A magnitude ML 1.5 earthquake occured in region: Costa Siracusana (Siracusa), on
and geographic coordinates (lat, lon) 37.1630, 15.5650 at 25 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 1.5 | 2021-11-20 06:50:15 |
37.1633 | 15.565 | 25 | 2022-03-30 13:04:21 |
Bollettino Sismico Italiano INGV | 98373661 |
Reviewed Rev100 |
ML 1.5 | 2021-11-20 06:50:15 |
37.1842 | 15.582 | 10 | 2021-11-20 06:57:23 |
Sala Sismica INGV-Roma | 97618921 |
Field | Value |
---|---|
Time (UTC) | 2021-11-20 06:50:15 ± 0.11 |
Latitude | 37.1633 ± 0.0081 |
Longitude | 15.5650 ± 0.0068 |
Depth (km) | 25 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 98373661 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 976 |
Semi-minor axis of confidence ellipse (meter) | 362 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 337 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 980.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 321 |
Number of associated phases, regardless of their use for origin computation | 12 |
Number of defining phases | 12 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.1 |
Epicentral distance of station closest to the epicenter (degree) | 0.28239 |
Epicentral distance of station farthest from the epicenter (degree) | 0.84896 |
Number of stations at which the event was observed | 6 |
Number of stations from which data was used for origin computation | 6 |
Field | Value |
---|---|
Value | 1.5 |
Uncertainty | 0.3 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 98373661 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-03-24 16:42:01 |
Field | Value |
---|---|
Value | 1.5 |
Uncertainty | 0.1 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 97618921 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-11-20 06:57:23 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.HVIT.HHZ. | 2021-11-20T06:50:43.14 | 0.6 | undecidable | manual | S | 259 | 94.239 | 100 | -0.03 | 44 |
IV.HMDC.HNN. | 2021-11-20T06:50:37.52 | 0.6 | undecidable | manual | S | 252 | 72.8715 | 103 | -0.04 | 46 |
IV.HLNI.HHZ. | 2021-11-20T06:50:35.40 | 0.3 | undecidable | manual | S | 289 | 64.5909 | 105 | -0.01 | 71 |
IV.HVIT.HHZ. | 2021-11-20T06:50:31.48 | 0.6 | undecidable | manual | P | 259 | 94.239 | 100 | 0.12 | 44 |
IV.SSY.HHZ. | 2021-11-20T06:50:30.36 | 0.6 | undecidable | manual | S | 269 | 43.4232 | 113 | 0.28 | 46 |
IV.HAGA.HHZ. | 2021-11-20T06:50:28.78 | 0.6 | undecidable | manual | S | 291 | 38.628 | 117 | -0.15 | 48 |
IV.HSRS.HHZ. | 2021-11-20T06:50:27.16 | 0.3 | undecidable | manual | S | 256 | 31.3464 | 123 | -0.07 | 74 |
IV.HMDC.HNN. | 2021-11-20T06:50:27.96 | 0.3 | undecidable | manual | P | 252 | 72.8715 | 103 | -0.16 | 67 |
IV.HLNI.HHZ. | 2021-11-20T06:50:26.83 | 0.1 | undecidable | manual | P | 289 | 64.5909 | 105 | -0.05 | 93 |
IV.HAGA.HHZ. | 2021-11-20T06:50:23.20 | 0.1 | undecidable | manual | P | 291 | 38.628 | 117 | 0.06 | 98 |
IV.SSY.HHZ. | 2021-11-20T06:50:23.89 | 0.1 | undecidable | manual | P | 269 | 43.4232 | 113 | 0.09 | 97 |
IV.HSRS.HHZ. | 2021-11-20T06:50:22.16 | 0.1 | positive | manual | P | 256 | 31.3464 | 123 | 0 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.HAGA.HHN. | ML:1.3 | 0.000056081615 | 0.0608 | AML | other | m | 2021-11-20T06:50:29.47 |
IV.HAGA.HHE. | ML:1.1 | 0.000039529565 | 0.0608 | AML | other | m | 2021-11-20T06:50:29.54 |
IV.SSY.HHE. | ML:1.6 | 0.00011106231 | 0.08 | AML | other | m | 2021-11-20T06:50:31.34 |
IV.HSRS.HHE. | ML:1.3 | 0.00006749896 | 2.5792 | AML | other | m | 2021-11-20T06:50:32.52 |
IV.HSRS.HNN. | ML:1.7 | 0.00018330170000000002 | 1.1392 | AML | other | m | 2021-11-20T06:50:34.52 |
IV.HLNI.HHE. | ML:1.6 | 0.0000655 | 1.18 | AML | other | m | 2021-11-20T06:50:35.08 |
IV.HLNI.HHN. | ML:1.4 | 0.000043450000000000006 | 1 | AML | other | m | 2021-11-20T06:50:35.26 |
IV.SSY.HHN. | ML:1.9 | 0.00021829129999999998 | 0.2176 | AML | other | m | 2021-11-20T06:50:35.79 |