A magnitude ML 2.1 earthquake occured in region: Costa Siracusana (Siracusa), on
and geographic coordinates (lat, lon) 37.1870, 15.5600 at 9 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 2.1 | 2015-09-23 12:24:23 |
37.1867 | 15.5603 | 9 | 2016-02-19 13:21:47 |
Bollettino Sismico Italiano INGV | 22642661 |
Reviewed Rev100 |
ML 2.1 | 2015-09-23 12:24:23 |
37.1832 | 15.5565 | 9 | 2015-09-23 12:31:51 |
Sala Sismica INGV-Roma | 21545421 |
Field | Value |
---|---|
Time (UTC) | 2015-09-23 12:24:23 ± 0.15 |
Latitude | 37.1867 ± 0.0063 |
Longitude | 15.5603 ± 0.0068 |
Depth (km) | 9 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 22642661 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 639 |
Semi-minor axis of confidence ellipse (meter) | 537 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 334 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 640.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 196 |
Number of associated phases, regardless of their use for origin computation | 20 |
Number of defining phases | 20 |
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) | 0.27429 |
Epicentral distance of station farthest from the epicenter (degree) | 0.95418 |
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 | 2.1 |
Uncertainty | 0.2 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 21545421 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2015-09-23 12:31:50 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | 0.2 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 22642661 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2016-01-15 15:57:01 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.HMDC.HHZ. | 2015-09-23T12:24:46.25 | 0.6 | undecidable | manual | S | 250 | 73.2711 | 50 | 0.08 | 46 |
IV.HPAC.HHE. | 2015-09-23T12:24:46.04 | 0.6 | undecidable | manual | S | 221 | 70.4739 | 50 | 0.62 | 40 |
IV.MEU.SHE. | 2015-09-23T12:24:43.72 | 0.3 | undecidable | manual | S | 263 | 65.0904 | 50 | -0.27 | 67 |
IV.HLNI.HHZ. | 2015-09-23T12:24:43.44 | 0.3 | undecidable | manual | S | 287 | 63.3921 | 50 | -0.08 | 70 |
IV.RAFF.HHZ. | 2015-09-23T12:24:41.84 | 0.1 | undecidable | manual | P | 273 | 105.9162 | 50 | 0.16 | 85 |
IV.MCSR.HHZ. | 2015-09-23T12:24:41.38 | 0.1 | undecidable | manual | P | 344 | 101.6205 | 50 | 0.36 | 82 |
IV.MPAZ.HHZ. | 2015-09-23T12:24:39.76 | 0.3 | undecidable | manual | P | 25 | 93.6396 | 50 | -0.03 | 67 |
IV.HAVL.HHZ. | 2015-09-23T12:24:39.17 | 0.6 | undecidable | manual | S | 237 | 46.2204 | 50 | 0.21 | 47 |
IV.SSY.HHZ. | 2015-09-23T12:24:38.39 | 0.3 | undecidable | manual | S | 266 | 43.1235 | 50 | 0.27 | 70 |
IV.HVZN.HHE. | 2015-09-23T12:24:36.77 | 0.3 | undecidable | manual | P | 270 | 74.6697 | 50 | -0.09 | 69 |
IV.HMDC.HHZ. | 2015-09-23T12:24:36.35 | 0.1 | positive | manual | P | 250 | 73.2711 | 50 | -0.3 | 88 |
IV.HPAC.HHE. | 2015-09-23T12:24:36.15 | 0.3 | undecidable | manual | P | 221 | 70.4739 | 50 | -0.07 | 70 |
IV.HAGA.HHZ. | 2015-09-23T12:24:36.59 | 0.3 | undecidable | manual | S | 287 | 37.4292 | 50 | -0.01 | 75 |
IV.MEU.SHE. | 2015-09-23T12:24:35.04 | 0.3 | undecidable | manual | P | 263 | 65.0904 | 50 | -0.35 | 66 |
IV.HLNI.HHZ. | 2015-09-23T12:24:34.94 | 0.1 | positive | manual | P | 287 | 63.3921 | 50 | -0.18 | 92 |
IV.AGST.EHZ. | 2015-09-23T12:24:34.71 | 0.3 | undecidable | manual | S | 285 | 30.4473 | 106 | 0.08 | 75 |
IV.HAVL.HHZ. | 2015-09-23T12:24:32.46 | 0.1 | positive | manual | P | 237 | 46.2204 | 50 | -0.02 | 98 |
IV.SSY.HHZ. | 2015-09-23T12:24:31.93 | 0.1 | positive | manual | P | 266 | 43.1235 | 50 | -0.07 | 98 |
IV.HAGA.HHZ. | 2015-09-23T12:24:31.12 | 0.1 | undecidable | manual | P | 287 | 37.4292 | 50 | 0 | 100 |
IV.AGST.EHZ. | 2015-09-23T12:24:30.08 | 0.1 | undecidable | manual | P | 285 | 30.4473 | 106 | 0.09 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.AGST.EHN. | ML:2.2 | 0.0008274999999999999 | 0.6 | AML | other | m | 2015-09-23T12:24:35.13 |
IV.AGST.EHE. | ML:2.3 | 0.0010750000000000002 | 0.52 | AML | other | m | 2015-09-23T12:24:34.90 |
IV.HAGA.HHE. | ML:1.9 | 0.00027400000000000005 | 0.12 | AML | other | m | 2015-09-23T12:24:36.73 |
IV.HAGA.HHN. | ML:2.0 | 0.000386 | 0.4 | AML | other | m | 2015-09-23T12:24:36.73 |
IV.HAVL.HHN. | ML:2.0 | 0.000308 | 0.12 | AML | other | m | 2015-09-23T12:24:40.60 |
IV.HAVL.HHE. | ML:2.0 | 0.000262 | 0.26 | AML | other | m | 2015-09-23T12:24:41.57 |
IV.HLNI.HHE. | ML:2.4 | 0.000459 | 0.88 | AML | other | m | 2015-09-23T12:24:43.68 |
IV.HLNI.HHN. | ML:2.6 | 0.0007145 | 1.28 | AML | other | m | 2015-09-23T12:24:43.66 |
IV.HMDC.HHE. | ML:1.8 | 0.00010910000000000001 | 1.26 | AML | other | m | 2015-09-23T12:24:47.20 |
IV.HMDC.HHN. | ML:1.9 | 0.0001285 | 0.78 | AML | other | m | 2015-09-23T12:24:48.82 |
IV.MCSR.HHN. | ML:2.1 | 0.0001265 | 0.32 | AML | other | m | 2015-09-23T12:24:57.40 |
IV.MCSR.HHE. | ML:1.9 | 0.00007305 | 0.26 | AML | other | m | 2015-09-23T12:25:00.09 |
IV.RAFF.HHN. | ML:2.3 | 0.0001825 | 0.64 | AML | other | m | 2015-09-23T12:24:57.37 |
IV.RAFF.HHE. | ML:2.2 | 0.000156 | 0.22 | AML | other | m | 2015-09-23T12:24:57.02 |
IV.SSY.HHE. | ML:2.0 | 0.000356 | 0.2 | AML | other | m | 2015-09-23T12:24:38.83 |
IV.SSY.HHN. | ML:2.4 | 0.0008385 | 0.96 | AML | other | m | 2015-09-23T12:24:38.43 |