.Z. 1985-01-31T16:41:05.00 10.0 undecidable manual PN 293 0.0648 0.69 1
--.GIB.Z. 1985-01-31T16:41:04.00 10.0 undecidable manual PN 266 0.0632 2.08 0.1
--.OVO.Z. 1985-01-31T16:41:01.60 10.0 undecidable manual PN 289 0.0631 0.01 1.4
--.SOR.Z. 1985-01-31T16:40:59.90 10.0 negative manual PN 287 0.0628 -1.39 0.8
--.BS1.Z. 1985-01-31T16:40:57.00 10.0 undecidable manual PN 289 0.0601 -0.16 1.4
--.TR9.Z. 1985-01-31T16:40:54.30 10.0 undecidable manual PN 293 0.0584 -0.13 1.5
--.SGO.Z. 1985-01-31T16:40:51.70 10.0 undecidable manual PN 289 0.0564 0.23 1.4
--.BAI.Z. 1985-01-31T16:40:39.00 10.0 undecidable manual PN 298 0.0483 -0.22 1.4
--.ORI.Z. 1985-01-31T16:40:37.50 10.0 undecidable manual PN 286 0.0476 -0.59 1.2
--.CSI.Z. 1985-01-31T16:40:37.50 10.0 undecidable manual PN 283 0.0481 -1.24 0.6
--.ROI.Z. 1985-01-31T16:40:34.40 10.0 undecidable manual PN 281 0.0458 -0.93 0.9
--.PE1.Z. 1985-01-31T16:40:33.00 10.0 undecidable manual PN 297 0.0438 0.69 1.1
--.LCI.Z. 1985-01-31T16:40:22.50 10.0 undecidable manual PN? 295 0.0377 -0.51 0.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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