Earthquake with magnitude of ML 1.1 on date 15-12-2006 and time 05:53:35 (UTC) in region 5 km S Radicofani (SI)

A magnitude ML 1.1 earthquake occured in region: 5 km S Radicofani (SI), on

  • 15-12-2006 05:53:35 (UTC)
  • 15-12-2006 06:53:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8560, 11.7630 at 2 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
Radicofani SI 5 1097 1097
Piancastagnaio SI 6 4230 5327
Abbadia San Salvatore SI 8 6444 11771
San Casciano dei Bagni SI 9 1632 13403
Castell'Azzara GR 11 1476 14879
Proceno VT 12 557 15436
Santa Fiora GR 15 2622 18058
Acquapendente VT 15 5506 23564
Cetona SI 17 2755 26319
Sarteano SI 17 4717 31036
Allerona TR 18 1794 32830
Arcidosso GR 18 4285 37115
Onano VT 18 995 38110
Seggiano GR 19 961 39071
Castel del Piano GR 19 4690 43761
Sorano GR 20 3428 47189

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km E of Grosseto (82087 inhabitants)
56 Km NW of Viterbo (67173 inhabitants)
58 Km W of Perugia (166134 inhabitants)
62 Km SE of Siena (53903 inhabitants)
69 Km S of Arezzo (99543 inhabitants)
78 Km W of Foligno (57155 inhabitants)
79 Km W of Terni (111501 inhabitants)
85 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 1.7
ML 1.1
2006-12-15
05:53:35
42.856 11.763 2 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 605619
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-12-15 05:53:35 ± 0.17
Latitude 42.8560 ± 0.0108
Longitude 11.7630 ± 0.0074
Depth (km) 2 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 605619

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1158
Semi-minor axis of confidence ellipse (meter) 632
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 6
Circular confidence region, given by single value of horizontal uncertainty (meter) 1341.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 185
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) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.10792
Epicentral distance of station farthest from the epicenter (degree) 0.24372
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:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 605619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:33:48

Md:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 605619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:33:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LATE.HHE. 2006-12-15T05:53:45.59 0.1 undecidable manual Sg 173 27.0507 0.227 48
IV.ARCI.HHZ. 2006-12-15T05:53:43.96 0.1 undecidable manual Sg 269 23.3544 -0.116 49
IV.LATE.HHE. 2006-12-15T05:53:41.19 0.1 undecidable manual Pg 173 27.0507 -0.191 96
IV.ARCI.HHZ. 2006-12-15T05:53:40.68 0.1 undecidable manual Pg 269 23.3544 0.042 100
IV.SACS.HHZ. 2006-12-15T05:53:39.73 0.1 undecidable manual Sg 94 11.9769 -0.424 47
IV.SACS.HHZ. 2006-12-15T05:53:38.67 0.1 undecidable manual Pg 94 11.9769 0.297 97
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