A magnitude Md 2.1 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 38.5670, 15.4830 at 108 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 2.1 | 1988-04-16 21:59:54 |
38.567 | 15.483 | 108 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 66589 |
Field | Value |
---|---|
Time (UTC) | 1988-04-16 21:59:54 ± 0.054 |
Latitude | 38.5670 ± 0.0025 |
Longitude | 15.4830 ± 0.0040 |
Depth (km) | 108 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 66589 |
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) | 448.4 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 194 |
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) | 0.00364 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01238 |
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 | 2 |
Type of magnitude | Md |
Reference to an origin | 66589 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 18:03:03 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.ATN.Z. | 1988-04-16T22:00:22.99 | 10.0 | undecidable | manual | S | 182 | 0.3996 | -0.01 | 0.5 | |
--.MMN.Z. | 1988-04-16T22:00:20.40 | 10.0 | undecidable | manual | P | 16 | 1.3764 | -0.02 | 0.9 | |
--.CZI.Z. | 1988-04-16T22:00:14.45 | 10.0 | undecidable | manual | P | 37 | 0.8214 | 0.03 | 1.2 | |
--.GRI.Z. | 1988-04-16T22:00:13.94 | 10.0 | undecidable | manual | P | 70 | 0.777 | -0.02 | 1.2 | |
--.ATN.Z. | 1988-04-16T22:00:11.17 | 10.0 | undecidable | manual | P | 182 | 0.3996 | 0.01 | 1.3 |