Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.5 on date 09-09-2021 and time 08:54:34 (Italy) in region 4 km S Cagli (PU)

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

  • 09-09-2021 06:54:34 (UTC)
  • 09-09-2021 08:54:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5110, 12.6530 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 7 1300 12276
Serra Sant'Abbondio PU 10 1027 13303
Scheggia e Pascelupo PG 12 1393 14696
Acqualagna PU 12 4393 19089
Piobbico PU 14 2029 21118
Pergola PU 16 6333 27451
Costacciaro PG 18 1216 28667
Gubbio PG 18 32216 60883
Fermignano PU 19 8596 69479
Sassoferrato AN 19 7285 76764
Pietralunga PG 19 2111 78875
Apecchio PU 20 1882 80757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Fano (60888 inhabitants)
49 Km SW of Pesaro (94582 inhabitants)
50 Km NE of Perugia (166134 inhabitants)
62 Km S of Rimini (147750 inhabitants)
62 Km N of Foligno (57155 inhabitants)
62 Km E of Arezzo (99543 inhabitants)
71 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 0.5 2021-09-09
06:54:34		 43.511 12.6527 1 2022-03-30
13:04:39		 Bollettino Sismico Italiano INGV 101398951
Reviewed
Rev100 		ML 0.5 2021-09-09
06:54:34		 43.5098 12.6622 6 2021-09-09
07:01:31		 Sala Sismica INGV-Roma 95224011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-09 06:54:34 ± 0.06
Latitude 43.5110 ± 0.0045
Longitude 12.6527 ± 0.0050
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 101398951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 490
Semi-minor axis of confidence ellipse (meter) 330
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 334
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.22033
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 101398951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-24 02:32:58

ML:0.5

Field Value
Value 0.5
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 95224011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-09 07:01:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.MGRO.HHZ. 2021-09-09T06:56:31.27 3.0 undecidable manual Sg 12.87 0
IX.SCL3.EHZ.02 2021-09-09T06:56:27.87 3.0 undecidable manual Sg 11.77 0
IV.ILOS.HHZ. 2021-09-09T06:56:13.64 3.0 negative manual Pg 15.76 0
IV.CRTO.HHZ. 2021-09-09T06:56:08.30 3.0 undecidable manual Sg 5 0
IV.CADC.HNZ. 2021-09-09T06:56:02.27 3.0 undecidable manual Sg 6.44 0
IV.VENT.EHZ. 2021-09-09T06:56:00.44 3.0 undecidable manual Sg 2.1 0
GU.MGRO.HHZ. 2021-09-09T06:55:44.13 3.0 positive manual Pg 10.23 0
IV.QLNO.HHZ. 2021-09-09T06:55:34.43 3.0 positive manual Pg 5.14 0
IV.MTMR.EHZ. 2021-09-09T06:55:27.95 3.0 undecidable manual Pg 0.84 0
IV.VBKN.HHZ. 2021-09-09T06:55:27.84 3.0 negative manual Pg 2.49 0
IV.VOBA.EHZ. 2021-09-09T06:55:24.73 3.0 negative manual Pg 3.97 0
IV.TOLF.HHZ. 2021-09-09T06:55:05.76 3.0 undecidable manual P -0.11 0
IV.PP3.EHZ. 2021-09-09T06:55:00.36 3.0 undecidable manual S -2.12 0
IV.ATVO.HHZ. 2021-09-09T06:54:39.64 0.3 undecidable manual P 234 24.4533 91 -0.08 74
IV.ARVD.HHZ. 2021-09-09T06:54:39.33 0.3 undecidable manual P 93 23.2545 91 -0.16 73
IV.MPAG.EHZ. 2021-09-09T06:54:38.03 0.1 undecidable manual P 33 15.6732 92 0.07 100
IV.ATFO.HHZ. 2021-09-09T06:54:38.40 0.3 undecidable manual P 202 17.2716 92 0.11 74
IV.ATPC.HNZ. 2021-09-09T06:54:38.15 0.1 undecidable manual P 258 16.0728 92 0.1 99
IV.ATPI.EHZ. 2021-09-09T06:54:38.94 0.3 undecidable manual P 252 21.2676 91 -0.14 73
IV.NARO.HHZ. 2021-09-09T06:54:37.12 0.3 undecidable manual P 332 12.4764 92 -0.21 73
IV.ATSC.EHZ. 2021-09-09T06:54:36.68 0.1 undecidable manual P 164 9.9789 93 -0.15 99
IV.FRON.EHZ. 2021-09-09T06:54:36.19 0.1 positive manual P 83 5.8941 95 0.18 99
IV.ATBU.HNZ. 2021-09-09T06:54:36.84 0.1 undecidable manual P 245 9.2796 93 0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MPAG.EHN. ML:0.1 0.000012513333500000001 0.7808 AML other m 2021-09-09T06:54:37.69
IV.MPAG.HNN. ML:1.4 0.0002900099 1.4784 AML other m 2021-09-09T06:54:38.21
IV.ATPI.HNN. ML:1.0 0.000086414465 0.6624 AML other m 2021-09-09T06:54:39.15
IV.MPAG.HNE. ML:1.4 0.00031671079999999994 0.5408 AML other m 2021-09-09T06:54:39.18
IV.NARO.HHE. ML:0.1 0.000017969085 0.16 AML other m 2021-09-09T06:54:40.40
IV.NARO.HHN. ML:0.0 0.000016186075000000002 0.08 AML other m 2021-09-09T06:54:40.96
IV.MPAG.EHE. ML:0.2 0.000021429575 0.3424 AML other m 2021-09-09T06:54:41.20
IV.ATFO.HHN. ML:0.5 0.000037438525 0.24 AML other m 2021-09-09T06:54:41.87
IV.ATFO.HHE. ML:0.8 0.00007055000000000001 0.78 AML other m 2021-09-09T06:54:42.53
IV.ATPI.EHN. ML:0.4 0.000018278855 0.5408 AML other m 2021-09-09T06:54:43.93
IV.ATPI.EHE. ML:0.5 0.000026729990000000003 1.3792 AML other m 2021-09-09T06:54:43.78
IV.ATPI.HNE. ML:1.1 0.00009402077 0.6496 AML other m 2021-09-09T06:54:44.67
IV.ARVD.HHN. ML:0.2 0.000010300790499999999 0.1184 AML other m 2021-09-09T06:54:44.88
IV.ARVD.HHE. ML:0.2 0.0000087345525 0.08 AML other m 2021-09-09T06:54:44.93
IV.ATVO.HHN. ML:0.6 0.000025668644999999997 0.7008 AML other m 2021-09-09T06:54:45.44
IV.ATVO.HHE. ML:0.6 0.00002718978 0.8608 AML other m 2021-09-09T06:54:50.57
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