Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 16-10-2016 and time 22:34:42 (UTC) in region 5 km W Arquata del Tronto (AP)

A magnitude ML 1.4 earthquake occured in region: 5 km W Arquata del Tronto (AP), on

  • 16-10-2016 22:34:42 (UTC)
  • 17-10-2016 00:34:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7790, 13.2330 at 12 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
Arquata del Tronto AP 5 1178 1178
Accumoli RI 9 667 1845
Montegallo AP 11 523 2368
Norcia PG 12 4957 7325
Castelsantangelo sul Nera MC 14 281 7606
Acquasanta Terme AP 15 2916 10522
Montemonaco AP 16 604 11126
Amatrice RI 17 2657 13783
Cittareale RI 19 482 14265
Cascia PG 19 3217 17482
Preci PG 19 724 18206
Ussita MC 20 444 18650

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
49 Km N of L'Aquila (69753 inhabitants)
54 Km E of Terni (111501 inhabitants)
78 Km E of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
90 Km NW of Chieti (51815 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km S of Ancona (100861 inhabitants)
97 Km NE 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 1.4 2016-10-16
22:34:42		 42.7793 13.2332 13 2016-10-16
22:45:41		 Sala Sismica INGV-Roma 30277541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-16 22:34:42 ± 0.05
Latitude 42.7793 ± 0.0018
Longitude 13.2332 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 30277541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 259
Semi-minor axis of confidence ellipse (meter) 111
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
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) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.08364
Epicentral distance of station farthest from the epicenter (degree) 0.37142
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 30277541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-10-16 22:45:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T1211.EHZ. 2016-10-16T22:34:56.50 0.1 undecidable manual S 229 41.2254 93 0.26 89
IV.GUMA.HHZ. 2016-10-16T22:34:54.60 0.3 undecidable manual S 15 32.5452 94 0.68 63
IV.TERO.HHZ. 2016-10-16T22:34:54.43 0.1 undecidable manual S 120 34.8429 94 -0.12 94
IV.T1215.EHZ. 2016-10-16T22:34:53.00 0.1 undecidable manual S 275 29.748 95 -0.2 94
IV.RM33.EHZ. 2016-10-16T22:34:53.36 0.1 undecidable manual S 183 30.0477 95 0.1 95
IV.LNSS.HHZ. 2016-10-16T22:34:52.12 0.3 undecidable manual S 219 25.0527 97 0.16 70
IV.T1217.EHZ. 2016-10-16T22:34:52.07 0.1 undecidable manual S 253 25.6521 96 -0.04 98
XO.AM05.EHZ. 2016-10-16T22:34:51.66 0.1 undecidable manual S 24 24.0537 97 -0.01 97
IV.T1211.EHZ. 2016-10-16T22:34:50.63 1.0 undecidable manual P 229 41.2254 93 0.08 23
IV.T1243.HHZ. 2016-10-16T22:34:50.50 0.1 undecidable manual S 118 19.7691 101 -0.05 98
IV.SMA1.EHZ. 2016-10-16T22:34:50.00 0.1 undecidable manual S 153 18.4704 103 -0.21 95
IV.T1216.EHZ. 2016-10-16T22:34:50.66 0.3 undecidable manual S 305 21.3675 99 -0.31 70
IV.MMO1.EHZ. 2016-10-16T22:34:49.39 0.3 undecidable manual S 30 15.3735 110 -0.01 74
IV.GUMA.HHZ. 2016-10-16T22:34:49.34 0.6 negative manual P 15 32.5452 94 0.13 48
IV.T1204.EHZ. 2016-10-16T22:34:49.06 0.3 undecidable manual S 149 13.2756 116 0.15 73
IV.TERO.HHZ. 2016-10-16T22:34:49.39 0.6 negative manual P 120 34.8429 94 -0.18 46
IV.MC2.EHZ. 2016-10-16T22:34:49.47 0.3 undecidable manual S 346 15.0738 111 0.12 74
IV.T1215.EHZ. 2016-10-16T22:34:48.57 1.0 negative manual P 275 29.748 95 -0.22 23
IV.NRCA.HHZ. 2016-10-16T22:34:48.30 0.3 undecidable manual S 302 11.3775 123 -0.17 73
IV.RM33.EHZ. 2016-10-16T22:34:48.73 0.6 positive manual P 183 30.0477 95 -0.1 48
IV.LNSS.HHZ. 2016-10-16T22:34:48.00 0.6 positive manual P 219 25.0527 97 -0.07 49
IV.T1217.EHZ. 2016-10-16T22:34:48.04 0.6 negative manual P 253 25.6521 96 -0.13 48
IV.T1245.HHZ. 2016-10-16T22:34:48.22 0.3 undecidable manual S 337 9.2796 132 0.19 73
IV.T1216.EHZ. 2016-10-16T22:34:47.34 0.6 positive manual P 305 21.3675 99 -0.16 48
XO.AM05.EHZ. 2016-10-16T22:34:47.89 0.3 negative manual P 24 24.0537 97 -0.02 73
IV.SMA1.EHZ. 2016-10-16T22:34:47.06 0.1 positive manual P 153 18.4704 103 0 99
IV.T1204.EHZ. 2016-10-16T22:34:46.50 0.1 positive manual P 149 13.2756 116 0.18 97
IV.MC2.EHZ. 2016-10-16T22:34:46.61 0.1 negative manual P 346 15.0738 111 0.04 100
IV.NRCA.HHZ. 2016-10-16T22:34:46.04 0.1 positive manual P 302 11.3775 123 -0.02 100
IV.T1243.HHZ. 2016-10-16T22:34:46.99 1.0 undecidable manual P 118 19.7691 101 -0.27 23
IV.MMO1.EHZ. 2016-10-16T22:34:46.46 1.0 undecidable manual P 30 15.3735 110 -0.14 24
IV.T1245.HHZ. 2016-10-16T22:34:45.87 1.0 undecidable manual P 337 9.2796 132 0.06 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
XO.AM05.EHE. ML:1.3 0.0001115 1.08 AML other m 2016-10-16T22:34:51.77
XO.AM05.EHN. ML:1.2 0.00009359999999999998 0.96 AML other m 2016-10-16T22:34:52.86
IV.GUMA.HHN. ML:1.8 0.0002395 0.26 AML other m 2016-10-16T22:34:54.85
IV.GUMA.HHE. ML:1.6 0.000185 0.22 AML other m 2016-10-16T22:34:55.05
IV.LNSS.HHN. ML:1.4 0.0001325 0.26 AML other m 2016-10-16T22:34:52.39
IV.LNSS.HHE. ML:1.5 0.0001965 0.16 AML other m 2016-10-16T22:34:52.79
IV.NRCA.HHN. ML:1.8 0.0006285 0.16 AML other m 2016-10-16T22:34:48.54
IV.NRCA.HHE. ML:1.8 0.00074 0.98 AML other m 2016-10-16T22:34:48.45
IV.RM33.EHN. ML:1.4 0.0001275 0.26 AML other m 2016-10-16T22:34:53.75
IV.RM33.EHE. ML:1.4 0.00010455000000000001 0.16 AML other m 2016-10-16T22:34:54.44
IV.SMA1.EHE. ML:1.0 0.00007285 0.46 AML other m 2016-10-16T22:34:50.55
IV.SMA1.EHN. ML:1.0 0.00007730000000000001 1.24 AML other m 2016-10-16T22:34:50.95
IV.T1245.HHE. ML:1.7 0.0005600000000000001 0.84 AML other m 2016-10-16T22:34:48.40
IV.T1245.HHN. ML:1.6 0.000521 0.12 AML other m 2016-10-16T22:34:48.42
IV.TERO.HHN. ML:0.9 0.00003095 0.1 AML other m 2016-10-16T22:34:54.89
IV.TERO.HHE. ML:0.9 0.000029449999999999998 1.24 AML other m 2016-10-16T22:34:55.71
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