A magnitude Md 2.4 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 38.9750, 15.4720 at 178 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
ML-VAX 2.0 |
1991-10-17 02:35:26 |
38.975 | 15.472 | 178 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 151089 |
Field | Value |
---|---|
Time (UTC) | 1991-10-17 02:35:26 ± 2.425 |
Latitude | 38.9750 ± 0.0351 |
Longitude | 15.4720 ± 0.1578 |
Depth (km) | 178 ± 22 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 151089 |
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) | 14186.6 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 228 |
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) | 0.3 |
Epicentral distance of station closest to the epicenter (degree) | 0.00510 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00931 |
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 | 3 |
Type of magnitude | Md |
Reference to an origin | 151089 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:21:00 |
Field | Value |
---|---|
Value | 2.0 |
Uncertainty | |
Num. used stations | 1 |
Type of magnitude | ML |
Reference to an origin | 151089 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2015-04-28 13:07:13 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.CZI.Z. | 1991-10-17T02:36:12.20 | 10.0 | undecidable | manual | S ! | 64 | 0.5661 | 2.69 | 0 | |
--.MO9.Z. | 1991-10-17T02:35:54.10 | 10.0 | undecidable | manual | P | 170 | 0.9768 | 0.22 | 0.7 | |
--.CSI.Z. | 1991-10-17T02:35:54.45 | 10.0 | undecidable | manual | P | 38 | 1.0212 | 0.35 | 1 | |
--.ROI.Z. | 1991-10-17T02:35:53.75 | 10.0 | undecidable | manual | P | 54 | 1.0323 | -0.41 | 0.9 | |
--.SOI.Z. | 1991-10-17T02:35:53.72 | 10.0 | negative | manual | P | 153 | 1.0101 | -0.24 | 1.4 | |
--.GRI.Z. | 1991-10-17T02:35:52.65 | 10.0 | positive | manual | P | 101 | 0.7437 | 0.47 | 0.8 | |
--.ACI.Z. | 1991-10-17T02:35:51.80 | 10.0 | undecidable | manual | P | 56 | 0.6771 | 0.05 | 1 | |
--.CZI.Z. | 1991-10-17T02:35:50.85 | 10.0 | undecidable | manual | P | 64 | 0.5661 | -0.32 | 1.3 |