Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 11-08-2006 and time 12:22:56 (Italy) in region 5 km W Norcia (PG)

A magnitude ML 2.1 earthquake occured in region: 5 km W Norcia (PG), on

  • 11-08-2006 10:22:56 (UTC)
  • 11-08-2006 12:22:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7890, 13.0380 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
Norcia PG 5 4957 4957
Cascia PG 8 3217 8174
Preci PG 10 724 8898
Cerreto di Spoleto PG 10 1075 9973
Poggiodomo PG 12 117 10090
Vallo di Nera PG 14 364 10454
Sellano PG 14 1079 11533
Castelsantangelo sul Nera MC 15 281 11814
Visso MC 16 1107 12921
Monteleone di Spoleto PG 17 599 13520
Sant'Anatolia di Narco PG 18 564 14084
Scheggino PG 19 461 14545
Ussita MC 19 444 14989

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SE of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
56 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
64 Km SE of Perugia (166134 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
91 Km N of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
100 Km SW of Ancona (100861 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 2.4
ML 2.1 		2006-08-11
10:22:56		 42.789 13.038 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 585899
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-08-11 10:22:56 ± 0.21
Latitude 42.7890 ± 0.0036
Longitude 13.0380 ± 0.0074
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 585899

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 571
Semi-minor axis of confidence ellipse (meter) 47
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 721.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.65390
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 585899
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:13:05

Md:2.4

Field Value
Value 2.4
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 585899
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:13:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VULT.HHZ. 2006-08-11T10:23:39.22 1.0 undecidable manual Pg 133 294.5829 -0.702 6
IV.CERT.HHN. 2006-08-11T10:23:24.78 1.0 undecidable manual Sg 183 93.3399 0.675 10
IV.ARV.SHZ. 2006-08-11T10:23:19.74 1.0 undecidable manual Sg 354 78.9654 -0.554 11
IV.OFFI.HHN. 2006-08-11T10:23:17.47 10.0 undecidable manual Pg 0 0 0
IV.CING.HHZ. 2006-08-11T10:23:17.51 1.0 undecidable manual Sg 11 66.2781 0.609 11
IV.FAGN.EHN. 2006-08-11T10:23:15.15 10.0 undecidable manual Pg 0 0 0
MN.AQU.HHN. 2006-08-11T10:23:15.68 10.0 undecidable manual Pg 0 0 0
IV.FIAM.HHE. 2006-08-11T10:23:14.68 0.1 undecidable manual Sg 174 58.1973 -0.047 49
IV.MNS.BHZ. 2006-08-11T10:23:13.29 0.1 undecidable manual Sg 213 53.4021 -0.176 49
IV.SNTG.SHZ. 2006-08-11T10:23:13.36 0.1 undecidable manual Sg 351 52.3032 0.197 48
IV.CERT.HHN. 2006-08-11T10:23:12.87 0.6 undecidable manual Pg 183 93.3399 0.476 42
IV.TERO.HHZ. 2006-08-11T10:23:12.56 0.1 undecidable manual Sg 112 49.7169 0.096 50
IV.ASS.SHZ. 2006-08-11T10:23:10.67 0.1 undecidable manual Sg 314 43.7229 -0.193 49
IV.ARV.SHZ. 2006-08-11T10:23:10.33 0.1 undecidable manual Pg 354 78.9654 0.136 93
IV.MURB.HHZ. 2006-08-11T10:23:08.44 0.1 undecidable manual Pg 322 67.0773 0.088 96
IV.CING.HHZ. 2006-08-11T10:23:08.09 0.3 undecidable manual Pg 11 66.2781 -0.145 72
IV.FIAM.HHE. 2006-08-11T10:23:07.03 0.1 undecidable manual Pg 174 58.1973 0.052 99
IV.MNS.BHZ. 2006-08-11T10:23:06.14 0.1 positive manual Pg 213 53.4021 -0.11 98
IV.SNTG.SHZ. 2006-08-11T10:23:05.89 0.1 undecidable manual Pg 351 52.3032 -0.185 97
IV.TERO.HHZ. 2006-08-11T10:23:05.50 0.1 undecidable manual Pg 112 49.7169 -0.172 98
IV.ASS.SHZ. 2006-08-11T10:23:04.87 0.1 negative manual Pg 314 43.7229 0.122 100
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