Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 16-08-2006 and time 21:17:25 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude ML 2.2 earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 16-08-2006 19:17:25 (UTC)
  • 16-08-2006 21:17:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.7700, 10.1670 at 1 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
Viareggio LU 13 62467 62467
Vecchiano PI 18 12189 74656
Massarosa LU 18 22471 97127
Pisa PI 20 89158 186285

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Viareggio (62467 inhabitants)
20 Km W of Pisa (89158 inhabitants)
27 Km NW of Livorno (159219 inhabitants)
28 Km W of Lucca (89046 inhabitants)
30 Km S of Massa (69479 inhabitants)
35 Km S of Carrara (63133 inhabitants)
46 Km SE of La Spezia (93959 inhabitants)
63 Km W of Pistoia (90315 inhabitants)
76 Km W of Prato (191150 inhabitants)
82 Km W of Scandicci (50609 inhabitants)
88 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 		Md 2.5
ML 2.2 		2006-08-16
19:17:25		 43.77 10.167 1 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 586779
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-08-16 19:17:25 ± 0.18
Latitude 43.7700 ± 0.0099
Longitude 10.1670 ± 0.0149
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 586779

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1316
Semi-minor axis of confidence ellipse (meter) 1000
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
Circular confidence region, given by single value of horizontal uncertainty (meter) 1627.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.67
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.21858
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 586779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:14:00

Md:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 586779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:14:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.DOI.SHZ. 2006-08-16T19:18:06.48 10.0 undecidable manual Pg 0 0 0
IV.SFI.SHZ. 2006-08-16T19:18:05.84 0.1 undecidable manual Sg 83 135.2646 -0.124 40
IV.SEI.SHZ. 2006-08-16T19:17:57.01 0.1 undecidable manual Sg 71 100.3218 0.364 41
IV.ZCCA.SHZ. 2006-08-16T19:17:57.31 10.0 undecidable manual Sg 0 0 0
IV.FIN.SHZ. 2006-08-16T19:17:54.79 10.0 undecidable manual Pg 0 0 0
IV.CRE.SHZ. 2006-08-16T19:17:51.18 10.0 undecidable manual Pg 0 0 0
IV.GSCL.SHZ. 2006-08-16T19:17:49.85 0.1 undecidable manual Sg 27 72.6717 0.59 40
IV.SFI.SHZ. 2006-08-16T19:17:49.10 0.1 undecidable manual Pg 83 135.2646 0.352 76
IV.BOB.HHE. 2006-08-16T19:17:47.69 0.1 undecidable manual Pg 333 124.5864 0.573 73
IV.PZZT.HHN. 2006-08-16T19:17:46.51 0.1 undecidable manual Sg 54 68.4759 -1.634 24
IV.SEI.SHZ. 2006-08-16T19:17:44.27 0.1 undecidable manual Pg 71 100.3218 0.908 67
IV.GRFL.SHZ. 2006-08-16T19:17:43.64 0.1 undecidable manual Pg 136 94.8384 1.11 62
IV.ZCCA.SHZ. 2006-08-16T19:17:43.43 10.0 undecidable manual Pg 0 0 0
IV.CSNT.BHZ. 2006-08-16T19:17:42.35 0.1 undecidable manual Pg 110 96.0261 -0.349 83
IV.FNVD.HHZ. 2006-08-16T19:17:41.35 0.1 undecidable manual Pg 60 88.1451 -0.143 87
IV.ERBM.SHZ. 2006-08-16T19:17:39.37 0.1 positive manual Pg 15 74.6697 -0.052 91
IV.GROG.HHN. 2006-08-16T19:17:39.85 0.1 undecidable manual Sg 210 44.0226 -0.667 41
IV.GSCL.SHZ. 2006-08-16T19:17:38.81 0.1 undecidable manual Pg 27 72.6717 -0.291 87
IV.PZZT.HHN. 2006-08-16T19:17:37.81 0.1 undecidable manual Pg 54 68.4759 -0.645 80
MN.VLC.HHE. 2006-08-16T19:17:34.11 0.1 undecidable manual Pg 22 46.62 -0.459 88
IV.PII.SHZ. 2006-08-16T19:17:34.95 0.1 undecidable manual Sg 100 29.1486 -0.396 46
IV.BDI.HHZ. 2006-08-16T19:17:34.94 0.1 undecidable manual Pg 46 47.2194 0.239 93
IV.GROG.HHN. 2006-08-16T19:17:33.98 0.1 undecidable manual Pg 210 44.0226 -0.079 96
IV.PII.SHZ. 2006-08-16T19:17:31.09 0.1 negative manual Pg 100 29.1486 0.023 100
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