Earthquake with magnitude of ML 2.0 on date 23-12-2005 and time 15:20:38 (Italy) in region 3 km E Spoleto (PG)

A magnitude ML 2.0 earthquake occured in region: 3 km E Spoleto (PG), on

  • 23-12-2005 14:20:38 (UTC)
  • 23-12-2005 15:20:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7410, 12.7750 at 18 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
Spoleto PG 3 38218 38218
Sant'Anatolia di Narco PG 5 564 38782
Scheggino PG 6 461 39243
Vallo di Nera PG 8 364 39607
Campello sul Clitunno PG 9 2442 42049
Castel Ritaldi PG 12 3278 45327
Ferentillo TR 13 1913 47240
Poggiodomo PG 14 117 47357
Cerreto di Spoleto PG 15 1075 48432
Trevi PG 15 8469 56901
Montefranco TR 16 1276 58177
Arrone TR 17 2763 60940
Monteleone di Spoleto PG 18 599 61539
Polino TR 18 233 61772
Giano dell'Umbria PG 19 3846 65618
Acquasparta TR 19 4778 70396
Cascia PG 20 3217 73613
Montefalco PG 20 5679 79292

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Terni (111501 inhabitants)
25 Km S of Foligno (57155 inhabitants)
52 Km SE of Perugia (166134 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
77 Km W of Teramo (54892 inhabitants)
82 Km N of Guidonia Montecelio (88673 inhabitants)
86 Km N of Tivoli (56533 inhabitants)
97 Km N of Roma (2864731 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 2.0
2005-12-23
14:20:38
42.741 12.775 18 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 545739
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2005-12-23 14:20:38 ± 0.11
Latitude 42.7410 ± 0.0036
Longitude 12.7750 ± 0.0110
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 545739

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 806
Semi-minor axis of confidence ellipse (meter) 481
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 984.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55308
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 545739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:31:28

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 545739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:31:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHN. 2005-12-23T14:20:58.52 0.1 undecidable manual Sg 341 61.3941 -0.032 47
IV.FIAM.HHN. 2005-12-23T14:20:57.93 0.3 undecidable manual Sg 152 59.3961 -0.047 36
IV.SNTG.SHZ. 2005-12-23T14:20:57.55 0.1 undecidable manual Sg 13 58.5969 -0.187 46
IV.MNS.SHZ. 2005-12-23T14:20:52.55 0.1 undecidable manual Sg 191 40.1265 0.15 49
IV.MURB.HHN. 2005-12-23T14:20:49.46 0.1 undecidable manual Pg 341 61.3941 -0.13 93
IV.FIAM.HHN. 2005-12-23T14:20:49.16 0.1 undecidable manual Pg 152 59.3961 -0.107 95
IV.SNTG.SHZ. 2005-12-23T14:20:49.42 0.1 undecidable manual Pg 13 58.5969 0.289 93
IV.LNSS.BHN. 2005-12-23T14:20:48.42 0.3 undecidable manual Sg 125 26.4513 -0.22 37
IV.MNS.SHZ. 2005-12-23T14:20:46.07 0.1 undecidable manual Pg 191 40.1265 -0.064 99
IV.LNSS.BHN. 2005-12-23T14:20:44.19 0.1 undecidable manual Pg 125 26.4513 0.169 100
IV.IFIL.BHE. 2005-12-23T14:20:33.24 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