Earthquake with magnitude of ML 0.3 on date 17-09-2007 and time 02:39:02 (UTC) in region 1 km W Piancastagnaio (SI)

A magnitude ML 0.3 earthquake occured in region: 1 km W Piancastagnaio (SI), on

  • 17-09-2007 02:39:02 (UTC)
  • 17-09-2007 04:39:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8490, 11.6770 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Piancastagnaio SI 1 4230 4230
Abbadia San Salvatore SI 4 6444 10674
Santa Fiora GR 8 2622 13296
Castell'Azzara GR 9 1476 14772
Radicofani SI 9 1097 15869
Arcidosso GR 12 4285 20154
Castel del Piano GR 12 4690 24844
Seggiano GR 13 961 25805
Roccalbegna GR 15 1044 26849
Proceno VT 16 557 27406
San Casciano dei Bagni SI 17 1632 29038
Semproniano GR 17 1059 30097
Castiglione d'Orcia SI 18 2346 32443
Sorano GR 19 3428 35871
Acquapendente VT 19 5506 41377

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km E of Grosseto (82087 inhabitants)
59 Km SE of Siena (53903 inhabitants)
59 Km NW of Viterbo (67173 inhabitants)
65 Km W of Perugia (166134 inhabitants)
71 Km S of Arezzo (99543 inhabitants)
85 Km W of Foligno (57155 inhabitants)
85 Km N of Civitavecchia (52991 inhabitants)
86 Km W of Terni (111501 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 1.5
ML 0.3
2007-09-17
02:39:02
42.849 11.677 1 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 652529
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2007-09-17 02:39:02 ± 0.12
Latitude 42.8490 ± 0.0081
Longitude 11.6770 ± 0.0049
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 652529

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1000
Semi-minor axis of confidence ellipse (meter) 474
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 187
Circular confidence region, given by single value of horizontal uncertainty (meter) 984.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 179
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.14839
Epicentral distance of station farthest from the epicenter (degree) 0.25271
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 652529
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 12:23:53

Md:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 652529
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 12:23:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LATE.HHE. 2007-09-17T02:39:12.39 0.6 undecidable manual Sg 158 28.0497 -0.111 50
IV.SACS.HHE. 2007-09-17T02:39:09.10 0.3 undecidable manual Sg 90 18.87 -0.229 74
IV.LATE.HHE. 2007-09-17T02:39:08.48 0.1 undecidable manual Pg 158 28.0497 0.092 100
IV.ARCI.HHZ. 2007-09-17T02:39:08.40 0.3 undecidable manual Sg 271 16.4724 -0.08 77
IV.ARCI.HHZ. 2007-09-17T02:39:06.07 0.3 undecidable manual Pg 271 16.4724 0.003 78
IV.SACS.HHE. 2007-09-17T02:39:06.75 0.1 undecidable manual Pg 90 18.87 0.192 100
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