Earthquake with magnitude of ML 1.1 on date 31-01-2022 and time 00:07:21 (UTC) in region 4 km W Palazzuolo sul Senio (FI)

A magnitude ML 1.1 earthquake occured in region: 4 km W Palazzuolo sul Senio (FI), on

  • 31-01-2022 00:07:21 (UTC)
  • 31-01-2022 01:07:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1070, 11.4960 at 10 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Palazzuolo sul Senio FI 4 1154 1154
Firenzuola FI 9 4726 5880
Marradi FI 10 3139 9019
Castel del Rio BO 12 1246 10265
Casola Valsenio RA 17 2617 12882
Fontanelice BO 18 1943 14825
Borgo San Lorenzo FI 19 18211 33036
Monghidoro BO 19 3749 36785
Vicchio FI 19 8044 44829

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SW of Imola (69797 inhabitants)
37 Km SW of Faenza (58541 inhabitants)
41 Km NE of Prato (191150 inhabitants)
42 Km NE of Firenze (382808 inhabitants)
45 Km S of Bologna (386663 inhabitants)
45 Km W of Forlì (117913 inhabitants)
46 Km NE of Scandicci (50609 inhabitants)
50 Km E of Pistoia (90315 inhabitants)
60 Km W of Cesena (96758 inhabitants)
66 Km SW of Ravenna (159116 inhabitants)
75 Km SE of Modena (184973 inhabitants)
78 Km NW of Arezzo (99543 inhabitants)
82 Km S of Ferrara (133155 inhabitants)
85 Km E of Lucca (89046 inhabitants)
86 Km W of Rimini (147750 inhabitants)
89 Km N of Siena (53903 inhabitants)
89 Km SE of Carpi (70699 inhabitants)
95 Km SE of Reggio nell'Emilia (171345 inhabitants)
98 Km E of Pisa (89158 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 1.1 2022-01-31
00:07:21
44.1072 11.4957 10 2022-01-31
00:16:49
Sala Sismica INGV-Roma 100379501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-31 00:07:21 ± 0.04
Latitude 44.1072 ± 0.0027
Longitude 11.4957 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 100379501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 276
Semi-minor axis of confidence ellipse (meter) 177
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 343
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.09263
Epicentral distance of station farthest from the epicenter (degree) 0.37502
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations 10
Type of magnitude ML
Reference to an origin 100379501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-31 00:16:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRIS.HHZ. 2022-01-31T00:07:31.38 1.0 undecidable manual S 59 25.1526 50 0.27 23
IV.MOCL.EHZ. 2022-01-31T00:07:31.73 0.3 undecidable manual S 246 27.5502 50 -0.02 72
IV.BOSL.HHN. 2022-01-31T00:07:30.33 0.6 undecidable manual S 206 21.867 115 0.25 46
IV.MPPT.EHE. 2022-01-31T00:07:29.01 1.0 undecidable manual P 243 36.3414 50 0.14 23
IV.ASQU.HHZ. 2022-01-31T00:07:29.68 1.0 undecidable manual P 146 41.625 50 -0.01 24
IV.FIR.HHZ. 2022-01-31T00:07:29.66 1.0 undecidable manual P 208 41.625 50 -0.02 23
IV.SFI.HNZ. 2022-01-31T00:07:28.94 1.0 undecidable manual P 129 35.9418 50 0.14 23
IV.LMD.HHZ. 2022-01-31T00:07:28.42 0.6 undecidable manual S 101 17.1717 121 -0.23 48
IV.FNVD.HHE. 2022-01-31T00:07:27.99 1.0 undecidable manual P 283 30.4473 50 0.03 24
IV.BRIS.HHZ. 2022-01-31T00:07:27.42 0.6 undecidable manual P 59 25.1526 50 0.27 46
IV.MOCL.EHZ. 2022-01-31T00:07:27.46 0.6 positive manual P 246 27.5502 50 -0.05 48
IV.RUFI.EHZ. 2022-01-31T00:07:27.50 1.0 undecidable manual P 178 29.8479 50 -0.37 22
IV.SEI.HHZ. 2022-01-31T00:07:27.31 0.3 undecidable manual S 242 12.3765 129 0.02 74
IV.BOSL.HHN. 2022-01-31T00:07:26.54 0.1 undecidable manual P 206 21.867 115 -0.01 98
IV.MTRZ.HNE. 2022-01-31T00:07:26.97 1.0 undecidable manual P 346 23.4543 113 0.11 24
IV.VISG.HHZ. 2022-01-31T00:07:26.64 0.6 undecidable manual S 332 10.2786 135 -0.11 49
IV.LMD.HHZ. 2022-01-31T00:07:25.71 0.6 undecidable manual P 101 17.1717 121 -0.02 50
IV.VISG.HHZ. 2022-01-31T00:07:24.60 0.1 positive manual P 332 10.2786 135 -0.03 100
IV.SEI.HHZ. 2022-01-31T00:07:24.88 0.1 positive manual P 242 12.3765 129 -0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:0.2 0.000019307995000000002 0.06 AML other m 2022-01-31T00:07:26.91
IV.VISG.HHN. ML:0.4 0.000029987635 0.1 AML other m 2022-01-31T00:07:26.88
IV.SEI.HHN. ML:1.3 0.000237 0.16 AML other m 2022-01-31T00:07:27.49
IV.SEI.HHE. ML:0.9 0.000087043285 0.26 AML other m 2022-01-31T00:07:27.74
IV.MOCL.EHE. ML:0.6 0.000020720928 0.1 AML other m 2022-01-31T00:07:32.01
IV.MOCL.EHN. ML:0.6 0.00001954277 0.28 AML other m 2022-01-31T00:07:31.80
IV.FIR.HNE. ML:1.6 0.00012185971499999999 0.11 AML other m 2022-01-31T00:07:38.25
IV.FIR.HNN. ML:1.6 0.0001229948 0.19 AML other m 2022-01-31T00:07:41.18
IV.FIR.HHE. ML:1.6 0.000130727355 0.08 AML other m 2022-01-31T00:07:38.03
IV.FIR.HHN. ML:1.4 0.00009019890999999999 0.14 AML other m 2022-01-31T00:07:44.86
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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