Earthquake with magnitude of ML 1.6 on date 26-01-2017 and time 17:19:29 (Italy) in region 4 km W L'Aquila (AQ)

A magnitude ML 1.6 earthquake occured in region: 4 km W L'Aquila (AQ), on

  • 26-01-2017 16:19:29 (UTC)
  • 26-01-2017 17:19:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.36, 13.35 at 8 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.

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
Scoppito AQ 8 3727 73480
Lucoli AQ 8 1011 74491
Tornimparte AQ 9 3187 77678
Pizzoli AQ 9 4326 82004
Barete AQ 11 737 82741
Ocre AQ 13 1167 83908
Fossa AQ 14 721 84629
Cagnano Amiterno AQ 15 1369 85998
Poggio Picenze AQ 17 1136 87134
Sant'Eusanio Forconese AQ 17 394 87528
Capitignano AQ 18 665 88193
Rocca di Cambio AQ 18 533 88726
Villa Sant'Angelo AQ 19 424 89150
San Demetrio ne' Vestini AQ 19 1854 91004
Montereale AQ 20 2581 93585

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km W of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
62 Km E of Terni (111501 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
67 Km W of Chieti (51815 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
72 Km W of Pescara (121014 inhabitants)
85 Km SE of Foligno (57155 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
89 Km NE of Velletri (53303 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.6 2017-01-26
16:19:29
42.36 13.35 8 2017-01-26
16:38:35
Sala Sismica INGV-Roma 39847491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-01-26 16:19:29 ± 0.07
Latitude 42.36 ± 0.00
Longitude 13.35 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 39847491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 375
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
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) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.04227
Epicentral distance of station farthest from the epicenter (degree) 0.73744
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 39847491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-01-26 16:38:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.T1219.EHZ. 2017-01-26T16:19:55.18 1.0 undecidable manual S 340 0.7374 50 0.3 21
IV.FDMO.HHZ. 2017-01-26T16:19:54.29 1.0 undecidable manual S 344 0.6997 50 0.51 20
IV.MC2.EHZ. 2017-01-26T16:19:50.10 0.6 undecidable manual S 348 0.5603 50 0.45 42
IV.T1211.EHZ. 2017-01-26T16:19:44.74 0.6 undecidable manual S 295 0.402 50 -0.21 46
IV.T1219.EHZ. 2017-01-26T16:19:44.46 1.0 positive manual P 340 0.7374 50 0.13 22
IV.FDMO.HHZ. 2017-01-26T16:19:43.79 1.0 positive manual P 344 0.6997 50 0.09 22
IV.T0110.HHZ. 2017-01-26T16:19:43.55 0.6 undecidable manual S 113 0.3426 50 0.36 45
IV.PTQR.HHN. 2017-01-26T16:19:42.31 0.6 undecidable manual S 174 0.3426 50 -0.89 37
IV.MC2.EHZ. 2017-01-26T16:19:41.00 1.0 negative manual P 348 0.5603 50 -0.31 22
IV.T1299.EHZ. 2017-01-26T16:19:40.32 0.6 undecidable manual S 350 0.2752 105 -0.59 43
IV.T1211.EHZ. 2017-01-26T16:19:39.20 0.1 undecidable manual P 295 0.402 50 0.6 84
IV.T1222.EHZ. 2017-01-26T16:19:39.00 0.6 undecidable manual S 280 0.2338 107 -0.37 46
IV.FAGN.HHN. 2017-01-26T16:19:38.31 0.6 undecidable manual S 119 0.1988 110 0.23 48
IV.RM33.EHZ. 2017-01-26T16:19:37.19 0.6 undecidable manual S 326 0.1763 112 -0.1 49
IV.T0110.HHZ. 2017-01-26T16:19:37.47 0.1 undecidable manual P 113 0.3426 50 -0.12 95
IV.FIAM.HHZ. 2017-01-26T16:19:37.82 0.6 undecidable manual S 241 0.1961 110 -0.17 48
IV.LNSS.HHZ. 2017-01-26T16:19:37.43 0.3 undecidable manual P 317 0.331 50 0.05 73
IV.CAMP.HHZ. 2017-01-26T16:19:37.06 0.3 undecidable manual S 14 0.1781 112 -0.29 71
IV.PTQR.HHN. 2017-01-26T16:19:37.36 0.6 undecidable manual P 174 0.3426 50 -0.23 46
IV.GIGS.HHZ. 2017-01-26T16:19:37.10 0.6 undecidable manual S 61 0.188 111 -0.59 44
IV.T1299.EHZ. 2017-01-26T16:19:36.19 0.3 undecidable manual P 350 0.2752 105 -0.08 73
IV.T1222.EHZ. 2017-01-26T16:19:35.21 0.1 undecidable manual P 280 0.2338 107 -0.17 96
IV.CAMP.HHZ. 2017-01-26T16:19:34.13 0.1 positive manual P 14 0.1781 112 -0.08 99
IV.GIGS.HHZ. 2017-01-26T16:19:34.18 0.1 positive manual P 61 0.188 111 -0.23 96
IV.T1247.HHZ. 2017-01-26T16:19:34.69 0.6 undecidable manual S 334 0.0872 130 0.38 47
IV.FAGN.HHN. 2017-01-26T16:19:34.66 0.1 undecidable manual P 119 0.1988 110 0.03 100
IV.RM33.EHZ. 2017-01-26T16:19:34.21 0.1 undecidable manual P 326 0.1763 112 0.04 100
IV.FIAM.HHZ. 2017-01-26T16:19:34.63 0.1 undecidable manual P 241 0.1961 110 0.05 99
MN.AQU.HLE. 2017-01-26T16:19:33.54 0.6 undecidable manual S 102 0.0423 150 0.36 48
IV.T1247.HHZ. 2017-01-26T16:19:32.74 0.3 negative manual P 334 0.0872 130 0.28 72
MN.AQU.HLE. 2017-01-26T16:19:32.21 0.1 undecidable manual P 102 0.0423 150 0.41 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHN. ML:1.8 0.0004405 0.32 AML other m 2017-01-26T16:19:37.40
IV.CAMP.HHE. ML:1.6 0.0003035 0.3 AML other m 2017-01-26T16:19:37.55
IV.FIAM.HHE. ML:1.7 0.0003655 0.36 AML other m 2017-01-26T16:19:38.11
IV.FIAM.HHN. ML:1.5 0.0002075 0.62 AML other m 2017-01-26T16:19:41.97
IV.GIGS.HHN. ML:1.2 0.000131 0.18 AML other m 2017-01-26T16:19:37.22
IV.GIGS.HHE. ML:1.4 0.000209 0.34 AML other m 2017-01-26T16:19:37.24
IV.LNSS.HHE. ML:1.5 0.000128 1.24 AML other m 2017-01-26T16:19:45.68
IV.LNSS.HHN. ML:1.4 9.43E-5 0.92 AML other m 2017-01-26T16:19:45.82
IV.RM33.HNE. ML:1.7 0.000403 0.26 AML other m 2017-01-26T16:19:38.47
IV.RM33.HNN. ML:1.6 0.0003335 0.22 AML other m 2017-01-26T16:19:37.62
IV.RM33.EHN. ML:1.7 0.000388 0.84 AML other m 2017-01-26T16:19:37.73
IV.RM33.EHE. ML:1.7 0.0004105 0.28 AML other m 2017-01-26T16:19:38.48
IV.T1211.EHE. ML:1.4 6.86E-5 0.46 AML other m 2017-01-26T16:19:47.81
IV.T1211.EHN. ML:1.4 8.29E-5 0.5 AML other m 2017-01-26T16:19:59.62
IV.T1222.EHN. ML:1.4 0.000138 0.56 AML other m 2017-01-26T16:19:41.29
IV.T1222.EHE. ML:1.5 0.0001865 0.84 AML other m 2017-01-26T16:19:39.29
IV.T1247.HHE. ML:1.9 0.001275 0.28 AML other m 2017-01-26T16:19:35.01
IV.T1247.HHN. ML:2 0.001345 0.18 AML other m 2017-01-26T16:19:35.12
IV.TERO.HHE. ML:1.8 0.000272 0.1 AML other m 2017-01-26T16:19:41.24
IV.TERO.HHN. ML:1.7 0.0002135 0.12 AML other m 2017-01-26T16:19:41.36
IV.TERO.HNE. ML:1.8 0.0002455 0.1 AML other m 2017-01-26T16:19:41.24
IV.TERO.HNN. ML:1.7 0.0001985 1.04 AML other m 2017-01-26T16:19:44.53
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download