A magnitude Md 2.3 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 38.6750, 15.4400 at 5 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 2.3 | 1987-04-04 07:32:17 |
38.675 | 15.44 | 5 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 44169 |
Field | Value |
---|---|
Time (UTC) | 1987-04-04 07:32:17 ± 0.598 |
Latitude | 38.6750 ± 0.0311 |
Longitude | 15.4400 ± 0.0480 |
Depth (km) | 5 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 44169 |
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) | 5415.3 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 216 |
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) | 0.6 |
Epicentral distance of station closest to the epicenter (degree) | 0.00461 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01077 |
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 | 2.3 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 44169 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:43:38 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.GR9.Z. | 1987-04-04T07:32:46.00 | 10.0 | undecidable | manual | SG | 79 | 0.777 | 0.54 | 0.9 | |
--.TS9.Z. | 1987-04-04T07:32:41.28 | 10.0 | undecidable | manual | PN | 34 | 1.1988 | 0.51 | 1.2 | |
--.ATN.Z. | 1987-04-04T07:32:38.00 | 10.0 | undecidable | manual | SG | 178 | 0.5106 | 1.14 | 0.2 | |
--.GR9.Z. | 1987-04-04T07:32:32.80 | 10.0 | undecidable | manual | PG | 79 | 0.777 | -0.79 | 1.1 | |
--.ATN.Z. | 1987-04-04T07:32:28.10 | 10.0 | undecidable | manual | PG | 178 | 0.5106 | -0.53 | 1.6 |