Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 27-01-2013 and time 03:47:57 (Italy) in region 2 km W Trevi (PG)

A magnitude ML 1.5 earthquake occured in region: 2 km W Trevi (PG), on

  • 27-01-2013 02:47:57 (UTC)
  • 27-01-2013 03:47:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8780, 12.7250 at 6 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
Trevi PG 2 8469 8469
Montefalco PG 6 5679 14148
Castel Ritaldi PG 7 3278 17426
Campello sul Clitunno PG 8 2442 19868
Foligno PG 9 57155 77023
Bevagna PG 11 5081 82104
Giano dell'Umbria PG 13 3846 85950
Spello PG 14 8645 94595
Gualdo Cattaneo PG 14 6155 100750
Spoleto PG 16 38218 138968
Vallo di Nera PG 17 364 139332
Sellano PG 17 1079 140411
Cerreto di Spoleto PG 17 1075 141486
Cannara PG 17 4305 145791
Sant'Anatolia di Narco PG 18 564 146355
Massa Martana PG 20 3770 150125

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km S of Foligno (57155 inhabitants)
36 Km N of Terni (111501 inhabitants)
37 Km SE of Perugia (166134 inhabitants)
72 Km NE of Viterbo (67173 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
84 Km W of Teramo (54892 inhabitants)
95 Km SE of Arezzo (99543 inhabitants)
98 Km N 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
Bulletin
Rev1000 		ML 1.5 2013-01-27
02:47:57		 42.8783 12.7253 6 2015-01-20
11:22:06		 Bollettino Sismico Italiano INGV 4673141
Reviewed
Rev100 		ML 1.5 2013-01-27
02:47:57		 42.8772 12.7202 7 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2884301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-01-27 02:47:57 ± 0.09
Latitude 42.8783 ± 0.0054
Longitude 12.7253 ± 0.0074
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4673141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 735
Semi-minor axis of confidence ellipse (meter) 346
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 139
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.28778
Epicentral distance of station farthest from the epicenter (degree) 0.55938
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 2884301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-01-27 02:53:43

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 4673141
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:04:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2013-01-27T02:48:18.26 0.6 undecidable manual S 4 62.0934 50 0.66 40
IV.EL6.EHZ. 2013-01-27T02:48:16.87 1.0 undecidable manual S 31 58.5969 50 0.2 23
IV.MGAB.HHZ. 2013-01-27T02:48:14.40 0.6 undecidable manual S 275 50.0166 50 0.03 48
IV.FOSV.EHZ. 2013-01-27T02:48:13.39 0.3 undecidable manual S 4 46.3203 50 0 73
IV.SNTG.HHZ. 2013-01-27T02:48:12.90 0.6 undecidable manual S 23 45.3213 50 -0.22 47
IV.LNSS.HHZ. 2013-01-27T02:48:11.47 0.6 undecidable manual S 140 39.9267 99 0 49
IV.FDMO.HHZ. 2013-01-27T02:48:09.58 0.6 undecidable manual S 59 34.2435 100 0.05 49
IV.ARRO.EHZ. 2013-01-27T02:48:09.55 0.6 undecidable manual S 174 33.3444 100 0.33 47
IV.NRCA.HHZ. 2013-01-27T02:48:08.96 0.6 undecidable manual S 99 32.0457 101 0.19 48
IV.EL6.EHZ. 2013-01-27T02:48:08.40 0.1 undecidable manual P 31 58.5969 50 -0.15 93
IV.CESX.HHZ. 2013-01-27T02:48:08.38 0.6 undecidable manual S 201 31.9458 101 -0.38 46
IV.SSFR.HHZ. 2013-01-27T02:48:08.99 0.1 undecidable manual P 4 62.0934 50 -0.1 93
IV.MGAB.HHZ. 2013-01-27T02:48:07.33 0.1 undecidable manual P 275 50.0166 50 0.11 95
IV.FOSV.EHZ. 2013-01-27T02:48:06.48 0.1 undecidable manual P 4 46.3203 50 -0.18 94
IV.SNTG.HHZ. 2013-01-27T02:48:06.39 0.1 undecidable manual P 23 45.3213 50 -0.11 96
IV.MURB.HHZ. 2013-01-27T02:48:06.64 0.1 undecidable manual P 339 45.7209 50 0.08 96
IV.LNSS.HHZ. 2013-01-27T02:48:05.19 0.1 undecidable manual P 140 39.9267 99 -0.36 92
IV.ARRO.EHZ. 2013-01-27T02:48:04.56 0.1 undecidable manual P 174 33.3444 100 0.31 94
IV.NRCA.HHZ. 2013-01-27T02:48:04.02 0.1 undecidable manual P 99 32.0457 101 0.03 100
IV.FDMO.HHZ. 2013-01-27T02:48:04.47 0.1 undecidable manual P 59 34.2435 100 0.04 99
IV.CESX.HHZ. 2013-01-27T02:48:03.97 0.1 undecidable manual P 201 31.9458 101 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.7 0.00023549999999999998 1.1 AML other m 2013-01-27T02:48:09.95
IV.CESX.HHE. ML:1.7 0.000213 0.64 AML other m 2013-01-27T02:48:10.08
IV.FOSV.EHN. ML:1.2 0.00004785 1.58 AML other m 2013-01-27T02:48:17.03
IV.FOSV.EHE. ML:1.1 0.00003925 1.58 AML other m 2013-01-27T02:48:48.76
IV.LNSS.HHN. ML:1.6 0.00015000000000000001 1.34 AML other m 2013-01-27T02:48:13.81
IV.LNSS.HHE. ML:1.6 0.0001275 0.86 AML other m 2013-01-27T02:48:13.82
IV.MGAB.HHN. ML:1.5 0.0000765 0.6 AML other m 2013-01-27T02:48:15.30
IV.MGAB.HHE. ML:1.5 0.00007744999999999999 0.4 AML other m 2013-01-27T02:48:16.97
IV.NRCA.HHN. ML:1.7 0.0002565 1 AML other m 2013-01-27T02:48:11.22
IV.NRCA.HHE. ML:1.6 0.0002065 0.16 AML other m 2013-01-27T02:48:12.04
IV.SSFR.HHN. ML:1.5 0.00005855000000000001 0.24 AML other m 2013-01-27T02:48:19.71
IV.SSFR.HHE. ML:1.6 0.00008245 0.2 AML other m 2013-01-27T02:48:19.48
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