Earthquake with magnitude of ML 3.5 on date 18-12-2005 and time 09:06:48 (Italy) in region 1 km E Spoleto (PG)

A magnitude ML 3.5 earthquake occured in region: 1 km E Spoleto (PG), on

  • 18-12-2005 08:06:48 (UTC)
  • 18-12-2005 09:06:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7380, 12.7530 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
Spoleto PG 1 38218 38218
Sant'Anatolia di Narco PG 7 564 38782
Scheggino PG 7 461 39243
Campello sul Clitunno PG 10 2442 41685
Vallo di Nera PG 10 364 42049
Castel Ritaldi PG 12 3278 45327
Ferentillo TR 13 1913 47240
Poggiodomo PG 15 117 47357
Montefranco TR 16 1276 48633
Trevi PG 16 8469 57102
Cerreto di Spoleto PG 16 1075 58177
Arrone TR 17 2763 60940
Acquasparta TR 18 4778 65718
Giano dell'Umbria PG 18 3846 69564
Polino TR 19 233 69797
Monteleone di Spoleto PG 19 599 70396
Montefalco PG 19 5679 76075
Massa Martana PG 19 3770 79845

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Terni (111501 inhabitants)
25 Km S of Foligno (57155 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
64 Km NE of Viterbo (67173 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
82 Km N of Guidonia Montecelio (88673 inhabitants)
86 Km N of Tivoli (56533 inhabitants)
96 Km N of Roma (2864731 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 3.2
ML 3.5
2005-12-18
08:06:48
42.738 12.753 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 544859
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2005-12-18 08:06:48 ± 0.15
Latitude 42.7380 ± 0.0036
Longitude 12.7530 ± 0.0061
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 544859

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 524
Semi-minor axis of confidence ellipse (meter) 110
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 117
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 101
Number of defining phases 62
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.35173
Number of stations at which the event was observed 75
Number of stations from which data was used for origin computation 41
Magnitudes information

ML:3.5

Field Value
Value 3.5
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 544859
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:30:35

Md:3.2

Field Value
Value 3.2
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 544859
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:30:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FVI.EHE. 2005-12-18T08:08:11.15 10.0 undecidable manual Sn 0 0 0
MN.TUE.HHN. 2005-12-18T08:08:00.68 10.0 undecidable manual Pn 0 0 0
IV.FIU.EHN. 2005-12-18T08:07:59.95 10.0 undecidable manual Sn 0 0 0
IV.DOI.SHZ. 2005-12-18T08:07:56.75 10.0 undecidable manual Pn 0 0 0
IV.BRMO.BHZ. 2005-12-18T08:07:54.56 10.0 undecidable manual Pn 0 0 0
IV.BRES.EHZ. 2005-12-18T08:07:52.43 10.0 undecidable manual Pn 0 0 0
IV.APPI.EHZ. 2005-12-18T08:07:50.41 10.0 undecidable manual Pn 0 0 0
IV.FIN.SHZ. 2005-12-18T08:07:50.04 10.0 undecidable manual Pn 0 0 0
IV.FVI.EHE. 2005-12-18T08:07:49.43 10.0 undecidable manual Pn 0 0 0
IV.MDI.HHZ. 2005-12-18T08:07:48.49 10.0 undecidable manual Pn 0 0 0
IV.MABI.HHZ. 2005-12-18T08:07:47.72 10.0 undecidable manual Pn 0 0 0
IV.PTCC.SHZ. 2005-12-18T08:07:46.43 10.0 undecidable manual Pn 0 0 0
IV.SALO.HHN. 2005-12-18T08:07:44.34 10.0 undecidable manual Pn 0 0 0
IV.GMNA.SHZ. 2005-12-18T08:07:44.58 10.0 undecidable manual Pn 0 0 0
IV.CTI.SHZ. 2005-12-18T08:07:42.68 10.0 undecidable manual Pn 0 0 0
IV.SAL.SHZ. 2005-12-18T08:07:41.95 10.0 undecidable manual Pn 0 0 0
IV.FG4.SHZ. 2005-12-18T08:07:40.86 10.0 undecidable manual Pn 0 0 0
IV.FGMS.SHZ. 2005-12-18T08:07:37.36 10.0 undecidable manual Pn 0 0 0
IV.TRI.SHZ. 2005-12-18T08:07:37.95 10.0 undecidable manual Pn 0 0 0
IV.SGO.SHZ. 2005-12-18T08:07:37.72 10.0 undecidable manual Pn 0 0 0
IV.FIU.EHN. 2005-12-18T08:07:36.43 10.0 undecidable manual Pn 0 0 0
IV.TRIV.HHZ. 2005-12-18T08:07:33.29 10.0 undecidable manual Sn 0 0 0
IV.CSNT.SHZ. 2005-12-18T08:07:33.03 0.1 undecidable manual Sg 305 143.8449 -0.074 41
IV.ERBM.SHZ. 2005-12-18T08:07:32.28 10.0 undecidable manual Pg 0 0 0
IV.ZCCA.EHZ. 2005-12-18T08:07:32.15 10.0 undecidable manual Sn 0 0 0
IV.MAON.HHE. 2005-12-18T08:07:31.43 0.1 undecidable manual Sg 256 136.863 0.407 40
IV.RGNG.SHZ. 2005-12-18T08:07:30.01 0.1 undecidable manual Pg 116 261.0387 1.046 31
IV.GSCL.SHZ. 2005-12-18T08:07:28.25 0.1 undecidable manual Pg 317 249.6612 0.693 39
IV.ZCCA.EHZ. 2005-12-18T08:07:28.18 10.0 undecidable manual Pn 0 0 0
IV.PZZT.HHE. 2005-12-18T08:07:27.56 10.0 undecidable manual Sn 0 0 0
IV.FG2.SHZ. 2005-12-18T08:07:26.50 10.0 undecidable manual Pg 0 0 0
MN.VLC.HHE. 2005-12-18T08:07:26.94 0.1 undecidable manual Pg 310 247.3635 -0.34 44
IV.CRE.EHZ. 2005-12-18T08:07:26.01 0.6 undecidable manual Sg 327 117.2937 0.796 19
IV.BSSO.HHZ. 2005-12-18T08:07:26.82 10.0 undecidable manual Pn 0 0 0
IV.TRIV.HHZ. 2005-12-18T08:07:26.21 10.0 undecidable manual Pn 0 0 0
IV.VVLD.EHZ. 2005-12-18T08:07:25.77 0.1 undecidable manual Sg 143 119.8911 -0.209 42
IV.BRSN.SHZ. 2005-12-18T08:07:25.15 10.0 undecidable manual Pn 0 0 0
IV.BDI.HHZ. 2005-12-18T08:07:24.07 0.1 undecidable manual Pg 311 227.6055 -0.76 44
IV.PZZT.HHE. 2005-12-18T08:07:24.26 10.0 undecidable manual Pn 0 0 0
IV.VAGA.HHZ. 2005-12-18T08:07:23.21 10.0 undecidable manual Pg 0 0 0
IV.FNVD.HHZ. 2005-12-18T08:07:22.33 0.1 undecidable manual Pg 321 205.9383 0.178 61
IV.PII.SHZ. 2005-12-18T08:07:22.22 0.1 undecidable manual Pg 302 210.6336 -0.509 54
IV.RDP.BHZ. 2005-12-18T08:07:22.92 0.1 undecidable manual Sg 182 108.7134 0.27 44
IV.FSSB.SHZ. 2005-12-18T08:07:22.08 0.1 undecidable manual Sg 1 106.0161 0.219 45
IV.RNI2.HHZ. 2005-12-18T08:07:19.12 10.0 undecidable manual Pg 0 0 0
IV.SEI.SHZ. 2005-12-18T08:07:19.89 0.1 undecidable manual Pg 323 184.2711 0.413 65
IV.BADI.EHZ. 2005-12-18T08:07:18.50 0.1 undecidable manual Sg 335 95.0382 -0.097 45
IV.MIDA.HHZ. 2005-12-18T08:07:18.90 0.1 undecidable manual Pg 134 173.1933 0.796 61
IV.PIEI.BHN. 2005-12-18T08:07:17.90 0.1 undecidable manual Sg 349 90.243 0.717 41
IV.RFI.SHZ. 2005-12-18T08:07:17.28 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2005-12-18T08:07:16.87 0.1 undecidable manual Pg 325 167.2104 -0.492 70
IV.CERT.HHN. 2005-12-18T08:07:16.60 0.1 undecidable manual Sg 168 89.4438 -0.343 43
IV.PTS.SHZ. 2005-12-18T08:07:15.43 10.0 undecidable manual Pg 0 0 0
IV.ARVD.EHZ. 2005-12-18T08:07:15.52 0.1 undecidable manual Sg 10 85.7475 -0.315 44
IV.ARV.SHZ. 2005-12-18T08:07:15.60 0.1 undecidable manual Sg 10 85.6476 -0.22 45
IV.SDI.SHZ. 2005-12-18T08:07:15.89 10.0 undecidable manual Pg 0 0 0
IV.FAGN.EHN. 2005-12-18T08:07:15.92 0.1 undecidable manual Sg 127 85.7475 0.073 47
IV.SFI.SHZ. 2005-12-18T08:07:14.18 0.1 undecidable manual Pg 331 148.74 -0.104 82
IV.GRFL.SHZ. 2005-12-18T08:07:14.10 0.1 undecidable manual Pg 288 151.3374 -0.622 72
IV.PESA.EHZ. 2005-12-18T08:07:13.92 10.0 undecidable manual Pg 0 0 0
IV.MTCE.BHZ. 2005-12-18T08:07:13.98 0.1 undecidable manual Sg 181 79.2651 0.06 48
IV.CSNT.SHZ. 2005-12-18T08:07:13.51 0.1 undecidable manual Pg 305 143.8449 0.036 83
IV.GIUL.BHZ. 2005-12-18T08:07:12.62 0.1 undecidable manual Pg 162 137.1627 0.259 81
IV.SACS.HHZ. 2005-12-18T08:07:11.46 0.1 undecidable manual Sg 281 69.7746 0.381 46
IV.MAON.HHE. 2005-12-18T08:07:11.47 0.1 undecidable manual Pg 256 136.863 -0.835 68
IV.RSM.SHZ. 2005-12-18T08:07:11.98 0.1 undecidable manual Pg 350 134.5653 0.058 85
IV.TERO.HHZ. 2005-12-18T08:07:11.75 0.1 undecidable manual Sg 100 70.5738 0.424 46
IV.VVLD.EHZ. 2005-12-18T08:07:10.14 0.1 undecidable manual Pg 143 119.8911 0.669 74
IV.LAV9.SHZ. 2005-12-18T08:07:10.30 10.0 undecidable manual Pg 0 0 0
IV.GUAR.EHN. 2005-12-18T08:07:09.10 0.1 undecidable manual Pg 156 114.2967 0.566 78
IV.CRE.EHZ. 2005-12-18T08:07:09.26 0.1 undecidable manual Pg 327 117.2937 0.218 85
IV.INTR.HHZ. 2005-12-18T08:07:09.47 0.1 undecidable manual Pg 130 124.0869 -0.703 74
IV.AOI.BHZ. 2005-12-18T08:07:08.71 0.1 undecidable manual Pg 37 113.3976 0.327 84
IV.MURB.HHZ. 2005-12-18T08:07:08.88 0.1 undecidable manual Sg 342 61.1943 0.351 47
IV.CAMP.EHZ. 2005-12-18T08:07:07.75 0.1 undecidable manual Sg 112 57.9975 0.147 50
IV.RDP.BHZ. 2005-12-18T08:07:07.56 0.1 undecidable manual Pg 182 108.7134 -0.041 91
IV.FIAM.HHE. 2005-12-18T08:07:07.63 0.1 undecidable manual Sg 150 59.9955 -0.558 42
IV.ROM9.HHZ. 2005-12-18T08:07:07.36 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2005-12-18T08:07:07.19 0.1 undecidable manual Sg 15 59.3961 -0.814 38
IV.FSSB.SHZ. 2005-12-18T08:07:06.90 0.1 undecidable manual Pg 1 106.0161 -0.258 87
IV.TOLF.HHZ. 2005-12-18T08:07:05.67 0.1 undecidable manual Pg 220 96.8253 0.039 92
IV.VCEL.EHN. 2005-12-18T08:07:05.75 0.1 undecidable manual Pg 113 96.6255 0.151 90
IV.BADI.EHZ. 2005-12-18T08:07:05.59 0.1 undecidable manual Pg 335 95.0382 0.265 88
IV.PTQR.SHZ. 2005-12-18T08:07:04.62 0.1 undecidable manual Pg 146 95.5377 -0.783 76
IV.PIEI.BHN. 2005-12-18T08:07:04.54 0.1 undecidable manual Pg 349 90.243 0.009 94
IV.FAGN.EHN. 2005-12-18T08:07:03.61 0.1 undecidable manual Pg 127 85.7475 -0.17 93
IV.ARVD.EHZ. 2005-12-18T08:07:03.78 0.1 undecidable manual Pg 10 85.7475 0.007 95
IV.CERT.HHN. 2005-12-18T08:07:03.92 0.1 undecidable manual Pg 168 89.4438 -0.475 86
IV.ARV.SHZ. 2005-12-18T08:07:03.61 0.1 undecidable manual Pg 10 85.6476 -0.155 93
IV.MTCE.BHZ. 2005-12-18T08:07:02.49 0.1 undecidable manual Pg 181 79.2651 -0.207 93
IV.MNS.BHN. 2005-12-18T08:07:02.50 0.1 undecidable manual Sg 189 39.5271 0.407 49
IV.SACS.HHZ. 2005-12-18T08:07:01.31 0.1 undecidable manual Pg 281 69.7746 0.209 93
IV.TERO.HHZ. 2005-12-18T08:07:00.82 0.1 undecidable manual Pg 100 70.5738 -0.419 90
IV.AQU.SHZ. 2005-12-18T08:07:00.55 0.1 undecidable manual Pg 129 67.9764 -0.263 94
IV.SNTG.SHZ. 2005-12-18T08:06:59.35 0.1 undecidable manual Pg 15 59.3961 -0.024 100
IV.MURB.HHZ. 2005-12-18T08:06:59.87 0.1 undecidable manual Pg 342 61.1943 0.2 95
IV.CAMP.EHZ. 2005-12-18T08:06:59.03 0.1 undecidable manual Pg 112 57.9975 -0.119 99
IV.LNSS.BHN. 2005-12-18T08:06:59.24 0.1 undecidable manual Sg 122 27.8499 0.622 43
IV.FIAM.HHE. 2005-12-18T08:06:59.32 0.1 undecidable manual Pg 150 59.9955 -0.157 97
IV.MNS.BHN. 2005-12-18T08:06:56.49 0.1 undecidable manual Pg 189 39.5271 0.438 94
IV.LNSS.BHN. 2005-12-18T08:06:54.51 0.1 undecidable manual Pg 122 27.8499 0.409 92
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download