Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 02-01-2021 and time 07:47:50 (Italy) in region 4 km NE Trecastagni (CT)

A magnitude ML 2.2 earthquake occured in region: 4 km NE Trecastagni (CT), on

  • 02-01-2021 06:47:50 (UTC)
  • 02-01-2021 07:47:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6520, 15.1030 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Trecastagni CT 4 10910 10910
Viagrande CT 5 8563 19473
Zafferana Etnea CT 5 9517 28990
Santa Venerina CT 5 8592 37582
Pedara CT 5 14102 51684
Aci Sant'Antonio CT 5 17984 69668
Aci Bonaccorsi CT 6 3524 73192
Aci Catena CT 6 29851 103043
Acireale CT 7 52622 155665
Nicolosi CT 8 7463 163128
Milo CT 8 1087 164215
San Giovanni la Punta CT 8 23060 187275
Valverde CT 8 7840 195115
Tremestieri Etneo CT 9 20589 215704
San Gregorio di Catania CT 10 11966 227670
Mascalucia CT 10 31958 259628
Sant'Agata li Battiati CT 11 9479 269107
Gravina di Catania CT 11 25838 294945
Sant'Alfio CT 11 1582 296527
San Pietro Clarenza CT 11 7743 304270
Aci Castello CT 11 18723 322993
Giarre CT 11 27659 350652
Camporotondo Etneo CT 13 5023 355675
Riposto CT 13 14838 370513
Belpasso CT 13 28108 398621
Mascali CT 14 14282 412903
Ragalna CT 15 3924 416827
Catania CT 17 314555 731382
Misterbianco CT 17 49410 780792
Fiumefreddo di Sicilia CT 18 9623 790415
Piedimonte Etneo CT 19 3963 794378
Santa Maria di Licodia CT 19 7641 802019
Motta Sant'Anastasia CT 19 12116 814135
Paternò CT 19 48228 862363

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km NW of Acireale (52622 inhabitants)
17 Km N of Catania (314555 inhabitants)
68 Km N of Siracusa (122291 inhabitants)
70 Km SW of Reggio di Calabria (183035 inhabitants)
72 Km SW of Messina (238439 inhabitants)
87 Km NE of Ragusa (73313 inhabitants)
93 Km NE of Vittoria (63339 inhabitants)
93 Km NE of Modica (54633 inhabitants)
93 Km E of Caltanissetta (63360 inhabitants)
100 Km NE of Gela (75827 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.2 2021-01-02
06:47:50		 37.6522 15.1032 9 2021-07-12
16:54:55		 Bollettino Sismico Italiano INGV 86025841
Reviewed
Rev200 		ML 1.5 2021-01-02
06:47:50		 37.668 15.079 3 2021-02-04
17:24:18		 Sala Operativa INGV_OE (Catania) 85958961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-02 06:47:50 ± 0.14
Latitude 37.6522 ± 0.0081
Longitude 15.1032 ± 0.0091
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 86025841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 791
Semi-minor axis of confidence ellipse (meter) 777
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 326
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.43078
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 86025841
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-04 17:24:03

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 85958961
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-02 07:02:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2021-01-02T06:48:03.98 0.6 undecidable manual S 174 41.0256 50 -0.2 46
IV.MUCR.HHE. 2021-01-02T06:47:59.51 0.3 undecidable manual P 335 47.8188 50 0.11 70
IV.AIO.HHE. 2021-01-02T06:47:58.14 0.3 undecidable manual P 18 37.1295 50 0.37 67
IV.ESML.HHZ. 2021-01-02T06:47:58.71 0.3 undecidable manual S 259 20.0688 115 0.67 63
IV.EPZF.HHZ. 2021-01-02T06:47:57.09 0.1 undecidable manual P 312 28.8489 108 0.64 84
IV.HAGA.HHZ. 2021-01-02T06:47:57.91 0.3 undecidable manual P 174 41.0256 50 -0.44 66
IV.ECPN.HHZ. 2021-01-02T06:47:56.20 0.6 undecidable manual S 315 14.4744 123 -0.14 49
IV.ECTS.HHZ. 2021-01-02T06:47:56.02 0.3 undecidable manual P 3 25.5522 110 0.19 72
IV.EMCN.HHE. 2021-01-02T06:47:56.23 0.6 undecidable manual S 338 16.5723 119 -0.75 41
IV.ESLN.HHZ. 2021-01-02T06:47:55.28 0.6 undecidable manual S 292 12.1767 127 -0.43 46
IV.EPOZ.HHN. 2021-01-02T06:47:55.88 0.6 undecidable manual S 74 7.7811 140 1.29 32
IV.ESML.HHZ. 2021-01-02T06:47:54.68 0.3 undecidable manual P 259 20.0688 115 -0.13 73
IV.EPIT.HHN. 2021-01-02T06:47:54.94 0.3 undecidable manual P 347 18.1707 117 0.47 68
IV.EMCN.HHE. 2021-01-02T06:47:54.04 0.3 undecidable manual P 338 16.5723 119 -0.16 73
IV.ENIC.HHE. 2021-01-02T06:47:54.90 0.3 undecidable manual S 252 7.4814 141 0.37 71
IV.ECHR.HHE. 2021-01-02T06:47:54.58 0.3 undecidable manual P 283 17.1717 118 0.29 71
IV.EVRN.HNZ. 2021-01-02T06:47:53.73 0.6 undecidable manual S 35 4.995 152 -0.31 48
IV.ECPN.HHZ. 2021-01-02T06:47:53.50 0.3 undecidable manual P 315 14.4744 123 -0.32 71
IV.ECBD.HHN. 2021-01-02T06:47:53.58 0.3 undecidable manual P 354 14.2746 123 -0.22 73
IV.EPOZ.HHN. 2021-01-02T06:47:52.93 0.1 undecidable manual P 74 7.7811 140 0.12 100
IV.ENIC.HHE. 2021-01-02T06:47:52.59 0.1 undecidable manual P 252 7.4814 141 -0.19 99
IV.ESLN.HHZ. 2021-01-02T06:47:52.96 0.1 undecidable manual P 292 12.1767 127 -0.5 92
IV.EVRN.HNZ. 2021-01-02T06:47:52.07 0.1 undecidable manual P 35 4.995 152 -0.43 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HHN. ML:2.4 0.00471 0.18 AML other m 2021-01-02T06:47:54.03
IV.EVRN.HNE. ML:2.2 0.00316 0.2 AML other m 2021-01-02T06:47:54.05
IV.EVRN.HHE. ML:2.2 0.002955 1.44 AML other m 2021-01-02T06:47:54.17
IV.ENIC.HHN. ML:2.2 0.002375 0.94 AML other m 2021-01-02T06:47:56.03
IV.EPOZ.HHE. ML:2.0 0.0016075000000000002 0.24 AML other m 2021-01-02T06:47:56.46
IV.ENIC.HHE. ML:2.3 0.0029050000000000005 0.42 AML other m 2021-01-02T06:47:56.48
IV.EVRN.HNN. ML:2.4 0.004355 0.54 AML other m 2021-01-02T06:47:56.84
IV.EPOZ.HHN. ML:2.3 0.00275 0.52 AML other m 2021-01-02T06:47:57.44
IV.ENIC.HNE. ML:2.3 0.0029249999999999996 0.48 AML other m 2021-01-02T06:47:59.45
IV.ENIC.HNN. ML:2.4 0.003455 1.6 AML other m 2021-01-02T06:47:59.13
IV.ESML.HHE. ML:1.7 0.000384 0.2 AML other m 2021-01-02T06:48:00.35
IV.ESML.HHN. ML:1.7 0.000376 0.68 AML other m 2021-01-02T06:48:00.33
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download