Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 09-04-2009 and time 01:06:57 (UTC) in region 1 km NW L'Aquila (AQ)

A magnitude ML 2.4 earthquake occured in region: 1 km NW L'Aquila (AQ), on

  • 09-04-2009 01:06:57 (UTC)
  • 09-04-2009 03:06:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3640, 13.3920 at 4 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 1 69753 69753
Lucoli AQ 9 1011 70764
Tornimparte AQ 11 3187 73951
Fossa AQ 11 721 74672
Ocre AQ 11 1167 75839
Scoppito AQ 11 3727 79566
Pizzoli AQ 11 4326 83892
Poggio Picenze AQ 13 1136 85028
Barete AQ 13 737 85765
Sant'Eusanio Forconese AQ 14 394 86159
Villa Sant'Angelo AQ 16 424 86583
San Demetrio ne' Vestini AQ 16 1854 88437
Rocca di Cambio AQ 16 533 88970
Barisciano AQ 17 1828 90798
Cagnano Amiterno AQ 17 1369 92167
Capitignano AQ 19 665 92832
Fagnano Alto AQ 19 418 93250

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km NW of L'Aquila (69753 inhabitants)
42 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)
66 Km NE of Tivoli (56533 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
69 Km W of Pescara (121014 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
91 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 		ML 2.4 2009-04-09
01:06:57		 42.364 13.392 4 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 777019
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-09 01:06:57 ± 0.26
Latitude 42.3640 ± 0.0171
Longitude 13.3920 ± 0.0097
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 777019

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1923
Semi-minor axis of confidence ellipse (meter) 440
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 193
Circular confidence region, given by single value of horizontal uncertainty (meter) 2061.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33275
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 6
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 777019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:42:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHN. 2009-04-09T01:07:06.22 0.6 undecidable manual Pg 85 36.9297 0.975 35
IV.FAGN.HHE. 2009-04-09T01:07:04.58 0.3 undecidable manual Sg 125 19.1697 -0.015 74
IV.FIAM.HHZ. 2009-04-09T01:07:02.79 0.3 undecidable manual Pg 245 24.9528 -0.078 72
IV.FAGN.HHE. 2009-04-09T01:07:01.54 0.3 undecidable manual Pg 125 19.1697 -0.183 71
IV.T0104.EHE. 2009-04-09T01:07:00.05 0.3 undecidable manual Sg 264 4.4955 0.228 73
MN.AQU.HHE. 2009-04-09T01:06:59.11 0.3 undecidable manual Sg 145 1.3986 -0.081 75
IV.T0108.HLN. 2009-04-09T01:06:59.95 0.3 undecidable manual Sg 202 3.4965 0.377 70
IV.STR3.BHN. 2009-04-09T01:06:58.97 10.0 undecidable manual Pg 0 0 0
MN.AQU.HHE. 2009-04-09T01:06:58.32 0.1 undecidable manual Pg 145 1.3986 -0.289 96
IV.T0108.HLN. 2009-04-09T01:06:58.75 0.1 undecidable manual Pg 202 3.4965 -0.079 100
IV.T0104.EHE. 2009-04-09T01:06:58.81 0.1 undecidable manual Pg 264 4.4955 -0.163 98
IV.RSM.SHZ. 2009-04-09T01:06:57.79 10.0 undecidable manual Pg 0 0 0
IV.STR4.BHN. 2009-04-09T01:06:57.58 10.0 undecidable manual Pg 0 0 0
IV.MSC.EHZ. 2009-04-09T01:06:56.50 10.0 undecidable manual Pg 0 0 0
IV.FG2.SHZ. 2009-04-09T01:06:56.36 10.0 undecidable manual Pg 0 0 0
IV.BADI.EHN. 2009-04-09T01:06:55.68 10.0 undecidable manual Pg 0 0 0
IV.RFI.SHZ. 2009-04-09T01:06:55.70 10.0 undecidable manual Pg 0 0 0
IV.CAFR.HHN. 2009-04-09T01:06:54.75 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHN. 2009-04-09T01:06:51.52 10.0 undecidable manual Sg 0 0 0
IV.PIEI.HHZ. 2009-04-09T01:06:50.06 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2009-04-09T01:06:49.43 10.0 undecidable manual Pg 0 0 0
IV.VVLD.HHN. 2009-04-09T01:06:48.97 10.0 undecidable manual Sg 0 0 0
IV.CESI.HHZ. 2009-04-09T01:06:47.04 10.0 undecidable manual Sg 0 0 0
IV.INTR.HHE. 2009-04-09T01:06:47.93 10.0 undecidable manual Sg 0 0 0
IV.ARVD.HHE. 2009-04-09T01:06:47.97 10.0 undecidable manual Pg 0 0 0
IV.AOI.HHN. 2009-04-09T01:06:46.91 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-04-09T01:06:46.61 10.0 undecidable manual Pg 0 0 0
IV.MA9.HHZ. 2009-04-09T01:06:45.68 10.0 undecidable manual Pg 0 0 0
IV.LAV9.SHZ. 2009-04-09T01:06:45.86 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHN. 2009-04-09T01:06:45.22 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-04-09T01:06:43.11 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHN. 2009-04-09T01:06:43.16 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHZ. 2009-04-09T01:06:42.66 10.0 undecidable manual Sg 0 0 0
IV.VVLD.HHN. 2009-04-09T01:06:42.84 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-09T01:06:41.07 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHZ. 2009-04-09T01:06:40.88 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHZ. 2009-04-09T01:06:39.40 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHZ. 2009-04-09T01:06:39.50 10.0 undecidable manual Pg 0 0 0
IV.NRCA.SHZ. 2009-04-09T01:06:39.09 10.0 undecidable manual Sg 0 0 0
IV.TRTR.HHZ. 2009-04-09T01:06:39.22 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2009-04-09T01:06:38.03 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHE. 2009-04-09T01:06:38.52 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHZ. 2009-04-09T01:06:38.09 10.0 undecidable manual Pg 0 0 0
IV.OFFI.HHE. 2009-04-09T01:06:37.20 10.0 undecidable manual Pg 0 0 0
IV.LNSS.HHZ. 2009-04-09T01:06:35.13 10.0 undecidable manual Sg 0 0 0
IV.MNS.HHE. 2009-04-09T01:06:35.88 10.0 undecidable manual Pg 0 0 0
IV.TERO.HHZ. 2009-04-09T01:06:34.23 10.0 undecidable manual Sg 0 0 0
IV.PTQR.SHZ. 2009-04-09T01:06:34.69 10.0 undecidable manual Pg 0 0 0
IV.NRCA.SHZ. 2009-04-09T01:06:32.32 10.0 undecidable manual Pg 0 0 0
IV.LNSS.HHZ. 2009-04-09T01:06:31.40 10.0 undecidable manual Pg 0 0 0
IV.TERO.HHZ. 2009-04-09T01:06:30.74 10.0 undecidable manual Pg 0 0 0
IV.MIGL.HHE. 2009-04-09T01:06:14.52 10.0 undecidable manual Pg 0 0 0
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