A magnitude ML 2.1 earthquake occured in region: Mar Ionio Settentrionale (MARE), on
and geographic coordinates (lat, lon) 37.7870, 16.7070 at 38 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 |
Md 2.1
ML 2.1 |
2011-05-04 01:41:12 |
37.787 | 16.707 | 38 | 2014-10-21 12:27:13 |
Bollettino Sismico Italiano INGV | 1206239 |
Field | Value |
---|---|
Time (UTC) | 2011-05-04 01:41:12 ± 0.7 |
Latitude | 37.7870 ± 0.0405 |
Longitude | 16.7070 ± 0.0410 |
Depth (km) | 38 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-SISPICK |
Event type | earthquake |
Origin ID | 1206239 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 4789 |
Semi-minor axis of confidence ellipse (meter) | 3105 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 332 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 5762.8 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 305 |
Number of associated phases, regardless of their use for origin computation | 10 |
Number of defining phases | 8 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.61 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.79590 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 4 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | 0.2 |
Num. used stations | |
Type of magnitude | ML |
Reference to an origin | 1206239 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-05 23:37:07 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | 0.1 |
Num. used stations | |
Type of magnitude | Md |
Reference to an origin | 1206239 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-05 23:37:07 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
MN.CEL.HHE. | 2011-05-04T01:41:37.79 | 0.6 | undecidable | manual | Sg | 307 | 88.3449 | -0.593 | 46 | |
IV.PLAC.HHZ. | 2011-05-04T01:41:36.80 | 0.6 | undecidable | manual | Sg | 342 | 77.1672 | 0.833 | 42 | |
IV.MPAZ.HHN. | 2011-05-04T01:41:33.59 | 0.3 | undecidable | manual | Sg | 287 | 63.9915 | 0.447 | 75 | |
IV.SOI.EHZ. | 2011-05-04T01:41:32.77 | 0.6 | undecidable | manual | Sg | 299 | 65.2902 | -0.656 | 47 | |
MN.CEL.HHE. | 2011-05-04T01:41:27.46 | 0.3 | undecidable | manual | Pg | 307 | 88.3449 | 0.217 | 75 | |
IV.PLAC.HHZ. | 2011-05-04T01:41:25.50 | 0.1 | undecidable | manual | Pg | 342 | 77.1672 | -0.348 | 100 | |
IV.MPAZ.HHN. | 2011-05-04T01:41:24.30 | 0.3 | undecidable | manual | Pg | 287 | 63.9915 | 0.082 | 81 | |
IV.SOI.EHZ. | 2011-05-04T01:41:24.39 | 0.3 | undecidable | manual | Pg | 299 | 65.2902 | 0.009 | 82 | |
IV.NRCA.HHE. | 2011-05-04T01:41:18.88 | 10.0 | undecidable | manual | Sg | 0 | 0 | 0 | ||
IV.NRCA.HHE. | 2011-05-04T01:41:15.47 | 10.0 | undecidable | manual | Pg | 0 | 0 | 0 |