A magnitude ML 1.8 earthquake occured in region: Costa Siracusana (Siracusa), on
and geographic coordinates (lat, lon) 37.0550, 15.4630 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.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Siracusa | SR | 15 | 122291 | 122291 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.8 | 2021-02-04 00:35:42 |
37.0548 | 15.4633 | 10 | 2021-07-12 16:55:00 |
Bollettino Sismico Italiano INGV | 87704121 |
Reviewed Rev100 |
ML 1.8 | 2021-02-04 00:35:41 |
37.0545 | 15.4783 | 9 | 2021-02-04 00:42:10 |
Sala Sismica INGV-Roma | 86821071 |
Field | Value |
---|---|
Time (UTC) | 2021-02-04 00:35:42 ± 0.19 |
Latitude | 37.0548 ± 0.0063 |
Longitude | 15.4633 ± 0.0113 |
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 | 87704121 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 980 |
Semi-minor axis of confidence ellipse (meter) | 99 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 102 |
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) | 223 |
Number of associated phases, regardless of their use for origin computation | 28 |
Number of defining phases | 28 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.24 |
Epicentral distance of station closest to the epicenter (degree) | 0.19605 |
Epicentral distance of station farthest from the epicenter (degree) | 1.20869 |
Number of stations at which the event was observed | 15 |
Number of stations from which data was used for origin computation | 15 |
Field | Value |
---|---|
Value | 1.8 |
Uncertainty | 0.4 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 87704121 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-03-22 11:04:20 |
Field | Value |
---|---|
Value | 1.8 |
Uncertainty | 0.3 |
Num. used stations | 14 |
Type of magnitude | ML |
Reference to an origin | 86821071 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-02-04 00:42:10 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.AIO.HHE. | 2021-02-04T00:36:13.28 | 0.6 | undecidable | manual | S | 349 | 103.6185 | 50 | 0.61 | 39 |
IV.ACATE.EHZ. | 2021-02-04T00:36:08.08 | 0.6 | undecidable | manual | S | 268 | 85.3479 | 50 | 0.3 | 43 |
IV.CROCE.HHZ. | 2021-02-04T00:36:07.61 | 0.6 | undecidable | manual | S | 254 | 85.9473 | 50 | -0.34 | 43 |
IV.MSRU.HHE. | 2021-02-04T00:36:05.17 | 0.6 | undecidable | manual | P | 2 | 134.1657 | 50 | 0.62 | 36 |
IV.HVZN.HHZ. | 2021-02-04T00:36:03.46 | 0.6 | undecidable | manual | S | 282 | 67.5768 | 50 | 0.42 | 43 |
IV.HMDC.HHZ. | 2021-02-04T00:36:01.19 | 0.6 | undecidable | manual | S | 260 | 61.1943 | 50 | -0.15 | 47 |
IV.HLNI.HHZ. | 2021-02-04T00:36:01.25 | 0.6 | undecidable | manual | S | 302 | 61.5939 | 50 | -0.19 | 46 |
IV.AIO.HHE. | 2021-02-04T00:36:00.43 | 1.0 | undecidable | manual | P | 349 | 103.6185 | 50 | 0.59 | 19 |
IV.HPAC.HHZ. | 2021-02-04T00:36:00.00 | 0.3 | undecidable | manual | S | 225 | 53.9016 | 50 | 0.6 | 63 |
IV.RAFF.HHZ. | 2021-02-04T00:35:59.33 | 0.1 | undecidable | manual | P | 281 | 99.123 | 50 | 0.19 | 86 |
IT.LNT.HGZ. | 2021-02-04T00:35:58.07 | 0.6 | undecidable | manual | S | 303 | 48.3183 | 50 | 0.17 | 48 |
IV.HCRL.HHZ. | 2021-02-04T00:35:57.36 | 0.6 | undecidable | manual | S | 304 | 45.7209 | 50 | 0.14 | 48 |
IV.ACATE.EHZ. | 2021-02-04T00:35:56.89 | 0.3 | undecidable | manual | P | 268 | 85.3479 | 50 | -0.13 | 67 |
IV.CROCE.HHZ. | 2021-02-04T00:35:56.63 | 0.1 | positive | manual | P | 254 | 85.9473 | 50 | -0.49 | 83 |
IV.SSY.HHZ. | 2021-02-04T00:35:54.71 | 0.6 | undecidable | manual | S | 288 | 36.3414 | 50 | 0.01 | 50 |
IV.HAGA.HHZ. | 2021-02-04T00:35:54.68 | 0.6 | undecidable | manual | S | 313 | 37.3293 | 50 | -0.3 | 47 |
IV.HVZN.HHZ. | 2021-02-04T00:35:54.29 | 0.1 | undecidable | manual | P | 282 | 67.5768 | 50 | 0.01 | 95 |
IV.HAVL.HHZ. | 2021-02-04T00:35:53.75 | 0.6 | undecidable | manual | S | 251 | 32.0457 | 50 | 0.19 | 49 |
IV.HLNI.HHZ. | 2021-02-04T00:35:52.92 | 0.1 | negative | manual | P | 302 | 61.5939 | 50 | -0.44 | 88 |
IV.HMDC.HHZ. | 2021-02-04T00:35:52.96 | 0.1 | undecidable | manual | P | 260 | 61.1943 | 50 | -0.34 | 90 |
IV.HPAC.HHZ. | 2021-02-04T00:35:52.26 | 0.1 | positive | manual | P | 225 | 53.9016 | 50 | 0.08 | 95 |
IT.LNT.HGZ. | 2021-02-04T00:35:51.23 | 0.3 | undecidable | manual | P | 303 | 48.3183 | 50 | -0.08 | 73 |
IV.HCRL.HHZ. | 2021-02-04T00:35:50.80 | 0.1 | negative | manual | P | 304 | 45.7209 | 50 | -0.12 | 97 |
IV.HSRS.HNZ. | 2021-02-04T00:35:50.84 | 0.6 | undecidable | manual | S | 281 | 21.7671 | 115 | 0.22 | 48 |
IV.HAGA.HHZ. | 2021-02-04T00:35:49.38 | 0.1 | negative | manual | P | 313 | 37.3293 | 50 | -0.24 | 96 |
IV.SSY.HHZ. | 2021-02-04T00:35:49.39 | 0.1 | negative | manual | P | 288 | 36.3414 | 50 | -0.07 | 99 |
IV.HAVL.HHZ. | 2021-02-04T00:35:48.85 | 0.1 | positive | manual | P | 251 | 32.0457 | 50 | 0.05 | 100 |
IV.HSRS.HNZ. | 2021-02-04T00:35:47.30 | 0.1 | negative | manual | P | 281 | 21.7671 | 115 | 0.19 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.HAVL.HHE. | ML:2.2 | 0.000772 | 0.08 | AML | other | m | 2021-02-04T00:35:54.09 |
IV.HAVL.HHN. | ML:2.5 | 0.001365 | 0.08 | AML | other | m | 2021-02-04T00:35:54.10 |
IV.SSY.HHN. | ML:2.7 | 0.0018460594999999999 | 0.2 | AML | other | m | 2021-02-04T00:35:54.91 |
IV.SSY.HHE. | ML:2.0 | 0.00043488425 | 0.32 | AML | other | m | 2021-02-04T00:35:55.18 |
IV.HCRL.HHN. | ML:1.5 | 0.000087340895 | 0.16 | AML | other | m | 2021-02-04T00:35:57.55 |
IV.HCRL.HHE. | ML:1.5 | 0.000098941505 | 0.22 | AML | other | m | 2021-02-04T00:35:57.67 |
IV.HMDC.HHN. | ML:1.8 | 0.00012834625 | 0.3 | AML | other | m | 2021-02-04T00:36:01.40 |
IV.HMDC.HNN. | ML:1.9 | 0.00016677217 | 0.43 | AML | other | m | 2021-02-04T00:36:01.48 |
IV.HMDC.HHE. | ML:1.7 | 0.00010200000000000001 | 0.74 | AML | other | m | 2021-02-04T00:36:01.32 |
IV.HLNI.HHN. | ML:1.4 | 0.00004252726 | 0.24 | AML | other | m | 2021-02-04T00:36:01.45 |
IV.CROCE.HHE. | ML:1.6 | 0.000043730384999999996 | 0.48 | AML | other | m | 2021-02-04T00:36:08.18 |
IV.CROCE.HHN. | ML:1.4 | 0.000031230685 | 0.28 | AML | other | m | 2021-02-04T00:36:08.38 |