Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.8 on date 31-08-2022 and time 16:20:18 (UTC) in region 4 km SE Cagli (PU)

A magnitude ML 0.8 (quarry blast) earthquake occured in region: 4 km SE Cagli (PU), on

  • 31-08-2022 16:20:18 (UTC)
  • 31-08-2022 18:20:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5160, 12.6640 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
Cagli PU 4 8731 8731
Cantiano PU 5 2245 10976
Frontone PU 6 1300 12276
Serra Sant'Abbondio PU 9 1027 13303
Acqualagna PU 11 4393 17696
Scheggia e Pascelupo PG 12 1393 19089
Piobbico PU 15 2029 21118
Pergola PU 15 6333 27451
Costacciaro PG 18 1216 28667
Fermignano PU 18 8596 37263
Sassoferrato AN 18 7285 44548
Gubbio PG 19 32216 76764
Pietralunga PG 20 2111 78875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Fano (60888 inhabitants)
48 Km SW of Pesaro (94582 inhabitants)
51 Km NE of Perugia (166134 inhabitants)
61 Km S of Rimini (147750 inhabitants)
62 Km N of Foligno (57155 inhabitants)
63 Km E of Arezzo (99543 inhabitants)
70 Km W of Ancona (100861 inhabitants)
77 Km SE of Cesena (96758 inhabitants)
93 Km SE of Forlì (117913 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 0.8 2022-08-31
16:20:18		 43.5158 12.6638 1 2023-01-31
19:03:47		 Bollettino Sismico Italiano INGV 110010241
Reviewed
Rev100 		ML 0.7 2022-08-31
16:20:17		 43.5192 12.6773 15 2022-08-31
16:27:21		 Sala Sismica INGV-Roma 109183141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-31 16:20:18 ± 0.12
Latitude 43.5158 ± 0.0072
Longitude 12.6638 ± 0.0087
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 110010241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 860
Semi-minor axis of confidence ellipse (meter) 730
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 336
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
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) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.09263
Epicentral distance of station farthest from the epicenter (degree) 0.22933
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:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 109183141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-31 16:27:21

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 110010241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-09-22 15:05:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2022-08-31T16:20:22.44 0.3 undecidable manual P 95 22.4553 91 -0.15 72
IV.ATPI.EHZ. 2022-08-31T16:20:22.27 0.1 undecidable manual P 251 22.2555 91 -0.28 94
IV.ATVO.HHZ. 2022-08-31T16:20:22.90 0.3 undecidable manual P 234 25.4523 91 -0.3 70
IV.ATPC.HNZ. 2022-08-31T16:20:21.60 0.1 undecidable manual P 257 17.0718 92 0.08 98
IV.ATFO.HHZ. 2022-08-31T16:20:21.52 0.1 undecidable manual P 204 18.1707 92 -0.21 96
IV.TSM2.DHZ.01 2022-08-31T16:20:21.64 0.1 undecidable manual P 227 19.2696 91 -0.32 93
IV.MPAG.EHZ. 2022-08-31T16:20:20.97 0.1 undecidable manual P 31 14.7741 92 -0.08 99
IV.NARO.HHZ. 2022-08-31T16:20:20.71 0.1 undecidable manual P 328 12.4764 92 0.11 99
IV.ATBU.EHZ. 2022-08-31T16:20:20.84 0.1 undecidable manual P 244 10.2786 93 0.68 85
IV.ATSC.EHZ. 2022-08-31T16:20:20.53 0.1 undecidable manual P 170 10.3785 93 0.36 94
IV.SSFR.HHZ. 2022-08-31T16:20:20.74 0.1 undecidable manual P 133 12.9759 92 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:1.0 0.000141 0.16 AML other m 2022-08-31T16:20:23.71
IV.SSFR.HNN. ML:1.3 0.00031 1.32 AML other m 2022-08-31T16:20:23.05
IV.SSFR.HHE. ML:1.1 0.000187 1.72 AML other m 2022-08-31T16:20:23.10
IV.MPAG.EHN. ML:0.6 0.0000494 1.78 AML other m 2022-08-31T16:20:24.10
IV.MPAG.EHE. ML:0.8 0.00008104999999999999 1.18 AML other m 2022-08-31T16:20:24.98
IV.SSFR.HNE. ML:1.4 0.00034750000000000004 0.82 AML other m 2022-08-31T16:20:24.51
IV.ARVD.HHE. ML:0.5 0.0000251 0.12 AML other m 2022-08-31T16:20:25.94
IV.ARVD.HHN. ML:0.5 0.000024399999999999997 0.14 AML other m 2022-08-31T16:20:25.91
IV.ATVO.HHN. ML:0.5 0.00001935 1.74 AML other m 2022-08-31T16:20:26.08
IV.ATVO.HHE. ML:0.5 0.00001795 0.5 AML other m 2022-08-31T16:20:29.24
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