A magnitude ML 1.8 earthquake occured in region: 4 km E Troina (EN), on
and geographic coordinates (lat, lon) 37.7950, 14.6480 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.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Troina | EN | 4 | 9373 | 9373 |
San Teodoro | ME | 8 | 1403 | 10776 |
CesarĂ² | ME | 8 | 2439 | 13215 |
Cerami | EN | 13 | 2006 | 15221 |
Gagliano Castelferrato | EN | 14 | 3593 | 18814 |
Regalbuto | EN | 16 | 7277 | 26091 |
Maniace | CT | 16 | 3765 | 29856 |
Capizzi | ME | 16 | 3176 | 33032 |
Bronte | CT | 16 | 19172 | 52204 |
Agira | EN | 19 | 8345 | 60549 |
Maletto | CT | 20 | 3920 | 64469 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.8 | 2021-12-18 21:28:35 |
37.7953 | 14.648 | 30 | 2022-03-30 13:04:26 |
Bollettino Sismico Italiano INGV | 99321321 |
Reviewed Rev100 |
ML 2.0 | 2021-12-18 21:28:32 |
37.7675 | 14.6068 | 47 | 2021-12-18 21:40:17 |
Sala Sismica INGV-Roma | 98699181 |
Field | Value |
---|---|
Time (UTC) | 2021-12-18 21:28:35 ± 0.44 |
Latitude | 37.7953 ± 0.0144 |
Longitude | 14.6480 ± 0.0239 |
Depth (km) | 30 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 99321321 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 2108 |
Semi-minor axis of confidence ellipse (meter) | 622 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 292 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 2110.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 88 |
Number of associated phases, regardless of their use for origin computation | 27 |
Number of defining phases | 16 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.48 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.61604 |
Number of stations at which the event was observed | 19 |
Number of stations from which data was used for origin computation | 10 |
Field | Value |
---|---|
Value | 1.8 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 99321321 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-03-15 14:02:41 |
Field | Value |
---|---|
Value | 2.0 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 98699181 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-12-18 21:40:17 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
MN.TRI.HHZ. | 2021-12-18T21:30:27.61 | 3.0 | undecidable | manual | Pn | 4.25 | 0 | |||
IV.SGRT.HHZ. | 2021-12-18T21:30:21.07 | 3.0 | undecidable | manual | Sn | 1.91 | 0 | |||
IV.ICAI.EHZ. | 2021-12-18T21:30:01.03 | 3.0 | undecidable | manual | Sg | 10.05 | 0 | |||
HL.VLS.HHZ. | 2021-12-18T21:29:59.06 | 3.0 | negative | manual | Pg | 17.290001 | 0 | |||
IX.NSC3.EHZ.02 | 2021-12-18T21:29:55.55 | 3.0 | undecidable | manual | Sn | 0.55 | 0 | |||
IV.GRIS.EHZ. | 2021-12-18T21:29:41.87 | 3.0 | undecidable | manual | Sg | 7.23 | 0 | |||
IV.BSSO.HHZ. | 2021-12-18T21:29:38.26 | 3.0 | undecidable | manual | Pg | 12.01 | 0 | |||
IV.IFOR.HHZ. | 2021-12-18T21:29:15.21 | 3.0 | undecidable | manual | Pn | 0.16 | 0 | |||
IV.MTGR.HHZ. | 2021-12-18T21:29:14.24 | 3.0 | undecidable | manual | Sg | 6.62 | 0 | |||
IV.GRIS.EHZ. | 2021-12-18T21:29:09.18 | 3.0 | undecidable | manual | Pn | 3.16 | 0 | |||
IV.MTGR.HHZ. | 2021-12-18T21:28:50.53 | 3.0 | undecidable | manual | Pn | -0.31 | 0 | |||
IV.MCPD.HHE. | 2021-12-18T21:28:49.52 | 0.3 | undecidable | manual | S | 11 | 36.741 | 125 | 0.28 | 71 |
IV.MUCR.HHZ. | 2021-12-18T21:28:48.29 | 0.3 | undecidable | manual | S | 36 | 33.8439 | 127 | -0.33 | 70 |
IV.RAFF.HHZ. | 2021-12-18T21:28:47.83 | 0.3 | undecidable | manual | P | 202 | 68.376 | 109 | 0.08 | 69 |
IV.MSFR.HHZ. | 2021-12-18T21:28:47.47 | 0.3 | undecidable | manual | S | 349 | 26.9508 | 134 | 0.25 | 72 |
IV.EPZF.HHZ. | 2021-12-18T21:28:46.92 | 0.3 | undecidable | manual | S | 80 | 18.5703 | 145 | 1.14 | 55 |
IV.CSLB.HHZ. | 2021-12-18T21:28:45.93 | 0.6 | undecidable | manual | P | 287 | 54.0015 | 114 | 0.24 | 45 |
IV.GALF.HHZ. | 2021-12-18T21:28:44.75 | 0.6 | undecidable | manual | S | 217 | 11.7771 | 157 | -0.14 | 51 |
IV.EMPL.HHZ. | 2021-12-18T21:28:44.00 | 0.3 | undecidable | manual | P | 114 | 31.0467 | 130 | 1.34 | 48 |
IV.ESCV.HHZ. | 2021-12-18T21:28:44.37 | 0.6 | undecidable | manual | S | 110 | 15.5733 | 150 | -0.99 | 37 |
IV.ECTS.HHZ. | 2021-12-18T21:28:44.33 | 0.1 | undecidable | manual | P | 77 | 42.5241 | 120 | 0.21 | 95 |
IV.MCPD.HHE. | 2021-12-18T21:28:43.34 | 0.1 | undecidable | manual | P | 11 | 36.741 | 125 | -0.01 | 100 |
IV.MUCR.HHZ. | 2021-12-18T21:28:42.61 | 0.1 | undecidable | manual | P | 36 | 33.8439 | 127 | -0.39 | 93 |
IV.EPZF.HHZ. | 2021-12-18T21:28:41.51 | 0.3 | undecidable | manual | P | 80 | 18.5703 | 145 | 0.15 | 75 |
IV.MSFR.HHZ. | 2021-12-18T21:28:41.95 | 0.1 | undecidable | manual | P | 349 | 26.9508 | 134 | -0.23 | 98 |
IV.ESCV.HHZ. | 2021-12-18T21:28:40.55 | 0.6 | undecidable | manual | P | 110 | 15.5733 | 150 | -0.56 | 45 |
IV.GALF.HHZ. | 2021-12-18T21:28:40.17 | 0.1 | undecidable | manual | P | 217 | 11.7771 | 157 | -0.67 | 89 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.GALF.HHE. | ML:1.8 | 0.000264 | 0.5 | AML | other | m | 2021-12-18T21:28:46.63 |
IV.ESCV.HHN. | ML:1.9 | 0.0003775 | 1.1 | AML | other | m | 2021-12-18T21:28:47.77 |
IV.GALF.HHN. | ML:1.8 | 0.0003015 | 0.84 | AML | other | m | 2021-12-18T21:28:48.39 |
IV.ESCV.HHE. | ML:1.7 | 0.0002395 | 0.92 | AML | other | m | 2021-12-18T21:28:49.06 |