Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 06-12-2020 and time 23:42:43 (Italy) in region 6 km E Bronte (CT)

A magnitude ML 2.2 earthquake occured in region: 6 km E Bronte (CT), on

  • 06-12-2020 22:42:43 (UTC)
  • 06-12-2020 23:42:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7690, 14.8940 at 28 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
Bronte CT 6 19172 19172
Maletto CT 7 3920 23092
Maniace CT 13 3765 26857
Randazzo CT 13 10900 37757
Adrano CT 13 36122 73879
Biancavilla CT 14 24007 97886
Ragalna CT 16 3924 101810
Santa Maria di Licodia CT 17 7641 109451
Santa Domenica Vittoria ME 17 980 110431
Cesarò ME 18 2439 112870
San Teodoro ME 19 1403 114273

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Acireale (52622 inhabitants)
34 Km NW of Catania (314555 inhabitants)
75 Km SW of Messina (238439 inhabitants)
76 Km SW of Reggio di Calabria (183035 inhabitants)
79 Km E of Caltanissetta (63360 inhabitants)
86 Km NW of Siracusa (122291 inhabitants)
95 Km N of Ragusa (73313 inhabitants)
96 Km NE of Vittoria (63339 inhabitants)
97 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 2020-12-06
22:42:43		 37.7693 14.8943 28 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87307491
Reviewed
Rev200 		ML 2.2 2020-12-06
22:42:41		 37.732 14.903 30 2021-02-19
23:12:29		 Sala Operativa INGV_OE (Catania) 85254121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-06 22:42:43 ± 0.19
Latitude 37.7693 ± 0.0063
Longitude 14.8943 ± 0.0125
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87307491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 987
Semi-minor axis of confidence ellipse (meter) 657
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 990.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.82917
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 85254121
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-12-06 23:03:23

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 87307491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-19 23:11:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2020-12-06T22:43:10.76 0.6 undecidable manual S 167 92.0412 102 0.07 44
IV.SSY.HHZ. 2020-12-06T22:43:05.24 0.6 undecidable manual S 167 69.6747 106 0.34 43
IV.HLNI.HHZ. 2020-12-06T22:42:59.02 0.6 undecidable manual S 182 46.7199 115 -0.13 48
IV.HAVL.HHZ. 2020-12-06T22:42:58.80 0.3 undecidable manual P 167 92.0412 102 -0.27 64
IV.SSY.HHZ. 2020-12-06T22:42:55.62 0.3 undecidable manual P 167 69.6747 106 -0.1 69
IV.MUCR.HHZ. 2020-12-06T22:42:54.85 0.6 undecidable manual S 357 30.4473 128 -0.57 44
IV.ECBD.HHN. 2020-12-06T22:42:53.46 0.6 undecidable manual S 86 16.872 146 0.54 46
IV.EPIT.HHN. 2020-12-06T22:42:53.13 0.6 undecidable manual S 72 14.9739 149 0.49 47
IV.ESML.HHZ. 2020-12-06T22:42:52.78 0.6 undecidable manual S 184 16.872 146 -0.13 51
IV.EPZF.HHZ. 2020-12-06T22:42:52.01 0.6 undecidable manual S 332 6.8931 165 0.22 50
IV.HLNI.HHZ. 2020-12-06T22:42:52.22 0.3 undecidable manual P 182 46.7199 115 -0.19 71
IV.EMSG.HHZ. 2020-12-06T22:42:51.44 0.6 undecidable manual S 40 7.4814 163 -0.4 48
IV.MSFR.HHZ. 2020-12-06T22:42:51.89 0.3 undecidable manual P 318 39.5271 120 0.47 67
IV.MUCR.HHZ. 2020-12-06T22:42:50.24 0.1 undecidable manual P 357 30.4473 128 -0.01 100
IV.GALF.HHZ. 2020-12-06T22:42:50.84 0.3 undecidable manual P 257 29.4483 129 0.7 62
IV.EVRN.HHZ. 2020-12-06T22:42:49.07 0.3 undecidable manual P 113 22.9548 137 -0.33 71
IV.ECBD.HHN. 2020-12-06T22:42:49.03 0.1 undecidable manual P 86 16.872 146 0.22 98
IV.ENIC.HHZ. 2020-12-06T22:42:49.44 0.6 undecidable manual P 144 18.9699 142 0.44 47
IV.ECHR.HHE. 2020-12-06T22:42:48.08 0.3 undecidable manual P 170 9.3795 160 -0.19 75
IV.EMCN.HHZ. 2020-12-06T22:42:48.60 0.3 undecidable manual P 79 12.4764 154 0.14 76
IV.ESLN.HHZ. 2020-12-06T22:42:48.27 0.3 undecidable manual P 140 10.9779 156 -0.09 77
IV.ESML.HHZ. 2020-12-06T22:42:48.74 0.6 undecidable manual P 184 16.872 146 -0.06 51
IV.EPIT.HHN. 2020-12-06T22:42:48.72 0.3 undecidable manual P 72 14.9739 149 0.07 76
IV.EPZF.HHZ. 2020-12-06T22:42:47.79 0.1 positive manual P 332 6.8931 165 -0.37 97
IV.EMSG.HHZ. 2020-12-06T22:42:47.94 0.1 positive manual P 40 7.4814 163 -0.24 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:2.5 0.0016218315 0.3968 AML other m 2020-12-06T22:42:52.36
IV.EMCN.HHN. ML:2.4 0.0012922115 0.5376 AML other m 2020-12-06T22:42:53.57
IV.EMCN.HNE. ML:2.6 0.001859823 0.4224 AML other m 2020-12-06T22:42:53.20
IV.EMCN.HHE. ML:2.6 0.0017992799999999999 0.4352 AML other m 2020-12-06T22:42:53.20
IV.EPZF.HHN. ML:2.4 0.0013700000000000001 0.26 AML other m 2020-12-06T22:42:53.66
IV.EMCN.HNN. ML:2.4 0.0012821725000000002 0.5248 AML other m 2020-12-06T22:42:53.57
IV.EMSG.HHN. ML:2.3 0.0010259745 0.3584 AML other m 2020-12-06T22:42:54.75
IV.EVRN.HHE. ML:2.0 0.0004298 0.576 AML other m 2020-12-06T22:43:01.88
IV.EMSG.HHE. ML:2.4 0.001376317 0.2304 AML other m 2020-12-06T22:42:56.15
IV.ESML.HHN. ML:2.0 0.00041254694999999996 0.6016 AML other m 2020-12-06T22:42:57.27
IV.GALF.HHN. ML:2.3 0.0007905 1.64 AML other m 2020-12-06T22:42:58.84
IV.GALF.HHE. ML:2.3 0.0007195 0.58 AML other m 2020-12-06T22:42:58.51
IV.ESML.HHE. ML:2.0 0.0005415 0.26 AML other m 2020-12-06T22:42:59.16
IV.HLNI.HHN. ML:2.0 0.00025229305 0.2432 AML other m 2020-12-06T22:42:59.97
IV.HLNI.HHE. ML:2.0 0.0002281518 0.128 AML other m 2020-12-06T22:43:00.43
IV.EVRN.HHN. ML:2.1 0.000483072 0.1792 AML other m 2020-12-06T22:42:59.69
IV.SSY.HHE. ML:2.4 0.00043419685 0.1408 AML other m 2020-12-06T22:43:07.97
IV.SSY.HHN. ML:2.9 0.0011899999999999999 0.14 AML other m 2020-12-06T22:43:07.29
IV.ESLN.HHN. ML:2.1 0.000634592 0.384 AML other m 2020-12-06T22:42:52.85
IV.ESLN.HHE. ML:2.1 0.0007288923000000001 0.384 AML other m 2020-12-06T22:42:53.06
IV.EVRN.HNE. ML:2.0 0.00040482355000000004 0.2688 AML other m 2020-12-06T22:43:01.88
IV.EVRN.HNN. ML:2.0 0.000427471 0.2688 AML other m 2020-12-06T22:42:56.27
IV.ENIC.HHE. ML:2.0 0.0005199306 0.1664 AML other m 2020-12-06T22:42:56.17
IV.ENIC.HHN. ML:2.0 0.0005446721 0.1408 AML other m 2020-12-06T22:42:59.62
IV.MUCR.HHE. ML:1.6 0.00014568816 0.2816 AML other m 2020-12-06T22:42:57.20
IV.MUCR.HHN. ML:1.7 0.00015851845 0.4992 AML other m 2020-12-06T22:42:56.03
IV.GALF.HNN. ML:1.6 0.0001399392 0.7424 AML other m 2020-12-06T22:42:59.39
IV.GALF.HNE. ML:1.6 0.00014628965 0.64 AML other m 2020-12-06T22:43:00.32
IV.HAVL.HHE. ML:2.3 0.00023215045 0.1792 AML other m 2020-12-06T22:43:15.97
IV.HAVL.HHN. ML:2.5 0.000315174945 0.192 AML other m 2020-12-06T22:43:13.35
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
Waveforms Seismic signals in miniseed + resp format Download