A magnitude ML 2.2 earthquake occured in region: Costa Siracusana (Siracusa), on
and geographic coordinates (lat, lon) 36.3330, 15.1510 at 10 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 2.2 | 2021-05-18 16:55:00 |
36.3328 | 15.1512 | 10 | 2021-12-29 11:12:05 |
Bollettino Sismico Italiano INGV | 91276811 |
Reviewed Rev100 |
ML 2.3 | 2021-05-18 16:55:00 |
36.327 | 15.1642 | 10 | 2021-05-18 17:04:16 |
Sala Sismica INGV-Roma | 90236611 |
Field | Value |
---|---|
Time (UTC) | 2021-05-18 16:55:00 ± 0.24 |
Latitude | 36.3328 ± 0.0063 |
Longitude | 15.1512 ± 0.0123 |
Depth (km) | 10 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 91276811 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1129 |
Semi-minor axis of confidence ellipse (meter) | 649 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 252 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1130.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 311 |
Number of associated phases, regardless of their use for origin computation | 23 |
Number of defining phases | 23 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.21 |
Epicentral distance of station closest to the epicenter (degree) | 0.38671 |
Epicentral distance of station farthest from the epicenter (degree) | 1.08998 |
Number of stations at which the event was observed | 12 |
Number of stations from which data was used for origin computation | 12 |
Field | Value |
---|---|
Value | 2.3 |
Uncertainty | 0.2 |
Num. used stations | 17 |
Type of magnitude | ML |
Reference to an origin | 90236611 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-05-18 17:04:16 |
Field | Value |
---|---|
Value | 2.2 |
Uncertainty | 0.2 |
Num. used stations | 18 |
Type of magnitude | ML |
Reference to an origin | 91276811 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-08-02 14:22:21 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.HLNI.HHZ. | 2021-05-18T16:55:33.95 | 0.3 | undecidable | manual | S | 348 | 115.3956 | 50 | -0.17 | 75 |
IV.HCRL.HHZ. | 2021-05-18T16:55:31.84 | 0.1 | undecidable | manual | S | 354 | 105.9162 | 50 | 0.24 | 100 |
IV.HAGA.HHZ. | 2021-05-18T16:55:31.32 | 1.0 | undecidable | manual | S | 0 | 105.6165 | 50 | -0.2 | 25 |
IV.HVZN.HHZ. | 2021-05-18T16:55:30.79 | 0.3 | undecidable | manual | S | 338 | 101.4207 | 50 | 0.38 | 73 |
IV.HVIT.HHE. | 2021-05-18T16:55:28.07 | 0.6 | undecidable | manual | S | 323 | 92.1411 | 50 | 0.14 | 52 |
IV.SSY.HHZ. | 2021-05-18T16:55:28.01 | 0.3 | undecidable | manual | S | 356 | 91.7415 | 50 | 0.19 | 78 |
IV.HSRS.HNN. | 2021-05-18T16:55:25.91 | 0.3 | undecidable | manual | S | 4 | 84.5487 | 50 | 0.02 | 82 |
IV.CROCE.HHE. | 2021-05-18T16:55:24.23 | 0.3 | undecidable | manual | S | 315 | 78.0663 | 50 | 0.07 | 82 |
IV.HMDC.HHZ. | 2021-05-18T16:55:23.52 | 0.6 | undecidable | manual | S | 335 | 76.7676 | 50 | -0.31 | 52 |
IV.RAFF.HHZ. | 2021-05-18T16:55:21.46 | 0.6 | undecidable | manual | P | 325 | 120.99 | 50 | 0.64 | 43 |
IV.HAVL.HHZ. | 2021-05-18T16:55:21.52 | 0.6 | undecidable | manual | S | 358 | 69.5748 | 50 | -0.38 | 52 |
IV.HLNI.HHZ. | 2021-05-18T16:55:19.66 | 0.3 | undecidable | manual | P | 348 | 115.3956 | 50 | -0.29 | 73 |
IV.HAGA.HHZ. | 2021-05-18T16:55:18.75 | 0.3 | undecidable | manual | P | 0 | 105.6165 | 50 | 0.3 | 74 |
IV.HCRL.HHZ. | 2021-05-18T16:55:18.59 | 0.3 | undecidable | manual | P | 354 | 105.9162 | 50 | 0.09 | 77 |
IV.HVZN.HHZ. | 2021-05-18T16:55:17.63 | 0.6 | undecidable | manual | P | 338 | 101.4207 | 50 | -0.18 | 51 |
IV.HVIT.HHE. | 2021-05-18T16:55:16.33 | 1.0 | undecidable | manual | P | 323 | 92.1411 | 50 | -0.05 | 27 |
IV.SSY.HHZ. | 2021-05-18T16:55:16.64 | 0.3 | undecidable | manual | P | 356 | 91.7415 | 50 | 0.33 | 76 |
IV.HSRS.HNN. | 2021-05-18T16:55:15.33 | 0.6 | undecidable | manual | P | 4 | 84.5487 | 50 | 0.13 | 53 |
IV.HPAC.HHZ. | 2021-05-18T16:55:14.31 | 0.6 | undecidable | manual | S | 346 | 42.9237 | 50 | -0.47 | 54 |
IV.HMDC.HHZ. | 2021-05-18T16:55:13.64 | 0.3 | undecidable | manual | P | 335 | 76.7676 | 50 | -0.36 | 77 |
IV.CROCE.HHE. | 2021-05-18T16:55:13.89 | 1.0 | undecidable | manual | P | 315 | 78.0663 | 50 | -0.31 | 26 |
IV.HAVL.HHZ. | 2021-05-18T16:55:12.75 | 0.3 | undecidable | manual | P | 358 | 69.5748 | 50 | -0.14 | 82 |
IV.HPAC.HHZ. | 2021-05-18T16:55:08.62 | 0.3 | undecidable | manual | P | 346 | 42.9237 | 50 | -0.16 | 86 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.HPAC.HHE. | ML:2.2 | 0.0004455 | 0.2 | AML | other | m | 2021-05-18T16:55:15.11 |
IV.HPAC.HHN. | ML:2.0 | 0.00030360425000000005 | 0.2816 | AML | other | m | 2021-05-18T16:55:17.48 |
IV.HMDC.HNE. | ML:2.1 | 0.00017292679999999998 | 0.2048 | AML | other | m | 2021-05-18T16:55:24.51 |
IV.HAVL.HHN. | ML:2.1 | 0.00020037825 | 0.1408 | AML | other | m | 2021-05-18T16:55:24.43 |
IV.HMDC.HHE. | ML:2.2 | 0.00020323540000000002 | 0.1536 | AML | other | m | 2021-05-18T16:55:24.51 |
IV.HAVL.HHE. | ML:2.1 | 0.00019642215000000002 | 0.192 | AML | other | m | 2021-05-18T16:55:24.67 |
IV.HMDC.HHN. | ML:2.3 | 0.000266 | 0.2 | AML | other | m | 2021-05-18T16:55:26.75 |
IV.SSY.HHE. | ML:2.5 | 0.00038626965 | 0.256 | AML | other | m | 2021-05-18T16:55:29.03 |
IV.SSY.HHN. | ML:2.8 | 0.0008454999999999999 | 0.16 | AML | other | m | 2021-05-18T16:55:30.88 |
IV.HCRL.HHE. | ML:2.3 | 0.00016885855 | 0.2048 | AML | other | m | 2021-05-18T16:55:33.02 |
IV.HCRL.HHN. | ML:2.2 | 0.00015894425 | 0.1536 | AML | other | m | 2021-05-18T16:55:33.47 |
IV.HVZN.HHN. | ML:2.3 | 0.0001847221 | 0.2176 | AML | other | m | 2021-05-18T16:55:33.84 |
IV.HLNI.HHE. | ML:2.4 | 0.0001865 | 1.14 | AML | other | m | 2021-05-18T16:55:34.35 |
IV.HLNI.HHN. | ML:2.2 | 0.00013751025 | 0.1152 | AML | other | m | 2021-05-18T16:55:35.81 |
IV.HVZN.HNE. | ML:2.1 | 0.00012671404999999998 | 0.5504 | AML | other | m | 2021-05-18T16:55:35.62 |
IV.HVZN.HHE. | ML:2.2 | 0.0001397999 | 0.4352 | AML | other | m | 2021-05-18T16:55:35.90 |
IV.RAFF.HHN. | ML:2.0 | 0.00008076624 | 0.512 | AML | other | m | 2021-05-18T16:55:38.11 |
IV.RAFF.HHE. | ML:2.3 | 0.000135 | 1.44 | AML | other | m | 2021-05-18T16:55:38.88 |