Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.7 on date 07-07-2021 and time 09:16:14 (UTC) in region 3 km E Piobbico (PU)

A magnitude ML 0.7 (quarry blast) earthquake occured in region: 3 km E Piobbico (PU), on

  • 07-07-2021 09:16:14 (UTC)
  • 07-07-2021 11:16:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5940, 12.5420 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 3 2029 2029
Urbania PU 9 7099 9128
Cagli PU 10 8731 17859
Apecchio PU 11 1882 19741
Acqualagna PU 11 4393 24134
Peglio PU 12 696 24830
Fermignano PU 13 8596 33426
Sant'Angelo in Vado PU 13 4133 37559
Cantiano PU 15 2245 39804
Urbino PU 17 15019 54823
Lunano PU 17 1527 56350
Mercatello sul Metauro PU 18 1378 57728
Piandimeleto PU 18 2167 59895
Frontone PU 18 1300 61195
Pietralunga PG 19 2111 63306
Belforte all'Isauro PU 19 769 64075

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km SW of Pesaro (94582 inhabitants)
47 Km SW of Fano (60888 inhabitants)
52 Km S of Rimini (147750 inhabitants)
55 Km E of Arezzo (99543 inhabitants)
56 Km N of Perugia (166134 inhabitants)
65 Km SE of Cesena (96758 inhabitants)
72 Km N of Foligno (57155 inhabitants)
79 Km W of Ancona (100861 inhabitants)
81 Km SE of Forlì (117913 inhabitants)
93 Km SE of Faenza (58541 inhabitants)
96 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 0.7 2021-07-07
09:16:14		 43.5943 12.5423 1 2021-12-29
11:12:29		 Bollettino Sismico Italiano INGV 95332391
Reviewed
Rev100 		ML 0.7 2021-07-07
09:16:14		 43.5913 12.5508 4 2021-07-07
09:21:45		 Sala Sismica INGV-Roma 92348731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-07 09:16:14 ± 0.16
Latitude 43.5943 ± 0.0090
Longitude 12.5423 ± 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 95332391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1050
Semi-minor axis of confidence ellipse (meter) 700
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 350
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 153
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.23472
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 95332391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-12 07:42:29

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 92348731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-07 09:21:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2021-07-07T09:16:19.33 0.3 undecidable manual P 132 26.0517 91 -0.39 68
IV.ATVO.HHZ. 2021-07-07T09:16:19.76 0.3 undecidable manual P 205 25.9518 91 0.06 72
IV.ATFO.HHZ. 2021-07-07T09:16:19.43 0.3 undecidable manual P 175 25.3524 91 -0.15 71
IV.PARC.HHZ. 2021-07-07T09:16:19.65 0.6 undecidable manual P 284 25.1526 91 0.12 48
IV.MPAG.EHZ. 2021-07-07T09:16:18.25 0.3 undecidable manual P 77 17.871 92 0.17 72
IV.ATBU.EHE. 2021-07-07T09:16:17.32 0.1 undecidable manual P 178 13.1757 92 0.18 96
IV.FRON.EHZ. 2021-07-07T09:16:17.93 0.3 undecidable manual P 120 16.9719 92 0.02 74
IV.ATPC.HNE. 2021-07-07T09:16:17.70 0.1 undecidable manual P 209 14.3745 92 0.32 93
IV.APEC.HHZ. 2021-07-07T09:16:16.19 0.3 undecidable manual P 248 10.5783 93 -0.43 69
IV.PIEI.HHZ. 2021-07-07T09:16:15.75 0.1 positive manual P 185 6.5934 94 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:0.9 0.0000499 0.26 AML other m 2021-07-07T09:16:19.63
IV.SSFR.HHE. ML:0.8 0.000038400000000000005 0.26 AML other m 2021-07-07T09:16:23.82
IV.PARC.HHN. ML:0.7 0.000030449999999999998 0.24 AML other m 2021-07-07T09:16:24.22
IV.PARC.HHE. ML:0.4 0.000015649999999999998 0.76 AML other m 2021-07-07T09:16:24.66
IV.ATVO.HHN. ML:0.7 0.00002815 1.14 AML other m 2021-07-07T09:16:26.39
IV.FRON.EHE. ML:0.7 0.00005115 0.96 AML other m 2021-07-07T09:16:26.48
IV.FRON.EHN. ML:0.7 0.00005300000000000001 1.16 AML other m 2021-07-07T09:16:26.06
IV.ATFO.HHE. ML:0.7 0.00003255 0.8 AML other m 2021-07-07T09:16:26.73
IV.ATFO.HHN. ML:0.7 0.0000346 0.46 AML other m 2021-07-07T09:16:28.40
IV.ATVO.HHE. ML:0.5 0.0000223 0.8 AML other m 2021-07-07T09:16:31.48
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