Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.5 on date 25-02-2023 and time 11:58:57 (UTC) in region 4 km E Piobbico (PU)

A magnitude ML 0.5 (quarry blast) earthquake occured in region: 4 km E Piobbico (PU), on

  • 25-02-2023 11:58:57 (UTC)
  • 25-02-2023 12:58:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5870, 12.5610 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
Piobbico PU 4 2029 2029
Cagli PU 8 8731 10760
Acqualagna PU 10 4393 15153
Urbania PU 10 7099 22252
Apecchio PU 12 1882 24134
Fermignano PU 12 8596 32730
Peglio PU 13 696 33426
Cantiano PU 14 2245 35671
Sant'Angelo in Vado PU 15 4133 39804
Frontone PU 16 1300 41104
Urbino PU 17 15019 56123
Lunano PU 19 1527 57650
Pietralunga PG 19 2111 59761
Mercatello sul Metauro PU 19 1378 61139
Piandimeleto PU 19 2167 63306
Serra Sant'Abbondio PU 20 1027 64333

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km SW of Pesaro (94582 inhabitants)
47 Km SW of Fano (60888 inhabitants)
53 Km S of Rimini (147750 inhabitants)
55 Km N of Perugia (166134 inhabitants)
56 Km E of Arezzo (99543 inhabitants)
66 Km SE of Cesena (96758 inhabitants)
71 Km N of Foligno (57155 inhabitants)
77 Km W of Ancona (100861 inhabitants)
82 Km SE of Forlì (117913 inhabitants)
95 Km SE of Faenza (58541 inhabitants)
97 Km SE of Ravenna (159116 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 0.5 2023-02-25
11:58:57		 43.5867 12.5613 1 2024-03-01
17:18:17		 Bollettino Sismico Italiano INGV 122868721
Reviewed
Rev100 		ML 0.8 2023-02-25
11:58:56		 43.6098 12.5823 12 2023-02-25
12:09:31		 Sala Sismica INGV-Roma 114796491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-25 11:58:57 ± 0.16
Latitude 43.5867 ± 0.0090
Longitude 12.5613 ± 0.0149
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 122868721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1280
Semi-minor axis of confidence ellipse (meter) 970
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 296
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.02788
Epicentral distance of station farthest from the epicenter (degree) 0.29318
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 114796491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-25 12:09:31

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 122868721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-11-07 01:34:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATLO.EHE. 2023-02-25T11:59:03.57 0.1 undecidable manual P 202 32.5452 91 -0.62 83
IV.TB01.DHZ.01 2023-02-25T11:59:02.48 0.1 undecidable manual P 204 24.8529 91 -0.18 95
IV.PARC.HHZ. 2023-02-25T11:59:02.39 0.1 undecidable manual P 285 26.8509 91 -0.65 83
IV.TB03.DHZ.01 2023-02-25T11:59:02.35 0.1 undecidable manual P 211 23.8539 91 -0.1 96
IV.TSM2.DHE. 2023-02-25T11:59:01.92 0.1 undecidable manual P 195 21.867 91 -0.13 96
IV.ATPI.HNZ. 2023-02-25T11:59:01.72 0.1 undecidable manual P 220 19.7691 91 0.09 97
IV.ATSC.EHE. 2023-02-25T11:59:01.49 0.1 undecidable manual P 151 20.6682 91 -0.32 92
IV.FRON.EHZ. 2023-02-25T11:59:00.59 0.1 undecidable manual P 120 15.2736 92 -0.14 97
IV.ATPC.HNN. 2023-02-25T11:59:00.98 0.1 undecidable manual P 216 14.4744 92 0.42 92
IV.MPAG.EHN. 2023-02-25T11:59:00.54 0.1 undecidable manual P 73 16.5723 92 -0.46 90
IV.ATBU.EHN. 2023-02-25T11:59:00.74 0.1 undecidable manual P 185 12.3765 92 0.59 87
IV.PE3.EHZ. 2023-02-25T11:59:00.32 0.1 positive manual P 337 13.1757 92 0 100
IV.PIEI.HNE. 2023-02-25T11:58:59.69 0.1 undecidable manual P 201 6.0939 95 0.81 81
IV.NARO.HHZ. 2023-02-25T11:58:59.14 0.1 undecidable manual P 30 3.0969 99 0.85 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PE3.EHN. ML:0.8 0.00007924414 0.1408 AML other m 2023-02-25T11:59:03.06
IV.FRON.EHN. ML:0.5 0.00004220152 0.0576 AML other m 2023-02-25T11:59:04.44
IV.FRON.EHE. ML:0.3 0.000026082545 0.064 AML other m 2023-02-25T11:59:04.71
IV.PE3.EHE. ML:0.7 0.00007631894000000001 0.2368 AML other m 2023-02-25T11:59:04.68
IV.PARC.HHN. ML:0.4 0.0000153917955 1.904 AML other m 2023-02-25T11:59:06.00
IV.PARC.HHE. ML:0.4 0.000014365820000000002 0.2176 AML other m 2023-02-25T11:59:09.53
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