Earthquake (quarry blast) with magnitude of ML 1.0 on date 12-10-2017 and time 07:17:23 (UTC) in region 1 km S Borgo a Mozzano (LU)

A magnitude ML 1.0 (quarry blast) earthquake occured in region: 1 km S Borgo a Mozzano (LU), on

  • 12-10-2017 07:17:23 (UTC)
  • 12-10-2017 09:17:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.97, 10.55 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.

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 1 6994 6994
Bagni di Lucca LU 6 6161 13155
Villa Basilica LU 9 1633 14788
Pescaglia LU 11 3526 18314
Coreglia Antelminelli LU 11 5215 23529
Barga LU 13 10034 33563
Capannori LU 13 46252 79815
Pescia PT 13 19644 99459
Gallicano LU 14 3807 103266
Lucca LU 14 89046 192312
Porcari LU 15 8845 201157
Molazzana LU 16 1043 202200
Uzzano PT 16 5770 207970
Montecarlo LU 16 4428 212398
Fabbriche di Vergemoli LU 16 768 213166
Massa e Cozzile PT 17 7983 221149
Buggiano PT 17 8825 229974
Fosciandora LU 18 602 230576
Marliana PT 18 3210 233786
Piteglio PT 19 1683 235469
Castelnuovo di Garfagnana LU 19 5950 241419
Massarosa LU 20 22471 263890
Camaiore LU 20 32513 296403
Altopascio LU 20 15481 311884
Chiesina Uzzanese PT 20 4552 316436

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km N of Lucca (89046 inhabitants)
26 Km E of Viareggio (62467 inhabitants)
30 Km W of Pistoia (90315 inhabitants)
30 Km NE of Pisa (89158 inhabitants)
33 Km E of Massa (69479 inhabitants)
38 Km E of Carrara (63133 inhabitants)
45 Km W of Prato (191150 inhabitants)
50 Km NE of Livorno (159219 inhabitants)
56 Km W of Scandicci (50609 inhabitants)
60 Km E of La Spezia (93959 inhabitants)
61 Km W of Firenze (382808 inhabitants)
82 Km SW of Modena (184973 inhabitants)
82 Km S of Reggio nell'Emilia (171345 inhabitants)
86 Km SW of Bologna (386663 inhabitants)
95 Km S of Parma (192836 inhabitants)
95 Km SW of Carpi (70699 inhabitants)
96 Km NW of Siena (53903 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
Rev 1000 ML 1.0 2017-10-12
07:17:23
43.97 10.55 0 2018-09-04
09:08:02
Bollettino Sismico Italiano INGV 58858891
Rev 100 ML 1.2 2017-10-12
07:17:23
43.96 10.53 8 2017-10-12
07:22:00
Sala Sismica INGV-Roma 50908041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-10-12 07:17:23 ± 0.07
Latitude 43.97 ± 0.00
Longitude 10.55 ± 0.01
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 58858891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 570
Semi-minor axis of confidence ellipse (meter) 410
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 307
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.06565
Epicentral distance of station farthest from the epicenter (degree) 0.24102
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 58858891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-07-18 13:43:57

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 50908041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-10-12 07:22:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.SARM.EHZ. 2017-10-12T07:17:28.99 0.3 undecidable manual P 334 0.241 90 -0.1 71
GU.POPM.HHZ. 2017-10-12T07:17:27.43 0.1 undecidable manual P 63 0.17 90 -0.08 97
IV.BDI.HHZ. 2017-10-12T07:17:26.14 0.1 undecidable manual P 20 0.1025 91 0.14 97
GU.CARD.HHZ. 2017-10-12T07:17:25.40 0.1 undecidable manual P 322 0.0755 91 -0.01 100
GU.MAIM.HHZ. 2017-10-12T07:17:25.22 0.1 positive manual P 217 0.0657 91 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CARD.HHE. ML:0 0.0003485 0.34 AML other m 2017-10-12T07:17:27.77
GU.CARD.HHN. ML:0 0.000267 0.64 AML other m 2017-10-12T07:17:28.95
GU.POPM.HHN. ML:1.2 0.0001335 0.68 AML other m 2017-10-12T07:17:30.51
IV.BDI.HNN. ML:1.2 0.000255 1.06 AML other m 2017-10-12T07:17:31.07
GU.POPM.HHE. ML:1.1 0.0001125 1.18 AML other m 2017-10-12T07:17:31.86
IV.BDI.HHN. ML:0.8 0.00010515 1.28 AML other m 2017-10-12T07:17:31.97
IV.BDI.HNE. ML:1.2 0.000241 0.62 AML other m 2017-10-12T07:17:32.00
IV.BDI.HHE. ML:0.6 6.85E-5 0.6 AML other m 2017-10-12T07:17:32.01
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download