Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 31-01-2023 and time 11:48:19 (UTC) in region 6 km S Serra Sant'Abbondio (PU)

A magnitude ML 0.7 earthquake occured in region: 6 km S Serra Sant'Abbondio (PU), on

  • 31-01-2023 11:48:19 (UTC)
  • 31-01-2023 12:48:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4420, 12.7870 at 11 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
Serra Sant'Abbondio PU 6 1027 1027
Sassoferrato AN 6 7285 8312
Frontone PU 9 1300 9612
Scheggia e Pascelupo PG 10 1393 11005
Costacciaro PG 11 1216 12221
Genga AN 12 1797 14018
Sigillo PG 13 2404 16422
Cantiano PU 13 2245 18667
Arcevia AN 14 4612 23279
Pergola PU 14 6333 29612
Fabriano AN 15 31480 61092
Cagli PU 16 8731 69823
Fossato di Vico PG 16 2840 72663
Serra San Quirico AN 19 2850 75513
Gubbio PG 19 32216 107729

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km SW of Fano (60888 inhabitants)
49 Km NE of Perugia (166134 inhabitants)
53 Km S of Pesaro (94582 inhabitants)
54 Km N of Foligno (57155 inhabitants)
62 Km W of Ancona (100861 inhabitants)
71 Km S of Rimini (147750 inhabitants)
73 Km E of Arezzo (99543 inhabitants)
89 Km SE of Cesena (96758 inhabitants)
99 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
Reviewed
Rev100 		ML 0.7 2023-01-31
11:48:19		 43.4418 12.7873 11 2023-01-31
13:03:13		 Sala Sismica INGV-Roma 113935381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-31 11:48:19 ± 0.11
Latitude 43.4418 ± 0.0036
Longitude 12.7873 ± 0.0074
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 113935381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 630
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 303
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
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) 0.00719
Epicentral distance of station farthest from the epicenter (degree) 0.46315
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 113935381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-31 13:03:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2023-01-31T11:48:35.83 0.3 undecidable manual S 139 51.4152 90 0.36 65
IV.NARO.HHZ. 2023-01-31T11:48:29.11 0.3 undecidable manual S 318 25.0527 90 0.68 61
IV.MURB.HHE. 2023-01-31T11:48:29.73 0.3 undecidable manual S 227 29.0487 90 0.24 68
IV.CSP1.EHZ. 2023-01-31T11:48:28.40 0.6 undecidable manual P 139 51.4152 90 -0.23 44
IV.ATPC.HHZ. 2023-01-31T11:48:28.97 0.3 undecidable manual S 279 26.9508 90 0.04 72
IV.MPAG.EHZ. 2023-01-31T11:48:27.32 0.3 undecidable manual S 354 20.868 90 0 73
IV.PIEI.HHZ. 2023-01-31T11:48:27.33 0.3 undecidable manual S 297 22.8549 90 -0.5 66
IV.MURB.HHE. 2023-01-31T11:48:25.44 0.6 undecidable manual P 227 29.0487 90 0.27 46
IV.FOSV.EHZ. 2023-01-31T11:48:25.93 0.3 undecidable manual S 187 16.4724 90 -0.2 72
IV.ATSC.EHE. 2023-01-31T11:48:24.17 0.3 undecidable manual S 256 8.3805 128 0.07 74
IV.ATPC.HHZ. 2023-01-31T11:48:24.62 0.6 undecidable manual P 279 26.9508 90 -0.23 46
IV.NARO.HHZ. 2023-01-31T11:48:24.12 0.1 undecidable manual P 318 25.0527 90 -0.44 89
IV.FRON.EHZ. 2023-01-31T11:48:24.65 0.3 undecidable manual S 329 9.7791 121 0.24 72
IV.PIEI.HHZ. 2023-01-31T11:48:23.83 0.6 positive manual P 297 22.8549 90 -0.39 45
IV.FOSV.EHZ. 2023-01-31T11:48:23.01 0.1 undecidable manual P 187 16.4724 90 -0.22 95
IV.SSFR.HHZ. 2023-01-31T11:48:23.68 0.3 undecidable manual S 213 0.7992 175 0.54 68
IV.MPAG.EHZ. 2023-01-31T11:48:23.77 0.6 negative manual P 354 20.868 90 -0.15 47
IV.FRON.EHZ. 2023-01-31T11:48:22.30 1.0 undecidable manual P 329 9.7791 121 0.06 25
IV.ATSC.EHE. 2023-01-31T11:48:22.07 0.1 undecidable manual P 256 8.3805 128 0.01 100
IV.SSFR.HHZ. 2023-01-31T11:48:21.84 0.6 undecidable manual P 213 0.7992 175 0.33 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:1.4 0.00041099999999999996 0.16 AML other m 2023-01-31T11:48:24.10
IV.SSFR.HHE. ML:1.2 0.000258 0.2 AML other m 2023-01-31T11:48:24.24
IV.SSFR.HNE. ML:1.3 0.00031076024999999996 0.1344 AML other m 2023-01-31T11:48:24.27
IV.SSFR.HNN. ML:1.5 0.000518637 0.2048 AML other m 2023-01-31T11:48:23.85
IV.FRON.EHE. ML:0.4 0.000029688179999999997 0.1792 AML other m 2023-01-31T11:48:24.67
IV.FRON.EHN. ML:0.3 0.000025845945 0.0768 AML other m 2023-01-31T11:48:27.44
IV.FOSV.EHE. ML:0.4 0.000021657333500000002 0.1216 AML other m 2023-01-31T11:48:26.00
IV.FOSV.EHN. ML:0.6 0.0000297582 0.1216 AML other m 2023-01-31T11:48:26.01
IV.MPAG.EHE. ML:0.8 0.000041939037500000005 0.1344 AML other m 2023-01-31T11:48:27.49
IV.MPAG.EHN. ML:0.6 0.000026886269999999998 0.1216 AML other m 2023-01-31T11:48:27.54
IV.PIEI.HHE. ML:0.9 0.000048212605 0.1024 AML other m 2023-01-31T11:48:27.60
IV.PIEI.HHN. ML:0.5 0.0000193067145 0.1408 AML other m 2023-01-31T11:48:27.45
IV.NARO.HHE. ML:0.6 0.000025921989 0.064 AML other m 2023-01-31T11:48:29.39
IV.NARO.HHN. ML:0.5 0.000019213809999999996 0.064 AML other m 2023-01-31T11:48:29.69
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