Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 28-12-2017 and time 05:35:31 (Italy) in region 6 km NW Arquata del Tronto (AP)

A magnitude ML 2.3 earthquake occured in region: 6 km NW Arquata del Tronto (AP), on

  • 28-12-2017 04:35:31 (UTC)
  • 28-12-2017 05:35:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8190, 13.2490 at 15 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
Arquata del Tronto AP 6 1178 1178
Montegallo AP 7 523 1701
Montemonaco AP 11 604 2305
Castelsantangelo sul Nera MC 12 281 2586
Norcia PG 13 4957 7543
Accumoli RI 14 667 8210
Acquasanta Terme AP 14 2916 11126
Montefortino FM 16 1178 12304
Ussita MC 17 444 12748
Visso MC 18 1107 13855
Preci PG 18 724 14579
Roccafluvione AP 19 2010 16589
Palmiano AP 19 196 16785
Bolognola MC 20 142 16927

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
53 Km N of L'Aquila (69753 inhabitants)
57 Km NE of Terni (111501 inhabitants)
77 Km E of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
92 Km S of Ancona (100861 inhabitants)
92 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
Bulletin
Rev1000 		ML 2.3 2017-12-28
04:35:31		 42.819 13.2487 15 2018-09-04
09:10:42		 Bollettino Sismico Italiano INGV 55178571
Reviewed
Rev100 		ML 2.2 2017-12-28
04:35:31		 42.8177 13.2435 14 2017-12-28
05:05:13		 Sala Sismica INGV-Roma 52865801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-12-28 04:35:31 ± 0.05
Latitude 42.8190 ± 0.0018
Longitude 13.2487 ± 0.0037
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 55178571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 309
Semi-minor axis of confidence ellipse (meter) 38
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71496
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 27
Type of magnitude ML
Reference to an origin 55178571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-04-19 12:49:13

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 52865801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-12-28 05:05:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LRP.EHZ. 2017-12-28T04:36:07.27 3.0 undecidable manual S -2.15 0
IV.BLLA.EHZ. 2017-12-28T04:35:58.20 3.0 positive manual P 2.04 0
IV.MIDA.HHZ. 2017-12-28T04:35:58.87 3.0 undecidable manual P 3.41 0
IV.MURB.HHZ. 2017-12-28T04:35:45.50 0.3 undecidable manual P 310 76.6677 93 0.35 63
IV.T0110.HHZ. 2017-12-28T04:35:45.60 0.1 undecidable manual P 146 78.366 93 0.19 86
IV.ARVD.HHZ. 2017-12-28T04:35:45.45 0.1 undecidable manual P 342 79.365 93 -0.12 87
IV.T1247.HHZ. 2017-12-28T04:35:45.96 0.1 undecidable manual S 174 42.0246 97 0.31 90
IV.MDAR.HNN. 2017-12-28T04:35:45.97 0.1 undecidable manual S 348 42.3243 97 0.25 90
IV.FAGN.HHZ. 2017-12-28T04:35:44.07 0.1 undecidable manual P 156 67.1772 94 0.37 85
IV.ATCC.EHZ. 2017-12-28T04:35:43.27 0.6 positive manual P 310 63.9915 94 0.07 45
IV.T1221.EHZ. 2017-12-28T04:35:43.40 0.1 undecidable manual S 278 33.0447 100 0.14 94
IV.CAMP.HHZ. 2017-12-28T04:35:43.44 0.1 undecidable manual S 157 34.0437 100 -0.09 95
IV.PF6.EHN. 2017-12-28T04:35:43.75 0.1 undecidable manual S 353 35.6421 99 -0.2 93
IV.CESI.HHZ. 2017-12-28T04:35:43.88 0.1 undecidable manual S 307 34.743 99 0.17 93
IV.TERO.HHZ. 2017-12-28T04:35:43.86 0.1 undecidable manual S 127 36.2415 99 -0.25 91
IV.CSP1.EHZ. 2017-12-28T04:35:42.46 0.1 undecidable manual S 353 30.4473 101 -0.13 95
IV.EL6.EHZ. 2017-12-28T04:35:42.12 0.1 undecidable manual P 348 57.8976 95 -0.14 90
IV.FIAM.HHZ. 2017-12-28T04:35:42.67 0.3 positive manual P 190 62.0934 94 -0.24 65
IV.GUMA.HHZ. 2017-12-28T04:35:42.45 0.6 undecidable manual S 15 27.9498 103 0.52 43
IV.LNSS.HHZ. 2017-12-28T04:35:42.47 0.3 undecidable manual S 215 29.3484 102 0.16 71
IV.CING.HHZ. 2017-12-28T04:35:42.65 0.6 positive manual P 356 61.8936 94 -0.23 44
IV.FDMO.HHZ. 2017-12-28T04:35:41.61 0.1 undecidable manual S 332 27.4503 103 -0.2 94
IV.MF5.EHZ. 2017-12-28T04:35:41.76 0.3 undecidable manual S 42 25.3524 105 0.49 66
IV.ASSB.HHZ. 2017-12-28T04:35:41.64 3.0 negative manual P 0 0
IV.ARRO.EHZ. 2017-12-28T04:35:40.72 0.1 negative manual P 236 47.5191 96 0.04 94
IV.FEMA.HNE. 2017-12-28T04:35:40.68 0.1 undecidable manual S 315 22.6551 108 0.1 96
IV.T1299.HNZ. 2017-12-28T04:35:40.38 0.6 undecidable manual S 172 20.6682 111 0.3 47
IV.SMA1.EHZ. 2017-12-28T04:35:40.29 0.1 undecidable manual S 161 22.0668 109 -0.14 96
IV.T1247.HHZ. 2017-12-28T04:35:39.66 0.1 undecidable manual P 174 42.0246 97 -0.18 91
IV.MDAR.HNN. 2017-12-28T04:35:39.67 0.3 undecidable manual P 348 42.3243 97 -0.21 69
IV.OFFI.HHZ. 2017-12-28T04:35:39.87 0.6 negative manual P 70 37.8288 98 0.68 40
OB.GAVE.EHZ. 2017-12-28T04:35:38.42 3.0 undecidable manual P 0.16 0
IV.TERO.HHZ. 2017-12-28T04:35:38.76 0.6 undecidable manual P 127 36.2415 99 -0.19 46
IV.MTRA.HNZ. 2017-12-28T04:35:38.24 0.3 undecidable manual S 120 13.875 126 -0.24 72
IV.T1221.EHZ. 2017-12-28T04:35:38.42 0.6 negative manual P 278 33.0447 100 -0.04 48
IV.CAMP.HHZ. 2017-12-28T04:35:38.37 0.1 undecidable manual P 157 34.0437 100 -0.25 92
IV.PF6.EHN. 2017-12-28T04:35:38.55 0.1 undecidable manual P 353 35.6421 99 -0.31 91
IV.CESI.HHZ. 2017-12-28T04:35:38.71 0.1 positive manual P 307 34.743 99 -0.01 96
IV.T1214.HNE. 2017-12-28T04:35:37.50 0.1 undecidable manual S 206 7.3815 147 0.23 97
IV.GUMA.HHZ. 2017-12-28T04:35:37.80 0.1 undecidable manual P 15 27.9498 103 0.11 96
IV.MC2.EHZ. 2017-12-28T04:35:37.78 0.3 undecidable manual S 335 11.3775 133 -0.17 73
IV.LNSS.HHZ. 2017-12-28T04:35:37.86 0.1 undecidable manual P 215 29.3484 102 -0.05 96
IV.FDMO.HHZ. 2017-12-28T04:35:37.40 0.1 undecidable manual P 332 27.4503 103 -0.22 94
IV.CSP1.EHZ. 2017-12-28T04:35:37.90 0.1 positive manual P 353 30.4473 101 -0.18 94
IV.MMO1.EHZ. 2017-12-28T04:35:37.63 0.3 undecidable manual S 35 10.9779 134 -0.25 72
IV.MF5.EHZ. 2017-12-28T04:35:37.54 0.1 undecidable manual P 42 25.3524 105 0.22 94
IV.NRCA.HNZ. 2017-12-28T04:35:37.73 0.3 undecidable manual S 278 11.0778 134 -0.17 73
IV.T1299.HNZ. 2017-12-28T04:35:36.70 0.1 undecidable manual P 172 20.6682 111 0.07 98
IV.SMA1.EHZ. 2017-12-28T04:35:36.74 0.1 undecidable manual P 161 22.0668 109 -0.09 97
IV.FEMA.HNE. 2017-12-28T04:35:36.87 0.1 undecidable manual P 315 22.6551 108 -0.04 98
IV.MMO1.EHZ. 2017-12-28T04:35:35.28 0.1 undecidable manual P 35 10.9779 134 -0.07 100
IV.NRCA.HNZ. 2017-12-28T04:35:35.33 0.1 undecidable manual P 278 11.0778 134 -0.04 100
IV.T1214.HNE. 2017-12-28T04:35:35.21 0.1 undecidable manual P 206 7.3815 147 0.21 97
IV.MC2.EHZ. 2017-12-28T04:35:35.50 0.1 undecidable manual P 335 11.3775 133 0.1 98
IV.MTRA.HNZ. 2017-12-28T04:35:35.63 0.1 negative manual P 120 13.875 126 -0.07 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.3 0.0017200000000000002 0.12 AML other m 2017-12-28T04:35:38.10
IV.NRCA.HHE. ML:2.3 0.0017900000000000001 0.12 AML other m 2017-12-28T04:35:38.10
IV.MTRA.EHN. ML:2.4 0.00229 0.5 AML other m 2017-12-28T04:35:38.31
IV.MTRA.HNN. ML:2.4 0.002335 0.18 AML other m 2017-12-28T04:35:38.40
IV.NRCA.HNN. ML:2.3 0.001765 0.12 AML other m 2017-12-28T04:35:38.32
IV.NRCA.HHN. ML:2.3 0.00196 0.12 AML other m 2017-12-28T04:35:38.32
IV.MTRA.HNE. ML:2.4 0.0021550000000000002 0.1 AML other m 2017-12-28T04:35:38.66
IV.MTRA.EHE. ML:2.4 0.0020949999999999996 0.12 AML other m 2017-12-28T04:35:38.72
IV.T1299.EHN. ML:2.3 0.0012725 0.14 AML other m 2017-12-28T04:35:40.49
IV.T1299.HNN. ML:2.6 0.002605 0.14 AML other m 2017-12-28T04:35:40.49
IV.SMA1.EHN. ML:2.3 0.0012850000000000001 0.2 AML other m 2017-12-28T04:35:40.61
IV.T1299.HNE. ML:2.1 0.0008489999999999999 0.12 AML other m 2017-12-28T04:35:40.56
IV.T1299.EHE. ML:2.1 0.000855 0.12 AML other m 2017-12-28T04:35:40.56
IV.SMA1.EHE. ML:2.3 0.00125 1.22 AML other m 2017-12-28T04:35:41.67
IV.MF5.EHN. ML:2.4 0.0013165 0.44 AML other m 2017-12-28T04:35:42.20
IV.MF5.EHE. ML:2.2 0.0007749999999999999 0.26 AML other m 2017-12-28T04:35:42.18
IV.LNSS.HHN. ML:2.0 0.00046950000000000003 0.54 AML other m 2017-12-28T04:35:43.46
OB.GAVE.EHN. ML:2.2 0.0007825 1.08 AML other m 2017-12-28T04:35:43.23
IV.CAMP.HHN. ML:2.1 0.00045799999999999997 1.44 AML other m 2017-12-28T04:35:44.02
OB.GAVE.EHE. ML:2.5 0.0013 1.46 AML other m 2017-12-28T04:35:44.95
IV.CESI.HHN. ML:2.3 0.0007035 0.38 AML other m 2017-12-28T04:35:44.37
IV.CESI.HHE. ML:1.9 0.000333 0.2 AML other m 2017-12-28T04:35:44.40
IV.CAMP.HHE. ML:2.0 0.000358 0.8 AML other m 2017-12-28T04:35:44.81
IV.TERO.HHN. ML:2.2 0.0005980000000000001 0.2 AML other m 2017-12-28T04:35:44.47
IV.TERO.HHE. ML:2.1 0.000442 0.32 AML other m 2017-12-28T04:35:44.47
IV.MURB.HHE. ML:2.3 0.000303 0.22 AML other m 2017-12-28T04:35:58.25
IV.MURB.HHN. ML:2.2 0.000254 0.22 AML other m 2017-12-28T04:35:59.31
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