A magnitude Md 2.3 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 38.4430, 15.3080 at 102 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 | 1991-08-08 02:08:31 |
38.443 | 15.308 | 102 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 147119 |
Field | Value |
---|---|
Time (UTC) | 1991-08-08 02:08:31 ± 0.84 |
Latitude | 38.4430 ± 0.0568 |
Longitude | 15.3080 ± 0.1289 |
Depth (km) | 102 ± 12 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 147119 |
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) | 12883.6 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 254 |
Number of associated phases, regardless of their use for origin computation | 8 |
Number of defining phases | 8 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.4 |
Epicentral distance of station closest to the epicenter (degree) | 0.00478 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00899 |
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 | 2.3 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | Md |
Reference to an origin | 147119 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:17:19 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.GRI.Z. | 1991-08-08T02:09:06.83 | 10.0 | undecidable | manual | S | 66 | 0.9435 | -0.02 | 0.8 | |
--.CZI.Z. | 1991-08-08T02:09:06.80 | 10.0 | undecidable | manual | S | 39 | 0.999 | -1.14 | 0.1 | |
--.SOI.Z. | 1991-08-08T02:09:02.98 | 10.0 | undecidable | manual | S | 122 | 0.6882 | 0.44 | 0.6 | |
--.MO9.Z. | 1991-08-08T02:09:01.00 | 10.0 | undecidable | manual | S | 145 | 0.5328 | 0.72 | 0.4 | |
--.CZI.Z. | 1991-08-08T02:08:53.42 | 10.0 | undecidable | manual | P | 39 | 0.999 | 0.71 | 0.8 | |
--.GRI.Z. | 1991-08-08T02:08:52.23 | 10.0 | undecidable | manual | P | 66 | 0.9435 | 0.15 | 1.9 | |
--.SOI.Z. | 1991-08-08T02:08:49.15 | 10.0 | undecidable | manual | P | 122 | 0.6882 | -0.44 | 1.6 | |
--.MO9.Z. | 1991-08-08T02:08:47.88 | 10.0 | undecidable | manual | P | 145 | 0.5328 | -0.41 | 1.7 |