A magnitude M 2.1 earthquake occured in region: Confine Italia Francia (FRANCIA), on
and geographic coordinates (lat, lon) 43.9400, 7.2630 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.
No Italian municipalities within 20 km distance.
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
M 2.1 | 1987-02-25 22:10:31 |
43.94 | 7.263 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 42019 |
Field | Value |
---|---|
Time (UTC) | 1987-02-25 22:10:31 ± 0.522 |
Latitude | 43.9400 ± 0.0243 |
Longitude | 7.2630 ± 0.0284 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 42019 |
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) | 3532.4 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 280 |
Number of associated phases, regardless of their use for origin computation | 8 |
Number of defining phases | 8 |
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) | 0.00656 |
Number of stations at which the event was observed | 4 |
Number of stations from which data was used for origin computation | 4 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | |
Num. used stations | |
Type of magnitude | M |
Reference to an origin | 42019 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2015-04-28 09:48:29 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.FIN.Z. | 1987-02-25T22:10:57.70 | 10.0 | undecidable | manual | SG | 68 | 0.7326 | 0.6 | 0.1 | |
--.SOO.Z. | 1987-02-25T22:10:52.60 | 10.0 | undecidable | manual | SG | 348 | 0.5772 | 0.42 | 0.3 | |
--.ROB.Z. | 1987-02-25T22:10:51.20 | 10.0 | undecidable | manual | SG | 50 | 0.5661 | -0.7 | 0.1 | |
--.FIN.Z. | 1987-02-25T22:10:46.60 | 10.0 | undecidable | manual | PG | 68 | 0.7326 | 0.21 | 1.4 | |
--.ROB.Z. | 1987-02-25T22:10:43.10 | 10.0 | undecidable | manual | PG | 50 | 0.5661 | -0.28 | 1.4 | |
--.SOO.Z. | 1987-02-25T22:10:43.40 | 10.0 | undecidable | manual | PG | 348 | 0.5772 | -0.15 | 1.8 | |
--.STV.Z. | 1987-02-25T22:10:43.90 | 10.0 | undecidable | manual | SG | 8 | 0.3108 | 0.12 | 0.8 | |
--.STV.Z. | 1987-02-25T22:10:38.70 | 10.0 | undecidable | manual | PG | 8 | 0.3108 | 0.01 | 2.1 |