Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 07-04-2009 and time 04:41:51 (Italy) in region 1 km NW L'Aquila (AQ)

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

  • 07-04-2009 02:41:51 (UTC)
  • 07-04-2009 04:41:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3580, 13.3870 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.

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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 8 1011 70764
Tornimparte AQ 10 3187 73951
Scoppito AQ 11 3727 77678
Ocre AQ 11 1167 78845
Fossa AQ 11 721 79566
Pizzoli AQ 12 4326 83892
Poggio Picenze AQ 14 1136 85028
Barete AQ 14 737 85765
Sant'Eusanio Forconese AQ 14 394 86159
Rocca di Cambio AQ 16 533 86692
Villa Sant'Angelo AQ 16 424 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
Capitignano AQ 19 665 93250
Rocca di Mezzo AQ 20 1526 94776

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 E of Terni (111501 inhabitants)
65 Km W of Montesilvano (53738 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 		ML 2.0 2009-04-07
02:41:51		 42.358 13.387 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 765019
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-07 02:41:51 ± 0.07
Latitude 42.3580 ± 0.0036
Longitude 13.3870 ± 0.0061
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 765019

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 579
Semi-minor axis of confidence ellipse (meter) 468
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.3
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 40
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.02613
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 20
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 765019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:28:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHE. 2009-04-07T02:42:16.46 0.3 undecidable manual Sg 331 81.8514 0.773 55
IV.CING.HHE. 2009-04-07T02:42:10.51 0.6 undecidable manual Pg 352 113.8971 0.253 40
IV.INTR.HHN. 2009-04-07T02:42:09.56 0.3 undecidable manual Sg 132 57.3981 0.404 65
IV.NRCA.SHZ. 2009-04-07T02:42:09.41 0.3 undecidable manual Sg 337 57.1983 0.283 67
IV.CERT.HHE. 2009-04-07T02:42:08.87 0.3 undecidable manual Sg 216 56.2992 -0.002 71
IV.GIUL.HHZ. 2009-04-07T02:42:07.83 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHN. 2009-04-07T02:42:07.67 0.6 undecidable manual Pg 322 96.3258 0.119 43
IV.SDI.SHZ. 2009-04-07T02:42:05.83 0.6 undecidable manual Pg 154 79.9644 0.814 36
IV.CESI.HHE. 2009-04-07T02:42:05.31 0.3 undecidable manual Pg 331 81.8514 0.002 67
IV.FDMO.HHZ. 2009-04-07T02:42:04.68 0.6 undecidable manual Pg 342 79.1652 -0.211 43
IV.GUAR.HHN. 2009-04-07T02:42:03.21 0.6 undecidable manual Pg 186 62.7927 0.831 37
IV.PTQR.SHZ. 2009-04-07T02:42:03.54 0.3 undecidable manual Sg 178 37.3293 -0.265 69
IV.OFFI.HHN. 2009-04-07T02:42:03.65 0.3 undecidable manual Pg 21 68.4759 0.398 64
IV.VCEL.EHE. 2009-04-07T02:42:03.43 0.3 undecidable manual Sg 84 37.4292 -0.402 67
IV.TERO.HHE. 2009-04-07T02:42:02.16 0.3 undecidable manual Sg 31 34.3434 -0.847 58
IV.MTCE.HHZ. 2009-04-07T02:42:02.36 0.3 undecidable manual Pg 235 64.6908 -0.313 65
IV.CERT.HHE. 2009-04-07T02:42:01.16 0.3 undecidable manual Pg 216 56.2992 -0.212 68
IV.NRCA.SHZ. 2009-04-07T02:42:01.38 0.3 undecidable manual Pg 337 57.1983 -0.14 69
IV.VVLD.HHE. 2009-04-07T02:42:01.05 0.6 undecidable manual Pg 160 57.5979 -0.52 42
IV.INTR.HHN. 2009-04-07T02:42:01.55 0.1 undecidable manual Pg 132 57.3981 0.014 94
IV.MNS.HHE. 2009-04-07T02:42:01.58 0.3 undecidable manual Pg 273 57.8976 -0.043 70
IV.FIAM.HHZ. 2009-04-07T02:42:00.07 0.3 undecidable manual Sg 246 24.2535 -0.151 73
IV.VCEL.EHE. 2009-04-07T02:41:58.39 0.3 undecidable manual Pg 84 37.4292 -0.073 72
IV.FAGN.HHZ. 2009-04-07T02:41:58.99 0.3 undecidable manual Sg 122 19.1697 0.388 70
.CAMP.---. 2009-04-07T02:41:58.68 0.3 undecidable manual Sg 5 19.7691 -0.127 74
IV.PTQR.SHZ. 2009-04-07T02:41:58.27 0.3 undecidable manual Pg 178 37.3293 -0.177 71
IV.TERO.HHE. 2009-04-07T02:41:57.56 0.3 undecidable manual Pg 31 34.3434 -0.427 67
IV.FIAM.HHZ. 2009-04-07T02:41:56.38 0.1 undecidable manual Pg 246 24.2535 0.002 100
.CAMP.---. 2009-04-07T02:41:55.91 0.1 undecidable manual Pg 5 19.7691 0.349 94
IV.FAGN.HHZ. 2009-04-07T02:41:55.78 0.3 undecidable manual Pg 122 19.1697 0.338 71
MN.AQU.HHE. 2009-04-07T02:41:54.12 0.3 undecidable manual Sg 111 1.2987 -0.471 71
MN.AQU.HHE. 2009-04-07T02:41:53.14 0.3 undecidable manual Pg 111 1.2987 0.013 78
IV.CMPO.HHN. 2009-04-07T02:41:49.34 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHE. 2009-04-07T02:41:47.70 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHN. 2009-04-07T02:41:38.59 10.0 undecidable manual Pg 0 0 0
IV.LATE.HHN. 2009-04-07T02:41:35.81 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHZ. 2009-04-07T02:41:34.38 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-04-07T02:41:32.18 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-07T02:41:30.02 10.0 undecidable manual Pg 0 0 0
IV.RMP.HHE. 2009-04-07T02:41:27.80 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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