Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 08-12-2021 and time 07:05:10 (Italy) in region 8 km E Aidone (EN)

A magnitude ML 2.1 earthquake occured in region: 8 km E Aidone (EN), on

  • 08-12-2021 06:05:10 (UTC)
  • 08-12-2021 07:05:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.3940, 14.5380 at 34 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
Aidone EN 8 4889 4889
Raddusa CT 9 3178 8067
Mirabella Imbaccari CT 11 4912 12979
Ramacca CT 14 10894 23873
Castel di Iudica CT 15 4625 28498
Piazza Armerina EN 15 21886 50384
San Michele di Ganzaria CT 16 3245 53629
Caltagirone CT 17 38686 92315
Valguarnera Caropepe EN 18 7866 100181
San Cono CT 19 2697 102878
Mineo CT 20 5159 108037
Palagonia CT 20 16608 124645

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Caltanissetta (63360 inhabitants)
44 Km NE of Gela (75827 inhabitants)
49 Km N of Vittoria (63339 inhabitants)
50 Km W of Catania (314555 inhabitants)
55 Km N of Ragusa (73313 inhabitants)
61 Km W of Acireale (52622 inhabitants)
63 Km NW of Modica (54633 inhabitants)
77 Km NW of Siracusa (122291 inhabitants)
85 Km E of Agrigento (59770 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 2021-12-08
06:05:10		 37.3943 14.5377 34 2022-03-30
13:04:35		 Bollettino Sismico Italiano INGV 100568741
Reviewed
Rev100 		ML 2.4 2021-12-08
06:05:09		 37.3948 14.5443 35 2021-12-08
06:16:59		 Sala Sismica INGV-Roma 98274421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-08 06:05:10 ± 0.18
Latitude 37.3943 ± 0.0054
Longitude 14.5377 ± 0.0079
Depth (km) 34 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100568741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 719
Semi-minor axis of confidence ellipse (meter) 341
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 97
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.22123
Epicentral distance of station farthest from the epicenter (degree) 0.74104
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 100568741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-17 16:31:35

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 98274421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-08 06:16:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCPD.HHZ. 2021-12-08T06:05:35.50 0.3 undecidable manual S 12 82.251 108 -0.03 71
IV.ISPIC.EHZ. 2021-12-08T06:05:34.32 0.3 undecidable manual S 154 75.369 110 0.52 64
IV.MUCR.HHZ. 2021-12-08T06:05:34.08 0.6 undecidable manual S 22 77.7666 109 -0.31 45
IV.HSRS.HHZ. 2021-12-08T06:05:32.69 0.3 undecidable manual S 119 69.0753 112 0.47 65
IV.CROCE.HHZ. 2021-12-08T06:05:30.71 0.3 undecidable manual S 180 62.2932 114 0.16 72
IV.SSY.HHZ. 2021-12-08T06:05:29.26 0.3 undecidable manual S 119 54.1014 118 0.68 61
IV.HAGA.HHZ. 2021-12-08T06:05:29.28 0.3 undecidable manual S 102 55.7997 117 0.3 69
IV.HMDC.HHZ. 2021-12-08T06:05:28.36 0.3 undecidable manual S 156 52.9026 118 0.06 74
IV.HVIT.HHZ. 2021-12-08T06:05:26.33 0.3 undecidable manual S 182 44.622 123 -0.05 75
IV.HCRL.HHZ. 2021-12-08T06:05:26.68 0.3 undecidable manual S 106 45.3213 122 0.13 73
IV.MUCR.HHZ. 2021-12-08T06:05:24.35 0.3 undecidable manual P 22 77.7666 109 0.21 69
IV.MCPD.HHZ. 2021-12-08T06:05:24.79 0.1 undecidable manual P 12 82.251 108 -0.01 95
IV.HVZN.HHZ. 2021-12-08T06:05:23.23 0.6 undecidable manual S 147 28.6491 136 0.14 51
IV.ISPIC.EHZ. 2021-12-08T06:05:23.78 0.1 undecidable manual P 154 75.369 110 -0.02 96
IV.CSLB.HHZ. 2021-12-08T06:05:23.07 0.3 undecidable manual P 325 73.4709 110 -0.46 65
IV.CMDO.HHZ. 2021-12-08T06:05:23.22 0.3 undecidable manual P 277 63.3921 114 1.14 53
IV.EPOZ.HHZ. 2021-12-08T06:05:22.78 0.3 undecidable manual P 62 64.9905 113 0.47 66
IV.EPZF.HHZ. 2021-12-08T06:05:22.08 0.6 undecidable manual P 30 55.3002 117 1.13 34
IV.RAFF.HHZ. 2021-12-08T06:05:22.40 0.6 undecidable manual S 219 24.5532 141 0.04 53
IV.HLNI.HHZ. 2021-12-08T06:05:22.63 0.3 undecidable manual S 100 29.9478 135 -0.69 67
IV.HSRS.HHZ. 2021-12-08T06:05:22.55 0.3 undecidable manual P 119 69.0753 112 -0.34 69
IV.CROCE.HHZ. 2021-12-08T06:05:21.69 0.1 undecidable manual P 180 62.2932 114 -0.23 93
IV.EVRN.HHZ. 2021-12-08T06:05:21.84 0.6 undecidable manual P 58 61.9935 114 -0.03 49
IV.CLTA.HHZ. 2021-12-08T06:05:21.50 0.1 undecidable manual P 243 57.1983 116 0.29 95
IV.HAGA.HHZ. 2021-12-08T06:05:20.80 0.1 positive manual P 102 55.7997 117 -0.22 96
IV.SSY.HHZ. 2021-12-08T06:05:20.86 0.1 positive manual P 119 54.1014 118 0.07 98
IV.RESU.HHZ. 2021-12-08T06:05:20.99 0.6 undecidable manual P 304 50.7159 119 0.66 44
IV.ESCV.HHN. 2021-12-08T06:05:20.13 0.6 undecidable manual P 32 46.1205 122 0.42 47
IV.HMDC.HHZ. 2021-12-08T06:05:20.41 0.1 undecidable manual P 156 52.9026 118 -0.22 96
IV.HVIT.HHZ. 2021-12-08T06:05:19.23 0.1 negative manual P 182 44.622 123 -0.29 95
IV.HCRL.HHZ. 2021-12-08T06:05:19.35 0.1 undecidable manual P 106 45.3213 122 -0.27 97
IV.GALF.HHZ. 2021-12-08T06:05:18.26 0.3 undecidable manual P 4 35.2425 130 -0.09 76
IV.ESML.HHZ. 2021-12-08T06:05:18.51 0.3 undecidable manual P 50 39.0276 127 -0.3 73
IV.HVZN.HHZ. 2021-12-08T06:05:17.38 0.1 undecidable manual P 147 28.6491 136 -0.23 100
IV.HLNI.HHZ. 2021-12-08T06:05:17.24 0.1 positive manual P 100 29.9478 135 -0.51 95
IV.RAFF.HHZ. 2021-12-08T06:05:16.70 0.1 undecidable manual P 219 24.5532 141 -0.5 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHN. ML:2.5 0.0009310632000000001 0.1792 AML other m 2021-12-08T06:05:22.95
IV.HLNI.HHE. ML:2.4 0.0007370091000000001 0.0992 AML other m 2021-12-08T06:05:22.97
IV.HVZN.HHE. ML:2.4 0.0007786992000000001 0.1824 AML other m 2021-12-08T06:05:23.97
IV.HVZN.HHN. ML:2.4 0.00073558855 0.2208 AML other m 2021-12-08T06:05:24.51
IV.HVIT.HHE. ML:1.8 0.00013729711549999998 0.1408 AML other m 2021-12-08T06:05:26.50
IV.HVIT.HHN. ML:1.9 0.00020234763 0.1408 AML other m 2021-12-08T06:05:26.57
IV.HCRL.HHN. ML:2.2 0.0003894866 0.0992 AML other m 2021-12-08T06:05:27.31
IV.HCRL.HHE. ML:2.2 0.000361 0.48 AML other m 2021-12-08T06:05:27.40
IV.HMDC.HNN. ML:2.1 0.00024163639999999996 0.24 AML other m 2021-12-08T06:05:28.77
IV.HMDC.HHN. ML:2.1 0.00024150585000000003 0.24 AML other m 2021-12-08T06:05:28.77
IV.HMDC.HHE. ML:2.0 0.00021874959999999998 0.1984 AML other m 2021-12-08T06:05:28.78
IV.HMDC.HNE. ML:2.0 0.00020301679999999998 0.1696 AML other m 2021-12-08T06:05:28.79
IV.SSY.HHE. ML:2.8 0.0013 0.14 AML other m 2021-12-08T06:05:30.57
IV.SSY.HNN. ML:2.9 0.0014849999999999998 0.18 AML other m 2021-12-08T06:05:30.66
IV.SSY.HNE. ML:2.9 0.0016 0.14 AML other m 2021-12-08T06:05:30.74
IV.SSY.HHN. ML:3.5 0.005735 0.14 AML other m 2021-12-08T06:05:30.74
IV.CROCE.HNE. ML:1.5 0.000055263225 0.1184 AML other m 2021-12-08T06:05:31.14
IV.HAGA.HHN. ML:2.1 0.00022983875000000002 0.0992 AML other m 2021-12-08T06:05:31.27
IV.HAGA.HHE. ML:2.0 0.000170534267 0.1184 AML other m 2021-12-08T06:05:31.48
IV.HSRS.HHN. ML:1.9 0.00011353869999999999 0.08 AML other m 2021-12-08T06:05:33.83
IV.HSRS.HHE. ML:2.0 0.00014544466 0.1216 AML other m 2021-12-08T06:05:34.26
IV.CROCE.HNN. ML:1.7 0.00008493621 0.192 AML other m 2021-12-08T06:05:34.56
IV.CROCE.HHN. ML:1.6 0.00006587575000000001 0.1792 AML other m 2021-12-08T06:05:34.57
IV.CROCE.HHE. ML:1.5 0.000052829368 0.16 AML other m 2021-12-08T06:05:34.64
IV.ISPIC.HNN. ML:2.3 0.0002476332 0.1792 AML other m 2021-12-08T06:05:35.44
IV.ISPIC.EHN. ML:2.1 0.00018728594 0.16 AML other m 2021-12-08T06:05:35.44
IV.ISPIC.HNE. ML:2.4 0.00036515155 0.2208 AML other m 2021-12-08T06:05:35.37
IV.ISPIC.EHE. ML:2.4 0.0003395 0.22 AML other m 2021-12-08T06:05:35.37
IV.MUCR.HHE. ML:2.0 0.0001317989 0.32 AML other m 2021-12-08T06:05:36.82
IV.MUCR.HHN. ML:2.0 0.0001277626 0.4 AML other m 2021-12-08T06:05:38.12
IV.MCPD.HHE. ML:1.6 0.000043100071999999994 0.24 AML other m 2021-12-08T06:05:38.04
IV.MCPD.HHN. ML:1.9 0.000089035665 0.4416 AML other m 2021-12-08T06:05:42.20
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