Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.8 on date 07-12-2020 and time 14:01:01 (UTC) in region 9 km E Bronte (CT)

A magnitude ML 2.8 earthquake occured in region: 9 km E Bronte (CT), on

  • 07-12-2020 14:01:01 (UTC)
  • 07-12-2020 15:01:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7520, 14.9240 at 26 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 9 19172 19172
Maletto CT 10 3920 23092
Adrano CT 13 36122 59214
Biancavilla CT 13 24007 83221
Ragalna CT 14 3924 87145
Randazzo CT 14 10900 98045
Santa Maria di Licodia CT 15 7641 105686
Maniace CT 16 3765 109451
Zafferana Etnea CT 17 9517 118968
Milo CT 17 1087 120055
Nicolosi CT 18 7463 127518
Belpasso CT 18 28108 155626
Santa Domenica Vittoria ME 19 980 156606
Pedara CT 19 14102 170708
Paternò CT 19 48228 218936
Sant'Alfio CT 19 1582 220518
Moio Alcantara ME 20 717 221235

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Acireale (52622 inhabitants)
31 Km NW of Catania (314555 inhabitants)
74 Km SW of Messina (238439 inhabitants)
75 Km SW of Reggio di Calabria (183035 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
84 Km NW of Siracusa (122291 inhabitants)
93 Km N of Ragusa (73313 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
97 Km NE of Gela (75827 inhabitants)
100 Km N of Modica (54633 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.8 2020-12-07
14:01:01		 37.7517 14.9242 26 2021-02-26
14:56:15		 Bollettino Sismico Italiano INGV 86263871
Reviewed
Rev200 		ML 2.8 2020-12-07
14:01:01		 37.753 14.888 21 2021-01-28
10:37:37		 Sala Operativa INGV_OE (Catania) 85266461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-07 14:01:01 ± 0.09
Latitude 37.7517 ± 0.0045
Longitude 14.9242 ± 0.0057
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86263871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 499
Semi-minor axis of confidence ellipse (meter) 179
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 325
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 35
Number of associated phases, regardless of their use for origin computation 60
Number of defining phases 60
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.04946
Epicentral distance of station farthest from the epicenter (degree) 1.04681
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:2.8

Field Value
Value 2.8
Uncertainty 0.3
Num. used stations 53
Type of magnitude ML
Reference to an origin 86263871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 10:37:25

ML:2.8

Field Value
Value 2.8
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 85266461
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-12-07 14:13:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2020-12-07T14:01:35.21 0.6 undecidable manual S 175 116.1948 98 0.11 41
IV.SOI.EHZ. 2020-12-07T14:01:32.10 0.6 undecidable manual S 70 105.117 99 -0.09 41
IV.HAVL.HHZ. 2020-12-07T14:01:28.40 0.6 undecidable manual S 169 89.5437 101 0.29 42
IV.HMDC.HHZ. 2020-12-07T14:01:27.70 0.6 undecidable manual S 188 88.8444 101 -0.21 42
IV.RAFF.HHZ. 2020-12-07T14:01:25.28 0.6 undecidable manual S 220 76.7676 103 0.52 40
IV.CSLB.HHZ. 2020-12-07T14:01:25.72 0.6 undecidable manual S 285 78.6657 103 0.47 40
IV.MSRU.HHZ. 2020-12-07T14:01:24.69 0.6 undecidable manual S 42 76.368 103 0.02 45
IV.PLLN.EHZ. 2020-12-07T14:01:24.34 0.6 undecidable manual S 292 73.4709 104 0.44 41
IV.PETRA.HHZ. 2020-12-07T14:01:24.07 0.6 undecidable manual S 278 71.5728 104 0.66 37
IV.IVPL.HHZ. 2020-12-07T14:01:23.38 0.6 undecidable manual S 4 69.4749 105 0.5 41
IV.SSY.HHZ. 2020-12-07T14:01:22.24 0.6 undecidable manual S 169 67.1772 105 -0.05 45
IV.HPAC.HHZ. 2020-12-07T14:01:20.61 0.6 undecidable manual P 175 116.1948 98 -0.22 39
IV.MPNC.HHZ. 2020-12-07T14:01:20.37 0.6 undecidable manual S 40 57.6978 108 0.52 42
IV.SOI.EHZ. 2020-12-07T14:01:19.69 0.3 undecidable manual P 70 105.117 99 0.54 57
IV.HAGA.HHZ. 2020-12-07T14:01:19.47 0.6 undecidable manual S 159 55.5999 109 0.13 46
MN.CEL.HHZ. 2020-12-07T14:01:19.29 0.6 undecidable manual P 56 101.8203 100 0.64 37
IV.IACL.HHZ. 2020-12-07T14:01:17.90 0.3 undecidable manual P 330 99.9222 100 -0.46 59
IV.SICLA.EHZ. 2020-12-07T14:01:17.22 0.6 undecidable manual P 51 88.9443 101 0.52 40
IV.CSLB.HHZ. 2020-12-07T14:01:16.09 0.3 undecidable manual P 285 78.6657 103 0.94 50
IV.HAVL.HHZ. 2020-12-07T14:01:16.51 0.3 undecidable manual P 169 89.5437 101 -0.28 61
IV.HLNI.HHZ. 2020-12-07T14:01:16.50 0.3 undecidable manual S 186 44.9217 114 -0.19 69
IV.CPTP.HHZ. 2020-12-07T14:01:16.11 0.6 undecidable manual P 241 77.0673 103 1.2 30
IV.HMDC.HHZ. 2020-12-07T14:01:16.27 0.3 undecidable manual P 188 88.8444 101 -0.41 60
IV.MSRU.HHZ. 2020-12-07T14:01:15.10 0.3 undecidable manual P 42 76.368 103 0.29 64
IV.PLLN.EHZ. 2020-12-07T14:01:15.05 0.3 undecidable manual P 292 73.4709 104 0.68 56
IV.MSFR.HHZ. 2020-12-07T14:01:15.75 0.6 undecidable manual S 317 42.7239 115 -0.41 45
IV.IVPL.HHZ. 2020-12-07T14:01:14.11 0.3 undecidable manual P 4 69.4749 105 0.34 64
IV.RAFF.HHZ. 2020-12-07T14:01:14.93 0.3 undecidable manual P 220 76.7676 103 0.06 66
IV.PETRA.HHZ. 2020-12-07T14:01:14.54 0.3 undecidable manual P 278 71.5728 104 0.46 61
IV.MUCR.HHZ. 2020-12-07T14:01:13.28 0.3 undecidable manual S 352 32.6451 123 -0.51 66
IV.GALF.HHZ. 2020-12-07T14:01:13.64 0.6 undecidable manual S 262 31.746 124 0.05 48
IV.SSY.HHZ. 2020-12-07T14:01:13.29 0.1 negative manual P 169 67.1772 105 -0.15 88
IV.MPNC.HHZ. 2020-12-07T14:01:12.07 0.1 positive manual P 40 57.6978 108 0.04 93
IV.EPOZ.HHZ. 2020-12-07T14:01:12.55 0.6 undecidable manual S 111 24.8529 132 0.41 46
IV.EVRN.HHZ. 2020-12-07T14:01:11.60 0.3 undecidable manual S 110 19.7691 139 0.41 69
IV.ECBD.HHN. 2020-12-07T14:01:11.09 0.6 undecidable manual S 77 14.5743 148 0.73 41
IV.HAGA.HHZ. 2020-12-07T14:01:11.49 0.1 negative manual P 159 55.5999 109 -0.24 88
IV.EMCN.HNZ. 2020-12-07T14:01:10.35 0.6 undecidable manual S 65 10.5783 156 0.5 45
IV.HLNI.HHZ. 2020-12-07T14:01:10.04 0.3 undecidable manual P 186 44.9217 114 -0.17 69
IV.ECTS.HHZ. 2020-12-07T14:01:10.84 0.6 undecidable manual S 50 22.4553 135 -0.85 39
IV.EPIT.HHN. 2020-12-07T14:01:10.06 0.6 undecidable manual S 60 13.3755 150 -0.14 49
IV.ESML.HHZ. 2020-12-07T14:01:10.95 0.6 undecidable manual S 195 15.3735 146 0.48 45
IV.MSFR.HHZ. 2020-12-07T14:01:09.26 0.1 undecidable manual P 317 42.7239 115 -0.63 83
IV.ESLN.HHZ. 2020-12-07T14:01:09.50 0.3 undecidable manual S 146 7.7811 162 -0.09 75
IV.EPZF.HHZ. 2020-12-07T14:01:09.63 0.6 undecidable manual S 324 9.9789 157 -0.16 50
IV.ECHR.HHE. 2020-12-07T14:01:09.84 0.6 undecidable manual S 188 7.2927 163 0.29 47
IV.GALF.HHZ. 2020-12-07T14:01:08.04 0.1 undecidable manual P 262 31.746 124 -0.38 91
IV.EPOZ.HHZ. 2020-12-07T14:01:08.03 0.3 undecidable manual P 111 24.8529 132 0.46 68
IV.ECTS.HHZ. 2020-12-07T14:01:07.04 0.1 undecidable manual P 50 22.4553 135 -0.28 93
IV.MUCR.HHZ. 2020-12-07T14:01:07.82 0.1 undecidable manual P 352 32.6451 123 -0.71 81
IV.ECBD.HHN. 2020-12-07T14:01:06.50 0.1 undecidable manual P 77 14.5743 148 -0.05 99
IV.ESML.HHZ. 2020-12-07T14:01:06.47 0.1 undecidable manual P 195 15.3735 146 -0.14 98
IV.ECPN.HHZ. 2020-12-07T14:01:06.21 0.3 undecidable manual P 99 5.4945 167 0.2 73
IV.EMCN.HNZ. 2020-12-07T14:01:06.30 0.3 undecidable manual P 65 10.5783 156 0.05 75
IV.EVRN.HHZ. 2020-12-07T14:01:06.88 0.1 negative manual P 110 19.7691 139 -0.15 96
IV.EPIT.HHN. 2020-12-07T14:01:06.48 0.1 undecidable manual P 60 13.3755 150 0.03 100
IV.ECHR.HHE. 2020-12-07T14:01:05.83 0.1 undecidable manual P 188 7.2927 163 -0.25 97
IV.EMSG.HHN. 2020-12-07T14:01:05.67 0.1 undecidable manual P 16 7.9809 161 -0.44 93
IV.EPZF.HHZ. 2020-12-07T14:01:05.50 0.1 undecidable manual P 324 9.9789 157 -0.72 85
IV.ESLN.HHZ. 2020-12-07T14:01:05.77 0.3 undecidable manual P 146 7.7811 162 -0.33 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMCN.HHE. ML:3.4 0.015235415 0.3776 AML other m 2020-12-07T14:01:11.02
IV.EMCN.HNE. ML:3.4 0.015971125 0.3712 AML other m 2020-12-07T14:01:11.02
IV.EMCN.HHN. ML:3.3 0.01014 0.52 AML other m 2020-12-07T14:01:11.08
IV.EMCN.HNN. ML:3.2 0.0096360765 0.512 AML other m 2020-12-07T14:01:11.08
IV.EVRN.HNN. ML:2.9 0.0039821235 0.2304 AML other m 2020-12-07T14:01:12.46
IV.ESML.HHE. ML:3.0 0.00554 0.5 AML other m 2020-12-07T14:01:12.53
IV.EVRN.HHE. ML:2.9 0.0035046590000000002 0.1984 AML other m 2020-12-07T14:01:12.60
IV.ESLN.HHN. ML:2.7 0.0029055065000000006 0.3584 AML other m 2020-12-07T14:01:12.57
IV.EPOZ.HHE. ML:2.8 0.0028432825 0.2816 AML other m 2020-12-07T14:01:14.90
IV.GALF.HNE. ML:2.4 0.0009704999999999999 1.44 AML other m 2020-12-07T14:01:14.21
IV.GALF.HHE. ML:3.3 0.007305 0.66 AML other m 2020-12-07T14:01:14.94
IV.MUCR.HHE. ML:2.7 0.0016600000000000002 0.34 AML other m 2020-12-07T14:01:14.78
IV.GALF.HNN. ML:2.4 0.0008200000000000001 0.52 AML other m 2020-12-07T14:01:15.44
IV.GALF.HHN. ML:3.4 0.008305 0.5 AML other m 2020-12-07T14:01:15.44
IV.EPOZ.HHN. ML:2.8 0.00278 0.28 AML other m 2020-12-07T14:01:15.37
IV.EVRN.HHN. ML:2.9 0.003985 0.22 AML other m 2020-12-07T14:01:17.55
IV.HLNI.HHE. ML:2.6 0.0011469393000000001 0.1792 AML other m 2020-12-07T14:01:18.13
IV.MUCR.HHN. ML:2.6 0.0012549999999999998 1.5 AML other m 2020-12-07T14:01:20.02
IV.HAGA.HHN. ML:2.6 0.0008034735499999999 0.3392 AML other m 2020-12-07T14:01:21.06
IV.HAGA.HHE. ML:2.5 0.0006810689500000001 0.2368 AML other m 2020-12-07T14:01:21.64
IV.MPNC.HHE. ML:2.9 0.001605 0.48 AML other m 2020-12-07T14:01:21.70
IV.MPNC.HHN. ML:2.9 0.0015049999999999998 0.72 AML other m 2020-12-07T14:01:21.42
IV.SSY.HHE. ML:3.4 0.0036614145 0.1984 AML other m 2020-12-07T14:01:23.07
IV.SSY.HHN. ML:3.6 0.0074563534999999995 0.2368 AML other m 2020-12-07T14:01:23.15
IV.IVPL.HHE. ML:2.9 0.001315 1.42 AML other m 2020-12-07T14:01:26.74
IV.RAFF.HHN. ML:2.6 0.0005394999999999999 0.56 AML other m 2020-12-07T14:01:27.59
IV.RAFF.HHE. ML:2.7 0.0007889999999999999 0.44 AML other m 2020-12-07T14:01:27.49
IV.IVPL.HHN. ML:2.8 0.00110549195 0.4224 AML other m 2020-12-07T14:01:28.20
IV.HMDC.HHN. ML:3.3 0.0021418695000000004 0.3392 AML other m 2020-12-07T14:01:28.94
IV.HMDC.HNN. ML:3.2 0.002 1.6 AML other m 2020-12-07T14:01:29.95
IV.HAVL.HHE. ML:3.1 0.001365 0.3 AML other m 2020-12-07T14:01:29.25
IV.HAVL.HHN. ML:3.3 0.0023200000000000004 0.26 AML other m 2020-12-07T14:01:29.12
IV.PLLN.EHE. ML:3.1 0.0017421625 0.5376 AML other m 2020-12-07T14:01:29.21
IV.PLLN.EHN. ML:3.0 0.00136886965 0.4608 AML other m 2020-12-07T14:01:29.63
IV.CSLB.HHE. ML:2.2 0.0001905 0.5 AML other m 2020-12-07T14:01:30.25
IV.CSLB.HHN. ML:2.3 0.000258 0.42 AML other m 2020-12-07T14:01:30.26
IV.MSRU.HHN. ML:2.6 0.00058919 0.32 AML other m 2020-12-07T14:01:30.85
IV.PETRA.HHN. ML:2.6 0.000592 0.46 AML other m 2020-12-07T14:01:30.87
IV.MSRU.HHE. ML:2.6 0.00061136985 0.2816 AML other m 2020-12-07T14:01:30.76
IV.HMDC.HHE. ML:3.0 0.001248019 0.3008 AML other m 2020-12-07T14:01:30.92
IV.HMDC.HNE. ML:3.0 0.00114 1.7 AML other m 2020-12-07T14:01:30.08
IV.IACL.HHE. ML:2.8 0.00061575555 0.256 AML other m 2020-12-07T14:01:33.17
IV.SICLA.EHE. ML:2.6 0.00043836315000000004 0.5632 AML other m 2020-12-07T14:01:33.65
IV.SICLA.EHN. ML:2.5 0.0003421205 0.4416 AML other m 2020-12-07T14:01:35.03
IV.SOI.EHE. ML:2.4 0.000194 0.42 AML other m 2020-12-07T14:01:36.87
IV.SOI.EHN. ML:2.4 0.0002055 1.42 AML other m 2020-12-07T14:01:36.80
MN.CEL.HHN. ML:2.2 0.00016569325000000002 0.5248 AML other m 2020-12-07T14:01:37.32
MN.CEL.HNE. ML:2.1 0.00012219348 0.2816 AML other m 2020-12-07T14:01:37.71
MN.CEL.HNN. ML:2.2 0.0001586208 0.2752 AML other m 2020-12-07T14:01:38.27
IV.IACL.HHN. ML:2.7 0.00048995735 0.3648 AML other m 2020-12-07T14:01:39.41
MN.CEL.HHE. ML:2.1 0.00011960645 0.3584 AML other m 2020-12-07T14:01:39.93
IV.HPAC.HHN. ML:2.9 0.00062247935 0.2624 AML other m 2020-12-07T14:01:41.13
IV.HPAC.HHE. ML:2.9 0.0006659112499999999 0.3776 AML other m 2020-12-07T14:01:44.74
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
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