A magnitude Md 2.5 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 39.4280, 14.1820 at 204 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.
No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.5
ML-VAX 2.4 |
1987-10-28 01:07:14 |
39.428 | 14.182 | 204 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 57769 |
Field | Value |
---|---|
Time (UTC) | 1987-10-28 01:07:14 ± 0.454 |
Latitude | 39.4280 ± 0.0715 |
Longitude | 14.1820 ± 0.1182 |
Depth (km) | 204 ± 12 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 57769 |
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) | 12890.8 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 327 |
Number of associated phases, regardless of their use for origin computation | 6 |
Number of defining phases | 6 |
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) | 0.01449 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01789 |
Number of stations at which the event was observed | 3 |
Number of stations from which data was used for origin computation | 3 |
Field | Value |
---|---|
Value | 2.5 |
Uncertainty | |
Num. used stations | 1 |
Type of magnitude | Md |
Reference to an origin | 57769 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:55:22 |
Field | Value |
---|---|
Value | 2.4 |
Uncertainty | |
Num. used stations | 1 |
Type of magnitude | ML |
Reference to an origin | 57769 |
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 |
---|---|---|---|---|---|---|---|---|---|---|
--.SOI.Z. | 1987-10-28T01:08:22.50 | 10.0 | undecidable | manual | S | 133 | 1.9869 | -0.09 | 0.6 | |
--.GRI.Z. | 1987-10-28T01:08:19.50 | 10.0 | undecidable | manual | S | 109 | 1.8315 | -0.31 | 0.3 | |
--.ATN.Z. | 1987-10-28T01:08:16.50 | 10.0 | undecidable | manual | S | 142 | 1.6095 | 0.39 | 0.2 | |
--.SOI.Z. | 1987-10-28T01:07:53.84 | 10.0 | negative | manual | P | 133 | 1.9869 | 0 | 3.4 | |
--.GRI.Z. | 1987-10-28T01:07:52.50 | 10.0 | undecidable | manual | P | 109 | 1.8315 | 0.27 | 0.9 | |
--.ATN.Z. | 1987-10-28T01:07:49.80 | 10.0 | undecidable | manual | P | 142 | 1.6095 | -0.29 | 0.8 |