INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Md 2.7 on date 13-12-1985 and time 05:44:09 (UTC) in region Confine Italia Francia (FRANCIA)

A magnitude Md 2.7 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 13-12-1985 05:44:09 (UTC)
  • 13-12-1985 06:44:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.34, 6.6 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.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
76 Km W 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
Rev 1000 Md 2.7 1985-12-13
05:44:09
44.34 6.6 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 17999
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-13 05:44:09 ± 0.697
Latitude 44.34 ± 0.03
Longitude 6.60 ± 0.05
Depth (km) 10 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 17999

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) 4818.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 250
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.00437
Epicentral distance of station farthest from the epicenter (degree) 0.01943
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 17999
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FIN.Z. 1985-12-13T05:44:47.90 10.0 undecidable manual SN 96 0.0104 0.27 0.7
--.VAI.Z. 1985-12-13T05:44:46.00 10.0 undecidable manual PN 44 0.0194 0.62 0.5
--.CO9.Z. 1985-12-13T05:44:44.50 10.0 undecidable manual PN 77 0.0186 0.36 0.8
--.IMP.Z. 1985-12-13T05:44:43.30 10.0 undecidable manual SG 114 0.0091 -0.89 0.2
--.ROB.Z. 1985-12-13T05:44:40.40 10.0 undecidable manual SG 92 0.0081 -0.33 0.7
--.ORO.Z. 1985-12-13T05:44:38.50 10.0 undecidable manual PN 37 0.0145 0.61 0.6
--.BN9.Z. 1985-12-13T05:44:33.00 10.0 undecidable manual SG 4 0.0064 -1.55 0
--.CKI.Z. 1985-12-13T05:44:33.00 10.0 undecidable manual PN 85 0.0108 0.83 0.5
--.FIN.Z. 1985-12-13T05:44:31.70 10.0 positive manual PN 96 0.0104 0.12 2.7
--.IMP.Z. 1985-12-13T05:44:29.20 10.0 positive manual PG 114 0.0091 -0.4 2.2
--.DA9.Z. 1985-12-13T05:44:27.00 10.0 undecidable manual SG 70 0.0044 -0.21 0.5
--.ROB.Z. 1985-12-13T05:44:27.50 10.0 undecidable manual PG 92 0.0081 -0.1 1.4
--.BN9.Z. 1985-12-13T05:44:23.00 10.0 undecidable manual PG 4 0.0064 -1.03 0.3
--.DA9.Z. 1985-12-13T05:44:20.00 10.0 positive manual PG 70 0.0044 0.21 2.7
--.STV.Z. 1985-12-13T05:44:20.10 10.0 undecidable manual PG 99 0.0047 -0.42 1.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download