Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.3 on date 18-12-1989 and time 12:15:39 (UTC) in region Confine Italia Francia (FRANCIA)

A magnitude Md 2.3 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 18-12-1989 12:15:39 (UTC)
  • 18-12-1989 13:15:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3160, 6.7470 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
Argentera CN 19 83 83

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km W of Cuneo (56081 inhabitants)
100 Km NW 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 2.3
M 2.2 		1989-12-18
12:15:39		 44.316 6.747 10 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 106219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-12-18 12:15:39 ± 0.179
Latitude 44.3160 ± 0.0079
Longitude 6.7470 ± 0.0164
Depth (km) 10 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 106219

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) 1570.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
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) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.01166
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 106219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:38:56

M:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 106219
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
--.LMR.Z. 1989-12-18T12:16:12.80 10.0 undecidable manual SG 190 0.9879 -1.07 0.1
--.LRG.Z. 1989-12-18T12:16:10.60 10.0 undecidable manual SG 198 0.8991 -0.32 0.6
--.IMI.Z. 1989-12-18T12:16:10.65 10.0 undecidable manual SG 116 0.9102 -0.63 0.4
--.BNI.Z. 1989-12-18T12:16:05.00 10.0 undecidable manual SG 356 0.7326 -0.52 0.5
--.FRF.Z. 1989-12-18T12:16:05.80 10.0 undecidable manual SG 185 0.7548 -0.38 0.6
--.PCP.Z. 1989-12-18T12:16:05.18 10.0 undecidable manual PN 79 1.2987 1.31 0.1
--.SBF.Z. 1989-12-18T12:16:03.10 10.0 undecidable manual SG 132 0.666 -0.25 0.7
--.LPG.Z. 1989-12-18T12:16:02.40 10.0 undecidable manual PN 0 1.1766 0.2 1.4
--.LPL.Z. 1989-12-18T12:16:02.90 10.0 undecidable manual PN 359 1.1988 0.45 1.1
--.LSD.Z. 1989-12-18T12:16:02.40 10.0 undecidable manual PN 14 1.1655 0.25 1.4
--.RRL.Z. 1989-12-18T12:16:00.14 10.0 undecidable manual SG 2 0.5994 -1.09 0.1
--.LMR.Z. 1989-12-18T12:16:00.10 10.0 undecidable manual PG 190 0.9879 0.57 1
--.FIN.Z. 1989-12-18T12:16:00.19 10.0 undecidable manual PN 95 1.0434 -0.23 1.5
--.LRG.Z. 1989-12-18T12:15:59.00 10.0 undecidable manual PG 198 0.8991 1.17 0.2
--.RSP.Z. 1989-12-18T12:15:58.12 10.0 undecidable manual PG 23 0.9102 0.2 1.6
--.IMI.Z. 1989-12-18T12:15:57.95 10.0 undecidable manual PG 116 0.9102 -0.09 1.7
--.ENR.Z. 1989-12-18T12:15:56.75 10.0 undecidable manual SG 100 0.4884 -0.82 0.3
--.FRF.Z. 1989-12-18T12:15:55.00 10.0 undecidable manual PG 185 0.7548 -0.09 1.9
--.ROB.Z. 1989-12-18T12:15:55.96 10.0 undecidable manual PG 90 0.7992 -0.02 1.9
--.STV.Z. 1989-12-18T12:15:54.61 10.0 undecidable manual SG 98 0.4107 -0.78 0.3
--.SBF.Z. 1989-12-18T12:15:54.00 10.0 undecidable manual PG 132 0.666 0.54 1.2
--.BNI.Z. 1989-12-18T12:15:54.00 10.0 undecidable manual PG 356 0.7326 -0.71 0.9
--.PZZ.Z. 1989-12-18T12:15:51.73 10.0 undecidable manual SG 53 0.3108 -0.25 0.7
--.RRL.Z. 1989-12-18T12:15:51.93 10.0 undecidable manual PG 2 0.5994 -0.3 1.6
--.ENR.Z. 1989-12-18T12:15:50.19 10.0 undecidable manual PG 100 0.4884 0.07 1.9
--.STV.Z. 1989-12-18T12:15:48.96 10.0 undecidable manual PG 98 0.4107 0.1 1.9
--.PZZ.Z. 1989-12-18T12:15:47.23 10.0 undecidable manual PG 53 0.3108 0.34 1.6
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