A magnitude M 4.0 earthquake occured in region: Mar Ionio Meridionale (MARE), on
and geographic coordinates (lat, lon) 37.7830, 20.3500 at 120 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.
No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
M 4.0 | 1986-07-22 23:40:57 |
37.783 | 20.35 | 121 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 31409 |
Field | Value |
---|---|
Time (UTC) | 1986-07-22 23:40:57 ± 0.616 |
Latitude | 37.7830 ± 0.0261 |
Longitude | 20.3500 ± 0.0224 |
Depth (km) | 121 ± 16 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 31409 |
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) | 3500.5 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 189 |
Number of associated phases, regardless of their use for origin computation | 15 |
Number of defining phases | 15 |
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) | 0.02396 |
Epicentral distance of station farthest from the epicenter (degree) | 0.09455 |
Number of stations at which the event was observed | 14 |
Number of stations from which data was used for origin computation | 14 |
Field | Value |
---|---|
Value | 4.0 |
Uncertainty | |
Num. used stations | |
Type of magnitude | M |
Reference to an origin | 31409 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2015-04-28 09:30:34 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.CTI.Z. | 1986-07-22T23:43:26.00 | 10.0 | undecidable | manual | P | 327 | 10.4895 | 0.43 | 0.7 | |
--.FO1.Z. | 1986-07-22T23:43:25.50 | 10.0 | undecidable | manual | P | 332 | 10.4451 | 0.5 | 0.3 | |
--.KBN.Z. | 1986-07-22T23:42:15.00 | 10.0 | undecidable | manual | S | 8 | 2.8527 | 0.41 | 0.3 | |
--.GIB.Z. | 1986-07-22T23:42:10.00 | 10.0 | undecidable | manual | P | 276 | 4.9728 | -0.32 | 1.1 | |
--.SGO.Z. | 1986-07-22T23:42:08.00 | 10.0 | undecidable | manual | P | 309 | 4.7841 | 0.31 | 1.1 | |
--.MG9.Z. | 1986-07-22T23:42:02.00 | 10.0 | undecidable | manual | P | 305 | 4.4067 | -0.47 | 0.8 | |
--.PHP.Z. | 1986-07-22T23:41:54.60 | 10.0 | undecidable | manual | P | 3 | 3.8961 | -1.06 | 0.1 | |
--.TS9.Z. | 1986-07-22T23:41:52.00 | 10.0 | undecidable | manual | P | 304 | 3.6408 | -0.23 | 1.2 | |
--.TIR.Z. | 1986-07-22T23:41:50.60 | 10.0 | undecidable | manual | P | 356 | 3.5742 | -0.8 | 0.5 | |
--.SO9.Z. | 1986-07-22T23:41:49.00 | 10.0 | negative | manual | P | 278 | 3.3855 | 0.09 | 2.9 | |
--.GR9.Z. | 1986-07-22T23:41:47.00 | 10.0 | undecidable | manual | P | 291 | 3.2301 | 0.14 | 1.4 | |
--.LCI.Z. | 1986-07-22T23:41:45.00 | 10.0 | undecidable | manual | P | 328 | 3.0858 | 0.2 | 1.3 | |
--.KBN.Z. | 1986-07-22T23:41:42.20 | 10.0 | undecidable | manual | P | 8 | 2.8527 | 0.4 | 0.8 | |
--.KZN.Z. | 1986-07-22T23:41:40.00 | 10.0 | undecidable | manual | P | 25 | 2.7528 | -0.41 | 1.2 | |
--.ATH.Z. | 1986-07-22T23:41:39.40 | 10.0 | undecidable | manual | P | 86 | 2.664 | 0.19 | 1.3 |