Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 20-11-2016 and time 18:37:38 (Italy) in region 6 km NW Accumoli (RI)

A magnitude ML 2.0 earthquake occured in region: 6 km NW Accumoli (RI), on

  • 20-11-2016 17:37:38 (UTC)
  • 20-11-2016 18:37:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7450, 13.2180 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 6 667 667
Arquata del Tronto AP 7 1178 1845
Norcia PG 12 4957 6802
Amatrice RI 14 2657 9459
Montegallo AP 14 523 9982
Cittareale RI 15 482 10464
Acquasanta Terme AP 16 2916 13380
Cascia PG 17 3217 16597
Castelsantangelo sul Nera MC 18 281 16878
Montemonaco AP 19 604 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
48 Km E of Foligno (57155 inhabitants)
51 Km E of Terni (111501 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
87 Km W of Pescara (121014 inhabitants)
89 Km W of Chieti (51815 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
98 Km E of Viterbo (67173 inhabitants)
100 Km S of Ancona (100861 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 2.0 2016-11-20
17:37:38		 42.7453 13.2182 11 2016-11-20
17:47:51		 Sala Sismica INGV-Roma 34031861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-11-20 17:37:38 ± 0.03
Latitude 42.7453 ± 0.0018
Longitude 13.2182 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 34031861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 260
Semi-minor axis of confidence ellipse (meter) 138
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
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) 90
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58996
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 19
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.5
Num. used stations 3
Type of magnitude ML
Reference to an origin 34031861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-11-20 17:47:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T1219.EHZ. 2016-11-20T17:37:51.68 0.6 undecidable manual S 333 38.5281 50 0 48
IV.EL6.EHZ. 2016-11-20T17:37:50.48 0.1 undecidable manual P 352 65.49 50 0.07 90
IV.TERO.HHZ. 2016-11-20T17:37:50.47 0.3 undecidable manual S 113 34.2435 50 -0.06 72
IV.RM33.EHZ. 2016-11-20T17:37:48.50 0.6 undecidable manual S 181 26.2515 50 0.12 48
IV.FIAM.HHZ. 2016-11-20T17:37:48.38 0.6 undecidable manual P 189 53.6019 50 -0.19 45
IV.LNSS.HHZ. 2016-11-20T17:37:46.98 0.6 undecidable manual S 223 21.4674 50 -0.13 48
IV.MMO1.EHZ. 2016-11-20T17:37:46.44 0.6 undecidable manual S 27 19.2696 119 -0.05 49
IV.GUMA.HHZ. 2016-11-20T17:37:46.31 0.6 undecidable manual P 15 36.4413 50 0.37 45
IV.T1241.EHZ. 2016-11-20T17:37:46.86 0.6 undecidable manual S 55 21.2676 50 -0.2 47
IV.T1219.EHZ. 2016-11-20T17:37:46.13 0.6 undecidable manual P 333 38.5281 50 -0.13 47
IV.CSP1.EHZ. 2016-11-20T17:37:46.24 0.1 undecidable manual P 358 38.4282 50 0 96
IV.T1243.HHZ. 2016-11-20T17:37:46.57 0.6 undecidable manual S 106 19.5693 119 -0.01 50
IV.CESI.HHZ. 2016-11-20T17:37:46.55 0.6 undecidable manual P 319 38.4282 50 0.31 45
IV.TERO.HHZ. 2016-11-20T17:37:45.44 0.1 undecidable manual P 113 34.2435 50 -0.16 94
IV.T1247.HHZ. 2016-11-20T17:37:45.65 0.1 undecidable manual P 169 34.3434 50 0.04 96
IV.SMA1.EHZ. 2016-11-20T17:37:45.29 0.6 undecidable manual S 143 15.873 124 -0.22 48
IV.T1245.HHZ. 2016-11-20T17:37:44.76 0.6 undecidable manual S 349 12.5763 130 0.17 48
IV.T1218.EHZ. 2016-11-20T17:37:44.30 0.6 undecidable manual S 225 11.877 132 -0.09 49
IV.NRCA.HNZ. 2016-11-20T17:37:44.30 0.3 undecidable manual S 319 12.9759 130 -0.38 70
IV.RM33.EHZ. 2016-11-20T17:37:44.35 0.1 undecidable manual P 181 26.2515 50 0 98
IV.T1256.HHZ. 2016-11-20T17:37:44.70 0.6 undecidable manual P 1 28.9488 50 -0.08 48
IV.T1216.EHZ. 2016-11-20T17:37:43.60 0.1 undecidable manual P 315 22.8549 50 -0.24 94
IV.T1243.HHZ. 2016-11-20T17:37:43.27 0.1 undecidable manual P 106 19.5693 119 -0.04 98
IV.LNSS.HHZ. 2016-11-20T17:37:43.78 0.3 undecidable manual P 223 21.4674 50 0.16 72
IV.MMO1.EHZ. 2016-11-20T17:37:43.30 0.1 undecidable manual P 27 19.2696 119 0.04 99
IV.T1241.EHZ. 2016-11-20T17:37:43.76 0.3 undecidable manual P 55 21.2676 50 0.17 72
IV.SMA1.EHZ. 2016-11-20T17:37:42.88 0.3 undecidable manual P 143 15.873 124 0.18 72
IV.T1245.HHZ. 2016-11-20T17:37:42.28 0.1 undecidable manual P 349 12.5763 130 0.12 98
IV.T1218.EHZ. 2016-11-20T17:37:42.21 0.1 undecidable manual P 225 11.877 132 0.16 97
IV.NRCA.HNZ. 2016-11-20T17:37:42.24 0.1 undecidable manual P 319 12.9759 130 0.02 100
IV.VIVA.HHZ. 2016-11-20T17:37:39.02 3.0 negative manual P -0.11 0
IV.PP3.EHZ. 2016-11-20T17:37:36.36 3.0 negative manual P -0.03 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.3 0.00011975 0.28 AML other m 2016-11-20T17:37:48.60
IV.RM33.EHE. ML:1.3 0.00010018241 0.1408 AML other m 2016-11-20T17:37:48.92
IV.T1218.HNE. ML:1.6 0.000447 0.2 AML other m 2016-11-20T17:37:44.70
IV.T1218.HNN. ML:2.2 0.001805 0.16 AML other m 2016-11-20T17:37:44.85
IV.T1218.EHN. ML:2.2 0.0016273275000000002 0.128 AML other m 2016-11-20T17:37:44.84
IV.VIVA.HHE. ML:2.4 0.0002055 1.02 AML other m 2016-11-20T17:38:00.09
IV.VIVA.HHN. ML:2.5 0.0002465 0.22 AML other m 2016-11-20T17:38:11.17
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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