Earthquake with magnitude of ML 0.9 on date 03-08-2008 and time 07:47:44 (Italy) in region 5 km SW Asciano (SI)

A magnitude ML 0.9 earthquake occured in region: 5 km SW Asciano (SI), on

  • 03-08-2008 05:47:44 (UTC)
  • 03-08-2008 07:47:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1920, 11.5360 at 8 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
Asciano SI 5 7118 7118
San Giovanni d'Asso SI 6 853 7971
Buonconvento SI 7 3173 11144
Monteroni d'Arbia SI 10 9088 20232
Trequanda SI 11 1254 21486
Murlo SI 12 2389 23875
Rapolano Terme SI 12 5249 29124
Montalcino SI 15 5093 34217
San Quirico d'Orcia SI 16 2662 36879
Sinalunga SI 17 12764 49643
Pienza SI 17 2107 51750
Castelnuovo Berardenga SI 17 9097 60847
Torrita di Siena SI 19 7434 68281
Lucignano AR 20 3581 71862

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SE of Siena (53903 inhabitants)
42 Km SW of Arezzo (99543 inhabitants)
59 Km NE of Grosseto (82087 inhabitants)
68 Km SE of Firenze (382808 inhabitants)
69 Km SE of Scandicci (50609 inhabitants)
70 Km W of Perugia (166134 inhabitants)
84 Km SE of Prato (191150 inhabitants)
96 Km SE of Pistoia (90315 inhabitants)
98 Km NW of Viterbo (67173 inhabitants)
99 Km W of Foligno (57155 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 1.8
ML 0.9
2008-08-03
05:47:44
43.192 11.536 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 708489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2008-08-03 05:47:44 ± 0.16
Latitude 43.1920 ± 0.0090
Longitude 11.5360 ± 0.0160
Depth (km) 8 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 708489

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1263
Semi-minor axis of confidence ellipse (meter) 1000
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 1640.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.33275
Epicentral distance of station farthest from the epicenter (degree) 0.34264
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:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 708489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 13:24:52

Md:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 708489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 13:24:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHE. 2008-08-03T05:47:57.73 0.3 undecidable manual Sg 328 36.9297 -0.054 75
IV.CAFI.HHN. 2008-08-03T05:47:57.75 0.3 undecidable manual Sg 66 37.9287 -0.3 71
IV.ARCI.HHZ. 2008-08-03T05:47:57.66 0.3 undecidable manual Sg 187 38.0286 -0.421 69
IV.CSNT.HHE. 2008-08-03T05:47:52.22 0.1 undecidable manual Pg 328 36.9297 -0.068 100
IV.CAFI.HHN. 2008-08-03T05:47:52.72 0.1 undecidable manual Pg 66 37.9287 0.279 96
IV.ARCI.HHZ. 2008-08-03T05:47:52.83 0.1 undecidable manual Pg 187 38.0286 0.371 94
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