A magnitude Md 2.3 earthquake occured in region: Mar Ionio Settentrionale (MARE), on
and geographic coordinates (lat, lon) 37.7990, 16.4310 at 29 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
ML-VAX 2.1 |
1991-04-21 16:17:53 |
37.799 | 16.431 | 29 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 139769 |
Field | Value |
---|---|
Time (UTC) | 1991-04-21 16:17:53 ± 0.517 |
Latitude | 37.7990 ± 0.0281 |
Longitude | 16.4310 ± 0.0390 |
Depth (km) | 29 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 139769 |
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) | 4636.4 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 234 |
Number of associated phases, regardless of their use for origin computation | 21 |
Number of defining phases | 21 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.5 |
Epicentral distance of station closest to the epicenter (degree) | 0.00324 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01287 |
Number of stations at which the event was observed | 13 |
Number of stations from which data was used for origin computation | 13 |
Field | Value |
---|---|
Value | 2.3 |
Uncertainty | |
Num. used stations | 5 |
Type of magnitude | Md |
Reference to an origin | 139769 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:10:27 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | |
Num. used stations | 5 |
Type of magnitude | ML |
Reference to an origin | 139769 |
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 |
---|---|---|---|---|---|---|---|---|---|---|
--.MNO.Z. | 1991-04-21T16:18:35.40 | 10.0 | undecidable | manual | SN | 275 | 1.3764 | 1.53 | 0.2 | |
--.PZI.Z. | 1991-04-21T16:18:33.19 | 10.0 | undecidable | manual | SN | 237 | 1.3875 | -0.71 | 0 | |
--.GRI.Z. | 1991-04-21T16:18:27.52 | 10.0 | undecidable | manual | SN! | 359 | 1.0101 | 2.41 | 0 | |
--.AU9.Z. | 1991-04-21T16:18:26.35 | 10.0 | undecidable | manual | SN | 240 | 1.0989 | -0.66 | 0 | |
--.DR2.Z. | 1991-04-21T16:18:21.60 | 10.0 | undecidable | manual | SN | 335 | 0.9213 | -1.33 | 0.1 | |
--.MNO.Z. | 1991-04-21T16:18:17.87 | 10.0 | undecidable | manual | PN | 275 | 1.3764 | 1.07 | 1.1 | |
--.SC9.Z. | 1991-04-21T16:18:17.75 | 10.0 | undecidable | manual | SN | 309 | 0.7215 | -0.29 | 0.4 | |
--.PZI.Z. | 1991-04-21T16:18:16.91 | 10.0 | positive | manual | PN | 237 | 1.3875 | -0.12 | 1.4 | |
--.CZI.Z. | 1991-04-21T16:18:16.45 | 10.0 | undecidable | manual | PN | 350 | 1.4319 | -1.2 | 0.4 | |
--.MO9.Z. | 1991-04-21T16:18:16.10 | 10.0 | undecidable | manual | SN | 289 | 0.6105 | 0.68 | 0.7 | |
--.GMB.Z. | 1991-04-21T16:18:14.86 | 10.0 | undecidable | manual | SN | 307 | 0.5883 | -0.21 | 0.6 | |
--.AU9.Z. | 1991-04-21T16:18:12.32 | 10.0 | undecidable | manual | PN | 240 | 1.0989 | -0.73 | 0.5 | |
--.GRI.Z. | 1991-04-21T16:18:12.58 | 10.0 | undecidable | manual | PN | 359 | 1.0101 | 0.63 | 1.2 | |
--.DR2.Z. | 1991-04-21T16:18:10.41 | 10.0 | undecidable | manual | PN | 335 | 0.9213 | -0.29 | 1 | |
--.ATN.Z. | 1991-04-21T16:18:09.74 | 10.0 | undecidable | manual | PN | 295 | 0.8325 | 0.25 | 1.4 | |
--.SC9.Z. | 1991-04-21T16:18:07.43 | 10.0 | undecidable | manual | PN | 309 | 0.7215 | -0.45 | 1.3 | |
--.MO9.Z. | 1991-04-21T16:18:06.39 | 10.0 | undecidable | manual | PN | 289 | 0.6105 | 0.03 | 1.6 | |
--.RI2.Z. | 1991-04-21T16:18:06.86 | 10.0 | undecidable | manual | PN | 3 | 0.6216 | 0.42 | 1.7 | |
--.GMB.Z. | 1991-04-21T16:18:05.84 | 10.0 | undecidable | manual | PN | 307 | 0.5883 | -0.32 | 1.6 | |
--.GA2.Z. | 1991-04-21T16:18:05.75 | 10.0 | undecidable | manual | PN | 307 | 0.5883 | -0.41 | 3.1 | |
--.FE2.Z. | 1991-04-21T16:18:02.85 | 10.0 | undecidable | manual | PG | 311 | 0.3552 | 0.09 | 1.6 |