A magnitude Md 2.2 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 38.6450, 15.3820 at 160 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 2.2
ML-VAX 1.7 |
1987-10-24 20:40:51 |
38.645 | 15.382 | 160 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 57569 |
Field | Value |
---|---|
Time (UTC) | 1987-10-24 20:40:51 ± 0.191 |
Latitude | 38.6450 ± 0.0143 |
Longitude | 15.3820 ± 0.0223 |
Depth (km) | 160 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 57569 |
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) | 2503.6 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 264 |
Number of associated phases, regardless of their use for origin computation | 5 |
Number of defining phases | 5 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0 |
Epicentral distance of station closest to the epicenter (degree) | 0.00437 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00745 |
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 | 2.2 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | Md |
Reference to an origin | 57569 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:55:11 |
Field | Value |
---|---|
Value | 1.7 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | ML |
Reference to an origin | 57569 |
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. | 1987-10-24T20:41:33.11 | 10.0 | undecidable | manual | S | 137 | 0.777 | 0.1 | 0.2 | |
--.ATN.Z. | 1987-10-24T20:41:30.00 | 10.0 | undecidable | manual | S | 172 | 0.4884 | -0.11 | 0.2 | |
--.SOI.Z. | 1987-10-24T20:41:15.25 | 10.0 | negative | manual | P | 137 | 0.777 | -0.04 | 1.8 | |
--.GRI.Z. | 1987-10-24T20:41:15.64 | 10.0 | positive | manual | P | 77 | 0.8214 | 0 | 1.9 | |
--.ATN.Z. | 1987-10-24T20:41:13.69 | 10.0 | undecidable | manual | P | 172 | 0.4884 | 0.07 | 0.8 |