Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 31-10-2016 and time 00:25:44 (Italy) in region 2 km E Accumoli (RI)

A magnitude ML 2.3 earthquake occured in region: 2 km E Accumoli (RI), on

  • 30-10-2016 23:25:44 (UTC)
  • 31-10-2016 00:25:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7060, 13.2750 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 3 667 667
Arquata del Tronto AP 8 1178 1845
Amatrice RI 9 2657 4502
Acquasanta Terme AP 13 2916 7418
Cittareale RI 14 482 7900
Montegallo AP 16 523 8423
Norcia PG 18 4957 13380
Campotosto AQ 18 542 13922
Valle Castellana TE 19 977 14899

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Teramo (54892 inhabitants)
41 Km N of L'Aquila (69753 inhabitants)
54 Km E of Terni (111501 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
83 Km W of Chieti (51815 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km NE of Tivoli (56533 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 2.3 2016-10-30
23:25:44		 42.7058 13.2753 13 2019-02-12
14:03:24		 Bollettino Sismico Italiano INGV 48677701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-30 23:25:44 ± 0.07
Latitude 42.7058 ± 0.0027
Longitude 13.2753 ± 0.0061
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 48677701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 413
Semi-minor axis of confidence ellipse (meter) 216
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 97
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
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) 0.04227
Epicentral distance of station farthest from the epicenter (degree) 0.78691
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitude information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 48677701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-08-04 12:56:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GUMA.HNN. 2016-10-30T23:25:58.16 0.6 undecidable manual S 7 39.9267 93 0.66 40
IV.CSP1.EHZ. 2016-10-30T23:25:58.23 0.6 undecidable manual S 352 43.2234 93 -0.16 45
IV.PP3.EHZ. 2016-10-30T23:25:58.98 0.3 undecidable manual P 20 79.365 91 0.95 50
IV.CERT.HHZ. 2016-10-30T23:25:58.86 0.6 undecidable manual P 196 87.3459 91 -0.41 40
IV.T1211.EHZ. 2016-10-30T23:25:57.21 0.3 undecidable manual S 241 39.3273 93 -0.13 68
IV.T0110.HHZ. 2016-10-30T23:25:56.40 0.3 undecidable manual P 142 66.8775 92 0.29 64
IV.GIGS.HHZ. 2016-10-30T23:25:56.49 0.6 undecidable manual S 139 37.1295 94 -0.26 45
IV.VCEL.EHZ. 2016-10-30T23:25:55.25 0.3 undecidable manual P 127 57.6978 92 0.56 61
IV.T1247.HHZ. 2016-10-30T23:25:55.02 0.6 undecidable manual S 176 29.3484 96 0.32 45
XO.AM05.HNZ. 2016-10-30T23:25:55.49 0.6 undecidable manual S 12 30.747 95 0.42 44
IV.FAGN.HHZ. 2016-10-30T23:25:54.78 0.6 undecidable manual P 153 54.9006 92 0.51 42
IV.TERO.HHZ. 2016-10-30T23:25:54.23 0.3 undecidable manual S 109 28.3494 96 -0.2 70
IV.OFFI.HHZ. 2016-10-30T23:25:53.05 0.1 positive manual P 53 41.9247 93 0.77 76
IV.RM33.HNE. 2016-10-30T23:25:52.94 0.3 undecidable manual S 193 22.3554 99 0.09 72
IV.LNSS.HHZ. 2016-10-30T23:25:52.99 0.3 undecidable manual S 239 22.3554 99 0.16 72
IV.T1241.EHZ. 2016-10-30T23:25:52.06 0.3 undecidable manual S 37 20.9679 101 -0.41 68
IV.GUMA.HNN. 2016-10-30T23:25:52.00 0.1 undecidable manual P 7 39.9267 93 0.05 94
IV.MMO1.EHZ. 2016-10-30T23:25:52.33 0.6 undecidable manual S 11 21.867 100 -0.39 45
IV.CAMP.HHZ. 2016-10-30T23:25:52.57 0.3 undecidable manual S 150 21.7671 100 -0.12 72
IV.CSP1.EHZ. 2016-10-30T23:25:52.16 0.1 undecidable manual P 352 43.2234 93 -0.31 88
IV.T1246.HHN. 2016-10-30T23:25:52.75 0.6 undecidable manual S 127 22.3554 99 -0.09 48
MN.AQU.HHZ. 2016-10-30T23:25:51.96 0.3 undecidable manual P 165 40.4262 93 -0.08 70
IV.GIGS.HHZ. 2016-10-30T23:25:51.44 0.3 undecidable manual P 139 37.1295 94 -0.09 70
IV.T1211.EHZ. 2016-10-30T23:25:51.66 0.3 undecidable manual P 241 39.3273 93 -0.21 67
IV.T1243.HHZ. 2016-10-30T23:25:50.45 0.3 undecidable manual S 94 14.1747 115 -0.28 71
IV.T1247.HHZ. 2016-10-30T23:25:50.33 0.1 undecidable manual P 176 29.3484 96 -0.01 96
XO.AM05.HNZ. 2016-10-30T23:25:50.36 0.1 undecidable manual P 12 30.747 95 -0.2 92
IV.TERO.HHZ. 2016-10-30T23:25:50.00 0.1 undecidable manual P 109 28.3494 96 -0.18 93
IV.CAMP.HHZ. 2016-10-30T23:25:49.21 0.1 positive manual P 150 21.7671 100 0.03 97
IV.T1246.HHN. 2016-10-30T23:25:49.26 0.1 undecidable manual P 127 22.3554 99 -0.01 97
IV.T1201.HNN. 2016-10-30T23:25:49.05 0.6 undecidable manual S 200 5.7942 149 -0.01 50
IV.RM33.HNE. 2016-10-30T23:25:49.31 0.1 undecidable manual P 193 22.3554 99 0.04 97
IV.T1299.HNN. 2016-10-30T23:25:49.47 0.3 undecidable manual S 176 7.9809 138 0.06 74
IV.LNSS.HHZ. 2016-10-30T23:25:49.19 0.1 undecidable manual P 239 22.3554 99 -0.07 95
IV.SMA1.EHZ. 2016-10-30T23:25:49.60 0.3 undecidable manual S 150 9.6792 131 -0.14 73
IV.T1204.EHZ. 2016-10-30T23:25:48.66 0.6 undecidable manual S 134 4.6953 154 -0.27 48
IV.MMO1.EHZ. 2016-10-30T23:25:48.89 0.1 undecidable manual P 11 21.867 100 -0.3 92
IV.T1241.EHZ. 2016-10-30T23:25:48.94 0.1 undecidable manual P 37 20.9679 101 -0.12 96
IV.SMA1.EHZ. 2016-10-30T23:25:47.55 0.1 negative manual P 150 9.6792 131 0.07 99
IV.T1204.EHZ. 2016-10-30T23:25:47.05 0.1 undecidable manual P 134 4.6953 154 0.04 100
IV.T1243.HHZ. 2016-10-30T23:25:47.98 0.1 negative manual P 94 14.1747 115 -0.08 98
IV.T1201.HNN. 2016-10-30T23:25:47.23 0.1 undecidable manual P 200 5.7942 149 0.14 98
IV.T1299.HNN. 2016-10-30T23:25:47.46 0.1 undecidable manual P 176 7.9809 138 0.17 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.AQU.HHN. ML:1.9 0.00026365594999999995 0.2048 AML other m 2016-10-30T23:25:59.39
MN.AQU.HLE. ML:2.0 0.00032236935 0.256 AML other m 2016-10-30T23:26:00.04
MN.AQU.HLN. ML:1.9 0.00024766895 0.2048 AML other m 2016-10-30T23:25:59.40
MN.AQU.HHE. ML:2.0 0.00033571269999999997 0.2688 AML other m 2016-10-30T23:26:00.04
IV.CAMP.HHE. ML:2.5 0.002063329 0.2176 AML other m 2016-10-30T23:25:52.83
IV.CAMP.HHN. ML:2.5 0.001944687 0.2944 AML other m 2016-10-30T23:25:52.92
IV.CERT.HHE. ML:1.9 0.00009061987 0.4096 AML other m 2016-10-30T23:26:18.05
IV.CERT.HHN. ML:1.8 0.00008297027500000001 0.32 AML other m 2016-10-30T23:26:16.72
IV.FAGN.HHN. ML:2.4 0.0005608417 0.4864 AML other m 2016-10-30T23:26:05.81
IV.FAGN.HHE. ML:2.5 0.00067205945 0.32 AML other m 2016-10-30T23:26:05.31
IV.GIGS.HHN. ML:1.5 0.00012537748500000002 0.0896 AML other m 2016-10-30T23:25:57.63
IV.GIGS.HHE. ML:1.8 0.00024965400000000003 0.1536 AML other m 2016-10-30T23:25:56.70
IV.OFFI.HHN. ML:2.7 0.001528521 0.4992 AML other m 2016-10-30T23:26:01.56
IV.OFFI.HHE. ML:2.3 0.00064714435 0.2048 AML other m 2016-10-30T23:26:02.46
IV.PP3.HNE. ML:2.4 0.00036593819999999997 0.5888 AML other m 2016-10-30T23:26:12.13
IV.PP3.HNN. ML:2.4 0.00035577844999999994 0.2688 AML other m 2016-10-30T23:26:12.46
IV.PP3.EHE. ML:2.4 0.0003594523 0.5888 AML other m 2016-10-30T23:26:12.13
IV.PP3.EHN. ML:2.4 0.0003939861 0.448 AML other m 2016-10-30T23:26:12.33
IV.SMA1.EHN. ML:2.7 0.006341354499999999 0.192 AML other m 2016-10-30T23:25:49.67
IV.SMA1.EHE. ML:2.7 0.005313735 0.1792 AML other m 2016-10-30T23:25:49.76
IV.T0110.HHE. ML:2.4 0.00043386325 0.384 AML other m 2016-10-30T23:26:07.04
IV.T0110.HHN. ML:2.4 0.0004326699 0.3328 AML other m 2016-10-30T23:26:08.11
IV.T1211.HNE. ML:2.4 0.00095224525 0.128 AML other m 2016-10-30T23:25:57.85
IV.T1211.EHN. ML:2.5 0.0010746316 0.1408 AML other m 2016-10-30T23:25:57.84
IV.T1211.HNN. ML:2.5 0.00107531975 0.1408 AML other m 2016-10-30T23:25:57.84
IV.T1211.EHE. ML:2.4 0.000960380915 0.128 AML other m 2016-10-30T23:25:57.79
IV.T1241.EHN. ML:2.2 0.0011778969 0.2432 AML other m 2016-10-30T23:25:52.16
IV.T1241.HNE. ML:2.2 0.0009586404 0.512 AML other m 2016-10-30T23:25:54.85
IV.T1241.HNN. ML:2.2 0.001183092 0.2432 AML other m 2016-10-30T23:25:52.15
IV.T1241.EHE. ML:2.2 0.00098715285 0.512 AML other m 2016-10-30T23:25:54.86
IV.T1245.HNE. ML:2.6 0.002965023 0.2048 AML other m 2016-10-30T23:25:48.87
IV.T1245.HNN. ML:2.6 0.0032768115 0.2304 AML other m 2016-10-30T23:25:52.47
IV.T1245.HHE. ML:2.6 0.003006341 0.2176 AML other m 2016-10-30T23:25:48.76
IV.T1245.HHN. ML:2.6 0.0031805469999999997 0.2176 AML other m 2016-10-30T23:25:52.46
IV.TERO.HHE. ML:2.4 0.0011302789999999999 0.1408 AML other m 2016-10-30T23:25:55.26
IV.TERO.HNE. ML:2.3 0.00100684125 0.1408 AML other m 2016-10-30T23:25:55.26
IV.TERO.HHN. ML:2.2 0.0007271849000000001 0.192 AML other m 2016-10-30T23:25:55.91
IV.TERO.HNN. ML:2.2 0.0007101324 0.1792 AML other m 2016-10-30T23:25:55.08
IV.VCEL.EHE. ML:2.3 0.00042778705 0.3712 AML other m 2016-10-30T23:26:06.39
IV.VCEL.EHN. ML:2.2 0.00033984225 0.2944 AML other m 2016-10-30T23:26:06.39
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