Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 31-10-2016 and time 19:18:18 (Italy) in region 2 km E Castelsantangelo sul Nera (MC)

A magnitude ML 1.4 earthquake occured in region: 2 km E Castelsantangelo sul Nera (MC), on

  • 31-10-2016 18:18:18 (UTC)
  • 31-10-2016 19:18:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8970, 13.1840 at 10 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
Castelsantangelo sul Nera MC 3 281 281
Ussita MC 6 444 725
Visso MC 9 1107 1832
Bolognola MC 12 142 1974
Montemonaco AP 12 604 2578
Preci PG 12 724 3302
Montegallo AP 14 523 3825
Norcia PG 14 4957 8782
Montefortino FM 14 1178 9960
Acquacanina MC 15 121 10081
Fiastra MC 16 559 10640
Arquata del Tronto AP 17 1178 11818
Amandola FM 17 3629 15447
Fiordimonte MC 17 202 15649
Sarnano MC 18 3264 18913
Monte Cavallo MC 18 145 19058
Pieve Torina MC 20 1458 20516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
50 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
63 Km N of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
97 Km NW of Pescara (121014 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 1.4 2016-10-31
18:18:18		 42.8973 13.1842 10 2019-02-12
14:03:14		 Bollettino Sismico Italiano INGV 45157861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 18:18:18 ± 0.06
Latitude 42.8973 ± 0.0045
Longitude 13.1842 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 45157861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 511
Semi-minor axis of confidence ellipse (meter) 348
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 24
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 28
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) 0.41279
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 45157861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-05-11 11:09:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2016-10-31T18:18:33.90 0.1 undecidable manual S 132 45.8208 50 0.3 89
IV.ASSB.HHZ. 2016-10-31T18:18:32.77 1.0 undecidable manual S 291 45.621 50 -0.77 19
IV.T1221.EHZ. 2016-10-31T18:18:29.34 0.3 undecidable manual S 262 27.75 50 0.57 64
IV.T1243.HHZ. 2016-10-31T18:18:29.54 0.6 undecidable manual S 136 30.9468 50 -0.1 48
IV.T1204.EHZ. 2016-10-31T18:18:28.33 0.1 undecidable manual S 156 26.8509 50 -0.2 94
IV.T1215.EHZ. 2016-10-31T18:18:28.65 0.1 undecidable manual S 248 27.75 50 -0.14 95
IV.ASSB.HHZ. 2016-10-31T18:18:27.42 0.1 undecidable manual P 291 45.621 50 0.16 92
IV.T1220.EHZ. 2016-10-31T18:18:27.82 0.1 undecidable manual S 342 24.8529 112 -0.17 95
IV.TERO.HHZ. 2016-10-31T18:18:27.10 0.1 undecidable manual P 132 45.8208 50 -0.19 91
IV.GUMA.HHZ. 2016-10-31T18:18:27.37 0.6 undecidable manual S 34 22.0668 114 0.27 47
IV.SNTG.HHZ. 2016-10-31T18:18:27.99 3.0 undecidable manual S -1.24 0
IV.T1241.EHZ. 2016-10-31T18:18:26.24 0.6 undecidable manual S 103 20.5683 116 -0.39 46
IV.FDMO.HHZ. 2016-10-31T18:18:25.62 0.1 undecidable manual S 333 17.3715 120 -0.02 99
IV.T1221.EHZ. 2016-10-31T18:18:25.04 0.1 undecidable manual P 262 27.75 50 0.53 87
IV.T1243.HHZ. 2016-10-31T18:18:25.05 0.6 negative manual P 136 30.9468 50 0.04 48
IV.T1216.EHZ. 2016-10-31T18:18:24.28 0.1 undecidable manual S 267 13.4754 127 -0.23 96
IV.T1256.HHZ. 2016-10-31T18:18:24.31 0.1 undecidable manual S 16 12.5763 129 0.05 100
IV.T1204.EHZ. 2016-10-31T18:18:24.46 0.1 undecidable manual P 156 26.8509 50 0.09 96
IV.T1245.HHZ. 2016-10-31T18:18:23.07 0.6 undecidable manual S 176 4.4955 156 0.56 45
IV.GUMA.HHZ. 2016-10-31T18:18:23.78 0.6 undecidable manual P 34 22.0668 114 0.24 47
IV.T1215.EHZ. 2016-10-31T18:18:23.90 0.1 undecidable manual P 248 27.75 50 -0.62 84
IV.MMO1.EHZ. 2016-10-31T18:18:23.75 0.1 undecidable manual S 89 11.5773 131 -0.26 95
IV.T1220.EHZ. 2016-10-31T18:18:23.91 0.1 undecidable manual P 342 24.8529 112 -0.15 95
IV.T1241.EHZ. 2016-10-31T18:18:23.12 0.1 undecidable manual P 103 20.5683 116 -0.16 96
IV.FDMO.HHZ. 2016-10-31T18:18:22.77 0.1 undecidable manual P 333 17.3715 120 0.07 98
IV.T1256.HHZ. 2016-10-31T18:18:22.13 0.1 positive manual P 16 12.5763 129 0.22 96
IV.MMO1.EHZ. 2016-10-31T18:18:21.80 0.1 undecidable manual P 89 11.5773 131 0.04 100
IV.T1245.HHZ. 2016-10-31T18:18:21.40 0.1 undecidable manual P 176 4.4955 156 0.5 92
IV.T1216.EHZ. 2016-10-31T18:18:21.77 0.1 undecidable manual P 267 13.4754 127 -0.28 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.3 0.0001856777 0.2048 AML other m 2016-10-31T18:18:25.97
IV.GUMA.HHE. ML:1.6 0.00025312265 0.384 AML other m 2016-10-31T18:18:27.74
IV.T1216.EHE. ML:1.2 0.00016043849999999998 0.1024 AML other m 2016-10-31T18:18:24.97
IV.T1245.HHN. ML:1.7 0.00080104445 0.128 AML other m 2016-10-31T18:18:23.40
IV.T1256.HNN. ML:1.1 0.0001335065 0.1408 AML other m 2016-10-31T18:18:24.47
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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