Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 3.0 on date 07-02-1991 and time 12:56:23 (Italy) in region Albania

A magnitude M 3.0 earthquake occured in region: Albania, on

  • 07-02-1991 11:56:23 (UTC)
  • 07-02-1991 12:56:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.2380, 20.2380 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 3.0 1991-02-07
11:56:23		 41.238 20.238 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 135499
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-02-07 11:56:23 ± 0.285
Latitude 41.2380 ± 0.0294
Longitude 20.2380 ± 0.0288
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 135499

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) 4061.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
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) 0.00267
Epicentral distance of station farthest from the epicenter (degree) 0.01870
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:3.0

Field Value
Value 3.0
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 135499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:23:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.NKY.Z. 1991-02-07T11:57:20.92 10.0 undecidable manual SN! 329 1.8204 3.96 0
--.IVA.Z. 1991-02-07T11:57:15.41 10.0 undecidable manual SN! 351 1.6428 2.52 0
--.BDV.Z. 1991-02-07T11:57:11.84 10.0 undecidable manual SN! 315 1.4763 2.99 0
--.TTG.Z. 1991-02-07T11:57:08.57 10.0 undecidable manual SN 328 1.3875 1.78 0.2
--.PVY.Z. 1991-02-07T11:57:06.99 10.0 undecidable manual SN 351 1.3653 0.79 0.6
--.BRY.Z. 1991-02-07T11:56:58.59 10.0 negative manual PN 323 2.0757 0.81 1.5
--.ULC.Z. 1991-02-07T11:56:57.57 10.0 undecidable manual SN 314 1.0323 -0.64 0.7
--.SKO.Z. 1991-02-07T11:56:57.50 10.0 undecidable manual SN! 50 1.1544 -3.68 0
--.NKY.Z. 1991-02-07T11:56:55.20 10.0 negative manual PN 329 1.8204 0.81 1.7
--.VAY.Z. 1991-02-07T11:56:54.60 10.0 undecidable manual PN 86 1.7427 1.35 0.5
--.HCY.Z. 1991-02-07T11:56:54.36 10.0 negative manual PN 313 1.7649 0.86 1.6
--.IVA.Z. 1991-02-07T11:56:53.21 10.0 positive manual PN 351 1.6428 1.35 1
--.SRN.Z. 1991-02-07T11:56:52.20 10.0 undecidable manual PN! 187 1.3653 4.23 0
--.PUK.Z. 1991-02-07T11:56:49.70 10.0 undecidable manual SG! 342 0.8325 -2.45 0
--.BDV.Z. 1991-02-07T11:56:49.34 10.0 positive manual PN 315 1.4763 -0.18 2.5
--.TTG.Z. 1991-02-07T11:56:47.70 10.0 positive manual PN 328 1.3875 -1.27 1.3
--.LSK.Z. 1991-02-07T11:56:46.10 10.0 undecidable manual PN 165 1.11 1.53 0.5
--.PVY.Z. 1991-02-07T11:56:46.79 10.0 negative manual PN 351 1.3653 -1.2 1.4
--.BCI.Z. 1991-02-07T11:56:45.50 10.0 undecidable manual PN 353 1.1322 0.74 1.1
--.TPE.Z. 1991-02-07T11:56:44.00 10.0 undecidable manual PN 189 1.0656 0.03 1.4
--.SKO.Z. 1991-02-07T11:56:43.80 10.0 undecidable manual PN 50 1.1544 -1.3 1.3
--.ULC.Z. 1991-02-07T11:56:40.50 10.0 negative manual PN! 314 1.0323 -2.89 0
--.SDA.Z. 1991-02-07T11:56:40.20 10.0 undecidable manual PG 324 0.9546 -1.71 0.4
--.OHR.Z. 1991-02-07T11:56:39.10 10.0 undecidable manual SG 106 0.4329 -0.08 0.8
--.PUK.Z. 1991-02-07T11:56:36.80 10.0 undecidable manual PG! 342 0.8325 -3.08 0
--.TIR.Z. 1991-02-07T11:56:33.70 10.0 undecidable manual SG 291 0.2997 -1.03 0.5
--.OHR.Z. 1991-02-07T11:56:31.60 10.0 positive manual PG 106 0.4329 -0.8 2.1
--.TIR.Z. 1991-02-07T11:56:29.00 10.0 positive manual PG 291 0.2997 -0.82 2
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