Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 20-08-2013 and time 20:50:54 (Italy) in region 3 km N Minucciano (LU)

A magnitude ML 1.4 earthquake occured in region: 3 km N Minucciano (LU), on

  • 20-08-2013 18:50:54 (UTC)
  • 20-08-2013 20:50:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1980, 10.2170 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Minucciano LU 3 2102 2102
Casola in Lunigiana MS 3 988 3090
Piazza al Serchio LU 7 2367 5457
Sillano Giuncugnano LU 7 1085 6542
Fivizzano MS 9 7925 14467
Camporgiano LU 10 2176 16643
Vagli Sotto LU 11 939 17582
San Romano in Garfagnana LU 11 1410 18992
Careggine LU 12 564 19556
Comano MS 13 714 20270
Villa Collemandina LU 15 1334 21604
Licciana Nardi MS 16 4949 26553
Carrara MS 16 63133 89686
Castiglione di Garfagnana LU 17 1818 91504
Pieve Fosciana LU 17 2414 93918
Fosdinovo MS 17 4883 98801
Castelnuovo di Garfagnana LU 18 5950 104751
Ortonovo SP 19 8277 113028
Massa MS 19 69479 182507
Castelnuovo Magra SP 19 8415 190922
Aulla MS 20 11263 202185

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Carrara (63133 inhabitants)
19 Km NE of Massa (69479 inhabitants)
33 Km E of La Spezia (93959 inhabitants)
37 Km N of Viareggio (62467 inhabitants)
45 Km NW of Lucca (89046 inhabitants)
56 Km N of Pisa (89158 inhabitants)
63 Km W of Pistoia (90315 inhabitants)
65 Km SW of Reggio nell'Emilia (171345 inhabitants)
68 Km S of Parma (192836 inhabitants)
72 Km N of Livorno (159219 inhabitants)
75 Km SW of Modena (184973 inhabitants)
79 Km W of Prato (191150 inhabitants)
84 Km SW of Carpi (70699 inhabitants)
91 Km NW of Scandicci (50609 inhabitants)
96 Km W of Bologna (386663 inhabitants)
96 Km W of Firenze (382808 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 1.4 2013-08-20
18:50:54		 44.1978 10.2167 11 2015-01-20
11:28:30		 Bollettino Sismico Italiano INGV 4734581
Reviewed
Rev100 		ML 1.4 2013-08-20
18:50:54		 44.2083 10.2225 9 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 4303381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-08-20 18:50:54 ± 0.08
Latitude 44.1978 ± 0.0045
Longitude 10.2167 ± 0.0063
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4734581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 516
Semi-minor axis of confidence ellipse (meter) 461
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 209
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41639
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 4303381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-08-20 18:59:28

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 4734581
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:25:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NDIM.HNZ. 2013-08-20T18:51:08.34 3.0 negative manual P -2.5 0
GU.POPM.HHZ. 2013-08-20T18:51:08.83 0.1 undecidable manual S 111 46.2204 50 -0.18 91
GU.MAIM.HHZ. 2013-08-20T18:51:06.75 0.1 undecidable manual S 145 38.3283 50 -0.15 93
GU.GRAM.HHZ. 2013-08-20T18:51:05.61 0.1 undecidable manual S 340 34.6431 50 -0.31 91
IV.PLMA.HHZ. 2013-08-20T18:51:05.24 0.1 undecidable manual S 241 33.2445 50 -0.3 91
IV.ERBM.EHZ. 2013-08-20T18:51:04.69 0.1 undecidable manual S 32 29.0487 50 0.26 93
GU.CARD.HHZ. 2013-08-20T18:51:03.92 0.1 undecidable manual S 132 28.4493 50 -0.34 91
GU.POPM.HHZ. 2013-08-20T18:51:02.89 0.1 undecidable manual P 111 46.2204 50 0.19 91
GU.MAIM.HHZ. 2013-08-20T18:51:01.96 0.1 undecidable manual P 145 38.3283 50 0.48 87
GU.GRAM.HHZ. 2013-08-20T18:51:00.80 0.1 undecidable manual P 340 34.6431 50 -0.12 94
GU.CARD.HHZ. 2013-08-20T18:51:00.28 0.1 undecidable manual P 132 28.4493 50 0.32 91
IV.T0911.EHZ. 2013-08-20T18:51:00.44 0.1 undecidable manual S 230 14.874 125 0.05 99
IV.PLMA.HHZ. 2013-08-20T18:51:00.98 0.1 undecidable manual P 241 33.2445 50 0.28 91
IV.ERBM.EHZ. 2013-08-20T18:51:00.08 0.1 undecidable manual P 32 29.0487 50 0.02 97
MN.VLC.HHZ. 2013-08-20T18:50:59.89 0.3 undecidable manual S 108 14.1747 127 -0.3 71
IV.T0911.EHZ. 2013-08-20T18:50:58.09 0.1 undecidable manual P 230 14.874 125 0.37 93
MN.VLC.HHZ. 2013-08-20T18:50:57.63 0.1 undecidable manual P 108 14.1747 127 0.02 100
GU.EQUI.HHZ. 2013-08-20T18:50:57.95 0.1 undecidable manual S 235 6.1938 149 -0.35 94
GU.EQUI.HHZ. 2013-08-20T18:50:56.59 0.1 undecidable manual P 235 6.1938 149 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.EQUI.HHN. ML:1.3 0.00031 0.56 AML other m 2013-08-20T18:50:58.46
GU.EQUI.HHE. ML:1.2 0.00023799999999999998 1.16 AML other m 2013-08-20T18:50:59.13
IV.ERBM.EHN. ML:1.4 0.00012090000000000001 0.7 AML other m 2013-08-20T18:51:05.61
IV.ERBM.EHE. ML:1.2 0.000089 0.5 AML other m 2013-08-20T18:51:06.70
GU.GRAM.HHN. ML:2.1 0.0005335 0.54 AML other m 2013-08-20T18:51:07.31
GU.GRAM.HHE. ML:2.1 0.000474 1.2 AML other m 2013-08-20T18:51:08.04
GU.MAIM.HHE. ML:1.2 0.000060100000000000004 0.42 AML other m 2013-08-20T18:51:07.19
GU.MAIM.HHN. ML:1.2 0.0000591 0.5 AML other m 2013-08-20T18:51:06.96
GU.POPM.HHN. ML:1.5 0.00008295 1.38 AML other m 2013-08-20T18:51:10.49
GU.POPM.HHE. ML:1.5 0.00009375 0.18 AML other m 2013-08-20T18:51:10.51
MN.VLC.HHE. ML:1.2 0.0001705 0.12 AML other m 2013-08-20T18:51:00.03
MN.VLC.HNE. ML:1.3 0.00017749999999999998 0.12 AML other m 2013-08-20T18:51:00.04
MN.VLC.HHN. ML:1.5 0.0003235 0.16 AML other m 2013-08-20T18:51:00.04
MN.VLC.HNN. ML:1.5 0.0003015 0.14 AML other m 2013-08-20T18:51:00.05
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