Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 20-11-2016 and time 22:42:16 (Italy) in region 3 km N Valle Castellana (TE)

A magnitude ML 1.7 earthquake occured in region: 3 km N Valle Castellana (TE), on

  • 20-11-2016 21:42:16 (UTC)
  • 20-11-2016 22:42:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7640, 13.5030 at 21 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
Valle Castellana TE 3 977 977
Acquasanta Terme AP 8 2916 3893
Rocca Santa Maria TE 9 537 4430
Roccafluvione AP 11 2010 6440
Ascoli Piceno AP 12 49407 55847
Folignano AP 12 9241 65088
Venarotta AP 13 2066 67154
Civitella del Tronto TE 13 5116 72270
Palmiano AP 16 196 72466
Campli TE 16 7209 79675
Cortino TE 16 656 80331
Montegallo AP 16 523 80854
Arquata del Tronto AP 17 1178 82032
Maltignano AP 17 2401 84433
Torricella Sicura TE 17 2641 87074
Sant'Egidio alla Vibrata TE 19 9811 96885

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Teramo (54892 inhabitants)
47 Km N of L'Aquila (69753 inhabitants)
60 Km W of Montesilvano (53738 inhabitants)
67 Km NW of Pescara (121014 inhabitants)
69 Km E of Foligno (57155 inhabitants)
71 Km NW of Chieti (51815 inhabitants)
74 Km E of Terni (111501 inhabitants)
95 Km S of Ancona (100861 inhabitants)
98 Km E of Perugia (166134 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 2016-11-20
21:42:16		 42.7642 13.5032 21 2016-11-20
22:01:40		 Sala Sismica INGV-Roma 34053291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-11-20 21:42:16 ± 0.12
Latitude 42.7642 ± 0.0036
Longitude 13.5032 ± 0.0061
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 34053291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 506
Semi-minor axis of confidence ellipse (meter) 210
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39390
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 34053291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-11-20 22:01:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2016-11-20T21:42:39.99 3.0 undecidable manual S -2.66 0
IV.COR1.EHZ. 2016-11-20T21:42:34.92 3.0 undecidable manual P -0.63 0
IV.SRES.HHZ. 2016-11-20T21:42:31.94 3.0 negative manual P 0.04 0
IV.CSP1.EHZ. 2016-11-20T21:42:31.23 0.6 undecidable manual S 326 43.7229 107 0.42 43
IV.T1218.EHZ. 2016-11-20T21:42:28.37 0.6 undecidable manual S 252 33.3444 113 0.17 47
IV.T1245.HHZ. 2016-11-20T21:42:27.04 0.6 undecidable manual S 292 27.6501 119 0.2 47
IV.T0110.HHZ. 2016-11-20T21:42:27.78 3.0 negative manual P 3.12 0
IV.NRCA.HHZ. 2016-11-20T21:42:27.94 0.6 undecidable manual S 284 32.5452 114 -0.09 48
IV.FAGN.HHZ. 2016-11-20T21:42:26.75 3.0 positive manual P 3.49 0
IV.SMA1.EHZ. 2016-11-20T21:42:25.08 0.3 undecidable manual S 223 20.1687 129 -0.1 72
IV.MMO1.EHZ. 2016-11-20T21:42:25.15 0.6 undecidable manual S 316 20.7681 128 -0.15 48
IV.CSP1.EHZ. 2016-11-20T21:42:24.65 0.6 negative manual P 326 43.7229 107 -0.03 47
IV.FDMO.HHZ. 2016-11-20T21:42:24.84 3.0 undecidable manual P -0.67 0
IV.TERO.HHZ. 2016-11-20T21:42:24.83 0.6 undecidable manual S 152 17.6712 133 0.14 48
IV.T1216.EHZ. 2016-11-20T21:42:24.24 3.0 negative manual P -0.12 0
IV.T1243.HHZ. 2016-11-20T21:42:23.30 0.6 undecidable manual S 211 8.6802 154 0.05 50
IV.RM33.EHZ. 2016-11-20T21:42:23.49 3.0 undecidable manual P 2.48 0
IV.T1218.EHZ. 2016-11-20T21:42:23.05 0.1 undecidable manual P 252 33.3444 113 -0.13 94
IV.T1256.HHZ. 2016-11-20T21:42:23.37 3.0 negative manual P -0.6 0
IV.T1241.EHZ. 2016-11-20T21:42:23.43 0.6 undecidable manual S 330 11.7771 146 -0.23 48
IV.GIGS.HHZ. 2016-11-20T21:42:23.99 3.0 undecidable manual S -0.27 0
IV.NRCA.HHZ. 2016-11-20T21:42:22.97 0.1 negative manual P 284 32.5452 114 -0.1 95
IV.T1245.HHZ. 2016-11-20T21:42:22.42 0.1 negative manual P 292 27.6501 119 0.04 97
IV.MMO1.EHZ. 2016-11-20T21:42:21.42 0.1 undecidable manual P 316 20.7681 128 -0.08 98
IV.SMA1.EHZ. 2016-11-20T21:42:21.48 0.1 undecidable manual P 223 20.1687 129 0.05 98
IV.TERO.HHZ. 2016-11-20T21:42:21.20 0.1 undecidable manual P 152 17.6712 133 0.06 98
IV.T1241.EHZ. 2016-11-20T21:42:20.51 0.1 undecidable manual P 330 11.7771 146 -0.04 100
IV.T1243.HHZ. 2016-11-20T21:42:20.41 0.1 undecidable manual P 211 8.6802 154 0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.5 0.00008165 0.52 AML other m 2016-11-20T21:42:32.02
IV.FDMO.HHN. ML:1.6 0.0001166 0.2 AML other m 2016-11-20T21:42:49.81
IV.NRCA.HHE. ML:1.9 0.0002875 0.2 AML other m 2016-11-20T21:42:28.33
IV.NRCA.HHN. ML:1.7 0.0001805 0.68 AML other m 2016-11-20T21:42:29.03
IV.T1245.HHE. ML:1.9 0.00034399999999999996 0.68 AML other m 2016-11-20T21:42:27.24
IV.T1245.HHN. ML:1.8 0.0002925 0.14 AML other m 2016-11-20T21:42:27.50
IV.T1256.HHE. ML:1.5 0.00010545 1.16 AML other m 2016-11-20T21:42:50.05
IV.T1256.HHN. ML:1.3 0.00007325 0.5 AML other m 2016-11-20T21:42:29.39
IV.TERO.HNE. ML:1.9 0.0004375 0.34 AML other m 2016-11-20T21:42:24.92
IV.TERO.HHE. ML:1.9 0.00047099999999999996 0.34 AML other m 2016-11-20T21:42:24.92
IV.TERO.HNN. ML:1.6 0.00020905 0.7 AML other m 2016-11-20T21:42:25.07
IV.TERO.HHN. ML:1.6 0.0002365 0.72 AML other m 2016-11-20T21:42:25.06
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