Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 18-09-2012 and time 05:12:41 (UTC) in region 3 km S Castel Giorgio (TR)

A magnitude ML 2.0 earthquake occured in region: 3 km S Castel Giorgio (TR), on

  • 18-09-2012 05:12:41 (UTC)
  • 18-09-2012 07:12:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6830, 11.9710 at 7 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
Castel Giorgio TR 3 2131 2131
Bolsena VT 4 3991 6122
San Lorenzo Nuovo VT 5 2091 8213
Grotte di Castro VT 8 2683 10896
Castel Viscardo TR 9 2938 13834
Gradoli VT 10 1353 15187
Porano TR 11 1966 17153
Acquapendente VT 11 5506 22659
Orvieto TR 12 20630 43289
Bagnoregio VT 12 3650 46939
Lubriano VT 12 909 47848
Onano VT 13 995 48843
Latera VT 13 836 49679
Proceno VT 14 557 50236
Allerona TR 14 1794 52030
Capodimonte VT 16 1731 53761
Montefiascone VT 17 13432 67193
Marta VT 17 3499 70692
Valentano VT 18 2868 73560
Celleno VT 19 1355 74915
Ficulle TR 19 1669 76584
Castiglione in Teverina VT 20 2329 78913
Civitella d'Agliano VT 20 1640 80553

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Viterbo (67173 inhabitants)
57 Km W of Terni (111501 inhabitants)
58 Km SW of Perugia (166134 inhabitants)
67 Km W of Foligno (57155 inhabitants)
67 Km N of Civitavecchia (52991 inhabitants)
71 Km E of Grosseto (82087 inhabitants)
88 Km S of Arezzo (99543 inhabitants)
88 Km SE of Siena (53903 inhabitants)
97 Km NW of Roma (2864731 inhabitants)
98 Km NW of Guidonia Montecelio (88673 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
Reviewed
Rev100 		ML 2.0 2012-09-18
05:12:41		 42.6943 11.9633 6 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2189161
Bulletin
Rev1000 		ML 2.0 2012-09-18
05:12:41		 42.683 11.9712 7 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 2644501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-09-18 05:12:41 ± 0.12
Latitude 42.6830 ± 0.0063
Longitude 11.9712 ± 0.0073
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 2644501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 598
Semi-minor axis of confidence ellipse (meter) 590
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 162
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.14119
Epicentral distance of station farthest from the epicenter (degree) 0.98476
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 2644501
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:41:59

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 2189161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-09-18 05:19:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATVO.HHZ. 2012-09-18T05:13:07.79 0.6 undecidable manual S 24 85.248 50 0.48 42
IV.ATMI.HHZ. 2012-09-18T05:13:05.22 0.6 undecidable manual S 18 76.1682 50 0.33 44
IV.MURB.HHZ. 2012-09-18T05:13:05.76 0.6 undecidable manual S 35 78.4659 50 0.25 45
IV.MAON.HHZ. 2012-09-18T05:13:04.70 1.0 undecidable manual S 248 74.2701 50 0.32 22
IV.CAFI.HHZ. 2012-09-18T05:13:03.99 0.6 undecidable manual S 360 71.6727 50 0.29 45
IV.TOLF.HHZ. 2012-09-18T05:13:02.19 0.6 undecidable manual S 178 68.6757 50 -0.71 40
IV.ATTE.HHZ. 2012-09-18T05:13:01.88 0.3 undecidable manual S 28 64.9905 50 -0.04 72
IV.PIEI.HHZ. 2012-09-18T05:12:59.52 0.6 undecidable manual P 26 105.0171 50 0.19 43
IV.ATBU.EHZ. 2012-09-18T05:12:59.17 0.6 positive manual P 28 99.6225 50 0.68 38
IV.CRE.HHZ. 2012-09-18T05:12:59.56 0.6 undecidable manual P 359 103.8183 50 0.41 41
IV.PARC.HHZ. 2012-09-18T05:12:59.97 0.3 undecidable manual P 11 109.3128 50 -0.01 66
IV.ATPC.HHZ. 2012-09-18T05:12:58.13 0.1 undecidable manual P 24 96.8253 50 0.06 89
IV.FDMO.HHZ. 2012-09-18T05:12:58.75 1.0 negative manual P 66 98.8233 50 0.37 21
IV.CASP.HHZ. 2012-09-18T05:12:57.70 0.1 undecidable manual P 278 90.9423 50 0.55 81
IV.ARCI.HHZ. 2012-09-18T05:12:56.02 0.3 undecidable manual S 295 44.5221 50 -0.43 69
IV.ATVO.HHZ. 2012-09-18T05:12:56.03 1.0 negative manual P 24 85.248 50 -0.25 22
IV.MAON.HHZ. 2012-09-18T05:12:55.30 1.0 negative manual P 248 74.2701 50 0.71 20
IV.ATMI.HHZ. 2012-09-18T05:12:55.39 0.3 positive manual P 18 76.1682 50 0.51 63
IV.MURB.HHZ. 2012-09-18T05:12:54.86 0.1 undecidable manual P 35 78.4659 50 -0.38 87
IV.CAFI.HHZ. 2012-09-18T05:12:53.69 0.1 undecidable manual P 360 71.6727 50 -0.5 85
IV.ARRO.EHZ. 2012-09-18T05:12:53.78 0.3 undecidable manual P 100 65.8896 50 0.49 65
IV.ATVA.EHZ. 2012-09-18T05:12:53.69 0.6 undecidable manual P 21 70.7736 50 -0.37 44
IV.TOLF.HHZ. 2012-09-18T05:12:52.44 0.6 undecidable manual P 178 68.6757 50 -1.29 30
IV.ATTE.HHZ. 2012-09-18T05:12:52.93 0.1 undecidable manual P 28 64.9905 50 -0.23 92
IV.MGAB.HHZ. 2012-09-18T05:12:51.14 0.3 undecidable manual S 24 27.9498 104 -0.05 76
IV.CESX.HHZ. 2012-09-18T05:12:51.26 0.3 undecidable manual P 99 50.9157 50 0.27 70
IV.MCIV.HHZ. 2012-09-18T05:12:50.64 0.3 undecidable manual S 294 26.2515 105 0.01 77
IV.ARCI.HHZ. 2012-09-18T05:12:49.57 0.1 undecidable manual P 295 44.5221 50 -0.43 91
IV.LATE.HHZ. 2012-09-18T05:12:47.44 0.3 undecidable manual S 241 15.6732 114 0.29 74
IV.MGAB.HHZ. 2012-09-18T05:12:46.43 0.1 undecidable manual P 24 27.9498 104 -0.54 91
IV.MCIV.HHZ. 2012-09-18T05:12:46.58 0.3 undecidable manual P 294 26.2515 105 -0.06 76
IV.LATE.HHZ. 2012-09-18T05:12:44.88 0.1 undecidable manual P 241 15.6732 114 0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARCI.HHN. ML:1.7 0.0001615 0.4 AML other m 2012-09-18T05:12:56.64
IV.ARCI.HHE. ML:1.7 0.0001555 0.62 AML other m 2012-09-18T05:12:58.32
IV.ATBU.EHE. ML:2.2 0.0001782 0.32 AML other m 2012-09-18T05:13:15.13
IV.ATBU.EHN. ML:2.1 0.00012785000000000002 0.96 AML other m 2012-09-18T05:13:15.11
IV.ATMI.HHN. ML:2.6 0.0005845000000000001 0.28 AML other m 2012-09-18T05:13:08.12
IV.ATMI.HHE. ML:2.4 0.000341 1.38 AML other m 2012-09-18T05:13:08.47
IV.ATPC.HHN. ML:2.0 0.00009695 0.24 AML other m 2012-09-18T05:13:13.75
IV.ATPC.HHE. ML:2.2 0.0001585 0.44 AML other m 2012-09-18T05:13:17.08
IV.ATTE.HHN. ML:1.9 0.0001565 0.48 AML other m 2012-09-18T05:13:05.29
IV.ATTE.HHE. ML:2.1 0.000215 1.08 AML other m 2012-09-18T05:13:05.20
IV.ATVA.EHE. ML:1.7 0.00008080000000000001 0.42 AML other m 2012-09-18T05:13:05.36
IV.ATVA.EHN. ML:1.8 0.0000983 1.12 AML other m 2012-09-18T05:13:07.93
IV.ATVO.HHE. ML:2.0 0.0001175 0.42 AML other m 2012-09-18T05:13:10.83
IV.ATVO.HHN. ML:1.8 0.0000762 0.38 AML other m 2012-09-18T05:13:12.67
IV.CAFI.HHE. ML:2.1 0.0002215 0.84 AML other m 2012-09-18T05:13:04.60
IV.CAFI.HHN. ML:2.0 0.00016749999999999998 0.38 AML other m 2012-09-18T05:13:05.08
IV.CASP.HHE. ML:1.5 0.000034099999999999995 0.5 AML other m 2012-09-18T05:13:12.19
IV.CASP.HHN. ML:2.1 0.00013700000000000002 0.44 AML other m 2012-09-18T05:13:12.37
IV.CRE.HHE. ML:1.9 0.00007795 1.2 AML other m 2012-09-18T05:13:16.99
IV.CRE.HHN. ML:2.0 0.00010145 0.3 AML other m 2012-09-18T05:13:17.91
IV.FDMO.HHN. ML:1.8 0.00006365 0.9 AML other m 2012-09-18T05:13:13.60
IV.FDMO.HHE. ML:1.8 0.0000562 0.48 AML other m 2012-09-18T05:13:19.61
IV.LATE.HHE. ML:2.6 0.0039 0.2 AML other m 2012-09-18T05:12:50.34
IV.LATE.HHN. ML:2.6 0.003965 0.34 AML other m 2012-09-18T05:12:52.12
IV.MAON.HHE. ML:1.7 0.00007475 0.36 AML other m 2012-09-18T05:13:07.32
IV.MAON.HHN. ML:2.1 0.0001815 0.42 AML other m 2012-09-18T05:13:07.15
IV.MCIV.HHN. ML:2.3 0.00109 0.28 AML other m 2012-09-18T05:12:52.15
IV.MCIV.HHE. ML:2.1 0.0007104999999999999 0.94 AML other m 2012-09-18T05:12:51.85
IV.MGAB.HNE. ML:2.3 0.001023 0.14 AML other m 2012-09-18T05:12:53.41
IV.MGAB.HHE. ML:2.3 0.0011 0.14 AML other m 2012-09-18T05:12:53.41
IV.MGAB.HNN. ML:2.2 0.000869 0.32 AML other m 2012-09-18T05:12:53.62
IV.MGAB.HHN. ML:2.2 0.0009559999999999999 0.32 AML other m 2012-09-18T05:12:53.62
IV.MURB.HHN. ML:2.6 0.000532 0.28 AML other m 2012-09-18T05:13:10.09
IV.MURB.HHE. ML:2.5 0.000496 0.68 AML other m 2012-09-18T05:13:10.49
IV.PARC.HHN. ML:1.9 0.00007394999999999998 0.74 AML other m 2012-09-18T05:13:18.38
IV.PARC.HHE. ML:1.9 0.00007195 1.12 AML other m 2012-09-18T05:13:16.39
IV.PIEI.HHN. ML:1.7 0.00004375 0.3 AML other m 2012-09-18T05:13:01.03
IV.PIEI.HHE. ML:1.8 0.00006035 0.34 AML other m 2012-09-18T05:13:14.98
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
Waveforms Seismic signals in miniseed + resp format Download