Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 21-12-2016 and time 23:02:56 (Italy) in region 2 km N Castelsantangelo sul Nera (MC)

A magnitude ML 1.5 earthquake occured in region: 2 km N Castelsantangelo sul Nera (MC), on

  • 21-12-2016 22:02:56 (UTC)
  • 21-12-2016 23:02:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9160, 13.1500 at 7 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
Castelsantangelo sul Nera MC 2 281 281
Ussita MC 3 444 725
Visso MC 5 1107 1832
Preci PG 10 724 2556
Bolognola MC 11 142 2698
Acquacanina MC 13 121 2819
Fiastra MC 13 559 3378
Norcia PG 14 4957 8335
Fiordimonte MC 14 202 8537
Montemonaco AP 15 604 9141
Monte Cavallo MC 15 145 9286
Montefortino FM 16 1178 10464
Pieve Torina MC 16 1458 11922
Montegallo AP 17 523 12445
Pievebovigliana MC 17 866 13311
Sarnano MC 18 3264 16575
Amandola FM 18 3629 20204
Sellano PG 18 1079 21283
Arquata del Tronto AP 20 1178 22461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
54 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
65 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
93 Km W of Montesilvano (53738 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 1.5 2016-12-21
22:02:56		 42.9163 13.1502 7 2016-12-22
00:14:19		 Sala Sismica INGV-Roma 37366511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-12-21 22:02:56 ± 0.08
Latitude 42.9163 ± 0.0045
Longitude 13.1502 ± 0.0037
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 37366511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 447
Semi-minor axis of confidence ellipse (meter) 77
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45955
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 37366511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-12-22 00:14:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APEC.HHZ. 2016-12-21T22:03:22.44 1.0 undecidable manual S -3.78 0
IV.ATCC.EHZ. 2016-12-21T22:03:05.43 1.0 positive manual P 306 51.0156 50 -0.39 21
IV.OFFI.HHZ. 2016-12-21T22:03:05.22 0.1 negative manual P 87 43.5231 50 0.55 83
IV.T1215.EHZ. 2016-12-21T22:03:05.26 0.1 undecidable manual S 241 26.1516 105 -0.13 95
IV.TERO.HHZ. 2016-12-21T22:03:05.69 1.0 undecidable manual P 131 49.2174 50 0.13 23
IV.EL6.EHZ. 2016-12-21T22:03:04.46 1.0 negative manual P 355 46.0206 50 -0.59 20
IV.SNTG.HHZ. 2016-12-21T22:03:04.07 1.0 negative manual P 336 41.2254 50 -0.25 23
IV.T1241.EHZ. 2016-12-21T22:03:04.59 0.1 undecidable manual S 106 23.754 106 0 98
IV.ASSB.HHZ. 2016-12-21T22:03:03.91 0.3 positive manual P 290 42.2244 50 -0.57 62
IV.CESI.HHZ. 2016-12-21T22:03:03.98 0.1 undecidable manual S 296 22.2555 107 -0.09 96
IV.T1243.HHZ. 2016-12-21T22:03:03.62 0.6 positive manual P 135 34.4433 101 0.59 42
IV.T1218.EHZ. 2016-12-21T22:03:03.97 0.6 undecidable manual S -0.78 1.19
IV.FDMO.HHZ. 2016-12-21T22:03:01.65 0.1 undecidable manual S 339 14.2746 116 0.16 96
IV.T1215.EHZ. 2016-12-21T22:03:01.39 0.1 undecidable manual P 241 26.1516 105 -0.03 97
IV.MMO1.EHZ. 2016-12-21T22:03:01.35 0.3 undecidable manual S 97 14.4744 115 -0.21 71
IV.T1241.EHZ. 2016-12-21T22:03:00.78 0.1 undecidable manual P 106 23.754 106 -0.18 94
IV.T1256.HHZ. 2016-12-21T22:03:00.87 0.1 undecidable manual S 32 11.6772 120 0.16 97
IV.T1216.EHZ. 2016-12-21T22:03:00.87 0.1 undecidable manual S 255 10.9779 122 0.37 93
IV.CESI.HHZ. 2016-12-21T22:03:00.65 0.1 undecidable manual P 296 22.2555 107 -0.01 98
IV.MMO1.EHZ. 2016-12-21T22:02:59.21 0.1 undecidable manual P 97 14.4744 115 0 99
IV.FDMO.HHZ. 2016-12-21T22:02:59.21 0.1 undecidable manual P 339 14.2746 116 0.04 99
IV.T1216.EHZ. 2016-12-21T22:02:58.79 0.1 undecidable manual P 255 10.9779 122 0.19 96
IV.MC2.EHZ. 2016-12-21T22:02:58.32 0.1 undecidable manual S 100 3.1968 155 -0.3 95
IV.T1256.HHZ. 2016-12-21T22:02:58.71 0.1 undecidable manual P 32 11.6772 120 -0.01 100
IV.MC2.EHZ. 2016-12-21T22:02:57.45 0.1 undecidable manual P 100 3.1968 155 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.4 0.0001735 1.06 AML other m 2016-12-21T22:03:05.62
IV.CESI.HHE. ML:1.3 0.00013800000000000002 0.34 AML other m 2016-12-21T22:03:06.45
IV.T1216.EHE. ML:1.8 0.0008045 1.6 AML other m 2016-12-21T22:03:01.14
IV.T1216.EHN. ML:1.6 0.000583 1.52 AML other m 2016-12-21T22:03:02.80
IV.T1218.HNN. ML:1.6 0.00021050000000000002 1.56 AML other m 2016-12-21T22:03:13.90
IV.T1218.HNE. ML:2.5 0.0016124000000000002 0.68 AML other m 2016-12-21T22:03:13.84
IV.T1241.EHE. ML:1.5 0.0002 0.12 AML other m 2016-12-21T22:03:04.80
IV.T1241.EHN. ML:1.2 0.00011674999999999999 1.02 AML other m 2016-12-21T22:03:05.08
IV.T1256.HHN. ML:1.2 0.00023999999999999998 0.5 AML other m 2016-12-21T22:03:01.63
IV.T1256.HHE. ML:1.3 0.00028000000000000003 0.7 AML other m 2016-12-21T22:03:01.37
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