Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 02-12-2021 and time 17:53:03 (UTC) in region 6 km SE Castel d'Aiano (BO)

A magnitude ML 1.4 earthquake occured in region: 6 km SE Castel d'Aiano (BO), on

  • 02-12-2021 17:53:03 (UTC)
  • 02-12-2021 18:53:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2410, 11.0560 at 16 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Castel d'Aiano BO 6 1906 1906
Vergato BO 7 7639 9545
Grizzana Morandi BO 8 3916 13461
Camugnano BO 8 1885 15346
Castel di Casio BO 9 3448 18794
Montese MO 10 3353 22147
Gaggio Montano BO 11 4878 27025
Alto Reno Terme BO 11 6960 33985
Zocca MO 13 4719 38704
Castiglione dei Pepoli BO 14 5648 44352
San Benedetto Val di Sambro BO 14 4315 48667
Lizzano in Belvedere BO 16 2212 50879
Sambuca Pistoiese PT 16 1626 52505
Marzabotto BO 16 6779 59284
Monzuno BO 18 6328 65612

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Pistoia (90315 inhabitants)
36 Km SW of Bologna (386663 inhabitants)
40 Km N of Prato (191150 inhabitants)
46 Km S of Modena (184973 inhabitants)
54 Km W of Imola (69797 inhabitants)
55 Km N of Scandicci (50609 inhabitants)
55 Km NW of Firenze (382808 inhabitants)
61 Km SE of Reggio nell'Emilia (171345 inhabitants)
62 Km S of Carpi (70699 inhabitants)
62 Km NE of Lucca (89046 inhabitants)
66 Km W of Faenza (58541 inhabitants)
76 Km E of Massa (69479 inhabitants)
77 Km NE of Viareggio (62467 inhabitants)
78 Km NE of Pisa (89158 inhabitants)
79 Km W of Forlì (117913 inhabitants)
79 Km E of Carrara (63133 inhabitants)
80 Km SW of Ferrara (133155 inhabitants)
85 Km SE of Parma (192836 inhabitants)
93 Km W of Ravenna (159116 inhabitants)
95 Km W of Cesena (96758 inhabitants)
97 Km NE of Livorno (159219 inhabitants)
99 Km E of La Spezia (93959 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
Reviewed
Rev100 		ML 1.4 2021-12-02
17:53:03		 44.2413 11.0562 16 2021-12-02
18:06:01		 Sala Sismica INGV-Roma 98066331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-02 17:53:03 ± 0.2
Latitude 44.2413 ± 0.0090
Longitude 11.0562 ± 0.0113
Depth (km) 16 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98066331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 913
Semi-minor axis of confidence ellipse (meter) 420
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 150
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 16
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37502
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 98066331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-02 18:06:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2021-12-02T17:55:01.70 3.0 negative manual Pg 23.07 0
IT.ORP.HGZ. 2021-12-02T17:55:00.19 3.0 undecidable manual Sn 1.91 0
IX.CLT3.EHZ.02 2021-12-02T17:54:19.88 3.0 undecidable manual Pn 7.33 0
IV.BSSO.HNZ. 2021-12-02T17:54:14.34 3.0 undecidable manual Pg 13.97 0
IV.MCRV.HHZ. 2021-12-02T17:54:14.01 3.0 undecidable manual Pn 1.81 0
OT.OT14.EHZ. 2021-12-02T17:54:13.98 3.0 undecidable manual Pn 6.72 0
IV.PAOL.HHZ. 2021-12-02T17:54:10.68 3.0 undecidable manual Pn 5.04 0
IV.NRCA.HHZ. 2021-12-02T17:54:03.61 3.0 undecidable manual Sn -0.15 0
IV.POFI.HHZ. 2021-12-02T17:53:53.92 3.0 undecidable manual Pn 1.11 0
IV.VOBA.EHZ. 2021-12-02T17:53:45.58 3.0 undecidable manual S -1.64 0
RF.GEPF.HHZ. 2021-12-02T17:53:44.60 3.0 undecidable manual Pn 2.34 0
IV.PE3.EHZ. 2021-12-02T17:53:43.09 3.0 undecidable manual S 1.17 0
GU.RNCA.HHZ. 2021-12-02T17:53:35.94 3.0 undecidable manual Pg 6.29 0
IV.COR1.EHZ. 2021-12-02T17:53:35.09 3.0 negative manual Pg 5.38 0
IV.BDI.HHZ. 2021-12-02T17:53:17.48 0.6 undecidable manual S 242 41.625 99 0.1 49
GU.POPM.HHZ. 2021-12-02T17:53:15.17 0.6 undecidable manual S 228 32.3454 103 0.25 49
IV.MTRZ.HHE. 2021-12-02T17:53:14.59 0.6 undecidable manual S 75 30.3474 105 0.18 50
IV.MOCL.EHZ. 2021-12-02T17:53:14.27 0.6 undecidable manual S 159 28.0497 106 0.45 47
IV.CRMI.HHZ. 2021-12-02T17:53:14.81 3.0 undecidable manual P 0
GU.GSCL.HHE. 2021-12-02T17:53:11.89 0.6 undecidable manual P 288 39.1275 100 0.69 42
IV.BDI.HHZ. 2021-12-02T17:53:11.43 0.6 undecidable manual P 242 41.625 99 -0.17 49
IV.SEI.HHE. 2021-12-02T17:53:10.06 0.6 undecidable manual P 131 31.746 104 -0.04 51
IV.ZCCA.HHZ. 2021-12-02T17:53:10.94 0.6 undecidable manual S 332 13.6752 130 0.54 47
GU.POPM.HHZ. 2021-12-02T17:53:10.02 0.3 undecidable manual P 228 32.3454 103 -0.16 74
IV.MTRZ.HHE. 2021-12-02T17:53:10.43 0.3 undecidable manual P 75 30.3474 105 0.55 68
IV.MPPT.EHZ. 2021-12-02T17:53:10.06 0.3 undecidable manual P 175 31.6461 104 -0.01 77
IV.VISG.HHZ. 2021-12-02T17:53:09.57 0.3 undecidable manual P 101 30.6471 104 -0.35 72
IV.MOCL.EHZ. 2021-12-02T17:53:09.31 0.6 undecidable manual P 159 28.0497 106 -0.23 49
IV.FNVD.HHZ. 2021-12-02T17:53:09.87 0.6 undecidable manual S 147 9.7791 142 0.21 51
IV.FNVD.HHZ. 2021-12-02T17:53:06.83 0.1 positive manual P 147 9.7791 142 -0.31 100
IV.ZCCA.HHZ. 2021-12-02T17:53:06.90 0.1 negative manual P 332 13.6752 130 -0.67 90
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FNVD.HHE. ML:1.9 0.000736137 0.1024 AML other m 2021-12-02T17:53:09.91
IV.FNVD.HHN. ML:2.1 0.0010785 1.92 AML other m 2021-12-02T17:53:09.02
IV.ZCCA.HHN. ML:1.5 0.00025762945 0.3584 AML other m 2021-12-02T17:53:11.65
IV.ZCCA.HHE. ML:1.3 0.00016999999999999999 0.3 AML other m 2021-12-02T17:53:11.54
GU.POPM.HHN. ML:1.4 0.00009900000000000001 1.08 AML other m 2021-12-02T17:53:15.90
GU.POPM.HHE. ML:1.4 0.0001015 0.28 AML other m 2021-12-02T17:53:15.46
IV.ZCCA.HNE. ML:1.3 0.000167145 0.3072 AML other m 2021-12-02T17:53:11.69
IV.ZCCA.HNN. ML:1.5 0.00025311295 0.4992 AML other m 2021-12-02T17:53:11.64
IV.MOCL.EHE. ML:0.9 0.000041076845 0.1664 AML other m 2021-12-02T17:53:15.86
IV.MOCL.EHN. ML:0.9 0.00003678153 0.1152 AML other m 2021-12-02T17:53:15.77
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