Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 22-12-2017 and time 19:07:47 (Italy) in region 10 km N L'Aquila (AQ)

A magnitude ML 2.1 earthquake occured in region: 10 km N L'Aquila (AQ), on

  • 22-12-2017 18:07:47 (UTC)
  • 22-12-2017 19:07:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4440, 13.4260 at 9 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
L'Aquila AQ 10 69753 69753
Pizzoli AQ 11 4326 74079
Barete AQ 12 737 74816
Crognaleto TE 13 1297 76113
Capitignano AQ 13 665 76778
Campotosto AQ 14 542 77320
Pietracamela TE 14 271 77591
Fano Adriano TE 15 296 77887
Scoppito AQ 16 3727 81614
Cagnano Amiterno AQ 17 1369 82983
Poggio Picenze AQ 17 1136 84119
Montereale AQ 17 2581 86700
Fossa AQ 17 721 87421
Ocre AQ 18 1167 88588
Lucoli AQ 18 1011 89599
Barisciano AQ 19 1828 91427
Sant'Eusanio Forconese AQ 19 394 91821
Tornimparte AQ 20 3187 95008

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km N of L'Aquila (69753 inhabitants)
33 Km SW of Teramo (54892 inhabitants)
60 Km W of Montesilvano (53738 inhabitants)
62 Km W of Chieti (51815 inhabitants)
65 Km W of Pescara (121014 inhabitants)
65 Km E of Terni (111501 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
76 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km SE of Foligno (57155 inhabitants)
99 Km NE of Roma (2864731 inhabitants)
100 Km NE of Velletri (53303 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 2.1 2017-12-22
18:07:47		 42.4435 13.4263 9 2019-03-25
14:09:22		 Bollettino Sismico Italiano INGV 62108771
Reviewed
Rev100 		ML 2.1 2017-12-22
18:07:47		 42.446 13.4212 9 2017-12-22
18:15:36		 Sala Sismica INGV-Roma 52743471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-12-22 18:07:47 ± 0.08
Latitude 42.4435 ± 0.0045
Longitude 13.4263 ± 0.0085
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 62108771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 740
Semi-minor axis of confidence ellipse (meter) 191
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.09083
Epicentral distance of station farthest from the epicenter (degree) 0.66820
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 35
Type of magnitude ML
Reference to an origin 52743471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-12-22 18:15:36

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 41
Type of magnitude ML
Reference to an origin 62108771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-10-19 10:30:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GUMA.HHZ. 2017-12-22T18:08:10.06 0.6 undecidable manual S 354 69.0753 50 1.42 27
IV.CSP1.EHZ. 2017-12-22T18:08:10.73 0.6 undecidable manual S 346 74.1702 50 0.74 37
IV.MF5.EHZ. 2017-12-22T18:08:07.68 0.6 undecidable manual S 3 60.3951 50 1.35 29
IV.INTR.HHZ. 2017-12-22T18:08:07.07 0.3 undecidable manual S 140 61.9935 50 0.34 65
IV.NRCA.HHZ. 2017-12-22T18:08:03.44 0.6 undecidable manual S 330 50.2164 50 -0.16 46
IV.MMO1.EHZ. 2017-12-22T18:08:03.96 0.3 undecidable manual S 351 51.2154 50 0.09 70
IV.T0110.HHZ. 2017-12-22T18:08:00.69 0.6 undecidable manual S 129 37.2294 50 0.55 43
IV.CSP1.EHZ. 2017-12-22T18:08:00.17 0.1 undecidable manual P 346 74.1702 50 -0.22 87
IV.GUMA.HHZ. 2017-12-22T18:07:59.94 0.1 undecidable manual P 354 69.0753 50 0.33 86
IV.VCEL.EHZ. 2017-12-22T18:07:59.75 0.3 undecidable manual S 99 34.3434 50 0.38 68
IV.FDMO.HHZ. 2017-12-22T18:07:59.57 0.3 undecidable manual P 337 71.373 50 -0.39 63
IV.INTR.HHZ. 2017-12-22T18:07:58.28 0.1 undecidable manual P 140 61.9935 50 -0.23 89
IV.MF5.EHZ. 2017-12-22T18:07:58.58 0.1 undecidable manual P 3 60.3951 50 0.3 88
IV.MTRA.EHZ. 2017-12-22T18:07:58.83 0.3 undecidable manual S 356 34.8429 50 -0.67 62
IV.MMO1.EHZ. 2017-12-22T18:07:56.77 0.1 undecidable manual P 351 51.2154 50 -0.09 94
IV.T1299.EHZ. 2017-12-22T18:07:56.16 0.3 undecidable manual S 331 24.2535 110 -0.1 73
IV.NRCA.HHZ. 2017-12-22T18:07:56.39 0.1 undecidable manual P 330 50.2164 50 -0.31 89
IV.TERO.HHZ. 2017-12-22T18:07:55.98 0.3 undecidable manual S 36 24.6531 110 -0.41 69
IV.T0110.HHZ. 2017-12-22T18:07:54.63 0.1 undecidable manual P 129 37.2294 50 -0.08 96
IV.VCEL.EHZ. 2017-12-22T18:07:53.98 0.3 undecidable manual P 99 34.3434 50 -0.28 70
IV.MTRA.EHZ. 2017-12-22T18:07:53.86 0.1 undecidable manual P 356 34.8429 50 -0.48 89
IV.FIAM.HHZ. 2017-12-22T18:07:53.31 0.1 undecidable manual P 233 31.9458 50 -0.58 86
IV.T1299.EHZ. 2017-12-22T18:07:52.57 0.3 undecidable manual P 331 24.2535 110 0.1 73
IV.TERO.HHZ. 2017-12-22T18:07:52.30 0.1 undecidable manual P 36 24.6531 110 -0.25 95
IV.FAGN.HHZ. 2017-12-22T18:07:52.18 0.3 undecidable manual P 147 23.5542 111 -0.17 73
IV.T1247.HHZ. 2017-12-22T18:07:52.39 0.3 undecidable manual S 269 10.4784 131 0.3 72
IV.CAMP.HHZ. 2017-12-22T18:07:52.08 0.6 undecidable manual S 352 10.3785 131 0.02 51
MN.AQU.HHZ. 2017-12-22T18:07:51.96 0.6 undecidable manual S 190 10.0788 132 -0.03 51
IV.CAMP.HHZ. 2017-12-22T18:07:50.42 0.1 undecidable manual P 352 10.3785 131 0.38 95
MN.AQU.HHZ. 2017-12-22T18:07:50.12 0.1 undecidable manual P 190 10.0788 132 0.12 100
IV.T1247.HHZ. 2017-12-22T18:07:50.35 0.1 undecidable manual P 269 10.4784 131 0.29 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHN. ML:2.2 0.00030356405 0.32 AML other m 2017-12-22T18:08:13.69
IV.TERO.HHN. ML:2.2 0.0009125000000000001 0.1 AML other m 2017-12-22T18:07:56.15
IV.FIAM.HHE. ML:1.8 0.00035150000000000003 1.26 AML other m 2017-12-22T18:08:00.05
IV.FIAM.HHN. ML:1.8 0.00033650000000000005 0.92 AML other m 2017-12-22T18:08:01.58
MN.AQU.HLE. ML:2.3 0.0026916064999999998 0.4224 AML other m 2017-12-22T18:07:54.32
MN.AQU.HHE. ML:2.3 0.0026507775 0.4224 AML other m 2017-12-22T18:07:54.32
MN.AQU.HHN. ML:2.2 0.002198172 0.1536 AML other m 2017-12-22T18:07:52.79
MN.AQU.HLN. ML:2.2 0.0022440850000000003 0.2816 AML other m 2017-12-22T18:07:56.17
IV.CAMP.HHE. ML:2.0 0.001462367 0.4608 AML other m 2017-12-22T18:07:53.80
IV.CAMP.HHN. ML:2.1 0.001639444 0.5376 AML other m 2017-12-22T18:07:52.93
IV.FAGN.HHN. ML:2.4 0.0015752535000000002 0.32 AML other m 2017-12-22T18:07:58.21
IV.FAGN.HHE. ML:2.4 0.0015282722499999999 0.32 AML other m 2017-12-22T18:07:59.32
IV.TERO.HNN. ML:1.8 0.00041261695 0.1408 AML other m 2017-12-22T18:07:56.27
IV.TERO.HNE. ML:1.9 0.00044324640000000003 0.1024 AML other m 2017-12-22T18:07:56.10
IV.T1299.HNE. ML:1.6 0.0002757864 0.2048 AML other m 2017-12-22T18:08:01.32
IV.T1299.HNN. ML:1.7 0.00029023885 0.3584 AML other m 2017-12-22T18:07:56.46
IV.T1299.EHN. ML:1.7 0.0002958419 0.3584 AML other m 2017-12-22T18:07:56.65
IV.T1299.EHE. ML:1.6 0.00025547204099999997 0.2432 AML other m 2017-12-22T18:07:57.11
IV.MTRA.HNE. ML:2.2 0.0006014721000000001 0.2304 AML other m 2017-12-22T18:08:00.39
IV.MTRA.EHN. ML:2.2 0.00061343785 0.1536 AML other m 2017-12-22T18:07:59.51
IV.MTRA.HNN. ML:2.2 0.00062202185 0.1536 AML other m 2017-12-22T18:07:59.58
IV.MTRA.EHE. ML:2.1 0.00057896865 0.2176 AML other m 2017-12-22T18:08:00.51
IV.VCEL.EHE. ML:2.2 0.00065567 0.384 AML other m 2017-12-22T18:08:01.56
IV.VCEL.EHN. ML:2.2 0.00066691815 0.3584 AML other m 2017-12-22T18:08:02.11
IV.T0110.HHE. ML:2.1 0.00048975295 0.1664 AML other m 2017-12-22T18:08:02.32
IV.T0110.HHN. ML:2.2 0.0006125697 0.3712 AML other m 2017-12-22T18:08:03.54
IV.NRCA.HHN. ML:2.1 0.00034393600000000004 0.1408 AML other m 2017-12-22T18:08:04.56
IV.NRCA.HNE. ML:2.1 0.00032774335 0.1408 AML other m 2017-12-22T18:08:03.69
IV.NRCA.HHE. ML:2.1 0.00034225545 0.1408 AML other m 2017-12-22T18:08:03.76
IV.NRCA.HNN. ML:2.1 0.00033490114999999997 0.1408 AML other m 2017-12-22T18:08:04.56
IV.INTR.HHN. ML:2.2 0.00032731664999999997 0.32 AML other m 2017-12-22T18:08:08.74
IV.INTR.HNN. ML:0.0 0.00000024234429999999997 0.32 AML other m 2017-12-22T18:08:08.59
IV.INTR.HHE. ML:1.9 0.0001637909 0.32 AML other m 2017-12-22T18:08:07.36
IV.INTR.HNE. ML:0.0 0.00000015416245 0.32 AML other m 2017-12-22T18:08:07.52
IV.MF5.EHN. ML:2.1 0.00024901155 0.4992 AML other m 2017-12-22T18:08:12.10
IV.MF5.EHE. ML:2.0 0.0002216744 0.4224 AML other m 2017-12-22T18:08:08.40
IV.FDMO.HHE. ML:1.7 0.00007796457000000001 0.3584 AML other m 2017-12-22T18:08:09.96
IV.FDMO.HHN. ML:1.7 0.00008839744499999998 0.2048 AML other m 2017-12-22T18:08:13.03
IV.GUMA.HNE. ML:2.3 0.00032030365 0.448 AML other m 2017-12-22T18:08:12.76
IV.GUMA.HHE. ML:2.4 0.00039671754999999996 0.1792 AML other m 2017-12-22T18:08:11.21
IV.CSP1.EHN. ML:1.3 0.00003124182 0.256 AML other m 2017-12-22T18:08:15.00
IV.CSP1.EHE. ML:1.5 0.000049802115 0.2176 AML other m 2017-12-22T18:08:12.92
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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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