Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 05-04-2017 and time 16:25:22 (Italy) in region 4 km SE Sellano (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km SE Sellano (PG), on

  • 05-04-2017 14:25:22 (UTC)
  • 05-04-2017 16:25:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8580, 12.9430 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Sellano PG 4 1079 1079
Cerreto di Spoleto PG 5 1075 2154
Preci PG 8 724 2878
Vallo di Nera PG 12 364 3242
Campello sul Clitunno PG 14 2442 5684
Norcia PG 14 4957 10641
Visso MC 15 1107 11748
Monte Cavallo MC 16 145 11893
Trevi PG 16 8469 20362
Poggiodomo PG 16 117 20479
Sant'Anatolia di Narco PG 16 564 21043
Cascia PG 17 3217 24260
Castelsantangelo sul Nera MC 18 281 24541
Scheggino PG 18 461 25002
Ussita MC 19 444 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SE of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
53 Km SE of Perugia (166134 inhabitants)
66 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 Km N of Guidonia Montecelio (88673 inhabitants)
100 Km N of Tivoli (56533 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 1.0 2017-04-05
14:25:22		 42.8577 12.943 8 2017-04-05
14:32:49		 Sala Sismica INGV-Roma 43419371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-05 14:25:22 ± 0.22
Latitude 42.8577 ± 0.0045
Longitude 12.9430 ± 0.0110
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 43419371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 909
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 190
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.21854
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.0
Num. used stations 1
Type of magnitude ML
Reference to an origin 43419371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-05 14:32:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2017-04-05T14:25:53.06 3.0 undecidable manual S -0.86 0
IV.CAFI.HHZ. 2017-04-05T14:25:53.74 3.0 undecidable manual S 0.76 0
IV.FDMO.HHZ. 2017-04-05T14:25:31.08 0.6 undecidable manual S 31 23.0547 108 -0.05 50
IV.T1214.EHZ. 2017-04-05T14:25:31.04 0.6 undecidable manual S 117 24.2535 108 -0.48 45
IV.T1245.HHZ. 2017-04-05T14:25:30.16 0.6 undecidable manual S 90 19.9689 111 0.05 50
IV.T1219.EHZ. 2017-04-05T14:25:30.78 0.6 undecidable manual S 13 22.5552 109 -0.19 48
IV.T1212.EHZ. 2017-04-05T14:25:28.34 0.6 undecidable manual S 145 14.3745 118 -0.03 51
IV.T1217.EHZ. 2017-04-05T14:25:28.88 0.6 undecidable manual S 183 16.1727 115 -0.05 50
IV.T1219.EHZ. 2017-04-05T14:25:27.49 0.1 undecidable manual P 13 22.5552 109 0.01 100
IV.FDMO.HHZ. 2017-04-05T14:25:27.56 0.1 undecidable manual P 31 23.0547 108 -0.01 100
IV.T1214.EHZ. 2017-04-05T14:25:27.56 0.1 undecidable manual P 117 24.2535 108 -0.24 95
IV.T1245.HHZ. 2017-04-05T14:25:27.62 0.1 undecidable manual P 90 19.9689 111 0.64 86
IV.T1216.EHZ. 2017-04-05T14:25:26.69 0.6 undecidable manual S 59 7.1928 137 0.34 48
IV.T1212.EHZ. 2017-04-05T14:25:26.16 0.6 negative manual P 145 14.3745 118 0.19 49
IV.T1217.EHZ. 2017-04-05T14:25:26.37 0.1 undecidable manual P 183 16.1727 115 0.07 100
IV.T1216.EHZ. 2017-04-05T14:25:24.52 0.1 undecidable manual P 59 7.1928 137 -0.29 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1216.EHN. ML:1.0 0.0001965 1.02 AML other m 2017-04-05T14:25:27.91
IV.T1216.EHE. ML:1.0 0.00020050000000000002 1.28 AML other m 2017-04-05T14:25:27.91
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