A magnitude ML 1.9 earthquake occured in region: Costa Siracusana (Siracusa), on
and geographic coordinates (lat, lon) 37.2220, 15.5970 at 30 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 1.9 | 2021-07-11 22:01:52 |
37.2218 | 15.5968 | 30 | 2021-12-29 11:12:13 |
Bollettino Sismico Italiano INGV | 93059861 |
Reviewed Rev100 |
ML 1.7 | 2021-07-11 22:01:52 |
37.1968 | 15.5798 | 28 | 2021-07-11 22:15:06 |
Sala Sismica INGV-Roma | 92637841 |
Field | Value |
---|---|
Time (UTC) | 2021-07-11 22:01:52 ± 0.14 |
Latitude | 37.2218 ± 0.0063 |
Longitude | 15.5968 ± 0.0079 |
Depth (km) | 30 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 93059861 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 646 |
Semi-minor axis of confidence ellipse (meter) | 537 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 316 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 650.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 208 |
Number of associated phases, regardless of their use for origin computation | 30 |
Number of defining phases | 19 |
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) | 1.06390 |
Number of stations at which the event was observed | 21 |
Number of stations from which data was used for origin computation | 11 |
Field | Value |
---|---|
Value | 1.7 |
Uncertainty | 0.3 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 92637841 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-07-11 22:15:06 |
Field | Value |
---|---|
Value | 1.9 |
Uncertainty | 0.2 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 93059861 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-10-31 19:59:56 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.VAGA.HHZ. | 2021-07-11T22:03:48.36 | 3.0 | undecidable | manual | Sn | 3.54 | 0 | |||
IV.ARVD.HHZ. | 2021-07-11T22:03:45.37 | 3.0 | negative | manual | Pg | 19.49 | 0 | |||
AC.VLO.HHZ. | 2021-07-11T22:03:42.37 | 3.0 | undecidable | manual | Sn | -3.18 | 0 | |||
IV.VCRE.HHZ. | 2021-07-11T22:03:30.73 | 3.0 | undecidable | manual | Sn | 0.9 | 0 | |||
IV.FOSV.EHZ. | 2021-07-11T22:03:28.97 | 3.0 | undecidable | manual | Pn | 5.06 | 0 | |||
IV.MNTP.HNZ. | 2021-07-11T22:03:24.34 | 3.0 | undecidable | manual | Pn | 4.84 | 0 | |||
IV.MF5.EHZ. | 2021-07-11T22:03:21.54 | 3.0 | undecidable | manual | Pn | 3.97 | 0 | |||
IV.CDRU.HHZ. | 2021-07-11T22:03:21.78 | 3.0 | undecidable | manual | Sn | 3.02 | 0 | |||
IV.ASSB.HHZ. | 2021-07-11T22:03:19.23 | 3.0 | positive | manual | Pn | -1.87 | 0 | |||
IV.MMGO.HHZ. | 2021-07-11T22:02:48.89 | 3.0 | undecidable | manual | Sn | -4.68 | 0 | |||
IV.CDRU.HHZ. | 2021-07-11T22:02:39.73 | 3.0 | undecidable | manual | Pn | -0.27 | 0 | |||
IV.HVZN.HNZ. | 2021-07-11T22:02:16.35 | 0.3 | undecidable | manual | S | 267 | 78.0663 | 106 | 0.22 | 68 |
IV.HMDC.HHZ. | 2021-07-11T22:02:15.64 | 0.3 | undecidable | manual | S | 248 | 77.6667 | 106 | -0.4 | 66 |
IV.HPAC.HHE. | 2021-07-11T22:02:15.16 | 0.6 | undecidable | manual | S | 221 | 75.5688 | 107 | -0.34 | 44 |
IV.HLNI.HHZ. | 2021-07-11T22:02:12.82 | 0.3 | undecidable | manual | S | 283 | 65.49 | 110 | -0.13 | 72 |
MN.CEL.HNZ. | 2021-07-11T22:02:11.35 | 0.6 | undecidable | manual | P | 13 | 118.0929 | 54 | -0.31 | 41 |
IV.HAVL.HHZ. | 2021-07-11T22:02:09.42 | 0.3 | undecidable | manual | S | 235 | 51.1155 | 116 | 0.02 | 75 |
IV.HCRL.HHZ. | 2021-07-11T22:02:09.57 | 0.3 | undecidable | manual | S | 278 | 50.3163 | 116 | 0.37 | 69 |
IV.NOV.HHZ. | 2021-07-11T22:02:08.96 | 0.3 | undecidable | manual | P | 336 | 98.124 | 103 | -0.01 | 69 |
IV.SSY.HHZ. | 2021-07-11T22:02:08.23 | 0.3 | undecidable | manual | S | 261 | 46.8198 | 118 | -0.14 | 74 |
IV.AIO.HHE. | 2021-07-11T22:02:07.60 | 0.3 | undecidable | manual | P | 339 | 89.0442 | 104 | -0.01 | 70 |
IV.HVZN.HNZ. | 2021-07-11T22:02:06.18 | 0.3 | undecidable | manual | P | 267 | 78.0663 | 106 | 0.2 | 69 |
IV.HAGA.HHZ. | 2021-07-11T22:02:06.43 | 0.3 | undecidable | manual | S | 280 | 39.627 | 123 | -0.29 | 73 |
IV.HPAC.HHE. | 2021-07-11T22:02:05.77 | 0.3 | undecidable | manual | P | 221 | 75.5688 | 107 | 0.17 | 70 |
IV.HMDC.HHZ. | 2021-07-11T22:02:05.68 | 0.3 | undecidable | manual | P | 248 | 77.6667 | 106 | -0.25 | 68 |
IV.HLNI.HHZ. | 2021-07-11T22:02:04.17 | 0.1 | undecidable | manual | P | 283 | 65.49 | 110 | 0.03 | 97 |
IV.HAVL.HHZ. | 2021-07-11T22:02:02.15 | 0.1 | positive | manual | P | 235 | 51.1155 | 116 | 0.06 | 100 |
IV.HCRL.HHZ. | 2021-07-11T22:02:02.28 | 0.3 | undecidable | manual | P | 278 | 50.3163 | 116 | 0.31 | 71 |
IV.SSY.HHZ. | 2021-07-11T22:02:01.61 | 0.3 | undecidable | manual | P | 261 | 46.8198 | 118 | 0.12 | 74 |
IV.HAGA.HHZ. | 2021-07-11T22:02:00.64 | 0.3 | undecidable | manual | P | 280 | 39.627 | 123 | 0.1 | 76 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SSY.HHE. | ML:2.0 | 0.00022250000000000001 | 0.42 | AML | other | m | 2021-07-11T22:02:01.49 |
IV.HAVL.HHE. | ML:1.9 | 0.00016399999999999997 | 0.08 | AML | other | m | 2021-07-11T22:02:09.68 |
IV.SSY.HHN. | ML:2.3 | 0.000477 | 0.76 | AML | other | m | 2021-07-11T22:02:10.09 |
IV.HAVL.HHN. | ML:1.9 | 0.000153 | 0.96 | AML | other | m | 2021-07-11T22:02:10.46 |
IV.HLNI.HHE. | ML:1.7 | 0.00008410000000000001 | 1.76 | AML | other | m | 2021-07-11T22:02:12.03 |
IV.HLNI.HHN. | ML:1.7 | 0.00007575000000000001 | 1.68 | AML | other | m | 2021-07-11T22:02:12.95 |
IV.ESCV.HHN. | ML:2.1 | 0.00013000000000000002 | 0.92 | AML | other | m | 2021-07-11T22:02:21.45 |
IV.ESCV.HHE. | ML:2.0 | 0.0000975 | 0.92 | AML | other | m | 2021-07-11T22:02:23.25 |