Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 23-10-2016 and time 20:27:14 (UTC) in region 5 km W Montemonaco (AP)

A magnitude ML 1.6 earthquake occured in region: 5 km W Montemonaco (AP), on

  • 23-10-2016 20:27:14 (UTC)
  • 23-10-2016 22:27:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8930, 13.2620 at 9 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.

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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
Montemonaco AP 5 604 604
Montegallo AP 8 523 1127
Montefortino FM 9 1178 2305
Castelsantangelo sul Nera MC 9 281 2586
Ussita MC 12 444 3030
Bolognola MC 12 142 3172
Amandola FM 13 3629 6801
Arquata del Tronto AP 14 1178 7979
Comunanza AP 14 3166 11145
Visso MC 15 1107 12252
Palmiano AP 16 196 12448
Sarnano MC 16 3264 15712
Acquacanina MC 17 121 15833
Norcia PG 18 4957 20790
Roccafluvione AP 18 2010 22800
Fiastra MC 18 559 23359
Preci PG 18 724 24083
Acquasanta Terme AP 18 2916 26999
Venarotta AP 19 2066 29065
Montefalcone Appennino FM 19 424 29489
Smerillo FM 20 365 29854

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
61 Km N of L'Aquila (69753 inhabitants)
62 Km NE of Terni (111501 inhabitants)
75 Km E of Perugia (166134 inhabitants)
83 Km S of Ancona (100861 inhabitants)
84 Km NW of Montesilvano (53738 inhabitants)
91 Km NW of Pescara (121014 inhabitants)
96 Km NW of Chieti (51815 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 1.6 2016-10-23
20:27:14		 42.8932 13.2622 9 2016-10-23
20:33:34		 Sala Sismica INGV-Roma 30489221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-23 20:27:14 ± 0.04
Latitude 42.8932 ± 0.0027
Longitude 13.2622 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 30489221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 250
Semi-minor axis of confidence ellipse (meter) 248
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 132
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37322
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 30489221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-10-23 20:33:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2016-10-23T20:27:32.99 3.0 undecidable manual S 0.23 0
IV.LNSS.HHZ. 2016-10-23T20:27:28.02 0.3 undecidable manual S 209 36.9297 50 0.4 66
IV.CESI.HHZ. 2016-10-23T20:27:26.15 0.3 undecidable manual S 293 31.5462 50 -0.04 72
IV.T1215.EHZ. 2016-10-23T20:27:26.64 0.3 undecidable manual S 253 33.5442 50 -0.09 71
IV.T1217.EHZ. 2016-10-23T20:27:26.71 0.3 undecidable manual S 233 33.6441 50 -0.02 72
IV.SMA1.EHZ. 2016-10-23T20:27:25.73 0.3 undecidable manual S 168 29.748 107 0.1 72
IV.GIGS.HHZ. 2016-10-23T20:27:25.36 3.0 undecidable manual P 0.12 0
IV.CING.HHZ. 2016-10-23T20:27:25.10 3.0 undecidable manual P -0.11 0
IV.ATCC.EHZ. 2016-10-23T20:27:25.88 3.0 negative manual P -0.31 0
IV.SNTG.HHZ. 2016-10-23T20:27:24.11 3.0 undecidable manual P -0.09 0
IV.T1243.HHZ. 2016-10-23T20:27:24.67 0.3 undecidable manual S 145 26.5512 109 0.1 72
IV.ASSB.HHZ. 2016-10-23T20:27:24.37 3.0 undecidable manual P -0.42 0
IV.CAMP.HHZ. 2016-10-23T20:27:23.02 0.3 undecidable manual P 163 41.4252 50 0.11 70
IV.RM33.EHZ. 2016-10-23T20:27:23.42 3.0 negative manual P 0.26 0
IV.FDMO.HHZ. 2016-10-23T20:27:22.80 0.3 undecidable manual S 318 21.2676 113 -0.07 73
IV.OFFI.HHZ. 2016-10-23T20:27:22.89 3.0 undecidable manual P 0.89 0
IV.LNSS.HHZ. 2016-10-23T20:27:22.15 0.1 undecidable manual P 209 36.9297 50 -0.07 95
IV.T1216.EHZ. 2016-10-23T20:27:22.55 0.3 undecidable manual S 269 19.7691 114 0.17 72
IV.GUMA.HHE. 2016-10-23T20:27:22.96 0.6 undecidable manual S 17 19.6692 115 0.6 43
IV.TERO.HHZ. 2016-10-23T20:27:22.73 0.1 undecidable manual P 137 40.9257 50 -0.11 93
IV.T1215.EHZ. 2016-10-23T20:27:21.52 0.1 undecidable manual P 253 33.5442 50 -0.18 93
IV.T1217.EHZ. 2016-10-23T20:27:21.55 0.1 undecidable manual P 233 33.6441 50 -0.16 94
IV.CESI.HHZ. 2016-10-23T20:27:21.20 0.3 undecidable manual P 293 31.5462 50 -0.19 70
IV.NRCA.HNZ. 2016-10-23T20:27:20.72 0.3 undecidable manual S 241 13.6752 123 0.18 72
IV.T1243.HHZ. 2016-10-23T20:27:20.43 0.1 undecidable manual P 145 26.5512 109 -0.03 97
IV.SMA1.EHZ. 2016-10-23T20:27:20.97 0.1 undecidable manual P 168 29.748 107 -0.1 96
IV.T1216.EHZ. 2016-10-23T20:27:19.29 0.3 positive manual P 269 19.7691 114 0.1 73
IV.GUMA.HHE. 2016-10-23T20:27:19.53 0.6 undecidable manual P 17 19.6692 115 0.35 46
IV.FDMO.HHZ. 2016-10-23T20:27:19.41 0.1 undecidable manual P 318 21.2676 113 -0.07 98
XO.AM05.EHZ. 2016-10-23T20:27:19.97 0.3 undecidable manual S 38 11.877 127 -0.05 75
IV.MMO1.EHZ. 2016-10-23T20:27:18.04 0.3 undecidable manual S 83 5.2947 149 -0.43 70
XO.AM05.EHZ. 2016-10-23T20:27:18.02 0.1 undecidable manual P 38 11.877 127 0.19 97
IV.MC2.EHZ. 2016-10-23T20:27:18.38 0.3 undecidable manual S 289 6.2937 145 -0.26 72
IV.NRCA.HNZ. 2016-10-23T20:27:18.29 0.1 undecidable manual P 241 13.6752 123 0.16 97
IV.T1245.HHZ. 2016-10-23T20:27:18.70 0.3 undecidable manual S 236 7.2927 141 -0.15 74
IV.T1245.HHZ. 2016-10-23T20:27:17.31 0.1 undecidable manual P 236 7.2927 141 0.15 98
IV.MC2.EHZ. 2016-10-23T20:27:17.10 0.6 undecidable manual P 289 6.2937 145 0.06 50
IV.MMO1.EHZ. 2016-10-23T20:27:16.85 0.1 undecidable manual P 83 5.2947 149 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
XO.AM05.EHE. ML:2.0 0.00123 0.08 AML other m 2016-10-23T20:27:20.18
XO.AM05.EHN. ML:1.0 0.000127 0.08 AML other m 2016-10-23T20:27:20.29
IV.ASSB.HHE. ML:1.4 0.00005765 1.1 AML other m 2016-10-23T20:27:32.54
IV.ASSB.HHN. ML:1.4 0.00006905 0.16 AML other m 2016-10-23T20:27:32.12
IV.CESI.HHE. ML:1.4 0.000132 0.42 AML other m 2016-10-23T20:27:26.26
IV.CESI.HHN. ML:1.7 0.00022000000000000003 0.42 AML other m 2016-10-23T20:27:26.68
IV.FDMO.HHE. ML:1.3 0.000152 0.12 AML other m 2016-10-23T20:27:23.09
IV.FDMO.HHN. ML:1.5 0.000203 0.82 AML other m 2016-10-23T20:27:23.12
IV.LNSS.HHE. ML:1.7 0.00021 0.22 AML other m 2016-10-23T20:27:28.16
IV.LNSS.HHN. ML:1.7 0.0001915 0.32 AML other m 2016-10-23T20:27:28.39
IV.NRCA.HHN. ML:1.8 0.0005989999999999999 0.16 AML other m 2016-10-23T20:27:21.19
IV.NRCA.HHE. ML:1.8 0.0007830000000000001 0.16 AML other m 2016-10-23T20:27:21.49
IV.T1216.EHE. ML:1.5 0.0002398 1.4 AML other m 2016-10-23T20:27:23.41
IV.T1216.EHN. ML:1.5 0.000254 0.34 AML other m 2016-10-23T20:27:22.57
IV.T1245.HNN. ML:2.1 0.001905 0.16 AML other m 2016-10-23T20:27:19.41
IV.T1245.HHN. ML:2.1 0.0018549999999999999 0.16 AML other m 2016-10-23T20:27:19.41
IV.T1245.HNE. ML:2.2 0.002605 0.54 AML other m 2016-10-23T20:27:18.82
IV.T1245.HHE. ML:2.2 0.00254 0.54 AML other m 2016-10-23T20:27:18.82
IV.TERO.HHN. ML:1.2 0.000055499999999999994 0.82 AML other m 2016-10-23T20:27:29.80
IV.TERO.HHE. ML:1.1 0.000039800000000000005 0.96 AML other m 2016-10-23T20:27:30.26
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