A magnitude ML 1.2 (quarry blast) earthquake occured in region: 8 km W Augusta (SR), on
and geographic coordinates (lat, lon) 37.2590, 15.1410 at 0 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
Event type: quarry blast.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.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Augusta | SR | 8 | 36305 | 36305 |
Melilli | SR | 9 | 13621 | 49926 |
Carlentini | SR | 11 | 17798 | 67724 |
Priolo Gargallo | SR | 12 | 12091 | 79815 |
Lentini | SR | 13 | 24085 | 103900 |
Sortino | SR | 14 | 8690 | 112590 |
Solarino | SR | 18 | 8091 | 120681 |
Floridia | SR | 20 | 22762 | 143443 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.2 | 2021-09-28 10:53:38 |
37.2587 | 15.1413 | 1 | 2022-03-30 13:04:09 |
Bollettino Sismico Italiano INGV | 96258811 |
Reviewed Rev100 |
ML 1.4 | 2021-09-28 10:53:37 |
37.2538 | 15.194 | 7 | 2021-09-28 11:12:32 |
Sala Sismica INGV-Roma | 95987731 |
Field | Value |
---|---|
Time (UTC) | 2021-09-28 10:53:38 ± 0.06 |
Latitude | 37.2587 ± 0.0027 |
Longitude | 15.1413 ± 0.0045 |
Depth (km) | 1 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | quarry blast |
Origin ID | 96258811 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 440 |
Semi-minor axis of confidence ellipse (meter) | 270 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 306 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 440.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 185 |
Number of associated phases, regardless of their use for origin computation | 4 |
Number of defining phases | 4 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.07 |
Epicentral distance of station closest to the epicenter (degree) | 0.02878 |
Epicentral distance of station farthest from the epicenter (degree) | 0.23203 |
Number of stations at which the event was observed | 4 |
Number of stations from which data was used for origin computation | 4 |
Field | Value |
---|---|
Value | 1.4 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 95987731 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-09-28 11:12:32 |
Field | Value |
---|---|
Value | 1.2 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 96258811 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-03-08 14:07:59 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.HLNI.HHZ. | 2021-09-28T10:53:43.75 | 0.6 | undecidable | manual | P | 293 | 25.752 | 91 | 0.09 | 47 |
IV.SSY.HHZ. | 2021-09-28T10:53:41.05 | 0.3 | undecidable | manual | P | 208 | 12.6762 | 92 | 0.01 | 74 |
IV.HCRL.HHZ. | 2021-09-28T10:53:40.46 | 0.1 | undecidable | manual | P | 286 | 9.9789 | 93 | -0.04 | 98 |
IV.HAGA.HHZ. | 2021-09-28T10:53:39.14 | 0.1 | undecidable | manual | P | 23 | 3.1968 | 99 | 0 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SSY.HHE. | ML:1.0 | 0.00016230485 | 1.456 | AML | other | m | 2021-09-28T10:53:44.03 |
IV.HCRL.HHN. | ML:1.1 | 0.0002475 | 0.76 | AML | other | m | 2021-09-28T10:53:44.66 |
IV.SSY.HHN. | ML:1.4 | 0.000386785 | 0.3968 | AML | other | m | 2021-09-28T10:53:44.60 |
IV.HCRL.HHE. | ML:1.0 | 0.00020850000000000003 | 0.48 | AML | other | m | 2021-09-28T10:53:44.90 |