Earthquake with magnitude of ML 1.4 on date 08-10-2008 and time 07:55:29 (Italy) in region 5 km SW San Casciano dei Bagni (SI)

A magnitude ML 1.4 earthquake occured in region: 5 km SW San Casciano dei Bagni (SI), on

  • 08-10-2008 05:55:29 (UTC)
  • 08-10-2008 07:55:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8350, 11.8420 at 18 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
San Casciano dei Bagni SI 5 1632 1632
Proceno VT 9 557 2189
Radicofani SI 9 1097 3286
Acquapendente VT 10 5506 8792
Allerona TR 11 1794 10586
Piancastagnaio SI 12 4230 14816
Castell'Azzara GR 14 1476 16292
Abbadia San Salvatore SI 14 6444 22736
Fabro TR 14 2876 25612
Cetona SI 15 2755 28367
Castel Viscardo TR 16 2938 31305
Onano VT 16 995 32300
San Lorenzo Nuovo VT 17 2091 34391
Sarteano SI 17 4717 39108
Castel Giorgio TR 18 2131 41239
Grotte di Castro VT 18 2683 43922
Ficulle TR 18 1669 45591
Città della Pieve PG 19 7712 53303
Monteleone d'Orvieto TR 19 1467 54770
Sorano GR 20 3428 58198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km NW of Viterbo (67173 inhabitants)
54 Km SW of Perugia (166134 inhabitants)
60 Km E of Grosseto (82087 inhabitants)
68 Km SE of Siena (53903 inhabitants)
70 Km S of Arezzo (99543 inhabitants)
72 Km W of Foligno (57155 inhabitants)
73 Km W of Terni (111501 inhabitants)
83 Km N of Civitavecchia (52991 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 2.2
ML 1.4
2008-10-08
05:55:29
42.835 11.842 18 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 721449
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2008-10-08 05:55:29 ± 0.38
Latitude 42.8350 ± 0.0126
Longitude 11.8420 ± 0.0343
Depth (km) 18 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 721449

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3006
Semi-minor axis of confidence ellipse (meter) 838
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 296
Circular confidence region, given by single value of horizontal uncertainty (meter) 3130.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 241
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) 0.05126
Epicentral distance of station farthest from the epicenter (degree) 0.22303
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:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 721449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 13:39:08

Md:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 721449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 13:39:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGAB.HHZ. 2008-10-08T05:55:38.57 0.3 undecidable manual Sg 68 23.5542 0.148 72
IV.LATE.HHZ. 2008-10-08T05:55:38.64 0.3 undecidable manual Sg 187 24.753 -0.058 73
IV.MGAB.HHZ. 2008-10-08T05:55:34.34 0.1 undecidable manual Pg 68 23.5542 -0.194 95
IV.LATE.HHZ. 2008-10-08T05:55:34.85 0.6 undecidable manual Pg 187 24.753 0.156 48
IV.SACS.HHZ. 2008-10-08T05:55:34.96 0.6 undecidable manual Sg 74 5.6943 -0.128 50
IV.SACS.HHZ. 2008-10-08T05:55:32.72 0.1 positive manual Pg 74 5.6943 0.111 100
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