A magnitude ML 2.1 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 38.5340, 12.9820 at 10 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 |
ML 2.1 | 2009-08-20 21:13:32 |
38.534 | 12.982 | 10 | 2014-10-21 12:27:13 |
Bollettino Sismico Italiano INGV | 951819 |
Field | Value |
---|---|
Time (UTC) | 2009-08-20 21:13:32 ± 0.39 |
Latitude | 38.5340 ± 0.0117 |
Longitude | 12.9820 ± 0.0379 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-SISPICK |
Event type | earthquake |
Origin ID | 951819 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 3368 |
Semi-minor axis of confidence ellipse (meter) | 1053 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 284 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 3546.8 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 222 |
Number of associated phases, regardless of their use for origin computation | 11 |
Number of defining phases | 9 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.54 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.99195 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | 0.4 |
Num. used stations | |
Type of magnitude | ML |
Reference to an origin | 951819 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-05 18:09:58 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.ALJA.HHN. | 2009-08-20T21:14:05.35 | 0.1 | undecidable | manual | Sg | 142 | 110.112 | 0.688 | 72 | |
IV.CRJA.SHZ. | 2009-08-20T21:13:56.52 | 0.1 | undecidable | manual | Sg | 179 | 81.252 | -0.445 | 83 | |
IV.CORL.HHN. | 2009-08-20T21:13:55.15 | 0.1 | undecidable | manual | Sg | 158 | 76.2681 | -0.498 | 82 | |
IV.CDCA.EHE. | 2009-08-20T21:13:55.81 | 10.0 | undecidable | manual | Pg | 0 | 0 | 0 | ||
IV.MTGR.SHZ. | 2009-08-20T21:13:53.45 | 10.0 | undecidable | manual | Pg | 0 | 0 | 0 | ||
IV.ALJA.HHN. | 2009-08-20T21:13:51.05 | 0.1 | undecidable | manual | Pg | 142 | 110.112 | -0.073 | 84 | |
IV.MMGO.SHZ. | 2009-08-20T21:13:49.77 | 0.3 | undecidable | manual | Pg | 180 | 96.7254 | 0.712 | 55 | |
IV.CRJA.SHZ. | 2009-08-20T21:13:47.15 | 0.1 | undecidable | manual | Pg | 179 | 81.252 | 0.471 | 82 | |
IV.CORL.HHN. | 2009-08-20T21:13:45.63 | 0.1 | undecidable | manual | Pg | 158 | 76.2681 | -0.281 | 86 | |
IV.USI.HHZ. | 2009-08-20T21:13:42.15 | 0.1 | undecidable | manual | Sg | 42 | 25.752 | -0.011 | 100 | |
IV.USI.HHZ. | 2009-08-20T21:13:37.97 | 0.1 | undecidable | manual | Pg | 42 | 25.752 | -0.158 | 97 |