Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-10-2016 and time 05:45:29 (UTC) in region 2 km SW Accumoli (RI)

A magnitude ML 2.0 earthquake occured in region: 2 km SW Accumoli (RI), on

  • 31-10-2016 05:45:29 (UTC)
  • 31-10-2016 06:45:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6800, 13.2360 at 13 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 2 667 667
Amatrice RI 7 2657 3324
Cittareale RI 9 482 3806
Arquata del Tronto AP 12 1178 4984
Norcia PG 17 4957 9941
Montereale AQ 17 2581 12522
Acquasanta Terme AP 17 2916 15438
Campotosto AQ 18 542 15980
Capitignano AQ 19 665 16645
Cascia PG 19 3217 19862
Montegallo AP 20 523 20385

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
39 Km NW of L'Aquila (69753 inhabitants)
50 Km E of Terni (111501 inhabitants)
53 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
84 Km W of Pescara (121014 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
85 Km W of Chieti (51815 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
97 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
Bulletin
Rev1000 		ML 2.0 2016-10-31
05:45:29		 42.6805 13.236 13 2019-02-12
14:03:28		 Bollettino Sismico Italiano INGV 51538051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 05:45:29 ± 0.05
Latitude 42.6805 ± 0.0027
Longitude 13.2360 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 51538051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 57
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 217
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 52
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) 0.66640
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 30
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 51538051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-11-02 10:38:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRSN.EHZ. 2016-10-31T05:46:13.99 3.0 undecidable manual Sn -0.89 0
IV.T0110.HHZ. 2016-10-31T05:45:50.40 1.0 undecidable manual S 138 66.7776 92 0.18 22
IV.ARVD.HHZ. 2016-10-31T05:45:49.99 0.6 undecidable manual S 0.34 1.03
IV.VCEL.EHN. 2016-10-31T05:45:48.80 1.0 undecidable manual S 122 58.6968 92 0.73 19
IV.MGAB.HHZ. 2016-10-31T05:45:48.99 0.6 undecidable manual S -2.98 0
IV.FAGN.HHZ. 2016-10-31T05:45:47.40 0.6 undecidable manual S 148 54.1014 92 0.56 41
IV.CESX.HHZ. 2016-10-31T05:45:47.50 1.0 undecidable manual S 262 53.6019 92 0.8 19
IV.OFFI.HHZ. 2016-10-31T05:45:46.60 1.0 undecidable manual S 52 46.2204 93 1.86 10
IV.FIAM.HHN. 2016-10-31T05:45:44.80 0.1 undecidable manual S 192 46.8198 93 -0.08 92
IV.EL6.EHZ. 2016-10-31T05:45:43.99 1.0 undecidable manual S 0.44 0.52
IV.ATCC.EHZ. 2016-10-31T05:45:43.20 0.3 undecidable manual P 319 73.9704 91 0.44 61
IV.GIGS.HHZ. 2016-10-31T05:45:42.10 0.1 undecidable manual S 132 37.3293 94 -0.27 90
MN.AQU.HLZ. 2016-10-31T05:45:42.80 0.6 undecidable manual S 159 38.7279 93 0.05 48
IV.T1211.EHZ. 2016-10-31T05:45:41.60 0.1 undecidable manual S 242 35.1426 94 -0.18 93
IV.SNTG.HHZ. 2016-10-31T05:45:41.49 0.1 undecidable manual P 339 68.0763 92 -0.36 85
IV.INTR.HHZ. 2016-10-31T05:45:41.99 3.0 undecidable manual P 0.41 0
IV.VIVA.HHZ. 2016-10-31T05:45:41.98 3.0 negative manual P -1.65 0
IV.T0110.HHZ. 2016-10-31T05:45:41.65 0.3 undecidable manual P 138 66.7776 92 0 68
IV.CESX.HHZ. 2016-10-31T05:45:40.02 0.1 undecidable manual P 262 53.6019 92 0.41 86
IV.T1215.EHZ. 2016-10-31T05:45:40.80 0.1 undecidable manual S 294 32.8449 94 -0.37 90
IV.VCEL.EHN. 2016-10-31T05:45:40.60 0.1 undecidable manual P 122 58.6968 92 0.19 89
IV.ASSB.HHZ. 2016-10-31T05:45:40.71 0.1 undecidable manual P 311 61.7937 92 -0.16 89
IV.TERO.HHZ. 2016-10-31T05:45:40.20 0.1 undecidable manual S 102 30.6471 95 -0.4 89
IV.T1247.HHZ. 2016-10-31T05:45:39.70 0.1 undecidable manual S 169 26.9508 96 0.08 97
IV.FAGN.HHZ. 2016-10-31T05:45:39.44 0.3 undecidable manual P 148 54.1014 92 -0.25 66
IV.MMO1.HNZ. 2016-10-31T05:45:39.10 0.1 undecidable manual S 17 25.3524 97 -0.09 97
IV.OFFI.HHZ. 2016-10-31T05:45:39.48 0.1 undecidable manual P 52 46.2204 93 1 69
IV.T1217.EHZ. 2016-10-31T05:45:38.90 0.1 undecidable manual S 278 25.0527 97 -0.21 94
IV.T1246.HHN. 2016-10-31T05:45:38.50 0.1 undecidable manual S 117 23.5542 98 -0.21 94
IV.T1241.EHZ. 2016-10-31T05:45:38.90 0.1 undecidable manual S 39 25.1526 97 -0.23 94
IV.FIAM.HHN. 2016-10-31T05:45:38.52 0.1 undecidable manual P 192 46.8198 93 -0.05 93
IV.RM33.EHZ. 2016-10-31T05:45:37.30 0.1 undecidable manual S 185 19.0698 103 -0.24 94
IV.ARRO.EHZ. 2016-10-31T05:45:37.53 0.6 undecidable manual P 254 40.0266 93 0.01 48
MN.AQU.HLZ. 2016-10-31T05:45:37.34 0.6 undecidable manual P 159 38.7279 93 0.01 48
IV.LNSS.HHZ. 2016-10-31T05:45:37.20 0.1 undecidable manual S 242 18.1707 105 -0.09 98
IV.GIGS.HHZ. 2016-10-31T05:45:36.88 0.1 undecidable manual P 132 37.3293 94 -0.23 91
IV.T1215.EHZ. 2016-10-31T05:45:36.25 0.1 undecidable manual P 294 32.8449 94 -0.17 94
IV.T1243.HHZ. 2016-10-31T05:45:36.80 0.1 undecidable manual S 84 17.3715 106 -0.3 94
IV.T1211.EHZ. 2016-10-31T05:45:36.75 0.1 undecidable manual P 242 35.1426 94 -0.03 96
IV.MMO1.HNZ. 2016-10-31T05:45:35.36 0.1 undecidable manual P 17 25.3524 97 0.08 96
IV.TERO.HHZ. 2016-10-31T05:45:35.99 0.1 undecidable manual P 102 30.6471 95 -0.1 95
IV.T1247.HHZ. 2016-10-31T05:45:35.63 0.1 undecidable manual P 169 26.9508 96 0.11 96
IV.T1246.HHN. 2016-10-31T05:45:35.02 0.1 undecidable manual P 117 23.5542 98 0.02 98
IV.T1217.EHZ. 2016-10-31T05:45:35.25 0.1 undecidable manual P 278 25.0527 97 0.02 98
IV.T1241.EHZ. 2016-10-31T05:45:35.31 0.1 undecidable manual P 39 25.1526 97 0.07 97
IV.RM33.EHZ. 2016-10-31T05:45:34.46 0.1 undecidable manual P 185 19.0698 103 0.14 97
IV.LNSS.HHZ. 2016-10-31T05:45:34.37 0.6 undecidable manual P 242 18.1707 105 0.19 48
IV.T1299.HNN. 2016-10-31T05:45:34.70 0.1 undecidable manual S 144 6.3936 146 0.01 100
IV.T1243.HHZ. 2016-10-31T05:45:34.10 0.1 undecidable manual P 84 17.3715 106 0.03 99
IV.T1204.EHZ. 2016-10-31T05:45:34.50 0.1 undecidable manual S 94 6.5934 145 -0.22 98
IV.T1201.HNN. 2016-10-31T05:45:34.30 0.1 undecidable manual S 155 2.8971 164 0.02 100
IV.SMA1.EHZ. 2016-10-31T05:45:33.13 0.1 undecidable manual P 124 9.7791 130 0.1 98
IV.T1201.HNN. 2016-10-31T05:45:32.65 0.1 undecidable manual P 155 2.8971 164 0.2 97
IV.T1299.HNN. 2016-10-31T05:45:32.91 0.1 undecidable manual P 144 6.3936 146 0.23 96
IV.T1204.EHZ. 2016-10-31T05:45:32.91 0.1 undecidable manual P 94 6.5934 145 0.21 96
IV.FEMA.HNZ. 2016-10-31T05:45:31.37 3.0 undecidable manual P 0
IV.GUMA.HHZ. 2016-10-31T05:45:29.95 3.0 negative manual P 0.36 0
IV.T1216.EHZ. 2016-10-31T05:45:27.62 3.0 undecidable manual P 0.18 0
IV.T1245.HNZ. 2016-10-31T05:45:25.75 3.0 positive manual P -0.34 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1204.EHN. ML:0.0 0.010075570499999999 0.0832 AML other m 2016-10-31T05:45:34.68
IV.T1204.EHE. ML:0.0 0.005491431000000001 0.08 AML other m 2016-10-31T05:45:34.78
IV.SMA1.EHN. ML:0.0 0.0014971385 0.1376 AML other m 2016-10-31T05:45:36.03
IV.SMA1.EHE. ML:0.0 0.00133912925 0.0992 AML other m 2016-10-31T05:45:36.06
IV.RM33.HNN. ML:0.0 0.002071447 0.2816 AML other m 2016-10-31T05:45:37.82
IV.RM33.EHN. ML:0.0 0.002037279 0.2816 AML other m 2016-10-31T05:45:37.83
IV.RM33.HNE. ML:0.0 0.0023070620000000003 0.2016 AML other m 2016-10-31T05:45:39.09
IV.RM33.EHE. ML:0.0 0.0022145175 0.1984 AML other m 2016-10-31T05:45:39.10
IV.T1217.HNN. ML:0.0 0.00051016595 0.128 AML other m 2016-10-31T05:45:40.43
IV.T1217.HNE. ML:0.0 0.0005839636 0.08 AML other m 2016-10-31T05:45:39.65
IV.TERO.HHN. ML:0.0 0.0007397748 0.1024 AML other m 2016-10-31T05:45:41.20
IV.TERO.HHE. ML:0.0 0.0006628427999999999 0.0608 AML other m 2016-10-31T05:45:40.43
IV.TERO.HNE. ML:0.0 0.0004852145 0.0608 AML other m 2016-10-31T05:45:40.43
IV.TERO.HNN. ML:0.0 0.0006272374499999999 0.1024 AML other m 2016-10-31T05:45:41.15
IV.GIGS.HHE. ML:0.0 0.00012749480000000002 0.08 AML other m 2016-10-31T05:45:42.66
IV.GIGS.HHN. ML:0.0 0.00011290148 0.1216 AML other m 2016-10-31T05:45:42.70
IV.OFFI.HHN. ML:0.0 0.0007309884500000001 0.4192 AML other m 2016-10-31T05:45:48.51
IV.OFFI.HHE. ML:0.0 0.00045074084999999995 0.32 AML other m 2016-10-31T05:45:49.12
IV.T1241.EHE. ML:0.0 0.00030459645 0.1408 AML other m 2016-10-31T05:45:39.33
IV.T1241.EHN. ML:0.0 0.00036326254999999996 0.1792 AML other m 2016-10-31T05:45:39.07
IV.SNTG.HHE. ML:0.0 0.00008162959 0.1408 AML other m 2016-10-31T05:45:53.26
IV.SNTG.HNE. ML:2.4 0.000435 1.82 AML other m 2016-10-31T05:46:14.95
IV.SNTG.HNN. ML:2.4 0.00041600000000000003 0.18 AML other m 2016-10-31T05:46:15.38
IV.SNTG.HHN. ML:0.0 0.00006724673000000001 0.5792 AML other m 2016-10-31T05:45:52.72
IV.ASSB.HHE. ML:1.9 0.00014749999999999998 1.6 AML other m 2016-10-31T05:46:17.10
IV.ASSB.HHN. ML:0.0 0.00012459527499999998 0.1792 AML other m 2016-10-31T05:45:51.59
IV.ATCC.EHN. ML:0.0 0.000078601065 0.4 AML other m 2016-10-31T05:45:54.51
IV.ATCC.EHE. ML:0.0 0.000101151815 0.3808 AML other m 2016-10-31T05:45:53.73
IV.GUMA.HNE. ML:2.1 0.0004080878 0.3808 AML other m 2016-10-31T05:45:37.28
IV.GUMA.HNN. ML:2.2 0.00045817324999999996 0.2688 AML other m 2016-10-31T05:45:37.69
IV.GUMA.HHE. ML:2.3 0.00062160625 0.2016 AML other m 2016-10-31T05:45:35.68
IV.GUMA.HHN. ML:2.2 0.0005726005000000001 0.3008 AML other m 2016-10-31T05:45:37.27
IV.T1217.EHN. ML:2.0 0.0004982108 0.128 AML other m 2016-10-31T05:45:40.43
IV.T1217.EHE. ML:2.0 0.0005739355000000001 0.08 AML other m 2016-10-31T05:45:39.61
IV.T1241.HNE. ML:1.8 0.0003869499999999988 0.5728 AML other m 2016-10-31T05:45:41.94
IV.T1241.HNN. ML:1.8 0.00039099999999999823 0.1792 AML other m 2016-10-31T05:45:39.16
IV.T1215.HNE. ML:1.6 0.0001559028 0.192 AML other m 2016-10-31T05:45:41.96
IV.T1215.EHE. ML:1.6 0.00016685095 0.208 AML other m 2016-10-31T05:45:41.87
IV.T1215.EHN. ML:1.5 0.00013099015 0.08 AML other m 2016-10-31T05:45:42.16
IV.T1215.HNN. ML:1.5 0.0001227157 0.08 AML other m 2016-10-31T05:45:43.34
IV.ARRO.EHE. ML:1.9 0.0002913926 0.16 AML other m 2016-10-31T05:45:44.25
IV.INTR.HHE. ML:1.4 0.00003049052 0.8416 AML other m 2016-10-31T05:45:58.55
IV.INTR.HNE. ML:0.0 0.0000000798487 0.9696 AML other m 2016-10-31T05:45:52.26
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
Waveforms Seismic signals in miniseed + resp format Download