Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 23-12-2021 and time 20:15:02 (Italy) in region 3 km SE Librizzi (ME)

A magnitude ML 1.6 earthquake occured in region: 3 km SE Librizzi (ME), on

  • 23-12-2021 19:15:02 (UTC)
  • 23-12-2021 20:15:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.0800, 14.9810 at 3 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
Librizzi ME 3 1660 1660
San Piero Patti ME 3 2915 4575
Raccuja ME 7 1041 5616
Montagnareale ME 7 1615 7231
Montalbano Elicona ME 7 2287 9518
Patti ME 7 13431 22949
Basicò ME 7 612 23561
Oliveri ME 9 2181 25742
Sant'Angelo di Brolo ME 9 3090 28832
Ucria ME 9 1058 29890
Falcone ME 10 2808 32698
Tripi ME 11 873 33571
Sinagra ME 11 2705 36276
Floresta ME 12 485 36761
Gioiosa Marea ME 13 7074 43835
Furnari ME 13 3784 47619
Mazzarrà Sant'Andrea ME 14 1531 49150
Ficarra ME 14 1469 50619
Piraino ME 14 3962 54581
Tortorici ME 15 6435 61016
Novara di Sicilia ME 15 1337 62353
Castell'Umberto ME 15 3128 65481
Brolo ME 16 5783 71264
Roccella Valdemone ME 16 666 71930
Rodì Milici ME 17 2056 73986
Terme Vigliatore ME 17 7395 81381
Naso ME 18 3813 85194
San Salvatore di Fitalia ME 18 1319 86513
Santa Domenica Vittoria ME 18 980 87493
Malvagna ME 19 733 88226
Galati Mamertino ME 19 2627 90853
Fondachelli-Fantina ME 20 1019 91872
Mirto ME 20 974 92846

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km W of Messina (238439 inhabitants)
54 Km N of Acireale (52622 inhabitants)
58 Km W of Reggio di Calabria (183035 inhabitants)
65 Km N of Catania (314555 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 1.6 2021-12-23
19:15:02		 38.0798 14.9807 3 2022-03-30
13:04:38		 Bollettino Sismico Italiano INGV 101214141
Reviewed
Rev100 		ML 1.6 2021-12-23
19:15:02		 38.0733 14.9868 4 2021-12-23
19:27:56		 Sala Sismica INGV-Roma 98859751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-23 19:15:02 ± 0.06
Latitude 38.0798 ± 0.0027
Longitude 14.9807 ± 0.0046
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101214141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 62
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.57916
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 101214141
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-25 14:36:00

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 98859751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-23 19:27:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IFIL.HHZ. 2021-12-23T19:15:24.21 0.6 undecidable manual S 327 64.2912 50 0.3 44
3D.OEM8.HHN. 2021-12-23T19:15:17.52 0.3 undecidable manual S 353 43.5231 94 -0.15 70
IV.IVLT.HHN. 2021-12-23T19:15:15.27 0.3 undecidable manual S 355 35.2425 95 0.47 67
IV.IVPL.HHZ. 2021-12-23T19:15:14.50 0.3 undecidable manual S 360 32.8449 95 0.5 66
IV.IVGP.HHZ. 2021-12-23T19:15:14.99 0.6 undecidable manual S 357 35.2425 95 0.19 47
IV.IVUG.HHZ. 2021-12-23T19:15:14.37 0.3 undecidable manual S 1 35.0427 95 -0.39 68
IV.IFIL.HHZ. 2021-12-23T19:15:14.69 0.3 undecidable manual P 327 64.2912 50 -0.19 67
IV.MSFR.HHZ. 2021-12-23T19:15:14.32 0.6 undecidable manual S 262 34.3434 95 -0.19 47
IV.MPNC.HHZ. 2021-12-23T19:15:13.99 0.6 undecidable manual S 77 33.3444 95 -0.16 48
IV.MILZ.HHN. 2021-12-23T19:15:13.58 0.3 undecidable manual S 46 30.4473 96 0.41 68
IV.EPZF.HHZ. 2021-12-23T19:15:12.79 0.3 undecidable manual S 201 30.3474 96 -0.35 69
IV.ILOS.HHN. 2021-12-23T19:15:11.08 0.6 undecidable manual P 356 40.626 94 0.37 45
IV.ECTS.HHZ. 2021-12-23T19:15:11.11 0.6 undecidable manual S 151 25.1526 97 -0.22 48
IV.EMFO.HHE. 2021-12-23T19:15:10.88 0.6 undecidable manual P 166 39.3273 95 0.43 44
3D.OEM5.HHZ. 2021-12-23T19:15:10.24 0.6 undecidable manual P 358 38.0286 95 0.06 48
IV.ECZM.HHN. 2021-12-23T19:15:10.77 0.6 undecidable manual P 190 39.2274 95 0.35 45
IV.MCPD.HHZ. 2021-12-23T19:15:10.20 0.6 undecidable manual S 282 22.2555 98 -0.13 49
IV.AIO.HHZ. 2021-12-23T19:15:10.92 0.6 undecidable manual S 119 25.1526 97 -0.41 46
3D.OEM8.HHN. 2021-12-23T19:15:10.96 0.1 undecidable manual P 353 43.5231 94 -0.32 90
3D.OEM4.HHN. 2021-12-23T19:15:09.92 0.3 undecidable manual P 355 36.741 95 0 73
IV.ECBD.HHN. 2021-12-23T19:15:09.79 0.3 undecidable manual P 164 34.5432 95 0.31 69
IV.MSFR.HHZ. 2021-12-23T19:15:09.05 0.1 undecidable manual P 262 34.3434 95 -0.41 90
IV.IVPL.HHZ. 2021-12-23T19:15:09.22 0.1 undecidable manual P 360 32.8449 95 0.06 97
IV.IVCR.HHZ. 2021-12-23T19:15:09.61 0.3 undecidable manual P 357 36.6411 95 -0.29 69
IV.MPNC.HHZ. 2021-12-23T19:15:09.00 0.3 undecidable manual P 77 33.3444 95 -0.24 70
IV.IVGP.HHZ. 2021-12-23T19:15:09.50 0.3 undecidable manual P 357 35.2425 95 -0.12 72
IV.IVLT.HHN. 2021-12-23T19:15:09.56 0.1 undecidable manual P 355 35.2425 95 -0.05 97
IV.EPIT.HHZ. 2021-12-23T19:15:09.03 0.1 positive manual P 167 30.5472 96 0.34 92
IV.EMCN.HHN. 2021-12-23T19:15:09.47 0.6 undecidable manual P 172 32.3454 96 0.42 45
IV.IVUG.HHZ. 2021-12-23T19:15:09.41 0.3 undecidable manual P 1 35.0427 95 -0.19 71
IV.MILZ.HHN. 2021-12-23T19:15:08.80 0.6 undecidable manual P 46 30.4473 96 0.12 48
IV.EMNR.HHZ. 2021-12-23T19:15:08.85 0.1 undecidable manual P 172 29.4483 96 0.38 92
IV.EPZF.HHZ. 2021-12-23T19:15:08.63 0.3 undecidable manual P 201 30.3474 96 -0.03 74
IV.ECTS.HHZ. 2021-12-23T19:15:07.42 0.6 undecidable manual P 151 25.1526 97 -0.19 48
IV.AIO.HHZ. 2021-12-23T19:15:07.15 0.1 positive manual P 119 25.1526 97 -0.47 90
IV.MCPD.HHZ. 2021-12-23T19:15:06.93 0.1 positive manual P 282 22.2555 98 -0.11 98
IV.MUCR.HHZ. 2021-12-23T19:15:06.62 0.6 undecidable manual S 246 10.1787 107 0.38 47
IV.MUCR.HHZ. 2021-12-23T19:15:04.79 0.1 positive manual P 246 10.1787 107 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHN. ML:1.8 0.00116029235 0.2944 AML other m 2021-12-23T19:15:06.93
IV.MUCR.HHE. ML:1.6 0.0007035 0.26 AML other m 2021-12-23T19:15:07.20
IV.MCPD.HHN. ML:1.1 0.0000911 0.42 AML other m 2021-12-23T19:15:11.01
IV.AIO.HHN. ML:1.6 0.000279 0.18 AML other m 2021-12-23T19:15:12.21
IV.MCPD.HHE. ML:1.2 0.00010286354 0.256 AML other m 2021-12-23T19:15:12.59
IV.AIO.HHE. ML:1.5 0.00019304845000000002 0.2048 AML other m 2021-12-23T19:15:12.72
IV.MPNC.HHE. ML:1.5 0.0001336355 0.3968 AML other m 2021-12-23T19:15:15.05
IV.IVPL.HHN. ML:1.8 0.00025274845 0.4224 AML other m 2021-12-23T19:15:15.60
IV.EPZF.HHE. ML:1.4 0.0001395 0.56 AML other m 2021-12-23T19:15:15.68
IV.EPIT.HHE. ML:1.7 0.00027171424999999997 0.256 AML other m 2021-12-23T19:15:16.17
IV.IVGP.HHN. ML:1.6 0.00016867159999999997 0.1408 AML other m 2021-12-23T19:15:16.28
IV.MPNC.HHN. ML:1.4 0.0001162935 0.3968 AML other m 2021-12-23T19:15:16.47
IV.MSFR.HHE. ML:0.9 0.000037320465 0.1792 AML other m 2021-12-23T19:15:16.81
IV.MSFR.HHN. ML:1.0 0.0000431 0.24 AML other m 2021-12-23T19:15:17.58
IV.IVGP.HHE. ML:1.5 0.00014221015 0.1152 AML other m 2021-12-23T19:15:18.55
IV.IVPL.HNN. ML:1.7 0.000223415535 0.2048 AML other m 2021-12-23T19:15:19.11
IV.EPZF.HHN. ML:1.5 0.00016934335 0.3584 AML other m 2021-12-23T19:15:19.23
IV.IVPL.HHE. ML:1.7 0.0002100683 0.2432 AML other m 2021-12-23T19:15:19.99
IV.IVPL.HNE. ML:1.6 0.0001736485 0.1792 AML other m 2021-12-23T19:15:19.88
IV.EPIT.HHN. ML:1.8 0.00033512905000000005 0.32 AML other m 2021-12-23T19:15:20.40
IV.IFIL.HHE. ML:2.2 0.00031886275 0.1664 AML other m 2021-12-23T19:15:26.68
IV.IFIL.HHN. ML:1.9 0.00013810949999999998 0.2944 AML other m 2021-12-23T19:15:28.79
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