Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 09-04-2009 and time 09:29:01 (Italy) in region 9 km NE L'Aquila (AQ)

A magnitude ML 2.4 earthquake occured in region: 9 km NE L'Aquila (AQ), on

  • 09-04-2009 07:29:01 (UTC)
  • 09-04-2009 09:29:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4260, 13.4370 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 9 69753 69753
Pizzoli AQ 12 4326 74079
Barete AQ 13 737 74816
Crognaleto TE 14 1297 76113
Poggio Picenze AQ 15 1136 77249
Pietracamela TE 15 271 77520
Fossa AQ 15 721 78241
Capitignano AQ 15 665 78906
Campotosto AQ 16 542 79448
Scoppito AQ 16 3727 83175
Ocre AQ 16 1167 84342
Fano Adriano TE 16 296 84638
Barisciano AQ 17 1828 86466
Sant'Eusanio Forconese AQ 17 394 86860
Lucoli AQ 17 1011 87871
Cagnano Amiterno AQ 18 1369 89240
San Demetrio ne' Vestini AQ 18 1854 91094
Tornimparte AQ 19 3187 94281
Montereale AQ 19 2581 96862
Villa Sant'Angelo AQ 19 424 97286
Santo Stefano di Sessanio AQ 20 111 97397

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NE of L'Aquila (69753 inhabitants)
34 Km SW of Teramo (54892 inhabitants)
59 Km W of Montesilvano (53738 inhabitants)
61 Km W of Chieti (51815 inhabitants)
64 Km W of Pescara (121014 inhabitants)
67 Km E of Terni (111501 inhabitants)
73 Km NE of Tivoli (56533 inhabitants)
75 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km SE of Foligno (57155 inhabitants)
98 Km NE of Roma (2864731 inhabitants)
99 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 		Md 2.3
ML 2.4 		2009-04-09
07:29:01		 42.426 13.437 4 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 778949
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-09 07:29:01 ± 0.16
Latitude 42.4260 ± 0.0072
Longitude 13.4370 ± 0.0134
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 778949

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1094
Semi-minor axis of confidence ellipse (meter) 366
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 87
Circular confidence region, given by single value of horizontal uncertainty (meter) 1360.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66190
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 778949
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:44:37

Md:2.3

Field Value
Value 2.3
Uncertainty 0.0
Num. used stations
Type of magnitude Md
Reference to an origin 778949
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:44:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ORI.EHE. 2009-04-09T07:30:02.27 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHZ. 2009-04-09T07:29:53.25 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2009-04-09T07:29:41.06 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHE. 2009-04-09T07:29:41.20 10.0 undecidable manual Sg 0 0 0
IV.GUMA.HHE. 2009-04-09T07:29:38.84 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHN. 2009-04-09T07:29:37.79 10.0 undecidable manual Pg 0 0 0
IV.CING.HHE. 2009-04-09T07:29:36.04 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHE. 2009-04-09T07:29:36.95 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHZ. 2009-04-09T07:29:36.75 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-09T07:29:33.91 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHZ. 2009-04-09T07:29:29.95 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHE. 2009-04-09T07:29:27.37 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHZ. 2009-04-09T07:29:25.97 10.0 undecidable manual Pg 0 0 0
IV.MNS.HHE. 2009-04-09T07:29:23.25 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHZ. 2009-04-09T07:29:21.98 10.0 undecidable manual Pg 0 0 0
.NRCA.SHZ. 2009-04-09T07:29:18.89 0.3 undecidable manual Sg 330 52.3032 -1.018 52
IV.CERT.HHZ. 2009-04-09T07:29:15.42 0.3 undecidable manual Pg 215 64.7907 1.186 47
IV.FDMO.HHN. 2009-04-09T07:29:15.43 0.1 undecidable manual Pg 337 73.4709 -0.143 89
IV.LNSS.HHZ. 2009-04-09T07:29:15.53 0.1 undecidable manual Sg 301 37.9287 0.367 91
IV.OFFI.HHE. 2009-04-09T07:29:14.48 0.1 undecidable manual Pg 20 59.9955 0.983 69
.NRCA.SHZ. 2009-04-09T07:29:11.66 0.1 undecidable manual Pg 330 52.3032 -0.652 81
IV.TERO.HHE. 2009-04-09T07:29:10.47 0.3 undecidable manual Sg 32 25.752 -0.515 67
IV.PTQR.SHZ. 2009-04-09T07:29:10.44 0.1 undecidable manual Pg 184 44.9217 -0.532 86
IV.LNSS.HHZ. 2009-04-09T07:29:09.86 0.1 undecidable manual Pg 301 37.9287 0.287 92
IV.VCEL.EHZ. 2009-04-09T07:29:08.99 0.1 undecidable manual Pg 96 33.2445 0.342 92
IV.FAGN.HHE. 2009-04-09T07:29:08.75 0.1 undecidable manual Sg 146 21.4674 -0.771 81
IV.FIAM.HHN. 2009-04-09T07:29:08.99 10.0 undecidable manual Pg 0 0 0
IV.TERO.HHE. 2009-04-09T07:29:07.16 0.1 undecidable manual Pg 32 25.752 -0.001 100
IV.FAGN.HHE. 2009-04-09T07:29:06.78 0.1 undecidable manual Pg 146 21.4674 0.464 91
IV.CAMP.HHZ. 2009-04-09T07:29:05.51 0.1 undecidable manual Pg 349 12.3765 0.959 76
IV.T0104.EHE. 2009-04-09T07:29:05.45 0.3 undecidable manual Sg 228 10.878 -0.528 69
MN.AQU.HHZ. 2009-04-09T07:29:05.40 0.1 undecidable manual Sg 200 8.4804 0.195 99
IV.CAMP.HHZ. 2009-04-09T07:29:05.97 0.1 undecidable manual Sg 349 12.3765 -0.494 92
MN.AQU.HHZ. 2009-04-09T07:29:04.21 0.1 undecidable manual Pg 200 8.4804 0.388 95
IV.T0104.EHE. 2009-04-09T07:29:03.81 0.1 undecidable manual Pg 228 10.878 -0.458 93
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