Earthquake with magnitude of Md 2.0 on date 12-08-1987 and time 07:44:05 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude Md 2.0 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 12-08-1987 05:44:05 (UTC)
  • 12-08-1987 07:44:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.38, 6.69 at 15 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
69 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 2.0
M 2.2
1987-08-12
05:44:05
44.38 6.69 15 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 53749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-08-12 05:44:05 ± 0.336
Latitude 44.38 ± 0.02
Longitude 6.69 ± 0.02
Depth (km) 15 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 53749

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) 2667.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 309
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.00988
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 53749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:51:50

M:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 53749
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
--.ROB.Z. 1987-08-12T05:44:34.50 10.0 undecidable manual SG 95 0.0076 -0.02 0.7
--.FIN.Z. 1987-08-12T05:44:25.20 10.0 undecidable manual PN 98 0.0099 -0.59 0.4
--.IMI.Z. 1987-08-12T05:44:24.50 10.0 undecidable manual PN 118 0.0088 0.32 0.5
--.ROB.Z. 1987-08-12T05:44:22.30 10.0 undecidable manual PG 95 0.0076 0.17 1.4
--.STV.Z. 1987-08-12T05:44:22.30 10.0 undecidable manual SG 106 0.0043 -0.27 0.4
--.DOI.Z. 1987-08-12T05:44:21.00 10.0 undecidable manual SG 73 0.0037 0.37 0.3
--.PZZ.Z. 1987-08-12T05:44:17.50 10.0 undecidable manual SG 67 0.0028 -0.08 0.8
--.STV.Z. 1987-08-12T05:44:15.20 10.0 undecidable manual PG 106 0.0043 -0.03 2
--.DOI.Z. 1987-08-12T05:44:14.20 10.0 undecidable manual PG 73 0.0037 0.09 1.9
--.PZZ.Z. 1987-08-12T05:44:12.20 10.0 undecidable manual PG 67 0.0028 -0.15 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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