A magnitude Md 2.4 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 39.3920, 15.5580 at 16 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 |
Md 2.4
ML-VAX 2.0 |
1987-08-23 20:37:24 |
39.392 | 15.558 | 16 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 54409 |
Field | Value |
---|---|
Time (UTC) | 1987-08-23 20:37:24 ± 0.383 |
Latitude | 39.3920 ± 0.0166 |
Longitude | 15.5580 ± 0.0247 |
Depth (km) | 16 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 54409 |
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) | 2818.2 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 220 |
Number of associated phases, regardless of their use for origin computation | 11 |
Number of defining phases | 11 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.3 |
Epicentral distance of station closest to the epicenter (degree) | 0.00534 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01060 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 2.4 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | Md |
Reference to an origin | 54409 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:52:26 |
Field | Value |
---|---|
Value | 2.0 |
Uncertainty | |
Num. used stations | 5 |
Type of magnitude | ML |
Reference to an origin | 54409 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2015-04-28 13:07:13 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.SGO.Z. | 1987-08-23T20:38:02.60 | 10.0 | undecidable | manual | SN | 351 | 1.1766 | -0.28 | 0.4 | |
--.MGR.Z. | 1987-08-23T20:37:51.25 | 10.0 | undecidable | manual | SG | 0 | 0.7326 | 0.34 | 0.4 | |
--.CSI.Z. | 1987-08-23T20:37:49.60 | 10.0 | undecidable | manual | SG | 55 | 0.6882 | 0.49 | 0.3 | |
--.SGO.Z. | 1987-08-23T20:37:46.38 | 10.0 | undecidable | manual | PN | 351 | 1.1766 | -0.17 | 1.4 | |
--.ORI.Z. | 1987-08-23T20:37:43.33 | 10.0 | undecidable | manual | PN | 45 | 0.9435 | 0.01 | 1.8 | |
--.GRI.Z. | 1987-08-23T20:37:42.78 | 10.0 | undecidable | manual | PN | 130 | 0.8769 | 0.4 | 0.9 | |
--.ROI.Z. | 1987-08-23T20:37:40.60 | 10.0 | undecidable | manual | PG | 76 | 0.7881 | -0.34 | 1.1 | |
--.MGR.Z. | 1987-08-23T20:37:39.88 | 10.0 | undecidable | manual | PG | 0 | 0.7326 | -0.06 | 1.9 | |
--.CSI.Z. | 1987-08-23T20:37:38.60 | 10.0 | undecidable | manual | PG | 55 | 0.6882 | -0.31 | 1.2 | |
--.TS9.Z. | 1987-08-23T20:37:37.95 | 10.0 | undecidable | manual | PG | 66 | 0.6549 | -0.37 | 1 | |
--.MMN.Z. | 1987-08-23T20:37:37.80 | 10.0 | undecidable | manual | PG | 33 | 0.5883 | 0.55 | 0.5 |