Earthquake with magnitude of ML 1.7 on date 04-07-2006 and time 19:41:04 (Italy) in region 4 km SE Chiusdino (SI)

A magnitude ML 1.7 earthquake occured in region: 4 km SE Chiusdino (SI), on

  • 04-07-2006 17:41:04 (UTC)
  • 04-07-2006 19:41:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1300, 11.1250 at 5 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Chiusdino SI 4 1903 1903
Monticiano SI 5 1571 3474
Montieri GR 9 1204 4678
Roccastrada GR 14 9199 13877
Radicondoli SI 16 914 14791
Sovicille SI 19 10116 24907
Castelnuovo di Val di Cecina PI 20 2231 27138
Civitella Paganico GR 20 3154 30292

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Siena (53903 inhabitants)
41 Km N of Grosseto (82087 inhabitants)
70 Km S of Scandicci (50609 inhabitants)
72 Km SW of Arezzo (99543 inhabitants)
72 Km S of Firenze (382808 inhabitants)
81 Km SE of Livorno (159219 inhabitants)
84 Km S of Prato (191150 inhabitants)
88 Km SE of Pisa (89158 inhabitants)
91 Km S of Pistoia (90315 inhabitants)
94 Km SE of Lucca (89046 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 2.3
ML 1.7
2006-07-04
17:41:04
43.13 11.125 5 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 578049
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-07-04 17:41:04 ± 0.21
Latitude 43.1300 ± 0.0126
Longitude 11.1250 ± 0.0173
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 578049

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1579
Semi-minor axis of confidence ellipse (meter) 1158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 1979.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.75
Epicentral distance of station closest to the epicenter (degree) 0.11062
Epicentral distance of station farthest from the epicenter (degree) 1.01893
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 578049
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:04:54

Md:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 578049
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:04:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PZZT.HHN. 2006-07-04T17:41:39.08 0.3 undecidable manual Sg 349 113.0979 0.102 32
IV.PZZT.HHN. 2006-07-04T17:41:24.81 0.1 undecidable manual Pg 349 113.0979 0.2 84
IV.VMG.SHZ. 2006-07-04T17:41:23.00 0.1 undecidable manual Pg 20 98.2239 0.681 76
IV.CRE.EHZ. 2006-07-04T17:41:21.04 0.1 undecidable manual Pg 51 85.9473 0.614 80
IV.PII.SHZ. 2006-07-04T17:41:19.64 0.1 undecidable manual Pg 324 81.5517 -0.108 92
IV.ARCI.HHZ. 2006-07-04T17:41:18.92 0.1 undecidable manual Sg 137 41.9247 -0.712 42
IV.CSNT.BHE. 2006-07-04T17:41:17.62 0.3 undecidable manual Sg 19 40.3263 -1.47 22
IV.ARCI.HHZ. 2006-07-04T17:41:13.50 0.1 undecidable manual Pg 137 41.9247 0.059 100
IV.CSNT.BHE. 2006-07-04T17:41:12.51 0.1 undecidable manual Pg 19 40.3263 -0.616 87
IV.GRFL.SHZ. 2006-07-04T17:41:08.87 0.1 undecidable manual Sg 279 12.2766 -0.703 44
IV.GRFL.SHZ. 2006-07-04T17:41:07.92 0.1 negative manual Pg 279 12.2766 0.289 100
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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