Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.1 on date 31-07-2019 and time 17:15:38 (Italy) in region 3 km E Genga (AN)

A magnitude ML 1.1 (quarry blast) earthquake occured in region: 3 km E Genga (AN), on

  • 31-07-2019 15:15:38 (UTC)
  • 31-07-2019 17:15:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4310, 12.9750 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
Genga AN 3 1797 1797
Serra San Quirico AN 4 2850 4647
Mergo AN 7 1037 5684
Arcevia AN 8 4612 10296
Sassoferrato AN 9 7285 17581
Rosora AN 10 1985 19566
Poggio San Vicino MC 10 246 19812
Castelplanio AN 11 3540 23352
Cupramontana AN 12 4756 28108
Fabriano AN 12 31480 59588
Cerreto d'Esi AN 12 3817 63405
Poggio San Marcello AN 12 693 64098
Maiolati Spontini AN 13 6248 70346
Montecarotto AN 13 1987 72333
Apiro MC 13 2280 74613
Serra de' Conti AN 14 3746 78359
Monte Roberto AN 15 3061 81420
Castelbellino AN 15 4947 86367
San Paolo di Jesi AN 16 933 87300
Staffolo AN 17 2253 89553
Barbara AN 17 1368 90921
Serra Sant'Abbondio PU 18 1027 91948
Pergola PU 19 6333 98281
San Lorenzo in Campo PU 19 3414 101695
Matelica MC 20 9981 111676
Castelleone di Suasa AN 20 1676 113352
Esanatoglia MC 20 2034 115386

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km S of Fano (60888 inhabitants)
49 Km W of Ancona (100861 inhabitants)
54 Km S of Pesaro (94582 inhabitants)
57 Km NE of Foligno (57155 inhabitants)
60 Km NE of Perugia (166134 inhabitants)
78 Km SE of Rimini (147750 inhabitants)
88 Km E of Arezzo (99543 inhabitants)
98 Km SE of Cesena (96758 inhabitants)
100 Km N of Terni (111501 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 1.1 2019-07-31
15:15:38		 43.4307 12.975 1 2019-11-13
14:31:02		 Bollettino Sismico Italiano INGV 72357221
Reviewed
Rev100 		ML 1.2 2019-07-31
15:15:38		 43.4518 13.0115 7 2019-07-31
15:26:18		 Sala Sismica INGV-Roma 71064031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-31 15:15:38 ± 0.11
Latitude 43.4307 ± 0.0072
Longitude 12.9750 ± 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 72357221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 880
Semi-minor axis of confidence ellipse (meter) 640
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 880.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33545
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 72357221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-13 08:15:54

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 71064031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-31 15:26:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRJA.HHZ. 2019-07-31T15:17:48.60 3.0 undecidable manual Sn -9.99 0
IV.HPAC.HHZ. 2019-07-31T15:17:24.33 3.0 positive manual Pg 12.23 0
IV.AGLI.HHZ. 2019-07-31T15:17:23.63 3.0 undecidable manual Sg 6.86 0
IV.SPS2.HHZ. 2019-07-31T15:17:23.14 3.0 undecidable manual Sn -9.99 0
IT.ACQ.HGZ. 2019-07-31T15:17:22.09 3.0 undecidable manual Sn 2.83 0
IV.SCIAC.HHZ. 2019-07-31T15:17:01.88 3.0 negative manual Pg 2.82 0
IV.CRJA.HHZ. 2019-07-31T15:16:54.72 3.0 negative manual Pn -0.47 0
MN.TRI.HHZ. 2019-07-31T15:16:53.78 3.0 undecidable manual Sg 4.35 0
IV.CAR1.HNZ. 2019-07-31T15:16:52.73 3.0 undecidable manual Pg 9.37 0
IV.CET2.HHZ. 2019-07-31T15:16:43.40 3.0 undecidable manual Pg 4.66 0
IV.SARZ.HHZ. 2019-07-31T15:16:40.29 3.0 undecidable manual Pg 10.29 0
IT.GNV.HGZ. 2019-07-31T15:16:39.11 3.0 negative manual Pg 11.66 0
MN.PDG.HHZ. 2019-07-31T15:16:37.31 3.0 undecidable manual Pn -5.62 0
IV.TDS.HHZ. 2019-07-31T15:16:33.64 3.0 undecidable manual Pn -5.6 0
IV.ZONE.HHZ. 2019-07-31T15:16:23.38 3.0 undecidable manual Pn -4.75 0
IX.STN3.HHZ.02 2019-07-31T15:16:23.26 3.0 undecidable manual Pg -2.03 0
IV.PTRJ.HHZ. 2019-07-31T15:16:02.52 3.0 undecidable manual Pn -6.98 0
IV.IMOL.HNZ. 2019-07-31T15:16:01.42 3.0 positive manual Pn -1.82 0
IV.PIEI.HHZ. 2019-07-31T15:15:45.88 0.3 undecidable manual P 288 37.2294 91 -0.35 66
IV.MPAG.EHZ. 2019-07-31T15:15:44.20 0.3 undecidable manual P 322 28.0497 91 -0.18 69
IV.ASSB.HHZ. 2019-07-31T15:15:44.33 3.0 undecidable manual P 0.52 0
IV.FRON.EHZ. 2019-07-31T15:15:43.45 0.3 undecidable manual P 296 22.2555 91 0.22 70
IV.SNTG.HHZ. 2019-07-31T15:15:42.89 0.3 undecidable manual P 188 19.6692 91 0.19 70
IV.EL6.EHZ. 2019-07-31T15:15:41.68 0.3 undecidable manual P 138 15.1737 92 -0.13 72
IV.ARVD.HHZ. 2019-07-31T15:15:40.56 0.1 undecidable manual P 340 7.9809 94 0.2 95
IV.GAVE.EHZ. 2019-07-31T15:15:40.84 3.0 undecidable manual P -5.29 0
IV.MMUR.HNZ. 2019-07-31T15:15:39.19 0.1 undecidable manual P 55 2.1978 103 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EL6.EHN. ML:1.2 0.000168545903 0.448 AML other m 2019-07-31T15:15:49.45
IV.EL6.EHE. ML:1.3 0.00021666279999999998 1.1808 AML other m 2019-07-31T15:15:50.69
IV.PIEI.HHE. ML:1.0 0.000033404195 0.1152 AML other m 2019-07-31T15:15:53.00
IV.SNTG.HHE. ML:0.9 0.00007245526500000001 0.64 AML other m 2019-07-31T15:15:54.65
IV.SNTG.HNE. ML:1.2 0.00012027865000000002 0.7808 AML other m 2019-07-31T15:15:55.65
IV.SNTG.HHN. ML:1.2 0.0001280123 1.0016 AML other m 2019-07-31T15:15:55.41
IV.FRON.EHE. ML:0.9 0.0000604 0.66 AML other m 2019-07-31T15:15:55.44
IV.PIEI.HHN. ML:0.6 0.000017226144999999997 0.2688 AML other m 2019-07-31T15:15:55.72
IV.SNTG.HNN. ML:1.3 0.0001708934 0.8704 AML other m 2019-07-31T15:15:58.65
IV.FRON.EHN. ML:1.2 0.0001026 0.8 AML other m 2019-07-31T15:15:58.52
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