Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 23-01-2006 and time 00:46:36 (Italy) in region 4 km SE Pietralunga (PG)

A magnitude ML 2.1 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 22-01-2006 23:46:36 (UTC)
  • 23-01-2006 00:46:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4200, 12.4770 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Pietralunga PG 4 2111 2111
Gubbio PG 11 32216 34327
Montone PG 14 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Apecchio PU 16 1882 41527
Umbertide PG 17 16681 58208
Piobbico PU 19 2029 60237
Città di Castello PG 20 39913 100150
Cagli PU 20 8731 108881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
55 Km NW of Foligno (57155 inhabitants)
64 Km SW of Fano (60888 inhabitants)
65 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
82 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
93 Km E of Siena (53903 inhabitants)
96 Km SE of Forlì (117913 inhabitants)
96 Km N of Terni (111501 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 2.1
ML 2.1 		2006-01-22
23:46:36		 43.42 12.477 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 550759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-01-22 23:46:36 ± 0.09
Latitude 43.4200 ± 0.0045
Longitude 12.4770 ± 0.0087
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 550759

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 672
Semi-minor axis of confidence ellipse (meter) 521
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 289
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37502
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 550759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:36:35

Md:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 550759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:36:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGR.EHN. 2006-01-22T23:47:17.71 10.0 undecidable manual Pg 0 0 0
IV.NRCA.SHZ. 2006-01-22T23:47:03.48 10.0 undecidable manual Pg 0 0 0
IV.SFI.SHZ. 2006-01-22T23:46:52.70 10.0 undecidable manual Pg 0 0 0
IV.CRE.EHN. 2006-01-22T23:46:52.88 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2006-01-22T23:46:50.85 0.1 undecidable manual Sg 116 41.625 0.445 44
IV.ARV.SHZ. 2006-01-22T23:46:49.73 0.1 undecidable manual Sg 77 38.3283 0.199 47
IV.ARVD.EHZ. 2006-01-22T23:46:49.86 0.1 undecidable manual Sg 77 38.4282 0.319 46
IV.BADI.EHZ. 2006-01-22T23:46:44.99 0.1 undecidable manual Sg 298 21.1677 0.213 48
IV.SNTG.SHZ. 2006-01-22T23:46:44.36 0.1 undecidable manual Pg 116 41.625 -0.223 93
IV.ARVD.EHZ. 2006-01-22T23:46:43.89 0.1 positive manual Pg 77 38.4282 -0.192 94
IV.MURB.HHN. 2006-01-22T23:46:43.96 0.1 undecidable manual Sg 167 17.871 0.212 48
IV.ARV.SHZ. 2006-01-22T23:46:43.90 0.1 positive manual Pg 77 38.3283 -0.176 94
IV.PIEI.BHE. 2006-01-22T23:46:42.67 0.1 undecidable manual Sg 20 13.6752 0.138 50
IV.BADI.EHZ. 2006-01-22T23:46:41.37 0.1 positive manual Pg 298 21.1677 0.034 100
IV.MURB.HHN. 2006-01-22T23:46:40.63 0.1 positive manual Pg 167 17.871 -0.105 99
IV.PIEI.BHE. 2006-01-22T23:46:39.92 0.1 positive manual Pg 20 13.6752 -0.115 100
IV.FIU.EHN. 2006-01-22T23:46:23.84 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