Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.4 on date 22-04-1993 and time 03:32:33 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude Md 2.4 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 22-04-1993 01:32:33 (UTC)
  • 22-04-1993 03:32:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1000, 6.9000 at 8 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

An earthquake occurred to
61 Km SW of Cuneo (56081 inhabitants)
77 Km W of Sanremo (54807 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 2.4
M 2.3 		1993-04-22
01:32:33		 44.1 6.9 8 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 183839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-04-22 01:32:33 ± 0.527
Latitude 44.1000 ± 0.0107
Longitude 6.9000 ± 0.0203
Depth (km) 8 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 183839

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) 2008.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.01951
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 183839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:52:33

M:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 183839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.LSD.Z. 1993-04-22T01:33:17.99 10.0 undecidable manual SN 7 1.3653 0.49 0.5
--.PCP.Z. 1993-04-22T01:33:14.74 10.0 undecidable manual SN 69 1.2543 -0.08 0.6
--.PGF.Z. 1993-04-22T01:33:10.30 10.0 undecidable manual PN 135 2.1645 0.11 1
--.CKI.Z. 1993-04-22T01:33:07.90 10.0 undecidable manual SG 71 1.0323 -1.63 0.1
--.BNI.Z. 1993-04-22T01:33:06.51 10.0 undecidable manual SG 350 0.9657 -0.69 0.2
--.LPG.Z. 1993-04-22T01:33:01.10 10.0 undecidable manual PN 356 1.3875 1.56 0.3
--.LPL.Z. 1993-04-22T01:33:01.30 10.0 undecidable manual PN 355 1.4097 1.48 0.3
--.LMR.Z. 1993-04-22T01:33:00.70 10.0 undecidable manual SG 200 0.8103 -1.75 0
--.LSD.Z. 1993-04-22T01:33:00.61 10.0 undecidable manual PN 7 1.3653 1.5 0.3
--.BHB.Z. 1993-04-22T01:32:59.88 10.0 undecidable manual SG 19 0.777 -1.33 0.1
--.PCP.Z. 1993-04-22T01:32:58.83 10.0 undecidable manual PN 69 1.2543 1.27 0.4
--.BNI.Z. 1993-04-22T01:32:57.56 10.0 undecidable manual PG! 350 0.9657 4.4 0
--.CKI.Z. 1993-04-22T01:32:54.56 10.0 undecidable manual PG 71 1.0323 0.06 1.7
--.RSP.Z. 1993-04-22T01:32:54.57 10.0 undecidable manual PN 13 1.0767 -0.59 0.9
--.FRF.Z. 1993-04-22T01:32:54.10 10.0 undecidable manual SG 199 0.5661 -0.43 0.6
--.FIN.Z. 1993-04-22T01:32:52.65 10.0 undecidable manual PG 83 0.9435 -0.14 1.7
--.SBF.Z. 1993-04-22T01:32:50.46 10.0 undecidable manual SG 121 0.444 -0.29 0.7
--.LMR.Z. 1993-04-22T01:32:50.40 10.0 undecidable manual PG 200 0.8103 -0.02 1.8
--.RRL.Z. 1993-04-22T01:32:50.36 10.0 undecidable manual PG 354 0.8214 -0.19 1.5
--.LRG.Z. 1993-04-22T01:32:49.10 10.0 undecidable manual PG 211 0.7437 -0.15 1.7
--.IMI.Z. 1993-04-22T01:32:49.40 10.0 undecidable manual PG 104 0.7326 0.43 1.4
--.BHB.Z. 1993-04-22T01:32:49.44 10.0 undecidable manual PG 19 0.777 -0.26 1.5
--.ROB.Z. 1993-04-22T01:32:49.26 10.0 undecidable manual PG 73 0.7215 0.53 1.4
--.DOI.Z. 1993-04-22T01:32:48.40 10.0 undecidable manual SG! 31 0.4662 -3.01 0
--.FRF.Z. 1993-04-22T01:32:45.90 10.0 undecidable manual PG 199 0.5661 0.06 1.8
--.DOI.Z. 1993-04-22T01:32:44.00 10.0 undecidable manual PG 31 0.4662 -0.04 1.7
--.SBF.Z. 1993-04-22T01:32:43.74 10.0 undecidable manual PG 121 0.444 0.08 1.7
--.PZZ.Z. 1993-04-22T01:32:43.17 10.0 undecidable manual PG 19 0.4218 -0.07 1.7
--.ENR.Z. 1993-04-22T01:32:42.35 10.0 undecidable manual PG 71 0.3885 -0.23 1.7
--.STV.Z. 1993-04-22T01:32:41.21 10.0 undecidable manual PG 64 0.3441 -0.43 1.4
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