Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.1 on date 30-10-1993 and time 06:45:12 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude Md 2.1 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 30-10-1993 05:45:12 (UTC)
  • 30-10-1993 06:45:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.8300, 6.7410 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
Claviere TO 12 214 214
Cesana Torinese TO 14 967 1181
Sauze di Cesana TO 16 244 1425
Sestriere TO 18 929 2354

Municipalities with at least 50000 inhabitants

An earthquake occurred to
77 Km W of Moncalieri (57294 inhabitants)
79 Km W of Torino (890529 inhabitants)
80 Km NW of Cuneo (56081 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 2.1
ML-VAX 1.8 		1993-10-30
05:45:12		 44.83 6.741 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 199159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-10-30 05:45:12 ± 0.187
Latitude 44.8300 ± 0.0091
Longitude 6.7410 ± 0.0255
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 199159

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) 2255.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.01352
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 199159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:07:11

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 199159
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
--.LMR.Z. 1993-10-30T05:45:40.30 10.0 undecidable manual PN 186 1.4985 0.62 0.7
--.LRG.Z. 1993-10-30T05:45:39.00 10.0 undecidable manual PN 191 1.3875 0.73 0.5
--.PCP.Z. 1993-10-30T05:45:37.50 10.0 undecidable manual PN 102 1.3098 0.43 1
--.ORX.Z. 1993-10-30T05:45:36.00 10.0 undecidable manual PN 47 1.1766 0.7 0.7
--.FIN.Z. 1993-10-30T05:45:36.60 10.0 undecidable manual PN 120 1.2099 0.87 0.4
--.FRF.Z. 1993-10-30T05:45:36.40 10.0 undecidable manual PN 183 1.2654 -0.07 1.3
--.IMI.Z. 1993-10-30T05:45:35.20 10.0 undecidable manual PN 137 1.2321 -0.77 0.5
--.SBF.Z. 1993-10-30T05:45:34.50 10.0 undecidable manual PN 152 1.0767 0.56 0.9
--.ROB.Z. 1993-10-30T05:45:31.60 10.0 undecidable manual PG 122 0.9657 -0.34 1.3
--.DOI.Z. 1993-10-30T05:45:29.96 10.0 undecidable manual SG 132 0.4773 -0.49 0.5
--.ENR.Z. 1993-10-30T05:45:28.00 10.0 undecidable manual PG 141 0.7659 -0.41 1.3
--.LPG.Z. 1993-10-30T05:45:26.20 10.0 undecidable manual PG 0 0.666 -0.25 1.6
--.STV.Z. 1993-10-30T05:45:26.40 10.0 undecidable manual PG 143 0.7104 -0.92 0.5
--.LPL.Z. 1993-10-30T05:45:26.40 10.0 undecidable manual PG 359 0.6882 -0.39 1.4
--.LSD.Z. 1993-10-30T05:45:26.70 10.0 undecidable manual PG 24 0.6882 -0.21 1.6
--.DOI.Z. 1993-10-30T05:45:23.31 10.0 undecidable manual PG 132 0.4773 0.24 1.6
--.RSP.Z. 1993-10-30T05:45:23.70 10.0 undecidable manual PG 48 0.4884 0.61 1
--.BNI.Z. 1993-10-30T05:45:21.75 10.0 undecidable manual SG 348 0.222 -0.4 0.5
--.BHB.Z. 1993-10-30T05:45:21.22 10.0 undecidable manual PG 89 0.3663 0.28 1.6
--.PZZ.Z. 1993-10-30T05:45:20.80 10.0 undecidable manual PG 141 0.4107 -0.95 0.4
--.BNI.Z. 1993-10-30T05:45:17.65 10.0 undecidable manual PG 348 0.222 -0.62 1
--.RRL.Z. 1993-10-30T05:45:16.10 10.0 undecidable manual PG 18 0.0888 0.22 1.6
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