Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 31-01-2023 and time 11:11:11 (Italy) in region 7 km W Sassoferrato (AN)

A magnitude ML 2.2 earthquake occured in region: 7 km W Sassoferrato (AN), on

  • 31-01-2023 10:11:11 (UTC)
  • 31-01-2023 11:11:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4290, 12.7770 at 11 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
Sassoferrato AN 7 7285 7285
Serra Sant'Abbondio PU 7 1027 8312
Scheggia e Pascelupo PG 9 1393 9705
Costacciaro PG 9 1216 10921
Frontone PU 10 1300 12221
Sigillo PG 11 2404 14625
Genga AN 13 1797 16422
Cantiano PU 13 2245 18667
Fabriano AN 15 31480 50147
Fossato di Vico PG 15 2840 52987
Arcevia AN 16 4612 57599
Pergola PU 16 6333 63932
Cagli PU 17 8731 72663
Gubbio PG 18 32216 104879
Serra San Quirico AN 19 2850 107729

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NE of Perugia (166134 inhabitants)
50 Km SW of Fano (60888 inhabitants)
53 Km N of Foligno (57155 inhabitants)
55 Km S of Pesaro (94582 inhabitants)
64 Km W of Ancona (100861 inhabitants)
72 Km E of Arezzo (99543 inhabitants)
72 Km S of Rimini (147750 inhabitants)
90 Km SE of Cesena (96758 inhabitants)
97 Km N of Terni (111501 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 2.2 2023-01-31
10:11:11		 43.4287 12.7767 11 2024-03-01
17:17:56		 Bollettino Sismico Italiano INGV 114855701
Reviewed
Rev100 		ML 2.2 2023-01-31
10:11:11		 43.4303 12.7748 11 2023-01-31
10:40:04		 Sala Sismica INGV-Roma 113933151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-31 10:11:11 ± 0.05
Latitude 43.4287 ± 0.0027
Longitude 12.7767 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114855701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 357
Semi-minor axis of confidence ellipse (meter) 175
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 25
Number of associated phases, regardless of their use for origin computation 63
Number of defining phases 61
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.89572
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 66
Type of magnitude ML
Reference to an origin 114855701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-02-27 13:46:39

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 78
Type of magnitude ML
Reference to an origin 113933151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-31 10:40:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BARO.EHZ. 2023-01-31T10:11:51.62 3.0 undecidable manual S -0.15 0
IV.BDI.HHZ. 2023-01-31T10:11:39.65 3.0 undecidable manual Pn 0.14 0
IV.MC2.EHZ. 2023-01-31T10:11:32.12 0.3 undecidable manual S 150 66.378 50 0.92 52
IV.PARC.HHZ. 2023-01-31T10:11:27.26 0.3 undecidable manual S 300 49.7169 50 0.52 64
IV.SMA1.EHZ. 2023-01-31T10:11:27.64 0.3 undecidable manual P 153 99.4227 50 -0.12 63
IV.FDMO.HHZ. 2023-01-31T10:11:27.22 0.3 undecidable manual S 150 50.2164 50 0.33 67
IV.CSP1.EHZ. 2023-01-31T10:11:27.61 0.3 undecidable manual S 137 50.9157 50 0.54 63
IV.LNSS.HHZ. 2023-01-31T10:11:26.66 0.3 undecidable manual P 167 94.0392 50 -0.27 62
IV.SFI.EHZ. 2023-01-31T10:11:26.51 0.3 undecidable manual P 306 91.4418 50 -0.01 66
IV.PE3.EHZ. 2023-01-31T10:11:24.30 0.3 undecidable manual S 323 37.2294 50 0.87 56
IV.MF5.EHZ. 2023-01-31T10:11:24.30 0.3 undecidable manual P 131 73.7706 50 0.5 61
IV.CRTC.HNE. 2023-01-31T10:11:24.30 0.3 undecidable manual S 13 38.628 50 0.5 66
IV.MGAB.HHZ. 2023-01-31T10:11:24.17 0.6 undecidable manual P 223 78.5658 50 -0.37 42
IV.NRCA.HHZ. 2023-01-31T10:11:23.11 0.3 undecidable manual P 157 71.4729 50 -0.34 64
IV.CRE.HHZ. 2023-01-31T10:11:23.09 0.3 undecidable manual P 288 69.6747 50 -0.08 68
IV.CAFI.HHZ. 2023-01-31T10:11:23.31 0.3 undecidable manual P 261 66.2781 50 0.66 58
IV.GUMA.HHZ. 2023-01-31T10:11:22.01 0.1 undecidable manual P 132 60.6948 50 0.22 89
IV.CING.HHZ. 2023-01-31T10:11:22.82 0.6 undecidable manual S 100 34.2435 50 0.19 47
IV.MC2.EHZ. 2023-01-31T10:11:22.50 0.1 undecidable manual P 150 66.378 50 -0.16 89
IV.ATPI.EHZ. 2023-01-31T10:11:21.60 0.6 undecidable manual S 275 30.2475 50 0.04 49
IV.ATVO.HHZ. 2023-01-31T10:11:21.27 0.3 undecidable manual S 260 30.2475 50 -0.29 70
IV.CPGN.EHZ. 2023-01-31T10:11:21.37 0.1 undecidable manual P 319 55.2003 50 0.43 86
IV.ATCC.EHZ. 2023-01-31T10:11:21.67 0.3 undecidable manual S 202 29.1486 50 0.4 68
IV.MURB.HHZ. 2023-01-31T10:11:21.25 0.6 undecidable manual S 228 27.4503 50 0.45 45
IV.CSP1.EHZ. 2023-01-31T10:11:20.13 0.1 undecidable manual P 137 50.9157 50 -0.15 92
IV.ATPC.HNZ. 2023-01-31T10:11:20.50 0.6 undecidable manual S 283 26.3514 50 -0.03 49
IV.NARO.HHZ. 2023-01-31T10:11:20.83 0.3 undecidable manual S 322 25.6521 50 0.5 67
IV.CESI.HHZ. 2023-01-31T10:11:19.47 0.1 undecidable manual P 168 48.1185 50 -0.38 88
IV.SNTG.HHZ. 2023-01-31T10:11:19.69 0.6 undecidable manual S 145 23.3544 50 -0.03 50
IV.PIEI.HHZ. 2023-01-31T10:11:19.01 0.6 undecidable manual S 301 22.755 50 -0.56 44
IV.PARC.HHZ. 2023-01-31T10:11:19.77 0.1 undecidable manual P 300 49.7169 50 -0.32 89
IV.MPAG.HNZ. 2023-01-31T10:11:19.03 0.3 undecidable manual S 356 22.2555 50 -0.4 69
IV.FDMO.HHZ. 2023-01-31T10:11:19.83 0.1 undecidable manual P 150 50.2164 50 -0.35 88
IV.MMUR.HNZ. 2023-01-31T10:11:18.33 0.6 undecidable manual S 85 17.871 50 0.08 49
IV.ATFO.HHZ. 2023-01-31T10:11:18.30 0.3 undecidable manual S 247 17.871 50 0.04 75
IV.CRTC.HNE. 2023-01-31T10:11:18.29 0.1 undecidable manual P 13 38.628 50 -0.1 95
IV.FCOR.HNE. 2023-01-31T10:11:17.88 0.3 undecidable manual P 5 37.9287 50 -0.4 67
IV.CING.HHZ. 2023-01-31T10:11:17.61 0.1 undecidable manual P 100 34.2435 50 -0.1 96
IV.ARVD.HHZ. 2023-01-31T10:11:17.36 0.3 undecidable manual S 60 15.3735 126 -0.18 73
IV.PE3.EHZ. 2023-01-31T10:11:17.99 0.1 undecidable manual P 323 37.2294 50 -0.19 94
IV.FOSV.EHZ. 2023-01-31T10:11:17.46 0.6 undecidable manual S 185 14.874 126 0.04 50
IV.COR1.EHZ. 2023-01-31T10:11:17.15 0.1 undecidable manual P 39 28.8489 50 0.27 93
IV.MURB.HHZ. 2023-01-31T10:11:16.62 0.1 positive manual P 228 27.4503 50 -0.04 98
IV.NARO.HHZ. 2023-01-31T10:11:16.85 0.1 negative manual P 322 25.6521 50 0.47 90
IV.FIU1.HNZ. 2023-01-31T10:11:16.71 0.3 undecidable manual P 155 29.4483 50 -0.26 70
IV.EL6.EHZ. 2023-01-31T10:11:16.70 0.1 undecidable manual P 113 28.4493 50 -0.12 97
IV.FRON.EHZ. 2023-01-31T10:11:16.30 0.6 undecidable manual S 337 10.6782 136 -0.01 51
IV.ATPI.EHZ. 2023-01-31T10:11:16.88 0.1 negative manual P 275 30.2475 50 -0.22 94
IV.ATVO.HHZ. 2023-01-31T10:11:16.94 0.1 undecidable manual P 260 30.2475 50 -0.16 95
IV.ATPC.HNZ. 2023-01-31T10:11:16.29 0.1 negative manual P 283 26.3514 50 -0.21 95
IV.ATCC.EHZ. 2023-01-31T10:11:16.84 0.1 positive manual P 202 29.1486 50 -0.09 97
IV.PIEI.HHZ. 2023-01-31T10:11:15.45 0.1 negative manual P 301 22.755 50 -0.5 90
IV.ATSC.EHZ. 2023-01-31T10:11:15.63 0.3 undecidable manual S 266 7.2927 146 0.06 76
IV.MPAG.HNZ. 2023-01-31T10:11:15.48 0.1 undecidable manual P 356 22.2555 50 -0.39 92
IV.MMUR.HNZ. 2023-01-31T10:11:15.02 0.3 undecidable manual P 85 17.871 50 -0.16 73
IV.SNTG.HHZ. 2023-01-31T10:11:15.81 0.1 undecidable manual P 145 23.3544 50 -0.23 95
IV.ATFO.HHZ. 2023-01-31T10:11:15.10 0.1 positive manual P 247 17.871 50 -0.09 99
IV.SSFR.HHZ. 2023-01-31T10:11:15.28 0.1 undecidable manual S 28 0.999 175 0.47 94
IV.ARVD.HHZ. 2023-01-31T10:11:14.64 0.1 positive manual P 60 15.3735 126 -0.14 98
IV.FOSV.EHZ. 2023-01-31T10:11:14.65 0.1 positive manual P 185 14.874 126 -0.06 100
IV.SSFR.HHZ. 2023-01-31T10:11:13.45 0.1 undecidable manual P 28 0.999 175 0.25 98
IV.ATSC.EHZ. 2023-01-31T10:11:13.76 0.1 undecidable manual P 266 7.2927 146 0.12 100
IV.FRON.EHZ. 2023-01-31T10:11:13.97 0.1 negative manual P 337 10.6782 136 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:2.2 0.001665 1.08 AML other m 2023-01-31T10:11:17.86
IV.ARVD.HHN. ML:2.1 0.0012345 0.08 AML other m 2023-01-31T10:11:17.76
IV.FRON.EHN. ML:2.2 0.001975 0.1 AML other m 2023-01-31T10:11:17.84
IV.ARVD.HHE. ML:2.2 0.0015249999999999999 0.08 AML other m 2023-01-31T10:11:17.81
IV.MMUR.HNN. ML:2.2 0.00141 0.26 AML other m 2023-01-31T10:11:18.46
IV.MMUR.HNE. ML:2.2 0.0013115000000000002 0.16 AML other m 2023-01-31T10:11:18.84
IV.PIEI.HNN. ML:2.2 0.000908 0.82 AML other m 2023-01-31T10:11:19.48
IV.PIEI.HHN. ML:2.1 0.0008795 0.8 AML other m 2023-01-31T10:11:19.48
IV.MPAG.EHN. ML:2.5 0.00215 0.16 AML other m 2023-01-31T10:11:19.22
IV.MPAG.EHE. ML:2.6 0.002355 0.32 AML other m 2023-01-31T10:11:19.17
IV.SNTG.HNE. ML:2.0 0.000617 1.08 AML other m 2023-01-31T10:11:19.31
IV.PIEI.HNE. ML:2.2 0.001145 0.88 AML other m 2023-01-31T10:11:19.87
IV.PIEI.HHE. ML:2.3 0.0012749999999999999 0.9 AML other m 2023-01-31T10:11:19.88
IV.ATFO.HNN. ML:2.3 0.001665 0.32 AML other m 2023-01-31T10:11:20.41
IV.ATFO.HHN. ML:2.3 0.0016799999999999999 0.32 AML other m 2023-01-31T10:11:20.42
IV.SNTG.HHN. ML:2.1 0.0008129999999999999 0.76 AML other m 2023-01-31T10:11:20.72
IV.SNTG.HNN. ML:2.1 0.0008269999999999999 0.24 AML other m 2023-01-31T10:11:20.73
IV.SNTG.HHE. ML:2.0 0.0005560000000000001 1.18 AML other m 2023-01-31T10:11:20.86
IV.NARO.HHE. ML:2.1 0.0007675 0.08 AML other m 2023-01-31T10:11:21.11
IV.ATFO.HHE. ML:2.3 0.001495 0.28 AML other m 2023-01-31T10:11:21.51
IV.ATFO.HNE. ML:2.3 0.001465 0.28 AML other m 2023-01-31T10:11:21.65
IV.ATVO.HHN. ML:2.6 0.0019100000000000002 0.28 AML other m 2023-01-31T10:11:21.63
IV.ATVO.HHE. ML:2.6 0.001825 0.24 AML other m 2023-01-31T10:11:21.73
IV.ATPI.HNN. ML:2.5 0.0015400000000000001 0.4 AML other m 2023-01-31T10:11:21.96
IV.ATPI.EHN. ML:2.5 0.0015350000000000001 0.38 AML other m 2023-01-31T10:11:21.96
IV.ATPI.HNE. ML:2.6 0.0019199999999999998 1.68 AML other m 2023-01-31T10:11:21.89
IV.ATPI.EHE. ML:2.6 0.0019100000000000002 1.68 AML other m 2023-01-31T10:11:21.90
IV.NARO.HHN. ML:2.2 0.0008285 1.32 AML other m 2023-01-31T10:11:22.02
IV.ATCC.EHE. ML:2.2 0.000865 0.14 AML other m 2023-01-31T10:11:22.01
IV.EL6.EHE. ML:2.0 0.0005565 0.44 AML other m 2023-01-31T10:11:22.32
IV.ATCC.EHN. ML:2.2 0.000846 0.5 AML other m 2023-01-31T10:11:22.50
IV.COR1.EHN. ML:2.4 0.0013050000000000002 0.82 AML other m 2023-01-31T10:11:23.02
IV.COR1.EHE. ML:2.2 0.0007574999999999999 1.64 AML other m 2023-01-31T10:11:23.07
IV.CING.HHN. ML:1.8 0.0002875 0.42 AML other m 2023-01-31T10:11:23.59
IV.CING.HHE. ML:1.8 0.000258 0.32 AML other m 2023-01-31T10:11:23.70
IV.EL6.EHN. ML:1.9 0.000438 0.46 AML other m 2023-01-31T10:11:24.21
IV.PE3.EHE. ML:2.3 0.000715 0.48 AML other m 2023-01-31T10:11:24.27
IV.CESI.HHE. ML:2.0 0.0002655 0.38 AML other m 2023-01-31T10:11:27.45
IV.FDMO.HHE. ML:2.0 0.0002825 0.34 AML other m 2023-01-31T10:11:27.61
IV.FDMO.HHN. ML:2.0 0.000247 0.66 AML other m 2023-01-31T10:11:27.94
IV.PE3.EHN. ML:2.2 0.0006605 0.84 AML other m 2023-01-31T10:11:28.14
IV.CSP1.EHE. ML:2.4 0.0006850000000000001 0.68 AML other m 2023-01-31T10:11:28.12
IV.PARC.HHN. ML:2.0 0.00028300000000000005 0.28 AML other m 2023-01-31T10:11:28.79
IV.CSP1.EHN. ML:2.6 0.000957 1.22 AML other m 2023-01-31T10:11:28.96
IV.PARC.HHE. ML:2.1 0.00034050000000000004 0.2 AML other m 2023-01-31T10:11:29.10
IV.CESI.HHN. ML:1.9 0.00022600000000000002 0.46 AML other m 2023-01-31T10:11:29.57
IV.CPGN.HNE. ML:2.1 0.000313 0.44 AML other m 2023-01-31T10:11:30.72
IV.CPGN.HNN. ML:2.3 0.0004385 1.14 AML other m 2023-01-31T10:11:31.64
IV.CPGN.EHN. ML:2.2 0.000325 0.98 AML other m 2023-01-31T10:11:31.10
IV.CPGN.EHE. ML:2.2 0.000395 0.52 AML other m 2023-01-31T10:11:31.69
IV.GUMA.HHN. ML:2.3 0.00037050000000000006 0.32 AML other m 2023-01-31T10:11:32.91
IV.GUMA.HNE. ML:2.3 0.000388 0.3 AML other m 2023-01-31T10:11:32.93
IV.MC2.EHE. ML:2.4 0.0004955 0.22 AML other m 2023-01-31T10:11:33.38
IV.CRE.HHE. ML:1.8 0.00009785 0.78 AML other m 2023-01-31T10:11:33.59
IV.GUMA.HHE. ML:2.4 0.0005015000000000001 0.42 AML other m 2023-01-31T10:11:34.43
IV.MC2.EHN. ML:2.6 0.000748 0.28 AML other m 2023-01-31T10:11:34.38
IV.NRCA.HHN. ML:2.1 0.000209 0.16 AML other m 2023-01-31T10:11:34.54
IV.CRE.HHN. ML:1.7 0.0000872 0.78 AML other m 2023-01-31T10:11:34.56
IV.CAFI.HHE. ML:1.8 0.00011149999999999999 1.36 AML other m 2023-01-31T10:11:34.14
IV.CAFI.HHN. ML:1.9 0.000128 0.48 AML other m 2023-01-31T10:11:35.03
IV.GUMA.HNN. ML:2.3 0.00040100000000000004 1.66 AML other m 2023-01-31T10:11:35.95
IV.NRCA.HHE. ML:2.0 0.00017449999999999999 0.14 AML other m 2023-01-31T10:11:35.44
IV.MGAB.HHN. ML:2.0 0.00013989999999999999 1.54 AML other m 2023-01-31T10:11:38.83
IV.MGAB.HHE. ML:1.9 0.00011265 1.26 AML other m 2023-01-31T10:11:41.94
IV.SMA1.EHN. ML:2.1 0.000127 1.2 AML other m 2023-01-31T10:11:43.87
IV.SMA1.EHE. ML:2.2 0.000143 1.3 AML other m 2023-01-31T10:11:51.77
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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