Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 06-02-2023 and time 05:31:32 (Italy) in region 2 km W Biancavilla (CT)

A magnitude ML 2.1 earthquake occured in region: 2 km W Biancavilla (CT), on

  • 06-02-2023 04:31:32 (UTC)
  • 06-02-2023 05:31:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6350, 14.8470 at 4 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
Biancavilla CT 2 24007 24007
Adrano CT 3 36122 60129
Santa Maria di Licodia CT 4 7641 67770
Paternò CT 8 48228 115998
Ragalna CT 8 3924 119922
Centuripe EN 9 5470 125392
Belpasso CT 12 28108 153500
Catenanuova EN 16 4866 158366
Camporotondo Etneo CT 16 5023 163389
Nicolosi CT 16 7463 170852
San Pietro Clarenza CT 17 7743 178595
Bronte CT 17 19172 197767
Motta Sant'Anastasia CT 17 12116 209883
Regalbuto EN 18 7277 217160
Pedara CT 19 14102 231262
Misterbianco CT 19 49410 280672
Mascalucia CT 19 31958 312630

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Catania (314555 inhabitants)
28 Km W of Acireale (52622 inhabitants)
71 Km E of Caltanissetta (63360 inhabitants)
75 Km NW of Siracusa (122291 inhabitants)
80 Km N of Ragusa (73313 inhabitants)
81 Km NE of Vittoria (63339 inhabitants)
82 Km NE of Gela (75827 inhabitants)
87 Km N of Modica (54633 inhabitants)
88 Km SW of Reggio di Calabria (183035 inhabitants)
88 Km SW of Messina (238439 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 2.1 2023-02-06
04:31:32		 37.6348 14.8472 4 2024-03-01
17:17:55		 Bollettino Sismico Italiano INGV 114493241
Reviewed
Rev200 		ML 1.6 2023-02-06
04:31:31		 37.645 14.882 3 2023-08-23
11:01:45		 Sala Operativa INGV_OE (Catania) 114125991
Reviewed
Rev200 		ML 1.8 2023-02-06
04:31:31		 37.644 14.882 3 2023-08-23
11:01:27		 Sala Operativa INGV_OE (Catania) 114125671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-06 04:31:32 ± 0.15
Latitude 37.6348 ± 0.0063
Longitude 14.8472 ± 0.0102
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114493241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 834
Semi-minor axis of confidence ellipse (meter) 404
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.45416
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 114493241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-02-16 17:30:07

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 114125991
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2023-02-06 04:45:16

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 114125671
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2023-02-06 04:41:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EPMN.HHN. 2023-02-06T04:31:45.24 0.3 undecidable manual S 54 35.5422 96 0.72 62
IV.HLNI.HHZ. 2023-02-06T04:31:43.68 0.6 undecidable manual S 176 31.8459 97 0.44 46
IV.LIBRI.HHN. 2023-02-06T04:31:42.34 0.1 undecidable manual P 8 50.3163 50 0.14 94
IV.EMSG.HHZ. 2023-02-06T04:31:41.10 0.6 undecidable manual S 24 22.5552 100 1.06 36
IV.AIO.HHE. 2023-02-06T04:31:41.64 0.1 undecidable manual P 42 50.4162 50 -0.57 85
IV.MUCR.HHE. 2023-02-06T04:31:41.63 0.1 undecidable manual P 3 45.3213 95 0.4 90
IV.GALF.HHZ. 2023-02-06T04:31:41.20 1.0 undecidable manual S 289 26.0517 99 -0.05 25
IV.EMSA.HHZ. 2023-02-06T04:31:39.37 0.6 undecidable manual S 150 17.4714 103 1.06 37
IV.EPMN.HHN. 2023-02-06T04:31:39.06 0.1 undecidable manual P 54 35.5422 96 -0.21 95
IV.HCRL.HHN. 2023-02-06T04:31:39.93 0.3 undecidable manual P 157 42.3243 95 -0.69 62
IV.GALF.HHZ. 2023-02-06T04:31:38.23 0.1 undecidable manual P 289 26.0517 99 0.84 79
IV.ECTS.HHZ. 2023-02-06T04:31:38.92 0.1 undecidable manual P 41 36.4413 96 -0.54 88
IV.EPOZ.HHZ. 2023-02-06T04:31:38.49 0.1 undecidable manual P 82 30.2475 97 0.27 95
IV.EFIU.HNN. 2023-02-06T04:31:38.67 0.3 undecidable manual P 62 36.2415 96 -0.74 61
IV.ENIC.HHZ. 2023-02-06T04:31:38.27 0.3 undecidable manual S 91 15.3735 104 0.67 65
IV.ECBD.HHN. 2023-02-06T04:31:38.05 0.1 undecidable manual P 52 26.4513 98 0.57 88
IV.ESAL.HHE. 2023-02-06T04:31:37.92 0.1 undecidable manual P 62 28.5492 98 0.04 100
IV.HLNI.HHZ. 2023-02-06T04:31:37.94 0.1 undecidable manual P 176 31.8459 97 -0.6 87
IV.EPIT.HHZ. 2023-02-06T04:31:37.89 0.1 undecidable manual P 43 26.8509 98 0.34 94
IV.EMFO.HHE. 2023-02-06T04:31:36.69 0.1 undecidable manual P 62 24.0537 99 -0.31 95
IV.EPZF.HHZ. 2023-02-06T04:31:36.51 0.1 undecidable manual P 2 20.9679 101 0.12 100
IV.EMSG.HHZ. 2023-02-06T04:31:36.93 0.6 negative manual P 24 22.5552 100 0.24 48
IV.EMSA.HHZ. 2023-02-06T04:31:36.42 0.1 undecidable manual P 150 17.4714 103 0.73 84
IV.EMPL.HHZ. 2023-02-06T04:31:36.87 0.3 undecidable manual S 66 11.877 108 0.42 71
IV.EMAS.HHZ. 2023-02-06T04:31:36.95 0.1 undecidable manual P 109 19.0698 102 0.94 77
IV.EMNR.HHZ. 2023-02-06T04:31:36.80 0.6 undecidable manual P 38 25.5522 99 -0.49 46
IV.ECHR.HHE. 2023-02-06T04:31:35.56 1.0 undecidable manual S 45 8.0808 116 0.32 24
IV.ESPC.HHN. 2023-02-06T04:31:35.26 0.1 undecidable manual P 68 17.0718 103 -0.36 95
IV.EMFS.HHE. 2023-02-06T04:31:35.65 0.3 undecidable manual P 55 16.2726 104 0.19 74
IV.ESVO.HHE. 2023-02-06T04:31:35.88 0.1 undecidable manual P 30 17.6712 103 0.14 100
IV.ENIC.HHZ. 2023-02-06T04:31:34.96 0.1 undecidable manual P 91 15.3735 104 -0.32 97
IV.EMPL.HHZ. 2023-02-06T04:31:34.00 0.1 undecidable manual P 66 11.877 108 -0.62 89
IV.ESLN.HHZ. 2023-02-06T04:31:34.18 0.1 undecidable manual P 60 12.9759 107 -0.64 88
IV.ESCV.HHN. 2023-02-06T04:31:34.56 0.1 undecidable manual P 347 12.7761 107 -0.23 99
IV.ESML.HNZ. 2023-02-06T04:31:33.77 0.3 undecidable manual S 123 3.3966 139 -0.14 77
IV.ECHR.HHE. 2023-02-06T04:31:33.17 0.1 undecidable manual P 45 8.0808 116 -0.75 85
IV.ESML.HNZ. 2023-02-06T04:31:32.56 0.1 undecidable manual P 123 3.3966 139 -0.59 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPIT.HHE. ML:2.0 0.0006464999999999999 0.96 AML other m 2023-02-06T04:31:44.03
IV.EMSG.HHN. ML:2.2 0.00108 0.54 AML other m 2023-02-06T04:31:44.40
IV.EPOZ.HNE. ML:2.0 0.0005885 0.48 AML other m 2023-02-06T04:31:46.58
IV.EPOZ.HHE. ML:2.0 0.000515 1.12 AML other m 2023-02-06T04:31:47.21
IV.EMSG.HHE. ML:2.0 0.000758 0.78 AML other m 2023-02-06T04:31:49.58
IV.EPOZ.HHN. ML:1.7 0.00025318380000000003 1.1616 AML other m 2023-02-06T04:31:45.52
IV.GALF.HHE. ML:2.2 0.0008960000000000001 0.42 AML other m 2023-02-06T04:31:49.33
IV.EPOZ.HNN. ML:2.0 0.0005145 0.58 AML other m 2023-02-06T04:31:49.39
IV.GALF.HHN. ML:2.2 0.0009855 0.44 AML other m 2023-02-06T04:31:50.35
IV.EPIT.HHN. ML:2.3 0.0011555 1.04 AML other m 2023-02-06T04:31:51.19
IV.ESML.HNE. ML:0.0 0.01943311 0.2528 AML other m 2023-02-06T04:31:34.04
IV.ESML.HNN. ML:0.0 0.015954675 0.16 AML other m 2023-02-06T04:31:33.89
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