Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-10-2016 and time 06:43:56 (Italy) in region 3 km SW Accumoli (RI)

A magnitude ML 2.0 earthquake occured in region: 3 km SW Accumoli (RI), on

  • 31-10-2016 05:43:56 (UTC)
  • 31-10-2016 06:43:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6740, 13.2320 at 12 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 3 667 667
Amatrice RI 7 2657 3324
Cittareale RI 9 482 3806
Arquata del Tronto AP 12 1178 4984
Montereale AQ 17 2581 7565
Campotosto AQ 17 542 8107
Norcia PG 17 4957 13064
Capitignano AQ 18 665 13729
Acquasanta Terme AP 18 2916 16645
Cascia PG 19 3217 19862
Borbona RI 20 617 20479
Posta RI 20 694 21173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
49 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
05:43:56		 42.6742 13.2317 12 2019-02-12
14:03:28		 Bollettino Sismico Italiano INGV 51536421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 05:43:56 ± 0.05
Latitude 42.6742 ± 0.0027
Longitude 13.2317 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 51536421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 315
Semi-minor axis of confidence ellipse (meter) 165
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 51
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.74824
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 32
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 58
Type of magnitude ML
Reference to an origin 51536421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-11-02 09:58:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2016-10-31T05:44:22.99 3.0 undecidable manual S 0.1 0
IV.PE3.EHZ. 2016-10-31T05:44:12.08 3.0 negative manual P -5.3 0
IV.OFFI.HHZ. 2016-10-31T05:44:12.59 1.0 undecidable manual S 52 46.9197 91 1.49 13
IV.GUMA.HNN. 2016-10-31T05:44:11.00 0.1 undecidable manual S 11 43.9227 91 0.7 78
IV.FIAM.HHZ. 2016-10-31T05:44:10.97 0.1 undecidable manual S 192 46.0206 91 0.11 95
IV.CERT.HHZ. 2016-10-31T05:44:10.16 0.1 undecidable manual P 194 83.0502 90 -0.17 85
IV.ATCC.EHZ. 2016-10-31T05:44:09.12 0.3 undecidable manual P 320 74.2701 90 0.13 67
IV.GIGS.HHZ. 2016-10-31T05:44:08.18 0.1 undecidable manual S 131 37.1295 91 -0.31 92
IV.SNTG.HHZ. 2016-10-31T05:44:08.16 0.6 undecidable manual P 340 68.5758 91 0.05 46
IV.EL6.EHZ. 2016-10-31T05:44:08.72 0.6 undecidable manual P 352 73.4709 90 -0.14 44
IV.T0110.HHZ. 2016-10-31T05:44:08.30 0.1 undecidable manual P 138 66.4779 91 0.51 82
MN.AQU.HHZ. 2016-10-31T05:44:08.93 0.6 undecidable manual S 158 38.2284 91 0.14 47
IV.T1211.EHZ. 2016-10-31T05:44:07.62 0.1 undecidable manual S 243 34.5432 91 -0.17 92
IV.ASSB.HHZ. 2016-10-31T05:44:07.03 0.1 undecidable manual P 311 61.9935 91 -0.06 91
IV.VCEL.EHZ. 2016-10-31T05:44:06.86 0.1 undecidable manual P 122 58.5969 91 0.28 88
IV.TERO.HHZ. 2016-10-31T05:44:06.32 0.3 undecidable manual S 101 30.9468 92 -0.51 67
IV.FAGN.HHZ. 2016-10-31T05:44:06.09 0.1 undecidable manual P 147 53.7018 91 0.28 89
IV.T1215.EHZ. 2016-10-31T05:44:06.98 0.1 undecidable manual S 296 32.8449 91 -0.35 90
IV.OFFI.HHZ. 2016-10-31T05:44:05.44 0.1 undecidable manual P 52 46.9197 91 0.67 79
IV.T1247.HHZ. 2016-10-31T05:44:05.87 0.1 undecidable manual S 168 26.3514 92 0.25 95
IV.T1217.EHZ. 2016-10-31T05:44:04.87 0.1 undecidable manual S 280 24.8529 92 -0.34 91
IV.FIAM.HHZ. 2016-10-31T05:44:04.57 0.1 undecidable manual P 192 46.0206 91 -0.06 94
IV.GUMA.HNN. 2016-10-31T05:44:04.43 0.1 undecidable manual P 11 43.9227 91 0.12 93
IV.T1241.HNZ. 2016-10-31T05:44:04.94 0.1 undecidable manual S 39 25.9518 92 -0.56 90
IV.T1246.HHN. 2016-10-31T05:44:04.54 0.3 undecidable manual S 115 23.5542 93 -0.34 70
MN.AQU.HHZ. 2016-10-31T05:44:04.10 0.3 undecidable manual P 158 38.2284 91 0.67 62
IV.LNSS.HHZ. 2016-10-31T05:44:03.27 0.6 undecidable manual S 243 17.4714 96 0.01 49
IV.RM33.EHZ. 2016-10-31T05:44:03.46 0.1 undecidable manual S 184 18.3705 95 -0.03 99
IV.T1215.EHZ. 2016-10-31T05:44:03.50 1.0 undecidable manual P 296 32.8449 91 0.9 19
IV.FEMA.HNZ. 2016-10-31T05:44:03.10 0.1 undecidable manual P 335 35.2425 91 0.14 95
IV.T1211.EHZ. 2016-10-31T05:44:02.75 0.1 undecidable manual P 243 34.5432 91 -0.11 94
IV.GIGS.HHZ. 2016-10-31T05:44:02.98 0.1 undecidable manual P 131 37.1295 91 -0.28 92
IV.TERO.HHZ. 2016-10-31T05:44:02.02 0.1 undecidable manual P 101 30.9468 92 -0.28 93
IV.T1243.HHZ. 2016-10-31T05:44:02.76 0.6 undecidable manual S 82 17.871 96 -0.59 45
XO.AM05.EHZ. 2016-10-31T05:44:02.72 0.1 undecidable manual P 16 35.0427 91 -0.22 94
IV.T1216.EHZ. 2016-10-31T05:44:02.51 0.1 undecidable manual P 324 29.6481 92 0.41 91
IV.T1217.EHZ. 2016-10-31T05:44:01.27 0.6 undecidable manual P 280 24.8529 92 -0.1 48
IV.T1247.HHZ. 2016-10-31T05:44:01.72 0.6 undecidable manual P 168 26.3514 92 0.12 49
IV.T1246.HHN. 2016-10-31T05:44:01.02 0.1 undecidable manual P 115 23.5542 93 -0.16 97
IV.SMA1.EHZ. 2016-10-31T05:44:01.20 0.6 undecidable manual S 120 9.7791 125 -0.11 51
IV.T1241.HNZ. 2016-10-31T05:44:01.26 0.1 positive manual P 39 25.9518 92 -0.28 94
IV.MMO1.EHN. 2016-10-31T05:44:01.32 0.6 undecidable manual P 17 26.1516 92 -0.25 47
IV.LNSS.HHZ. 2016-10-31T05:44:00.40 0.6 negative manual P 243 17.4714 96 0.16 49
IV.T1245.HNZ. 2016-10-31T05:44:00.51 0.3 undecidable manual P 350 20.5683 94 -0.2 72
IV.T1243.HHZ. 2016-10-31T05:44:00.11 0.1 undecidable manual P 82 17.871 96 -0.18 98
IV.T1299.HNN. 2016-10-31T05:44:00.60 0.3 undecidable manual S 137 6.0939 144 -0.01 76
IV.RM33.EHZ. 2016-10-31T05:44:00.47 0.1 undecidable manual P 184 18.3705 95 0.1 99
IV.T1201.HNN. 2016-10-31T05:44:00.29 0.6 undecidable manual S 140 2.3976 165 0.1 50
IV.T1204.EHZ. 2016-10-31T05:44:00.50 0.1 undecidable manual S 88 6.8931 139 -0.25 99
IV.SMA1.EHZ. 2016-10-31T05:43:59.22 0.1 negative manual P 120 9.7791 125 0.1 99
IV.T1201.HNN. 2016-10-31T05:43:58.66 0.1 undecidable manual P 140 2.3976 165 0.19 99
IV.T1204.EHZ. 2016-10-31T05:43:58.87 0.1 undecidable manual P 88 6.8931 139 0.07 100
IV.T1299.HNN. 2016-10-31T05:43:58.90 0.1 undecidable manual P 137 6.0939 144 0.19 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1204.EHN. ML:2.7 0.0066670754999999995 0.08 AML other m 2016-10-31T05:44:00.67
IV.T1204.EHE. ML:2.5 0.004062044999999999 0.08 AML other m 2016-10-31T05:44:00.76
IV.SMA1.EHN. ML:2.0 0.00107731295 0.2592 AML other m 2016-10-31T05:44:02.83
IV.SMA1.EHE. ML:2.0 0.00105948455 0.3008 AML other m 2016-10-31T05:44:02.52
IV.LNSS.HHE. ML:1.9 0.0006391595 0.3616 AML other m 2016-10-31T05:44:03.59
IV.LNSS.HHN. ML:2.3 0.0015255855 0.16 AML other m 2016-10-31T05:44:04.26
IV.RM33.HNE. ML:2.3 0.0016540455 0.2112 AML other m 2016-10-31T05:44:05.13
IV.RM33.EHE. ML:2.3 0.001615 0.22 AML other m 2016-10-31T05:44:05.13
IV.RM33.EHN. ML:2.2 0.0012535579999999999 0.2976 AML other m 2016-10-31T05:44:03.87
IV.RM33.HNN. ML:2.2 0.001235082 0.1312 AML other m 2016-10-31T05:44:03.93
IV.T1241.EHE. ML:1.8 0.00031682680500000007 0.1408 AML other m 2016-10-31T05:44:05.59
IV.T1241.EHN. ML:1.8 0.0003655331 0.1792 AML other m 2016-10-31T05:44:05.05
IV.T1217.EHN. ML:2.0 0.00069415485 0.24 AML other m 2016-10-31T05:44:05.13
IV.T1217.HNN. ML:2.0 0.00063719095 0.16 AML other m 2016-10-31T05:44:08.69
IV.T1217.HNE. ML:1.9 0.00045355689999999996 0.064 AML other m 2016-10-31T05:44:05.39
IV.T1217.EHE. ML:1.9 0.000422849 0.064 AML other m 2016-10-31T05:44:05.36
IV.T1247.HHN. ML:2.1 0.00076535225 0.16 AML other m 2016-10-31T05:44:07.69
IV.T1247.HHE. ML:2.1 0.00076304875 0.16 AML other m 2016-10-31T05:44:07.05
IV.TERO.HNE. ML:1.9 0.00034718520000000003 0.0608 AML other m 2016-10-31T05:44:06.46
IV.TERO.HHN. ML:2.1 0.0005848179 0.0608 AML other m 2016-10-31T05:44:06.46
IV.TERO.HHE. ML:2.0 0.0004516188 0.0608 AML other m 2016-10-31T05:44:06.46
IV.TERO.HNN. ML:2.0 0.0004338686 0.08 AML other m 2016-10-31T05:44:06.37
IV.T1216.EHE. ML:3.1 0.0062980655 0.16 AML other m 2016-10-31T05:44:04.27
IV.T1216.EHN. ML:3.2 0.0079659595 0.192 AML other m 2016-10-31T05:44:03.89
IV.T1211.HNN. ML:2.2 0.0006559818 0.352 AML other m 2016-10-31T05:44:09.25
IV.T1211.EHE. ML:2.1 0.0005725109999999999 0.096 AML other m 2016-10-31T05:44:08.35
IV.T1211.EHN. ML:2.2 0.0006771731 0.352 AML other m 2016-10-31T05:44:09.08
IV.T1211.HNE. ML:2.1 0.0005642932000000001 0.112 AML other m 2016-10-31T05:44:08.29
IV.GIGS.HHN. ML:1.3 0.000068108795 0.1216 AML other m 2016-10-31T05:44:08.73
IV.GIGS.HHE. ML:1.3 0.00006949217 0.1024 AML other m 2016-10-31T05:44:08.69
IV.FEMA.HNE. ML:2.8 0.0022935635 0.2016 AML other m 2016-10-31T05:44:02.44
IV.FEMA.HNN. ML:2.7 0.0019566835 0.1792 AML other m 2016-10-31T05:44:02.44
IV.T1215.EHE. ML:2.2 0.0006017743 0.096 AML other m 2016-10-31T05:44:07.08
IV.T1215.HNE. ML:2.2 0.00062987615 0.096 AML other m 2016-10-31T05:44:07.12
IV.T1215.EHN. ML:2.3 0.000852105415 0.08 AML other m 2016-10-31T05:44:07.08
IV.T1215.HNN. ML:2.3 0.0008086985 0.08 AML other m 2016-10-31T05:44:07.08
MN.AQU.HHE. ML:1.7 0.00018500105 0.2208 AML other m 2016-10-31T05:44:10.89
MN.AQU.HLN. ML:1.8 0.0002133476 0.3392 AML other m 2016-10-31T05:44:10.50
MN.AQU.HHN. ML:1.7 0.00018905474999999998 0.2816 AML other m 2016-10-31T05:44:10.20
MN.AQU.HLE. ML:1.8 0.00019985724999999998 0.24 AML other m 2016-10-31T05:44:10.78
IV.FIAM.HHE. ML:1.6 0.00012404651999999998 0.1984 AML other m 2016-10-31T05:44:11.49
IV.FIAM.HHN. ML:1.7 0.000129050365 0.2208 AML other m 2016-10-31T05:44:11.53
IV.OFFI.HHE. ML:2.2 0.00046171630000000003 0.3392 AML other m 2016-10-31T05:44:15.26
IV.OFFI.HHN. ML:2.5 0.0008595145 0.5408 AML other m 2016-10-31T05:44:14.50
IV.FAGN.HHE. ML:2.1 0.000299873 0.3776 AML other m 2016-10-31T05:44:20.88
IV.FAGN.HHN. ML:2.0 0.00023708659999999997 0.3008 AML other m 2016-10-31T05:44:15.50
IV.VCEL.EHN. ML:1.9 0.0001572732 0.3584 AML other m 2016-10-31T05:44:18.94
IV.VCEL.EHE. ML:1.8 0.0001367738555 0.3392 AML other m 2016-10-31T05:44:21.26
IV.ASSB.HHN. ML:1.9 0.00015465869999999998 0.1824 AML other m 2016-10-31T05:44:13.27
IV.ASSB.HHE. ML:2.1 0.00024354255 0.1792 AML other m 2016-10-31T05:44:12.41
IV.SNTG.HHE. ML:1.7 0.00008883141 0.1408 AML other m 2016-10-31T05:44:15.16
IV.SNTG.HNN. ML:2.0 0.00016113080000000003 0.5184 AML other m 2016-10-31T05:44:23.89
IV.SNTG.HHN. ML:1.7 0.00008166763999999999 0.24 AML other m 2016-10-31T05:44:18.57
IV.SNTG.HNE. ML:2.0 0.000149312155 0.4992 AML other m 2016-10-31T05:44:19.47
IV.ATCC.EHN. ML:1.8 0.000086393735 0.4608 AML other m 2016-10-31T05:44:25.55
IV.ATCC.EHE. ML:1.9 0.00012169086000000001 0.24 AML other m 2016-10-31T05:44:20.40
IV.CERT.HHN. ML:1.4 0.000036329465 0.3584 AML other m 2016-10-31T05:44:29.71
IV.CERT.HHE. ML:1.5 0.0000467195 0.4416 AML other m 2016-10-31T05:44:30.99
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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