Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.0 on date 04-04-2019 and time 11:11:54 (Italy) in region 4 km SW Borgo a Mozzano (LU)

A magnitude ML 1.0 (quarry blast) earthquake occured in region: 4 km SW Borgo a Mozzano (LU), on

  • 04-04-2019 09:11:54 (UTC)
  • 04-04-2019 11:11:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9520, 10.5210 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
Borgo a Mozzano LU 4 6994 6994
Bagni di Lucca LU 9 6161 13155
Pescaglia LU 9 3526 16681
Villa Basilica LU 10 1633 18314
Lucca LU 12 89046 107360
Capannori LU 12 46252 153612
Coreglia Antelminelli LU 13 5215 158827
Gallicano LU 14 3807 162634
Barga LU 14 10034 172668
Pescia PT 15 19644 192312
Porcari LU 15 8845 201157
Molazzana LU 16 1043 202200
Fabbriche di Vergemoli LU 16 768 202968
Montecarlo LU 16 4428 207396
Massarosa LU 17 22471 229867
Uzzano PT 17 5770 235637
Camaiore LU 17 32513 268150
Buggiano PT 18 8825 276975
Massa e Cozzile PT 19 7983 284958
Stazzema LU 19 3193 288151
Fosciandora LU 19 602 288753
Altopascio LU 20 15481 304234
Castelnuovo di Garfagnana LU 20 5950 310184

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Lucca (89046 inhabitants)
24 Km E of Viareggio (62467 inhabitants)
28 Km NE of Pisa (89158 inhabitants)
32 Km E of Massa (69479 inhabitants)
32 Km W of Pistoia (90315 inhabitants)
37 Km E of Carrara (63133 inhabitants)
47 Km W of Prato (191150 inhabitants)
47 Km NE of Livorno (159219 inhabitants)
57 Km W of Scandicci (50609 inhabitants)
58 Km E of La Spezia (93959 inhabitants)
62 Km W of Firenze (382808 inhabitants)
84 Km S of Reggio nell'Emilia (171345 inhabitants)
84 Km SW of Modena (184973 inhabitants)
89 Km SW of Bologna (386663 inhabitants)
96 Km S of Parma (192836 inhabitants)
96 Km NW of Siena (53903 inhabitants)
97 Km SW of Carpi (70699 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 1.0 2019-04-04
09:11:54		 43.9515 10.5207 1 2019-08-22
08:25:12		 Bollettino Sismico Italiano INGV 71107491
Reviewed
Rev100 		ML 1.0 2019-04-04
09:11:53		 43.9517 10.5282 9 2019-04-04
09:25:23		 Sala Sismica INGV-Roma 67242141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-04 09:11:54 ± 0.13
Latitude 43.9515 ± 0.0072
Longitude 10.5207 ± 0.0125
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 71107491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1050
Semi-minor axis of confidence ellipse (meter) 720
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
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) 130
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 7
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36512
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 67242141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-04 09:25:23

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 71107491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-02 09:59:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2019-04-04T09:13:52.60 3.0 undecidable manual Pg 20.23 0
IV.CMDO.HHZ. 2019-04-04T09:13:49.23 3.0 undecidable manual Pg 14.22 0
IV.VAGA.HHZ. 2019-04-04T09:13:48.21 3.0 undecidable manual Sg 13.09 0
MN.BNI.HHZ. 2019-04-04T09:13:34.59 3.0 undecidable manual Sg 17 0
IV.LRP.EHZ. 2019-04-04T09:13:29.56 3.0 undecidable manual Sg 6.81 0
IV.MRVN.HHZ. 2019-04-04T09:13:26.43 3.0 undecidable manual Pg 16.98 0
MN.TRI.HHZ. 2019-04-04T09:13:12.71 3.0 undecidable manual Sn -2.38 0
IV.AGLI.HHZ. 2019-04-04T09:13:11.54 3.0 undecidable manual Sn -6.15 0
IV.GIGS.HHZ. 2019-04-04T09:13:06.49 3.0 undecidable manual Sn -3.1 0
IV.CSFT.HHZ. 2019-04-04T09:13:06.37 3.0 undecidable manual Pg 10.37 0
IV.MILN.HNZ. 2019-04-04T09:12:53.16 3.0 undecidable manual Sg 4.52 0
OX.VARN.HHZ. 2019-04-04T09:12:34.19 3.0 undecidable manual Pg 2.41 0
IV.RIBO.EHZ.01 2019-04-04T09:12:29.98 3.0 undecidable manual S -0.37 0
IV.SENI.EHZ. 2019-04-04T09:12:28.30 3.0 positive manual Pn 1.64 0
IV.VENL.HNZ. 2019-04-04T09:12:26.84 3.0 negative manual Pn 0.02 0
IV.CRMI.HHE. 2019-04-04T09:12:02.00 0.3 undecidable manual P 115 40.5261 91 -0.2 95
GU.EQUI.HHE. 2019-04-04T09:12:01.46 0.3 undecidable manual P 309 37.7289 91 -0.17 96
MN.VLC.HHZ. 2019-04-04T09:11:59.41 0.3 undecidable manual P 335 25.4523 91 0.25 96
GU.SARM.EHN. 2019-04-04T09:11:59.31 0.3 undecidable manual P 340 27.5502 91 -0.27 95
IV.PII.HHZ. 2019-04-04T09:11:59.35 0.3 undecidable manual P 179 25.4523 91 0.18 98
GU.POPM.HHZ. 2019-04-04T09:11:58.28 0.3 undecidable manual P 61 21.5673 91 -0.1 100
IV.BDI.HHZ. 2019-04-04T09:11:57.14 0.3 undecidable manual P 26 13.6752 92 0.32 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BDI.HHE. ML:0.6 0.000055549280000000006 0.384 AML other m 2019-04-04T09:11:59.29
IV.BDI.HHN. ML:0.7 0.000068949595 0.2816 AML other m 2019-04-04T09:12:00.47
IV.BDI.HNE. ML:0.9 0.00010086506 1.5904 AML other m 2019-04-04T09:12:00.92
GU.POPM.HHE. ML:1.1 0.00010096138999999998 0.1792 AML other m 2019-04-04T09:12:01.95
IV.PII.HHE. ML:1.2 0.00009560182 0.3392 AML other m 2019-04-04T09:12:02.78
GU.POPM.HHN. ML:1.1 0.000099356585 0.224 AML other m 2019-04-04T09:12:02.75
IV.PII.HHN. ML:1.0 0.00006035748 0.2432 AML other m 2019-04-04T09:12:03.76
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