A magnitude Md 2.4 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 38.6410, 15.4520 at 133 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 2.4 | 1991-10-18 16:37:20 |
38.641 | 15.452 | 133 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 151169 |
Field | Value |
---|---|
Time (UTC) | 1991-10-18 16:37:20 ± 0.72 |
Latitude | 38.6410 ± 0.0259 |
Longitude | 15.4520 ± 0.1194 |
Depth (km) | 133 ± 8 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 151169 |
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) | 10758.5 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 214 |
Number of associated phases, regardless of their use for origin computation | 10 |
Number of defining phases | 10 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.2 |
Epicentral distance of station closest to the epicenter (degree) | 0.00599 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01182 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 2.4 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 151169 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:21:05 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.ROI.Z. | 1991-10-18T16:38:06.85 | 10.0 | undecidable | manual | S | 42 | 1.2654 | 1.09 | 0 | |
--.CZI.Z. | 1991-10-18T16:37:57.65 | 10.0 | undecidable | manual | S | 42 | 0.777 | -0.2 | 0.4 | |
--.SOI.Z. | 1991-10-18T16:37:56.63 | 10.0 | undecidable | manual | S | 140 | 0.7326 | -0.62 | 0.1 | |
--.MMN.Z. | 1991-10-18T16:37:47.20 | 10.0 | undecidable | manual | P | 18 | 1.3098 | 0.03 | 2.2 | |
--.ROI.Z. | 1991-10-18T16:37:46.62 | 10.0 | undecidable | manual | P | 42 | 1.2654 | -0.07 | 1.1 | |
--.CSI.Z. | 1991-10-18T16:37:46.85 | 10.0 | undecidable | manual | P | 29 | 1.3098 | -0.31 | 0.7 | |
--.GRI.Z. | 1991-10-18T16:37:42.00 | 10.0 | undecidable | manual | P | 76 | 0.777 | -0.07 | 1.3 | |
--.CZI.Z. | 1991-10-18T16:37:42.00 | 10.0 | undecidable | manual | P | 42 | 0.777 | -0.13 | 2.4 | |
--.MO9.Z. | 1991-10-18T16:37:41.70 | 10.0 | undecidable | manual | P | 163 | 0.666 | 0.46 | 0.5 | |
--.SOI.Z. | 1991-10-18T16:37:41.83 | 10.0 | undecidable | manual | P | 140 | 0.7326 | 0.05 | 1.3 |