Earthquake with magnitude of ML 0.7 on date 27-03-2012 and time 19:17:56 (Italy) in region 1 km W Acquapendente (VT)

A magnitude ML 0.7 earthquake occured in region: 1 km W Acquapendente (VT), on

  • 27-03-2012 17:17:56 (UTC)
  • 27-03-2012 19:17:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7490, 11.8500 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
Acquapendente VT 1 5506 5506
Proceno VT 2 557 6063
Onano VT 7 995 7058
San Lorenzo Nuovo VT 8 2091 9149
Grotte di Castro VT 8 2683 11832
Castel Giorgio TR 12 2131 13963
Gradoli VT 12 1353 15316
Allerona TR 12 1794 17110
Castel Viscardo TR 13 2938 20048
Castell'Azzara GR 13 1476 21524
Sorano GR 13 3428 24952
Latera VT 14 836 25788
San Casciano dei Bagni SI 14 1632 27420
Bolsena VT 16 3991 31411
Piancastagnaio SI 17 4230 35641
Radicofani SI 18 1097 36738
Fabro TR 19 2876 39614
Pitigliano GR 19 3818 43432
Valentano VT 20 2868 46300

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NW of Viterbo (67173 inhabitants)
59 Km SW of Perugia (166134 inhabitants)
60 Km E of Grosseto (82087 inhabitants)
69 Km W of Terni (111501 inhabitants)
73 Km N of Civitavecchia (52991 inhabitants)
73 Km W of Foligno (57155 inhabitants)
76 Km SE of Siena (53903 inhabitants)
80 Km S of Arezzo (99543 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 1.4
ML 0.7
2012-03-27
17:17:56
42.749 11.85 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1353369
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-03-27 17:17:56 ± 0.17
Latitude 42.7490 ± 0.0027
Longitude 11.8500 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1353369

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 381
Semi-minor axis of confidence ellipse (meter) 65
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 111
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
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) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.13939
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:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1353369
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 03:01:23

Md:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1353369
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 03:01:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LATE.HHZ. 2012-03-27T17:18:02.64 0.3 undecidable manual Sg 194 15.4734 -0.05 75
IV.MCIV.HHZ. 2012-03-27T17:18:02.37 0.3 undecidable manual Sg 283 14.4744 -0.02 75
IV.SACS.HHN. 2012-03-27T17:18:01.75 0.3 undecidable manual Sg 24 12.0768 0.076 75
IV.LATE.HHZ. 2012-03-27T17:18:00.20 0.1 undecidable manual Pg 194 15.4734 0.069 99
IV.SACS.HHN. 2012-03-27T17:17:59.45 0.1 undecidable manual Pg 24 12.0768 -0.094 99
IV.MCIV.HHZ. 2012-03-27T17:17:59.99 0.1 undecidable manual Pg 283 14.4744 0.031 100
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