Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.4 on date 06-07-1991 and time 00:07:23 (UTC) in region Confine Grecia Albania (GRECIA, ALBANIA)

A magnitude Md 3.4 earthquake occured in region: Confine Grecia Albania (GRECIA, ALBANIA), on

  • 06-07-1991 00:07:23 (UTC)
  • 06-07-1991 02:07:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.0980, 20.4600 at 5 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 3.4
ML-VAX 3.3 		1991-07-06
00:07:23		 40.098 20.46 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 144739
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-07-06 00:07:23 ± 0.268
Latitude 40.0980 ± 0.0291
Longitude 20.4600 ± 0.0301
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 144739

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) 4122.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
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) 0.00567
Epicentral distance of station farthest from the epicenter (degree) 0.06516
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

Md:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 144739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:15:08

ML:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations 7
Type of magnitude ML
Reference to an origin 144739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SOI.Z. 1991-07-06T00:09:10.35 10.0 undecidable manual SN 240 3.9627 0.22 0.6
--.CRE.Z. 1991-07-06T00:09:10.52 10.0 undecidable manual PN 301 7.2372 0.37 1
--.DR2.Z. 1991-07-06T00:09:06.00 10.0 undecidable manual SN 248 3.7851 0.23 0.6
--.ASS.Z. 1991-07-06T00:09:01.35 10.0 undecidable manual PN 299 6.5268 0.81 0.7
--.SDI.Z. 1991-07-06T00:08:43.67 10.0 undecidable manual PN 289 5.2614 0.57 1.1
--.MO9.Z. 1991-07-06T00:08:27.74 10.0 undecidable manual PN 241 4.2402 -1.32 0.5
--.VLI.Z. 1991-07-06T00:08:25.30 10.0 undecidable manual PN 148 3.8961 1.08 0.7
--.GA2.Z. 1991-07-06T00:08:25.48 10.0 undecidable manual PN 242 4.0737 -1.16 0.6
--.FE2.Z. 1991-07-06T00:08:25.34 10.0 undecidable manual PN 239 3.9627 0.16 1.5
--.SGO.Z. 1991-07-06T00:08:25.71 10.0 undecidable manual PN 277 3.9405 0.75 1.1
--.SOI.Z. 1991-07-06T00:08:24.78 10.0 undecidable manual PN 240 3.9627 -0.44 1.4
--.MGR.Z. 1991-07-06T00:08:22.46 10.0 undecidable manual PN 271 3.7407 0.29 1.5
--.DR2.Z. 1991-07-06T00:08:22.32 10.0 undecidable manual PN 248 3.7851 -0.38 1.4
--.PA2.Z. 1991-07-06T00:08:18.22 10.0 undecidable manual PN 243 3.4965 -0.6 1.3
--.CZI.Z. 1991-07-06T00:08:17.94 10.0 undecidable manual PN 256 3.4299 -0.03 1.7
--.GRI.Z. 1991-07-06T00:08:16.40 10.0 undecidable manual PN 248 3.3633 -0.54 1.4
--.ORI.Z. 1991-07-06T00:08:14.00 10.0 undecidable manual PN 269 3.0636 1.12 0.7
--.TDS.Z. 1991-07-06T00:08:13.50 10.0 undecidable manual PN 263 3.1857 -1.02 0.8
--.BRT.Z. 1991-07-06T00:08:07.50 10.0 undecidable manual PN 287 2.6196 0.63 1.3
--.VLS.Z. 1991-07-06T00:07:59.00 10.0 undecidable manual PN 176 1.9092 1.9 0.1
--.VAY.Z. 1991-07-06T00:07:57.60 10.0 undecidable manual PN 51 2.0091 -0.74 2.3
--.SKO.Z. 1991-07-06T00:07:57.70 10.0 undecidable manual PN 20 2.0091 -0.66 1.2
--.LCI.Z. 1991-07-06T00:07:56.50 10.0 undecidable manual PN 277 1.7982 0.98 0.9
--.KZN.Z. 1991-07-06T00:07:40.90 10.0 undecidable manual PG! 77 1.0101 -3.58 0
--.KEK.Z. 1991-07-06T00:07:36.00 10.0 undecidable manual PG 232 0.6327 -1.32 0.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download