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.

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

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 2.1 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:2.4

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

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
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCPD.HHZ. 2021-12-08T06:05:35.50 0.3 undecidable manual S 12 0.7410 108 -0.03 71
IV.MUCR.HHZ. 2021-12-08T06:05:34.08 0.6 undecidable manual S 22 0.7006 109 -0.31 45
IV.ISPIC.EHZ. 2021-12-08T06:05:34.32 0.3 undecidable manual S 154 0.6790 110 0.52 64
IV.HSRS.HHZ. 2021-12-08T06:05:32.69 0.3 undecidable manual S 119 0.6223 112 0.47 65
IV.CROCE.HHZ. 2021-12-08T06:05:30.71 0.3 undecidable manual S 180 0.5612 114 0.16 72
IV.HAGA.HHZ. 2021-12-08T06:05:29.28 0.3 undecidable manual S 102 0.5027 117 0.3 69
IV.SSY.HHZ. 2021-12-08T06:05:29.26 0.3 undecidable manual S 119 0.4874 118 0.68 61
IV.HMDC.HHZ. 2021-12-08T06:05:28.36 0.3 undecidable manual S 156 0.4766 118 0.06 74
IV.HCRL.HHZ. 2021-12-08T06:05:26.68 0.3 undecidable manual S 106 0.4083 122 0.13 73
IV.HVIT.HHZ. 2021-12-08T06:05:26.33 0.3 undecidable manual S 182 0.4020 123 -0.05 75
IV.MUCR.HHZ. 2021-12-08T06:05:24.35 0.3 undecidable manual P 22 0.7006 109 0.21 69
IV.MCPD.HHZ. 2021-12-08T06:05:24.79 0.1 undecidable manual P 12 0.7410 108 -0.01 95
IV.ISPIC.EHZ. 2021-12-08T06:05:23.78 0.1 undecidable manual P 154 0.6790 110 -0.02 96
IV.CSLB.HHZ. 2021-12-08T06:05:23.07 0.3 undecidable manual P 325 0.6619 110 -0.46 65
IV.CMDO.HHZ. 2021-12-08T06:05:23.22 0.3 undecidable manual P 277 0.5711 114 1.14 53
IV.HVZN.HHZ. 2021-12-08T06:05:23.23 0.6 undecidable manual S 147 0.2581 136 0.14 51
IV.EPOZ.HHZ. 2021-12-08T06:05:22.78 0.3 undecidable manual P 62 0.5855 113 0.47 66
IV.EPZF.HHZ. 2021-12-08T06:05:22.08 0.6 undecidable manual P 30 0.4982 117 1.13 34
IV.RAFF.HHZ. 2021-12-08T06:05:22.40 0.6 undecidable manual S 219 0.2212 141 0.04 53
IV.HSRS.HHZ. 2021-12-08T06:05:22.55 0.3 undecidable manual P 119 0.6223 112 -0.34 69
IV.HLNI.HHZ. 2021-12-08T06:05:22.63 0.3 undecidable manual S 100 0.2698 135 -0.69 67
IV.CROCE.HHZ. 2021-12-08T06:05:21.69 0.1 undecidable manual P 180 0.5612 114 -0.23 93
IV.EVRN.HHZ. 2021-12-08T06:05:21.84 0.6 undecidable manual P 58 0.5585 114 -0.03 49
IV.CLTA.HHZ. 2021-12-08T06:05:21.50 0.1 undecidable manual P 243 0.5153 116 0.29 95
IV.HAGA.HHZ. 2021-12-08T06:05:20.80 0.1 positive manual P 102 0.5027 117 -0.22 96
IV.SSY.HHZ. 2021-12-08T06:05:20.86 0.1 positive manual P 119 0.4874 118 0.07 98
IV.RESU.HHZ. 2021-12-08T06:05:20.99 0.6 undecidable manual P 304 0.4569 119 0.66 44
IV.ESCV.HHN. 2021-12-08T06:05:20.13 0.6 undecidable manual P 32 0.4155 122 0.42 47
IV.HMDC.HHZ. 2021-12-08T06:05:20.41 0.1 undecidable manual P 156 0.4766 118 -0.22 96
IV.HVIT.HHZ. 2021-12-08T06:05:19.23 0.1 negative manual P 182 0.4020 123 -0.29 95
IV.HCRL.HHZ. 2021-12-08T06:05:19.35 0.1 undecidable manual P 106 0.4083 122 -0.27 97
IV.GALF.HHZ. 2021-12-08T06:05:18.26 0.3 undecidable manual P 4 0.3175 130 -0.09 76
IV.ESML.HHZ. 2021-12-08T06:05:18.51 0.3 undecidable manual P 50 0.3516 127 -0.3 73
IV.HVZN.HHZ. 2021-12-08T06:05:17.38 0.1 undecidable manual P 147 0.2581 136 -0.23 100
IV.HLNI.HHZ. 2021-12-08T06:05:17.24 0.1 positive manual P 100 0.2698 135 -0.51 95
IV.RAFF.HHZ. 2021-12-08T06:05:16.70 0.1 undecidable manual P 219 0.2212 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
IV.SCIAC.HHN. ML:0.0 0.000043077665 0.1792 AML other m 2021-12-08T06:05:46.08
IV.SCIAC.HHE. ML:0.0 0.000040647824999999996 0.1184 AML other m 2021-12-08T06:05:46.22
IV.SCIAC.HNE. ML:0.0 0.000044715995 0.2496 AML other m 2021-12-08T06:05:46.28
IV.SCIAC.HNN. ML:0.0 0.00003823688 0.1792 AML other m 2021-12-08T06:05:47.13
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, http://terremoti.ingv.it/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