Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 3.1 on date 11-08-1993 and time 19:12:42 (Italy) in region Macedonia [Land]

A magnitude M 3.1 earthquake occured in region: Macedonia [Land], on

  • 11-08-1993 17:12:42 (UTC)
  • 11-08-1993 19:12:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5530, 20.5680 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 3.1 1993-08-11
17:12:42		 41.553 20.568 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 193889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-08-11 17:12:42 ± 0.247
Latitude 41.5530 ± 0.0193
Longitude 20.5680 ± 0.0265
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 193889

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) 3079.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
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) 1
Epicentral distance of station closest to the epicenter (degree) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.06767
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitude information

M:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 193889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:30:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FVI.Z. 1993-08-11T17:14:34.34 10.0 undecidable manual PN! 314 7.5147 2.41 0
--.RBL.Z. 1993-08-11T17:14:27.42 10.0 undecidable manual PN! 316 7.0041 2.52 0
--.CEY.Z. 1993-08-11T17:14:15.00 10.0 undecidable manual PN! 315 6.0939 2.63 0
--.CZI.Z. 1993-08-11T17:13:46.26 10.0 undecidable manual PN 236 4.0959 1.31 0.5
--.MGR.Z. 1993-08-11T17:13:45.99 10.0 undecidable manual PN 251 4.0293 1.84 0.3
--.ROI.Z. 1993-08-11T17:13:39.35 10.0 undecidable manual PN 238 3.6186 0.95 0.7
--.IVA.Z. 1993-08-11T17:13:30.61 10.0 undecidable manual SN! 339 1.3986 4.06 0
--.BRT.Z. 1993-08-11T17:13:28.24 10.0 undecidable manual PN! 256 2.6529 3.11 0
--.TTG.Z. 1993-08-11T17:13:27.22 10.0 undecidable manual SN! 312 1.2987 3.06 0
--.PVY.Z. 1993-08-11T17:13:21.21 10.0 undecidable manual SN 337 1.1211 1.26 0.5
--.BRY.Z. 1993-08-11T17:13:18.10 10.0 positive manual PN 312 2.0091 1.82 0.9
--.ULC.Z. 1993-08-11T17:13:18.27 10.0 undecidable manual SN 293 1.0656 -0.11 0.8
--.PLE.Z. 1993-08-11T17:13:17.20 10.0 positive manual PN 334 1.9647 1.45 1.3
--.KBN.Z. 1993-08-11T17:13:16.50 10.0 undecidable manual SG 170 0.9324 1.77 0.3
--.HCY.Z. 1993-08-11T17:13:13.88 10.0 negative manual PN 301 1.7649 0.84 2
--.VAY.Z. 1993-08-11T17:13:10.60 10.0 undecidable manual PN 98 1.5096 1.14 1.7
--.BDV.Z. 1993-08-11T17:13:09.16 10.0 negative manual PN 300 1.4874 0.14 2.6
--.IVA.Z. 1993-08-11T17:13:08.16 10.0 negative manual PN 339 1.3986 0.2 2.6
--.SKO.Z. 1993-08-11T17:13:08.10 10.0 undecidable manual SG 57 0.777 -1.21 0.5
--.TTG.Z. 1993-08-11T17:13:05.54 10.0 positive manual PN 312 1.2987 -1.04 1.8
--.TIR.Z. 1993-08-11T17:13:02.00 10.0 undecidable manual SG 249 0.555 -0.67 0.7
--.PVY.Z. 1993-08-11T17:13:02.54 10.0 positive manual PN 337 1.1211 -1.62 1.1
--.ULC.Z. 1993-08-11T17:13:01.48 10.0 positive manual PN 293 1.0656 -1.77 0.9
--.KBN.Z. 1993-08-11T17:13:00.70 10.0 undecidable manual PG 170 0.9324 -0.44 1.2
--.OHR.Z. 1993-08-11T17:12:59.90 10.0 undecidable manual SG 158 0.4662 0.2 0.8
--.SKO.Z. 1993-08-11T17:12:57.30 10.0 undecidable manual PG 57 0.777 -0.71 2.2
--.TIR.Z. 1993-08-11T17:12:52.50 10.0 negative manual PG 249 0.555 -1.68 1
--.OHR.Z. 1993-08-11T17:12:51.50 10.0 undecidable manual PG 158 0.4662 -0.96 1.9
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