Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.8 on date 27-12-2021 and time 10:47:24 (UTC) in region 3 km SW Serra San Quirico (AN)

A magnitude ML 0.8 (quarry blast) earthquake occured in region: 3 km SW Serra San Quirico (AN), on

  • 27-12-2021 10:47:24 (UTC)
  • 27-12-2021 11:47:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4340, 12.9910 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
Serra San Quirico AN 3 2850 2850
Genga AN 5 1797 4647
Mergo AN 6 1037 5684
Rosora AN 8 1985 7669
Arcevia AN 9 4612 12281
Poggio San Vicino MC 10 246 12527
Castelplanio AN 10 3540 16067
Cupramontana AN 10 4756 20823
Sassoferrato AN 11 7285 28108
Poggio San Marcello AN 11 693 28801
Maiolati Spontini AN 12 6248 35049
Montecarotto AN 12 1987 37036
Apiro MC 12 2280 39316
Cerreto d'Esi AN 13 3817 43133
Serra de' Conti AN 13 3746 46879
Fabriano AN 13 31480 78359
Monte Roberto AN 13 3061 81420
Castelbellino AN 14 4947 86367
San Paolo di Jesi AN 15 933 87300
Staffolo AN 16 2253 89553
Barbara AN 17 1368 90921
Serra Sant'Abbondio PU 19 1027 91948
Pergola PU 19 6333 98281
San Lorenzo in Campo PU 19 3414 101695
Castelleone di Suasa AN 19 1676 103371
Cingoli MC 19 10352 113723
Matelica MC 20 9981 123704
Ostra Vetere AN 20 3311 127015

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km S of Fano (60888 inhabitants)
47 Km W of Ancona (100861 inhabitants)
53 Km S of Pesaro (94582 inhabitants)
58 Km NE of Foligno (57155 inhabitants)
61 Km NE of Perugia (166134 inhabitants)
78 Km SE of Rimini (147750 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
99 Km SE 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 0.8 2021-12-27
10:47:24		 43.4337 12.9913 1 2022-03-30
13:04:33		 Bollettino Sismico Italiano INGV 100412121
Reviewed
Rev100 		ML 0.8 2021-12-27
10:47:24		 43.4378 12.9957 1 2021-12-27
10:55:29		 Sala Sismica INGV-Roma 99052401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-27 10:47:24 ± 0.11
Latitude 43.4337 ± 0.0072
Longitude 12.9913 ± 0.0099
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 100412121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 940
Semi-minor axis of confidence ellipse (meter) 690
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 40
Circular confidence region, given by single value of horizontal uncertainty (meter) 940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37951
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 12
Type of magnitude ML
Reference to an origin 100412121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-31 18:11:04

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 12
Type of magnitude ML
Reference to an origin 99052401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-27 10:55:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2021-12-27T10:47:59.16 3.0 undecidable manual S -0.31 0
IV.MURB.HHZ. 2021-12-27T10:47:33.59 0.3 undecidable manual P 243 42.1245 91 0.78 58
IV.CSP1.EHZ. 2021-12-27T10:47:33.23 3.0 undecidable manual P 0.31 0
IV.PIEI.HHZ. 2021-12-27T10:47:31.51 0.1 undecidable manual P 287 38.4282 91 -0.56 85
IV.MPAG.EHZ. 2021-12-27T10:47:30.16 0.3 undecidable manual P 319 28.6491 91 0.06 72
IV.FRON.EHZ. 2021-12-27T10:47:29.06 0.3 undecidable manual P 294 23.3544 91 0.01 74
IV.SNTG.HHZ. 2021-12-27T10:47:28.35 0.1 undecidable manual P 192 20.2686 91 -0.07 98
IV.SSFR.HHZ. 2021-12-27T10:47:27.72 0.3 undecidable manual P 271 16.872 92 -0.03 74
IV.CING.HHZ. 2021-12-27T10:47:27.91 0.1 undecidable manual P 111 17.6712 92 0 99
IV.EL6.EHZ. 2021-12-27T10:47:27.13 0.3 undecidable manual P 142 14.5743 92 -0.16 73
IV.ARVD.HHZ. 2021-12-27T10:47:26.07 0.1 undecidable manual P 331 8.1807 93 0.06 100
IV.MMUR.HNZ. 2021-12-27T10:47:24.72 0.1 positive manual P 27 0.999 116 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CING.HHN. ML:0.6 0.00004 1.48 AML other m 2021-12-27T10:47:31.92
IV.CING.HHE. ML:0.6 0.00003755 0.64 AML other m 2021-12-27T10:47:31.87
IV.SNTG.HHN. ML:0.8 0.00004825 0.16 AML other m 2021-12-27T10:47:32.60
IV.SSFR.HHN. ML:0.9 0.00008724999999999999 0.86 AML other m 2021-12-27T10:47:33.17
IV.FRON.EHN. ML:0.8 0.0000461 0.52 AML other m 2021-12-27T10:47:34.02
IV.SSFR.HHE. ML:1.0 0.00009915 0.84 AML other m 2021-12-27T10:47:34.42
IV.SNTG.HHE. ML:0.7 0.000038 1.4 AML other m 2021-12-27T10:47:36.06
IV.FRON.EHE. ML:0.8 0.000044 0.96 AML other m 2021-12-27T10:47:37.17
IV.PIEI.HHE. ML:0.8 0.000023094999999999998 0.42 AML other m 2021-12-27T10:47:40.17
IV.PIEI.HHN. ML:0.7 0.00001875 0.42 AML other m 2021-12-27T10:47:40.63
IV.MPAG.EHN. ML:0.7 0.00003229999999999999 1 AML other m 2021-12-27T10:47:43.39
IV.MPAG.EHE. ML:0.7 0.000026050000000000003 0.98 AML other m 2021-12-27T10:47:44.50
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