Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 15-12-2016 and time 23:15:20 (Italy) in region 7 km NW Accumoli (RI)

A magnitude ML 1.4 earthquake occured in region: 7 km NW Accumoli (RI), on

  • 15-12-2016 22:15:20 (UTC)
  • 15-12-2016 23:15:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7350, 13.1800 at 17 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 7 667 667
Norcia PG 10 4957 5624
Arquata del Tronto AP 11 1178 6802
Cittareale RI 13 482 7284
Cascia PG 14 3217 10501
Amatrice RI 15 2657 13158
Montegallo AP 17 523 13681
Castelsantangelo sul Nera MC 18 281 13962
Acquasanta Terme AP 19 2916 16878
Preci PG 20 724 17602

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
46 Km SE of Foligno (57155 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
48 Km E of Terni (111501 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km W of Pescara (121014 inhabitants)
91 Km NE of Tivoli (56533 inhabitants)
92 Km W of Chieti (51815 inhabitants)
95 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 1.4 2016-12-15
22:15:20		 42.735 13.1798 17 2016-12-15
22:21:18		 Sala Sismica INGV-Roma 36853571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-12-15 22:15:20 ± 0.27
Latitude 42.7350 ± 0.0090
Longitude 13.1798 ± 0.0110
Depth (km) 17 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 36853571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 879
Semi-minor axis of confidence ellipse (meter) 675
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 127
Circular confidence region, given by single value of horizontal uncertainty (meter) 880.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.60979
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations 5
Type of magnitude ML
Reference to an origin 36853571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-12-15 22:21:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SI.BOSI.HHZ. 2016-12-15T22:16:44.99 3.0 undecidable manual Sn 2.49 0
IV.IFIL.HHZ. 2016-12-15T22:16:30.57 3.0 undecidable manual Pg 11.41 0
IV.MNTV.HNZ. 2016-12-15T22:16:21.99 3.0 undecidable manual Sn 0.96 0
IV.PAOL.HHZ. 2016-12-15T22:16:14.99 3.0 undecidable manual Sn -4.02 0
IV.ZONE.HHZ. 2016-12-15T22:16:07.50 3.0 positive manual Pg 8.58 0
IV.EUCT.HNZ. 2016-12-15T22:16:03.37 3.0 negative manual Pn 1.83 0
IV.VIVA.HHZ. 2016-12-15T22:16:02.99 3.0 undecidable manual Sg 178.6878 3.32 0
IV.COLB.HHZ. 2016-12-15T22:15:57.70 3.0 negative manual Pg 8.93 0
IV.FVI.HHZ. 2016-12-15T22:15:56.91 3.0 undecidable manual Pn -1.47 0
IV.BRSN.EHZ. 2016-12-15T22:15:47.99 3.0 undecidable manual Sn -4.65 0
IV.VIVA.HHZ. 2016-12-15T22:15:41.63 3.0 positive manual Pg 178.6878 5.06 0
IV.SEI.HHZ. 2016-12-15T22:15:38.90 3.0 positive manual Pg 2.61 0
IV.ARVD.HHZ. 2016-12-15T22:15:37.99 3.0 undecidable manual Sg 0.34 0
IV.T1215.EHZ. 2016-12-15T22:15:29.85 0.6 undecidable manual S 286 26.4513 111 -0.44 60
IV.T1243.HHZ. 2016-12-15T22:15:29.42 0.6 undecidable manual S 101 22.2555 117 0.14 65
IV.RM33.EHZ. 2016-12-15T22:15:29.20 0.6 undecidable manual S 174 25.2525 113 -0.8 53
IV.ARRO.EHZ. 2016-12-15T22:15:28.96 3.0 positive manual Pg 0.95 0
IV.T1245.HHZ. 2016-12-15T22:15:28.07 0.6 undecidable manual S 3 13.4754 134 0.71 56
IV.MMO1.EHZ. 2016-12-15T22:15:28.99 0.6 undecidable manual S 33 21.7671 117 -0.18 63
IV.LNSS.HHZ. 2016-12-15T22:15:28.45 0.6 undecidable manual S 218 18.5703 123 0.03 66
IV.TERO.HHZ. 2016-12-15T22:15:28.09 3.0 undecidable manual Pn 1.03 0
IV.NRCA.HHZ. 2016-12-15T22:15:27.65 0.6 undecidable manual S 334 12.1767 137 0.54 60
IV.SMA1.EHZ. 2016-12-15T22:15:27.73 0.6 undecidable manual S 132 17.1717 126 -0.39 61
IV.T1211.EHZ. 2016-12-15T22:15:27.86 3.0 undecidable manual Pg -0.28 0
IV.MC2.EHZ. 2016-12-15T22:15:27.75 0.6 undecidable manual S 2 19.5693 121 -0.9 50
IV.RM33.EHZ. 2016-12-15T22:15:26.19 1.0 undecidable manual P 174 25.2525 113 0.22 31
IV.T1243.HHZ. 2016-12-15T22:15:26.20 1.0 undecidable manual P 101 22.2555 117 0.64 28
IV.T1218.EHZ. 2016-12-15T22:15:26.19 0.6 undecidable manual S 216 8.9799 147 -0.39 62
IV.SMA1.EHZ. 2016-12-15T22:15:25.24 0.6 negative manual P 132 17.1717 126 0.36 62
IV.ASSB.HHZ. 2016-12-15T22:15:25.64 3.0 negative manual P 0.03 0
IV.MC2.EHZ. 2016-12-15T22:15:25.47 0.6 positive manual P 2 19.5693 121 0.28 63
IV.T1215.EHZ. 2016-12-15T22:15:25.57 0.6 negative manual P 286 26.4513 111 -0.57 58
IV.CING.HHZ. 2016-12-15T22:15:25.81 3.0 negative manual Pg 2.15 0
IV.LNSS.HHZ. 2016-12-15T22:15:25.63 0.3 positive manual P 218 18.5703 123 0.57 87
IV.MMO1.EHZ. 2016-12-15T22:15:25.20 0.6 negative manual P 33 21.7671 117 -0.29 62
IV.FIAM.HHZ. 2016-12-15T22:15:24.78 3.0 negative manual Pn -5.43 0
IV.NRCA.HHZ. 2016-12-15T22:15:24.27 0.3 negative manual P 334 12.1767 137 -0.03 100
IV.T1245.HHZ. 2016-12-15T22:15:24.29 1.0 undecidable manual P 3 13.4754 134 -0.16 32
IV.T1218.EHZ. 2016-12-15T22:15:24.42 0.3 undecidable manual P 216 8.9799 147 0.42 93
IV.EL6.EHZ. 2016-12-15T22:15:23.83 3.0 negative manual Pn 0.08 0
IV.SNTG.HHZ. 2016-12-15T22:15:22.32 3.0 undecidable manual Pn -1.8 0
IV.T1216.EHZ. 2016-12-15T22:15:21.63 3.0 negative manual Pn -3.51 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.0 0.00007165 1.1 AML other m 2016-12-15T22:15:29.22
IV.LNSS.HHN. ML:1.2 0.00009475 0.68 AML other m 2016-12-15T22:15:28.83
IV.NRCA.HHN. ML:1.3 0.000155 0.22 AML other m 2016-12-15T22:15:27.92
IV.NRCA.HHE. ML:1.4 0.00020600000000000002 1.28 AML other m 2016-12-15T22:15:29.56
IV.T1216.EHE. ML:1.4 0.00014915 1.36 AML other m 2016-12-15T22:15:27.92
IV.T1216.EHN. ML:1.5 0.00017549999999999998 0.24 AML other m 2016-12-15T22:15:26.29
IV.T1245.HHE. ML:1.5 0.000232 0.64 AML other m 2016-12-15T22:15:49.83
IV.T1245.HHN. ML:1.4 0.0001965 0.22 AML other m 2016-12-15T22:15:50.26
IV.VIVA.HHN. ML:3.0 0.0009040000000000001 1.12 AML other m 2016-12-15T22:16:22.23
IV.VIVA.HHE. ML:3.2 0.00133 0.06 AML other m 2016-12-15T22:16:22.86
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