Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.4 on date 28-09-1993 and time 09:33:38 (UTC) in region Confine Italia Francia (FRANCIA)

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

  • 28-09-1993 09:33:38 (UTC)
  • 28-09-1993 10:33:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1090, 7.4090 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Entracque CN 15 774 774
Limone Piemonte CN 17 1485 2259
Vernante CN 18 1178 3437
Roaschia CN 18 107 3544
Valdieri CN 19 935 4479

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Cuneo (56081 inhabitants)
44 Km NW of Sanremo (54807 inhabitants)
88 Km W of Savona (61345 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 2.9 		1993-09-28
09:33:38		 44.109 7.409 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 197169
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-09-28 09:33:38 ± 0.122
Latitude 44.1090 ± 0.0077
Longitude 7.4090 ± 0.0125
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 197169

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) 1317.7
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 36
Number of defining phases 36
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) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.01740
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 197169
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:05:18

M:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 197169
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
--.PGF.Z. 1993-09-28T09:34:33.10 10.0 undecidable manual SN! 142 1.9314 -2.44 0
--.LSD.Z. 1993-09-28T09:34:21.90 10.0 undecidable manual SN 352 1.3542 0.2 0.5
--.BNI.Z. 1993-09-28T09:34:15.50 10.0 undecidable manual SN 331 1.0656 0.54 0.5
--.LRG.Z. 1993-09-28T09:34:12.10 10.0 undecidable manual SG 229 0.999 -0.81 0.2
--.LMR.Z. 1993-09-28T09:34:12.10 10.0 undecidable manual SG 220 1.0101 -1.17 0.1
--.PGF.Z. 1993-09-28T09:34:11.00 10.0 undecidable manual PN 142 1.9314 -0.6 0.7
--.RRL.Z. 1993-09-28T09:34:08.50 10.0 undecidable manual SG! 331 0.9213 -1.99 0
--.PCP.Z. 1993-09-28T09:34:08.50 10.0 undecidable manual SG 61 0.9213 -1.82 0
--.LPL.Z. 1993-09-28T09:34:06.20 10.0 undecidable manual PN 341 1.4874 0.86 0.5
--.LPG.Z. 1993-09-28T09:34:06.20 10.0 undecidable manual PN 341 1.4541 1.16 0.2
--.FRF.Z. 1993-09-28T09:34:05.30 10.0 undecidable manual SG 225 0.777 -0.43 0.6
--.LSD.Z. 1993-09-28T09:34:04.87 10.0 undecidable manual PN 352 1.3542 1.26 0.2
--.CKI.Z. 1993-09-28T09:34:02.42 10.0 undecidable manual SG 63 0.6882 -0.71 0.4
--.BNI.Z. 1993-09-28T09:34:00.50 10.0 undecidable manual PN 331 1.0656 0.78 0.8
--.RSP.Z. 1993-09-28T09:33:59.10 10.0 undecidable manual PN 354 1.0434 -0.22 1.5
--.FIN.Z. 1993-09-28T09:33:58.60 10.0 undecidable manual SG 79 0.5772 -0.88 0.3
--.LRG.Z. 1993-09-28T09:33:58.50 10.0 undecidable manual PG 229 0.999 -0.04 1.7
--.LMR.Z. 1993-09-28T09:33:58.60 10.0 undecidable manual PG 220 1.0101 -0.14 1.6
--.PCP.Z. 1993-09-28T09:33:56.95 10.0 undecidable manual PG 61 0.9213 -0.09 1.7
--.RRL.Z. 1993-09-28T09:33:56.87 10.0 undecidable manual PG 331 0.9213 -0.27 1.5
--.FRF.Z. 1993-09-28T09:33:54.40 10.0 undecidable manual PG 225 0.777 0.01 1.9
--.PZZ.Z. 1993-09-28T09:33:54.10 10.0 undecidable manual SG 331 0.444 -1.23 0.1
--.BHB.Z. 1993-09-28T09:33:53.20 10.0 undecidable manual PG 351 0.7326 -0.36 1.5
--.DOI.Z. 1993-09-28T09:33:53.46 10.0 undecidable manual SG 343 0.3996 -0.54 0.4
--.IMI.Z. 1993-09-28T09:33:53.50 10.0 undecidable manual SG 119 0.3996 -0.17 0.7
--.CKI.Z. 1993-09-28T09:33:52.96 10.0 positive manual PG 63 0.6882 0.07 3.7
--.FIN.Z. 1993-09-28T09:33:50.93 10.0 undecidable manual PG 79 0.5772 0.15 1.8
--.SBF.Z. 1993-09-28T09:33:48.80 10.0 undecidable manual SG 175 0.2442 0.08 0.7
--.PZZ.Z. 1993-09-28T09:33:48.60 10.0 undecidable manual PG 331 0.444 -0.33 1.5
--.IMI.Z. 1993-09-28T09:33:47.85 10.0 undecidable manual PG 119 0.3996 0.43 1.4
--.DOI.Z. 1993-09-28T09:33:47.61 10.0 undecidable manual PG 343 0.3996 -0.01 1.9
--.SBF.Z. 1993-09-28T09:33:45.10 10.0 undecidable manual PG 175 0.2442 0.54 1.2
--.ENR.Z. 1993-09-28T09:33:44.20 10.0 undecidable manual SG 3 0.1221 -0.39 0.6
--.STV.Z. 1993-09-28T09:33:44.90 10.0 undecidable manual SG 338 0.1554 -0.82 0.2
--.ENR.Z. 1993-09-28T09:33:42.59 10.0 undecidable manual PG 3 0.1221 0.41 1.2
--.STV.Z. 1993-09-28T09:33:42.90 10.0 undecidable manual PG 338 0.1554 0.07 1.9
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download