Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.4 on date 11-01-2023 and time 13:37:35 (UTC) in region 3 km SW Gubbio (PG)

A magnitude ML 0.4 (quarry blast) earthquake occured in region: 3 km SW Gubbio (PG), on

  • 11-01-2023 13:37:35 (UTC)
  • 11-01-2023 14:37:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3310, 12.5660 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Gubbio PG 3 32216 32216
Scheggia e Pascelupo PG 12 1393 33609
Costacciaro PG 12 1216 34825
Sigillo PG 14 2404 37229
Pietralunga PG 16 2111 39340
Fossato di Vico PG 16 2840 42180
Cantiano PU 17 2245 44425
Valfabbrica PG 19 3389 47814
Umbertide PG 20 16681 64495
Montone PG 20 1680 66175

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Perugia (166134 inhabitants)
43 Km N of Foligno (57155 inhabitants)
57 Km E of Arezzo (99543 inhabitants)
68 Km SW of Fano (60888 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
81 Km S of Rimini (147750 inhabitants)
83 Km W of Ancona (100861 inhabitants)
86 Km N of Terni (111501 inhabitants)
93 Km S of Cesena (96758 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 0.4 2023-01-11
13:37:35		 43.3308 12.5662 1 2024-03-01
17:18:13		 Bollettino Sismico Italiano INGV 119369551
Reviewed
Rev100 		ML 0.6 2023-01-11
13:37:35		 43.3655 12.555 5 2023-01-11
14:04:59		 Sala Sismica INGV-Roma 113474561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-11 13:37:35 ± 0.44
Latitude 43.3308 ± 0.0243
Longitude 12.5662 ± 0.0173
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 119369551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2860
Semi-minor axis of confidence ellipse (meter) 1020
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 340
Circular confidence region, given by single value of horizontal uncertainty (meter) 2860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 219
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.03597
Epicentral distance of station farthest from the epicenter (degree) 0.21943
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 119369551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-07-18 15:27:49

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 113474561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-11 14:04:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2023-01-11T13:37:39.50 0.6 undecidable manual P 354 22.8549 91 -0.12 49
IV.FRON.EHZ. 2023-01-11T13:37:39.48 0.3 undecidable manual P 32 24.3534 91 -0.45 68
IV.ATPC.HHE. 2023-01-11T13:37:39.92 0.3 undecidable manual P 332 18.7701 92 1.11 52
IV.ATPI.HNZ. 2023-01-11T13:37:38.44 0.3 undecidable manual P 315 18.7701 92 -0.35 70
IV.TB03.DHZ.01 2023-01-11T13:37:37.78 0.3 undecidable manual P 302 14.7741 92 -0.22 72
IV.ATSC.EHZ. 2023-01-11T13:37:37.94 0.1 undecidable manual P 43 14.1747 92 0.06 100
IV.ATVO.HHZ. 2023-01-11T13:37:37.73 0.1 undecidable manual P 294 14.0748 92 -0.13 99
IV.ATLO.EHZ. 2023-01-11T13:37:37.92 0.3 undecidable manual P 262 12.9759 92 0.29 72
IV.TB01.DHZ.01 2023-01-11T13:37:37.41 0.3 undecidable manual P 298 11.9769 92 -0.02 76
IV.TSM2.DHZ.01 2023-01-11T13:37:36.70 0.3 undecidable manual P 320 9.4794 93 -0.25 73
IV.ATFO.HHZ. 2023-01-11T13:37:36.10 0.1 undecidable manual P 6 3.996 97 0.26 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:0.2 0.00002070066 0.1408 AML other m 2023-01-11T13:37:40.07
IV.ATVO.HHN. ML:0.1 0.000013207844500000001 0.1408 AML other m 2023-01-11T13:37:40.18
IV.MURB.HHN. ML:0.7 0.00007297727499999999 0.16 AML other m 2023-01-11T13:37:40.38
IV.MURB.HHE. ML:0.7 0.00007334754 0.2176 AML other m 2023-01-11T13:37:40.57
IV.PIEI.HHN. ML:0.3 0.000015533585000000002 0.2048 AML other m 2023-01-11T13:37:42.83
IV.PIEI.HHE. ML:0.4 0.000020495269999999998 1.84 AML other m 2023-01-11T13:37:43.05
IV.FRON.EHE. ML:0.4 0.000013106929999999999 0.1152 AML other m 2023-01-11T13:37:43.00
IV.FRON.EHN. ML:0.5 0.000019532719 0.0768 AML other m 2023-01-11T13:37:43.75
IV.FDMO.HHN. ML:0.8 0.000015746634000000002 0.0832 AML other m 2023-01-11T13:37:50.12
IV.FDMO.HHE. ML:0.8 0.000014032015 0.0832 AML other m 2023-01-11T13:37:50.19
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