Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 05-04-2017 and time 17:46:12 (Italy) in region 4 km NW Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 4 km NW Accumoli (RI), on

  • 05-04-2017 15:46:12 (UTC)
  • 05-04-2017 17:46:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7150, 13.2060 at 11 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
Accumoli RI 4 667 667
Arquata del Tronto AP 10 1178 1845
Cittareale RI 11 482 2327
Amatrice RI 12 2657 4984
Norcia PG 13 4957 9941
Cascia PG 16 3217 13158
Montegallo AP 18 523 13681
Acquasanta Terme AP 18 2916 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
43 Km NW of L'Aquila (69753 inhabitants)
49 Km E of Terni (111501 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
80 Km SE of Perugia (166134 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
87 Km W of Pescara (121014 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km W of Chieti (51815 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 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 1.7 2017-04-05
15:46:12		 42.7147 13.2062 11 2017-04-05
17:29:22		 Sala Sismica INGV-Roma 43427241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-05 15:46:12 ± 0.11
Latitude 42.7147 ± 0.0054
Longitude 13.2062 ± 0.0061
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 43427241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 630
Semi-minor axis of confidence ellipse (meter) 400
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 326
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.22303
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 43427241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-05 17:29:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
TV.SF04.EHZ. 2017-04-05T15:46:40.47 3.0 undecidable manual Sn 0.27 0
IV.APEC.HHZ. 2017-04-05T15:46:34.81 3.0 undecidable manual Sg 7.39 0
IV.VOBA.HNZ. 2017-04-05T15:46:30.40 3.0 positive manual Pg 20.83 0
IV.T1216.EHZ. 2017-04-05T15:46:21.29 0.3 undecidable manual S 322 24.753 90 -0.03 73
IV.T1217.EHZ. 2017-04-05T15:46:20.49 0.1 undecidable manual S 269 22.3554 90 -0.2 95
IV.SBPO.HNZ. 2017-04-05T15:46:20.23 3.0 positive manual Pg 17.73 0
IV.T1241.EHZ. 2017-04-05T15:46:20.89 0.3 undecidable manual S 49 24.1536 90 -0.26 68
IV.T1212.EHZ. 2017-04-05T15:46:18.13 0.1 undecidable manual S 287 13.7751 91 -0.26 95
IV.T1241.EHZ. 2017-04-05T15:46:17.29 0.1 undecidable manual P 49 24.1536 90 -0.1 94
IV.T1216.EHZ. 2017-04-05T15:46:17.95 0.1 undecidable manual P 322 24.753 90 0.46 88
IV.T1217.EHZ. 2017-04-05T15:46:17.10 0.1 undecidable manual P 269 22.3554 90 -0.02 98
IV.T1218.EHZ. 2017-04-05T15:46:16.97 0.1 undecidable manual S 236 8.88 125 -0.22 96
IV.T1214.EHZ. 2017-04-05T15:46:16.46 0.1 undecidable manual S 2 4.995 148 -0.01 100
IV.T1218.EHZ. 2017-04-05T15:46:15.28 0.1 undecidable manual P 236 8.88 125 0.18 96
IV.T1212.EHZ. 2017-04-05T15:46:15.89 0.1 undecidable manual P 287 13.7751 91 0.1 97
IV.T1214.EHZ. 2017-04-05T15:46:14.96 0.1 undecidable manual P 2 4.995 148 0.28 95
IV.MILN.HNZ. 2017-04-05T15:46:13.67 3.0 undecidable manual Pn -6.27 0
SI.LUSI.HHZ. 2017-04-05T15:46:07.11 3.0 positive manual Pn -0.87 0
BA.PZUN.HHZ. 2017-04-05T15:46:07.18 3.0 undecidable manual Sg 6.82 0
ST.DOSS.HHZ. 2017-04-05T15:46:04.46 3.0 negative manual Pn -0.95 0
IV.TRIF.HHZ. 2017-04-05T15:46:02.06 3.0 negative manual Pg 4.77 0
IV.IMOL.HNZ. 2017-04-05T15:45:59.06 3.0 negative manual Pg 7.43 0
NI.POLC.HHZ. 2017-04-05T15:45:57.36 3.0 positive manual Pn 0.96 0
IV.BIOG.HNZ. 2017-04-05T15:45:54.61 3.0 undecidable manual Sg -1.6 0
OX.SABO.HHZ. 2017-04-05T15:45:48.75 3.0 negative manual Pn 0.52 0
IV.VIVA.HHZ. 2017-04-05T15:45:46.24 3.0 positive manual Pg 4.67 0
IV.VENL.HNZ. 2017-04-05T15:45:46.74 3.0 undecidable manual Pn -5.58 0
IV.CSNT.HHZ. 2017-04-05T15:45:45.84 3.0 negative manual Pn -7.79 0
SL.LJU.BHZ. 2017-04-05T15:45:43.52 3.0 positive manual Pn -0.08 0
IV.CPGN.EHZ. 2017-04-05T15:45:41.36 3.0 negative manual Pn -2.76 0
IV.SACS.HHZ. 2017-04-05T15:45:40.22 3.0 undecidable manual Pn -6.98 0
IV.ATVO.HHZ. 2017-04-05T15:45:36.87 3.0 negative manual Pn -5.51 0
IV.PIEI.HHZ. 2017-04-05T15:45:36.42 3.0 positive manual P -4.94 0
IV.ATFO.HHZ. 2017-04-05T15:45:35.04 3.0 negative manual P -5.67 0
SL.BOJS.BHZ. 2017-04-05T15:45:35.37 3.0 undecidable manual Pn 1.74 0
IV.ORI.HHZ. 2017-04-05T15:45:34.04 3.0 positive manual Pg 1.18 0
IV.MPAG.EHZ. 2017-04-05T15:45:34.70 3.0 undecidable manual P -4.67 0
IV.ATCC.EHZ. 2017-04-05T15:45:33.80 3.0 positive manual P -6.04 0
IV.FOSV.EHZ. 2017-04-05T15:45:32.63 3.0 undecidable manual P -6.1 0
IV.ARVD.HHZ. 2017-04-05T15:45:31.98 3.0 positive manual P -5.29 0
IV.FSSB.HHZ. 2017-04-05T15:45:28.26 3.0 negative manual Pn -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1212.EHE. ML:1.5 0.00029600000000000004 1.22 AML other m 2017-04-05T15:45:49.66
IV.T1212.EHN. ML:1.5 0.0002985 0.66 AML other m 2017-04-05T15:46:47.40
IV.T1214.EHE. ML:1.7 0.0007930000000000001 1.44 AML other m 2017-04-05T15:46:42.89
IV.T1214.HNE. ML:1.7 0.0008165 1.44 AML other m 2017-04-05T15:46:42.89
IV.T1214.HNN. ML:1.8 0.001085 0.68 AML other m 2017-04-05T15:46:42.88
IV.T1214.EHN. ML:1.8 0.0010400000000000001 0.68 AML other m 2017-04-05T15:46:42.88
IV.T1218.HNE. ML:1.6 0.000495 0.12 AML other m 2017-04-05T15:46:17.58
IV.T1218.EHE. ML:1.6 0.0004435 0.14 AML other m 2017-04-05T15:46:17.52
IV.T1218.HNN. ML:1.8 0.0009255 0.16 AML other m 2017-04-05T15:46:17.57
IV.T1218.EHN. ML:1.8 0.0009405 0.14 AML other m 2017-04-05T15:46:17.58
IV.T1299.EHN. ML:1.6 0.000398 0.98 AML other m 2017-04-05T15:46:46.10
IV.T1299.EHE. ML:1.3 0.000252 1.4 AML other m 2017-04-05T15:46:46.04
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