A magnitude ML 2.4 earthquake occured in region: Costa Siracusana (Siracusa), on
and geographic coordinates (lat, lon) 37.1860, 15.5830 at 26 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 |
ML 2.4 | 2021-11-04 11:41:35 |
37.1858 | 15.583 | 26 | 2022-03-30 13:04:17 |
Bollettino Sismico Italiano INGV | 97744201 |
Reviewed Rev100 |
Md 2.3
ML 2.3 |
2021-11-04 11:41:35 |
37.1695 | 15.5977 | 6 | 2021-11-04 11:51:59 |
Sala Sismica INGV-Roma | 97254351 |
Field | Value |
---|---|
Time (UTC) | 2021-11-04 11:41:35 ± 0.24 |
Latitude | 37.1858 ± 0.0090 |
Longitude | 15.5830 ± 0.0169 |
Depth (km) | 26 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 97744201 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1242 |
Semi-minor axis of confidence ellipse (meter) | 1117 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 125 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1240.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 266 |
Number of associated phases, regardless of their use for origin computation | 21 |
Number of defining phases | 16 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.19 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.90832 |
Number of stations at which the event was observed | 13 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 2.4 |
Uncertainty | 0.2 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 97744201 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-01-12 16:39:44 |
Field | Value |
---|---|
Value | 2.3 |
Uncertainty | 0.2 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 97254351 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-11-04 11:51:59 |
Field | Value |
---|---|
Value | 2.3 |
Uncertainty | 0.6 |
Num. used stations | 3 |
Type of magnitude | Md |
Reference to an origin | 97254351 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-11-04 11:51:59 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MSAG.HHZ. | 2021-11-04T11:43:29.08 | 3.0 | undecidable | manual | Sn | -4.37 | 0 | |||
IV.ARVD.HHZ. | 2021-11-04T11:43:25.84 | 3.0 | negative | manual | Pg | 15.42 | 0 | |||
IV.MSAG.HHZ. | 2021-11-04T11:42:47.83 | 3.0 | undecidable | manual | Pg | 6.03 | 0 | |||
IV.SCHR.EHZ. | 2021-11-04T11:42:21.33 | 3.0 | positive | manual | Pn | 0.01 | 0 | |||
IV.TDS.HHZ. | 2021-11-04T11:42:20.75 | 3.0 | negative | manual | Pg | 6.15 | 0 | |||
IV.CROCE.HHE. | 2021-11-04T11:42:04.83 | 0.6 | undecidable | manual | S | 247 | 100.8213 | 100 | -0.26 | 43 |
IV.HVZN.HHZ. | 2021-11-04T11:41:59.01 | 1.0 | undecidable | manual | S | 270 | 76.6677 | 103 | 0.25 | 23 |
IV.HMDC.HHZ. | 2021-11-04T11:41:58.39 | 0.6 | undecidable | manual | S | 251 | 75.1692 | 103 | 0.03 | 47 |
IV.CROCE.HHE. | 2021-11-04T11:41:52.35 | 0.3 | undecidable | manual | P | 247 | 100.8213 | 100 | -0.18 | 65 |
IT.LNT.HGZ. | 2021-11-04T11:41:52.66 | 0.6 | undecidable | manual | S | 283 | 52.503 | 110 | 0.09 | 49 |
IV.AIO.HHE. | 2021-11-04T11:41:50.88 | 0.3 | undecidable | manual | P | 341 | 92.3409 | 100 | -0.38 | 64 |
IV.SSY.HHZ. | 2021-11-04T11:41:50.82 | 0.6 | undecidable | manual | S | 266 | 45.1215 | 113 | 0.09 | 49 |
IV.HVZN.HHZ. | 2021-11-04T11:41:49.09 | 0.3 | undecidable | manual | P | 270 | 76.6677 | 103 | 0.2 | 68 |
IV.HSRS.HHZ. | 2021-11-04T11:41:48.00 | 0.6 | undecidable | manual | S | 252 | 33.5442 | 122 | 0.02 | 51 |
IV.HMDC.HHZ. | 2021-11-04T11:41:48.67 | 0.1 | undecidable | manual | P | 251 | 75.1692 | 103 | 0.02 | 95 |
IV.HAGA.HHZ. | 2021-11-04T11:41:48.76 | 0.6 | undecidable | manual | S | 286 | 39.3273 | 117 | -0.57 | 45 |
IV.EPOZ.HHE. | 2021-11-04T11:41:47.36 | 0.1 | undecidable | manual | P | 327 | 64.1913 | 106 | 0.35 | 90 |
IT.LNT.HGZ. | 2021-11-04T11:41:45.27 | 0.3 | undecidable | manual | P | 283 | 52.503 | 110 | -0.04 | 74 |
IV.SSY.HHZ. | 2021-11-04T11:41:44.29 | 0.3 | undecidable | manual | P | 266 | 45.1215 | 113 | 0.04 | 75 |
IV.HAGA.HHZ. | 2021-11-04T11:41:43.35 | 0.1 | undecidable | manual | P | 286 | 39.3273 | 117 | -0.09 | 100 |
IV.HSRS.HHZ. | 2021-11-04T11:41:42.83 | 0.1 | undecidable | manual | P | 252 | 33.5442 | 122 | 0.17 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.HAGA.HHN. | ML:2.3 | 0.0006129999999999999 | 1.46 | AML | other | m | 2021-11-04T11:41:48.92 |
IV.HAGA.HHE. | ML:2.1 | 0.00032999999999999994 | 1.1 | AML | other | m | 2021-11-04T11:41:48.94 |
IV.SSY.HHE. | ML:2.6 | 0.0010165 | 0.18 | AML | other | m | 2021-11-04T11:41:51.45 |
IV.SSY.HHN. | ML:3.1 | 0.003105 | 0.62 | AML | other | m | 2021-11-04T11:41:51.52 |
IV.HVZN.HNN. | ML:2.4 | 0.000352 | 0.5 | AML | other | m | 2021-11-04T11:42:01.37 |
IV.HVZN.HHE. | ML:2.4 | 0.0003255 | 0.64 | AML | other | m | 2021-11-04T11:42:01.60 |
IV.HVZN.HNE. | ML:2.4 | 0.0003145 | 0.66 | AML | other | m | 2021-11-04T11:42:01.61 |
IV.HVZN.HHN. | ML:2.4 | 0.0003175 | 0.68 | AML | other | m | 2021-11-04T11:42:03.56 |