Earthquake with magnitude of ML 1.7 on date 26-10-2009 and time 12:12:51 (Italy) in region 5 km N Montecchio (TR)

A magnitude ML 1.7 earthquake occured in region: 5 km N Montecchio (TR), on

  • 26-10-2009 11:12:51 (UTC)
  • 26-10-2009 12:12:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7120, 12.2880 at 10 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
Montecchio TR 5 1676 1676
Baschi TR 7 2722 4398
Guardea TR 10 1836 6234
Castiglione in Teverina VT 10 2329 8563
Todi PG 13 16851 25414
Avigliano Umbro TR 13 2558 27972
Alviano TR 14 1463 29435
Civitella d'Agliano VT 14 1640 31075
Orvieto TR 15 20630 51705
Monte Castello di Vibio PG 15 1567 53272
Porano TR 15 1966 55238
Lugnano in Teverina TR 16 1494 56732
Graffignano VT 17 2292 59024
Lubriano VT 17 909 59933
Fratta Todina PG 18 1839 61772
San Venanzo TR 18 2218 63990
Montecastrilli TR 18 5022 69012
Bagnoregio VT 18 3650 72662
Amelia TR 20 11897 84559

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of Terni (111501 inhabitants)
36 Km NE of Viterbo (67173 inhabitants)
44 Km SW of Foligno (57155 inhabitants)
45 Km S of Perugia (166134 inhabitants)
80 Km NE of Civitavecchia (52991 inhabitants)
87 Km NW of Guidonia Montecelio (88673 inhabitants)
90 Km SE of Arezzo (99543 inhabitants)
92 Km N of Roma (2864731 inhabitants)
93 Km NW of Tivoli (56533 inhabitants)
96 Km E of Grosseto (82087 inhabitants)
100 Km W of L'Aquila (69753 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 2.3
ML 1.7
2009-10-26
11:12:51
42.712 12.288 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 983229
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-10-26 11:12:51 ± 1.03
Latitude 42.7120 ± 0.0333
Longitude 12.2880 ± 0.0649
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 983229

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5737
Semi-minor axis of confidence ellipse (meter) 3000
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) 6463.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 288
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.78
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36962
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 983229
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:48:53

Md:2.3

Field Value
Value 2.3
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 983229
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:48:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIB.SHZ. 2009-10-26T11:13:09.96 10.0 undecidable manual Pg 0 0 0
IV.LATE.HHZ. 2009-10-26T11:13:05.32 0.6 undecidable manual Sg 255 41.0256 0.183 47
IV.SACS.HHZ. 2009-10-26T11:13:03.02 0.6 undecidable manual Sg 296 34.4433 -0.36 46
IV.MGAB.HHZ. 2009-10-26T11:13:02.09 0.6 undecidable manual Sg 327 26.5512 0.817 40
IV.LATE.HHZ. 2009-10-26T11:12:59.99 0.6 undecidable manual Pg 255 41.0256 0.616 42
IV.MGAB.HHZ. 2009-10-26T11:12:57.11 0.1 undecidable manual Pg 327 26.5512 -0.032 100
IV.SACS.HHZ. 2009-10-26T11:12:57.57 0.3 undecidable manual Pg 296 34.4433 -0.787 60
IV.MESG.HHE. 2009-10-26T11:12:37.40 10.0 undecidable manual Pg 0 0 0
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