Earthquake with magnitude of M 2.9 on date 07-02-1985 and time 17:45:32 (Italy) in region Costa Francese (FRANCIA)

A magnitude M 2.9 earthquake occured in region: Costa Francese (FRANCIA), on

  • 07-02-1985 16:45:32 (UTC)
  • 07-02-1985 17:45:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.96, 6.08 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

No Italian municipalities within 100 km from the epicenter with at least 50000 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 M 2.9 1985-02-07
16:45:32
42.97 6.08 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 1289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-07 16:45:32 ± 0.906
Latitude 42.97 ± 0.09
Longitude 6.08 ± 0.14
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1289

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) 14915
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 341
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.01408
Epicentral distance of station farthest from the epicenter (degree) 0.01935
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

M:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1289
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 Takeoff_angle Residual Weight
--.CK1.Z. 1985-02-07T16:46:35.00 10.0 undecidable manual SN 47 0.0193 1.02 0.2
--.FIN.Z. 1985-02-07T16:46:30.50 10.0 undecidable manual SN 51 0.0178 0.66 0.4
--.ROB.Z. 1985-02-07T16:46:27.70 10.0 undecidable manual SN 44 0.0168 0.65 0.5
--.ENR.Z. 1985-02-07T16:46:20.70 10.0 undecidable manual SN 38 0.0143 0.11 0.8
--.STV.Z. 1985-02-07T16:46:19.50 10.0 undecidable manual SN 35 0.0141 -0.64 0.5
--.IMP.Z. 1985-02-07T16:46:19.50 10.0 undecidable manual SN 54 0.0146 -1.89 0
--.CK1.Z. 1985-02-07T16:46:07.50 10.0 undecidable manual PN 47 0.0193 -0.39 1.5
--.FIN.Z. 1985-02-07T16:46:06.20 10.0 undecidable manual PN 51 0.0178 0.7 1
--.ROB.Z. 1985-02-07T16:46:04.10 10.0 undecidable manual PN 44 0.0168 0.21 1.9
--.IMP.Z. 1985-02-07T16:46:00.40 10.0 undecidable manual PN 54 0.0146 -0.22 1.9
--.ENR.Z. 1985-02-07T16:46:00.40 10.0 undecidable manual PN 38 0.0143 0.23 1.9
--.STV.Z. 1985-02-07T16:45:59.40 10.0 undecidable manual PN 35 0.0141 -0.5 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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