Earthquake with magnitude of M 4.0 on date 30-08-1991 and time 17:17:03 (UTC) in region Greece [Land]

A magnitude M 4.0 earthquake occured in region: Greece [Land], on

  • 30-08-1991 17:17:03 (UTC)
  • 30-08-1991 19:17:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.99, 20.69 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 4.0 1991-08-30
17:17:03
39.99 20.69 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 148469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-08-30 17:17:03 ± 0.264
Latitude 39.99 ± 0.02
Longitude 20.69 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 148469

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) 3495.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.01012
Epicentral distance of station farthest from the epicenter (degree) 0.09398
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 43
Magnitude information

M:4

Field Value
Value 4
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 148469
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
--.CEY.Z. 1991-08-30T17:20:10.00 10.0 undecidable manual SN 323 0.0661 1.31 0.3
--.KHC.Z. 1991-08-30T17:19:35.00 10.0 undecidable manual PN! 333 0.094 2.22 0
--.CTI.Z. 1991-08-30T17:19:10.51 10.0 undecidable manual PN 315 0.0806 -1.87 0.3
--.ZST.Z. 1991-08-30T17:19:08.60 10.0 undecidable manual PN 343 0.0767 2.12 0.2
--.MO9.Z. 1991-08-30T17:18:59.12 10.0 undecidable manual SN 244 0.0392 1.68 0.2
--.SFI.Z. 1991-08-30T17:18:56.59 10.0 undecidable manual PN! 303 0.0688 2.21 0
--.CRE.Z. 1991-08-30T17:18:52.10 10.0 undecidable manual PN 302 0.067 0.41 1.2
--.CEY.Z. 1991-08-30T17:18:50.00 10.0 undecidable manual PN 323 0.0661 -0.34 1.2
--.VBY.Z. 1991-08-30T17:18:43.70 10.0 undecidable manual PN 326 0.0612 0.9 1
--.ASS.Z. 1991-08-30T17:18:42.50 10.0 undecidable manual PN 299 0.0608 0.42 1.3
--.ARV.Z. 1991-08-30T17:18:41.91 10.0 undecidable manual PN 303 0.0608 -0.24 1.3
--.MNS.Z. 1991-08-30T17:18:40.45 10.0 undecidable manual PN! 294 0.0583 2.09 0
--.SDI.Z. 1991-08-30T17:18:24.61 10.0 undecidable manual PN 290 0.0493 0.03 1.5
--.MEU.Z. 1991-08-30T17:18:21.22 10.0 undecidable manual PN 239 0.0486 -2.39 0.2
--.PZI.Z. 1991-08-30T17:18:20.50 10.0 undecidable manual PN! 238 0.0482 -2.48 0
--.MO9.Z. 1991-08-30T17:18:08.00 10.0 undecidable manual PN 244 0.0392 -1.21 1
--.ATN.Z. 1991-08-30T17:18:08.66 10.0 undecidable manual PN 247 0.04 -1.79 0.5
--.SGO.Z. 1991-08-30T17:18:06.27 10.0 undecidable manual PN 279 0.0372 0.01 1.7
--.SOI.Z. 1991-08-30T17:18:05.22 10.0 undecidable manual PN 243 0.0367 -0.1 1.7
--.MGR.Z. 1991-08-30T17:18:04.22 10.0 undecidable manual PN 273 0.0354 0.88 1.3
--.GMB.Z. 1991-08-30T17:18:03.41 10.0 undecidable manual PN! 245 0.0376 -3.44 0
--.PF9.Z. 1991-08-30T17:18:03.59 10.0 undecidable manual PN 279 0.0342 1.99 0.4
--.FG3.Z. 1991-08-30T17:18:02.89 10.0 undecidable manual PN 297 0.0358 -1.06 1.1
--.VLI.Z. 1991-08-30T17:18:01.00 10.0 undecidable manual PN 151 0.0334 0.68 1.4
--.PLE.Z. 1991-08-30T17:17:59.00 10.0 undecidable manual PN 344 0.0312 1.88 0.5
--.CZI.Z. 1991-08-30T17:17:59.20 10.0 negative manual PN 259 0.0323 0.34 3.3
--.VLS.Z. 1991-08-30T17:17:59.50 10.0 undecidable manual SN! 182 0.0163 2.68 0
--.VAY.Z. 1991-08-30T17:17:58.40 10.0 undecidable manual SN 46 0.0175 -1.78 0.3
--.CSI.Z. 1991-08-30T17:17:57.58 10.0 undecidable manual PN 268 0.0304 1.83 0.5
--.TDS.Z. 1991-08-30T17:17:56.28 10.0 undecidable manual PN 265 0.0302 0.82 1.3
--.ACI.Z. 1991-08-30T17:17:56.68 10.0 undecidable manual PN 261 0.0316 -0.88 1.3
--.GRI.Z. 1991-08-30T17:17:56.53 10.0 undecidable manual PN 251 0.0314 -0.85 1.3
--.BRY.Z. 1991-08-30T17:17:54.00 10.0 undecidable manual PN 331 0.03 -1.04 1.1
--.ROI.Z. 1991-08-30T17:17:52.48 10.0 undecidable manual PN 263 0.0287 -0.74 1.4
--.ATH.Z. 1991-08-30T17:17:52.20 10.0 undecidable manual PN 129 0.0278 0.36 1.6
--.NKY.Z. 1991-08-30T17:17:52.50 10.0 undecidable manual PN 336 0.0278 0.62 1.5
--.BAI.Z. 1991-08-30T17:17:51.00 10.0 undecidable manual PN 292 0.0279 -0.98 1.2
--.HCY.Z. 1991-08-30T17:17:50.60 10.0 undecidable manual PN 326 0.0266 0.59 1.5
--.BDV.Z. 1991-08-30T17:17:47.00 10.0 undecidable manual PN 329 0.0242 0.7 1.5
--.TTG.Z. 1991-08-30T17:17:47.50 10.0 undecidable manual PN 336 0.024 1.5 0.8
--.BRT.Z. 1991-08-30T17:17:46.75 10.0 undecidable manual PN 289 0.0255 -1.57 0.7
--.PE1.Z. 1991-08-30T17:17:44.00 10.0 undecidable manual PN 289 0.0236 -1.32 0.9
--.ULC.Z. 1991-08-30T17:17:41.20 10.0 undecidable manual PN 331 0.0202 0.87 1.3
--.OHR.Z. 1991-08-30T17:17:39.00 10.0 undecidable manual SN 4 0.0101 -1.59 0.3
--.SKO.Z. 1991-08-30T17:17:37.50 10.0 undecidable manual PN 15 0.0185 -0.18 3.4
--.VAY.Z. 1991-08-30T17:17:35.50 10.0 undecidable manual PN 46 0.0175 -0.64 2.9
--.VLS.Z. 1991-08-30T17:17:35.70 10.0 undecidable manual PN 182 0.0163 1.49 0.6
--.OHR.Z. 1991-08-30T17:17:22.00 10.0 undecidable manual PN! 4 0.0101 -2.84 0
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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