Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 08-04-2009 and time 21:32:04 (UTC) in region 1 km NW L'Aquila (AQ)

A magnitude ML 2.0 earthquake occured in region: 1 km NW L'Aquila (AQ), on

  • 08-04-2009 21:32:04 (UTC)
  • 08-04-2009 23:32:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3560, 13.3910 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 1 69753 69753
Lucoli AQ 8 1011 70764
Tornimparte AQ 10 3187 73951
Ocre AQ 10 1167 75118
Fossa AQ 11 721 75839
Scoppito AQ 11 3727 79566
Pizzoli AQ 12 4326 83892
Poggio Picenze AQ 13 1136 85028
Sant'Eusanio Forconese AQ 13 394 85422
Barete AQ 14 737 86159
Villa Sant'Angelo AQ 15 424 86583
Rocca di Cambio AQ 16 533 87116
San Demetrio ne' Vestini AQ 16 1854 88970
Barisciano AQ 17 1828 90798
Cagnano Amiterno AQ 18 1369 92167
Fagnano Alto AQ 19 418 92585
Rocca di Mezzo AQ 20 1526 94111
Prata d'Ansidonia AQ 20 496 94607
Capitignano AQ 20 665 95272

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km NW of L'Aquila (69753 inhabitants)
43 Km SW of Teramo (54892 inhabitants)
64 Km W of Chieti (51815 inhabitants)
65 Km W of Montesilvano (53738 inhabitants)
65 Km E of Terni (111501 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
69 Km W of Pescara (121014 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
91 Km NE of Roma (2864731 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 		Md 2.3
ML 2.0 		2009-04-08
21:32:04		 42.356 13.391 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 776109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-08 21:32:04 ± 0.07
Latitude 42.3560 ± 0.0045
Longitude 13.3910 ± 0.0073
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 776109

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 606
Semi-minor axis of confidence ellipse (meter) 426
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 781.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.74014
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 776109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:14

Md:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 776109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESX.HHE. 2009-04-08T21:32:26.14 10.0 undecidable manual Pg 0 0 0
IV.VVLD.HHN. 2009-04-08T21:32:22.13 0.6 undecidable manual Sg 160 57.2982 -0.34 43
IV.NRCA.HHZ. 2009-04-08T21:32:22.75 0.3 undecidable manual Sg 337 57.5979 0.19 67
IV.INTR.HHE. 2009-04-08T21:32:22.66 0.6 undecidable manual Sg 132 56.9985 0.259 44
IV.SDI.SHZ. 2009-04-08T21:32:19.27 0.3 undecidable manual Pg 154 79.5648 1.003 49
IV.FDMO.HHE. 2009-04-08T21:32:18.30 0.3 undecidable manual Pg 342 79.4649 0.051 66
IV.GUAR.HHE. 2009-04-08T21:32:18.04 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHN. 2009-04-08T21:32:18.78 0.3 undecidable manual Pg 331 82.1511 0.114 65
IV.LNSS.HHZ. 2009-04-08T21:32:17.82 0.3 undecidable manual Sg 314 39.627 0.049 71
IV.OFFI.HHZ. 2009-04-08T21:32:17.68 0.3 undecidable manual Pg 20 68.5758 1.105 47
IV.MNS.HHN. 2009-04-08T21:32:16.00 0.6 undecidable manual Pg 273 58.1973 1.019 34
IV.PTQR.SHZ. 2009-04-08T21:32:16.84 0.3 undecidable manual Sg 179 37.0296 -0.243 69
IV.VCEL.EHZ. 2009-04-08T21:32:16.88 0.6 undecidable manual Sg 83 37.1295 -0.216 46
IV.TERO.HHN. 2009-04-08T21:32:15.47 0.3 undecidable manual Sg 30 34.3434 -0.891 56
IV.VVLD.HHN. 2009-04-08T21:32:14.61 0.3 undecidable manual Pg 160 57.2982 -0.218 67
IV.NRCA.HHZ. 2009-04-08T21:32:14.66 0.1 undecidable manual Pg 337 57.5979 -0.221 89
IV.INTR.HHE. 2009-04-08T21:32:14.71 0.3 undecidable manual Pg 132 56.9985 -0.073 69
IV.FIAM.HHZ. 2009-04-08T21:32:13.11 0.3 undecidable manual Sg 247 24.4533 -0.381 68
IV.LNSS.HHZ. 2009-04-08T21:32:12.01 0.1 undecidable manual Pg 314 39.627 -0.105 94
IV.CAMP.HHZ. 2009-04-08T21:32:12.08 0.3 undecidable manual Sg 4 19.9689 0.014 74
IV.FAGN.HHE. 2009-04-08T21:32:11.87 0.1 undecidable manual Sg 122 18.7701 0.192 96
IV.PTQR.SHZ. 2009-04-08T21:32:11.51 0.6 undecidable manual Pg 179 37.0296 -0.21 46
IV.VCEL.EHZ. 2009-04-08T21:32:11.70 0.1 undecidable manual Pg 83 37.1295 -0.021 96
IV.TERO.HHN. 2009-04-08T21:32:10.86 0.1 undecidable manual Pg 30 34.3434 -0.438 89
IV.FIAM.HHZ. 2009-04-08T21:32:09.66 0.1 undecidable manual Pg 247 24.4533 0.015 98
IV.CAMP.HHZ. 2009-04-08T21:32:09.03 0.1 undecidable manual Pg 4 19.9689 0.214 95
IV.FAGN.HHE. 2009-04-08T21:32:08.72 0.1 undecidable manual Pg 122 18.7701 0.126 97
IV.T0104.EHN. 2009-04-08T21:32:07.92 0.3 undecidable manual Sg 276 4.2957 -0.082 75
MN.AQU.HHN. 2009-04-08T21:32:07.31 0.1 undecidable manual Sg 105 0.999 -0.383 95
IV.T0108.HLN. 2009-04-08T21:32:07.51 0.3 undecidable manual Sg 207 2.5974 -0.289 72
IV.T0108.HLN. 2009-04-08T21:32:06.55 0.1 undecidable manual Pg 207 2.5974 0.193 99
IV.T0104.EHN. 2009-04-08T21:32:06.72 0.1 undecidable manual Pg 276 4.2957 0.245 97
MN.AQU.HHN. 2009-04-08T21:32:06.43 0.1 undecidable manual Pg 105 0.999 0.134 100
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