Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 09-02-2017 and time 22:39:08 (Italy) in region 4 km NW L'Aquila (AQ)

A magnitude ML 1.5 earthquake occured in region: 4 km NW L'Aquila (AQ), on

  • 09-02-2017 21:39:08 (UTC)
  • 09-02-2017 22:39:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3790, 13.3620 at 10 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
L'Aquila AQ 4 69753 69753
Pizzoli AQ 8 4326 74079
Scoppito AQ 9 3727 77806
Lucoli AQ 10 1011 78817
Barete AQ 10 737 79554
Tornimparte AQ 11 3187 82741
Ocre AQ 14 1167 83908
Fossa AQ 14 721 84629
Cagnano Amiterno AQ 14 1369 85998
Poggio Picenze AQ 16 1136 87134
Capitignano AQ 17 665 87799
Sant'Eusanio Forconese AQ 17 394 88193
Montereale AQ 19 2581 90774
Villa Sant'Angelo AQ 19 424 91198
Rocca di Cambio AQ 19 533 91731
San Demetrio ne' Vestini AQ 19 1854 93585
Barisciano AQ 20 1828 95413
Campotosto AQ 20 542 95955

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km NW of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
62 Km E of Terni (111501 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
66 Km W of Chieti (51815 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km W of Pescara (121014 inhabitants)
84 Km SE of Foligno (57155 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
91 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
Reviewed
Rev100 		ML 1.5 2017-02-09
21:39:08		 42.3793 13.3625 10 2017-02-09
21:43:49		 Sala Sismica INGV-Roma 40786941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-02-09 21:39:08 ± 0.07
Latitude 42.3793 ± 0.0045
Longitude 13.3625 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 40786941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 509
Semi-minor axis of confidence ellipse (meter) 401
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
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) 110
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) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.40469
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
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 40786941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-02-09 21:43:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2017-02-09T21:39:21.68 0.6 undecidable manual S 116 37.8288 50 0.94 37
IV.T1299.HNZ. 2017-02-09T21:39:18.66 0.6 undecidable manual S 347 29.0487 50 0.26 47
IV.SMA1.EHZ. 2017-02-09T21:39:18.64 0.6 undecidable manual S 355 27.9498 50 0.53 44
IV.TERO.HHZ. 2017-02-09T21:39:18.99 0.6 undecidable manual S 36 33.4443 50 -0.59 43
IV.T1222.EHZ. 2017-02-09T21:39:17.99 0.6 undecidable manual S 275 26.8509 50 0.18 48
IV.FAGN.HHZ. 2017-02-09T21:39:16.60 0.6 undecidable manual S 125 22.0668 115 0.14 49
IV.T1211.EHZ. 2017-02-09T21:39:16.29 0.3 undecidable manual P 292 44.9217 50 -0.16 70
IV.FIAM.HHZ. 2017-02-09T21:39:16.35 0.6 undecidable manual S 239 23.6541 113 -0.59 44
IV.CAMP.HHZ. 2017-02-09T21:39:15.01 0.3 undecidable manual S 12 17.7711 120 -0.11 74
IV.GIGS.HHZ. 2017-02-09T21:39:15.07 0.3 undecidable manual S 65 19.0698 118 -0.45 69
IV.T0110.HHZ. 2017-02-09T21:39:15.69 0.3 undecidable manual P 116 37.8288 50 0.33 69
IV.RM33.EHZ. 2017-02-09T21:39:15.71 0.6 undecidable manual S 320 18.7701 119 0.28 48
IV.TERO.HHZ. 2017-02-09T21:39:14.24 0.1 undecidable manual P 36 33.4443 50 -0.45 90
IV.SMA1.EHZ. 2017-02-09T21:39:13.86 0.3 undecidable manual P 355 27.9498 50 0.02 74
IV.T1299.HNZ. 2017-02-09T21:39:13.95 0.3 undecidable manual P 347 29.0487 50 -0.05 74
IV.T1222.EHZ. 2017-02-09T21:39:13.44 0.1 undecidable manual P 275 26.8509 50 -0.23 95
IV.RM33.EHZ. 2017-02-09T21:39:12.35 0.1 positive manual P 320 18.7701 119 0.06 100
IV.T1247.HHZ. 2017-02-09T21:39:12.98 0.3 undecidable manual S 323 8.6802 140 0.31 72
IV.FIAM.HHZ. 2017-02-09T21:39:12.97 0.1 undecidable manual P 239 23.6541 113 -0.19 96
IV.CAMP.HHZ. 2017-02-09T21:39:12.23 0.1 undecidable manual P 12 17.7711 120 0.11 99
IV.FAGN.HHZ. 2017-02-09T21:39:12.89 0.3 undecidable manual P 125 22.0668 115 0 75
IV.GIGS.HHZ. 2017-02-09T21:39:12.23 0.1 undecidable manual P 65 19.0698 118 -0.12 99
MN.AQU.HLZ. 2017-02-09T21:39:11.89 0.6 undecidable manual S 129 4.4955 156 0.01 52
IV.T1247.HHZ. 2017-02-09T21:39:10.89 0.1 undecidable manual P 323 8.6802 140 0.2 99
MN.AQU.HLZ. 2017-02-09T21:39:10.45 0.1 undecidable manual P 129 4.4955 156 0.21 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FAGN.HHE. ML:1.7 0.00033650000000000005 0.38 AML other m 2017-02-09T21:39:17.42
IV.FAGN.HHN. ML:1.5 0.000221 0.44 AML other m 2017-02-09T21:39:19.75
IV.GIGS.HHN. ML:1.0 0.0000862 0.14 AML other m 2017-02-09T21:39:15.26
IV.GIGS.HHE. ML:1.2 0.00012225 0.12 AML other m 2017-02-09T21:39:15.20
IV.RM33.EHE. ML:1.5 0.000241 0.28 AML other m 2017-02-09T21:39:16.80
IV.RM33.EHN. ML:1.4 0.0001875 0.42 AML other m 2017-02-09T21:39:17.59
IV.SMA1.EHN. ML:1.5 0.00015250000000000002 0.56 AML other m 2017-02-09T21:39:19.85
IV.SMA1.EHE. ML:1.7 0.00023799999999999998 0.24 AML other m 2017-02-09T21:39:18.79
IV.T1247.HHN. ML:2.0 0.0012549999999999998 0.14 AML other m 2017-02-09T21:39:13.24
IV.T1247.HHE. ML:1.9 0.001125 0.66 AML other m 2017-02-09T21:39:13.08
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