Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 07-04-2009 and time 23:11:34 (Italy) in region 6 km NW L'Aquila (AQ)

A magnitude ML 2.0 earthquake occured in region: 6 km NW L'Aquila (AQ), on

  • 07-04-2009 21:11:34 (UTC)
  • 07-04-2009 23:11:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3830, 13.3410 at 11 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 6 69753 69753
Scoppito AQ 7 3727 73480
Pizzoli AQ 7 4326 77806
Barete AQ 9 737 78543
Lucoli AQ 10 1011 79554
Tornimparte AQ 11 3187 82741
Cagnano Amiterno AQ 13 1369 84110
Ocre AQ 15 1167 85277
Fossa AQ 16 721 85998
Capitignano AQ 16 665 86663
Montereale AQ 18 2581 89244
Poggio Picenze AQ 18 1136 90380
Sant'Eusanio Forconese AQ 18 394 90774
Campotosto AQ 20 542 91316

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km NW of L'Aquila (69753 inhabitants)
43 Km SW of Teramo (54892 inhabitants)
60 Km E of Terni (111501 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
68 Km W of Chieti (51815 inhabitants)
72 Km W of Pescara (121014 inhabitants)
82 Km SE of Foligno (57155 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
90 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 2.1
ML 2.0 		2009-04-07
21:11:34		 42.383 13.341 11 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 769689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-07 21:11:34 ± 0.05
Latitude 42.3830 ± 0.0027
Longitude 13.3410 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 769689

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 455
Semi-minor axis of confidence ellipse (meter) 332
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 22
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.82828
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:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 769689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:33:43

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 769689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:33:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GALF.HHE. 2009-04-07T21:12:22.20 10.0 undecidable manual Pg 0 0 0
IV.BULG.HHN. 2009-04-07T21:12:16.20 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2009-04-07T21:12:14.94 10.0 undecidable manual Pg 0 0 0
IV.CING.HHN. 2009-04-07T21:12:09.85 10.0 undecidable manual Sg 0 0 0
IV.CING.HHN. 2009-04-07T21:12:02.95 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-07T21:11:57.43 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHE. 2009-04-07T21:11:53.36 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHE. 2009-04-07T21:11:52.40 0.1 undecidable manual Sg 212 56.3991 0.1 92
IV.FDMO.HHZ. 2009-04-07T21:11:52.50 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHE. 2009-04-07T21:11:51.55 0.1 undecidable manual Sg 340 53.3022 0.08 93
IV.ASSB.HHN. 2009-04-07T21:11:50.61 0.1 undecidable manual Pg 323 91.9413 0.295 83
IV.CESI.HHN. 2009-04-07T21:11:50.27 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHE. 2009-04-07T21:11:48.59 10.0 undecidable manual Pg 0 0 0
IV.OFFI.HHZ. 2009-04-07T21:11:47.81 10.0 undecidable manual Pg 0 0 0
IV.PTQR.SHZ. 2009-04-07T21:11:47.81 0.1 undecidable manual Sg 173 40.3263 -0.184 93
IV.LNSS.HHE. 2009-04-07T21:11:46.44 0.1 undecidable manual Sg 315 34.6431 -0.044 97
IV.TERO.HHN. 2009-04-07T21:11:45.83 0.1 undecidable manual Sg 39 34.2435 -0.547 86
IV.CERT.HHE. 2009-04-07T21:11:44.66 0.1 undecidable manual Pg 212 56.3991 -0.189 90
IV.MNS.HHZ. 2009-04-07T21:11:44.28 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHE. 2009-04-07T21:11:44.58 0.1 undecidable manual Pg 340 53.3022 0.212 90
IV.FAGN.HHZ. 2009-04-07T21:11:43.78 0.1 undecidable manual Sg 123 23.754 0.199 96
IV.PTQR.SHZ. 2009-04-07T21:11:42.29 0.1 undecidable manual Pg 173 40.3263 -0.073 95
IV.VCEL.EHE. 2009-04-07T21:11:42.76 0.1 undecidable manual Pg 88 40.9257 0.295 91
IV.FIAM.HHZ. 2009-04-07T21:11:42.86 0.1 undecidable manual Sg 235 22.3554 -0.331 93
IV.LNSS.HHE. 2009-04-07T21:11:41.64 0.1 undecidable manual Pg 315 34.6431 0.153 95
IV.CAMP.HHE. 2009-04-07T21:11:41.70 0.1 undecidable manual Sg 18 17.871 -0.169 97
IV.TERO.HHN. 2009-04-07T21:11:41.17 0.1 undecidable manual Pg 39 34.2435 -0.254 93
IV.FAGN.HHZ. 2009-04-07T21:11:40.00 0.1 undecidable manual Pg 123 23.754 0.187 96
IV.FIAM.HHZ. 2009-04-07T21:11:39.68 0.1 undecidable manual Pg 235 22.3554 0.093 98
IV.CAMP.HHE. 2009-04-07T21:11:38.97 0.1 undecidable manual Pg 18 17.871 0.143 98
IV.T0104.EHZ. 2009-04-07T21:11:38.21 0.1 undecidable manual Sg 185 2.4975 -0.226 99
MN.AQU.HHZ. 2009-04-07T21:11:38.74 0.1 undecidable manual Sg 122 5.994 -0.131 100
IV.T0104.EHZ. 2009-04-07T21:11:37.01 0.1 undecidable manual Pg 185 2.4975 0.166 100
MN.AQU.HHZ. 2009-04-07T21:11:37.31 0.1 undecidable manual Pg 122 5.994 0.218 98
BA.PZUN.HHZ. 2009-04-07T21:11:10.32 10.0 undecidable manual Pg 0 0 0
IV.GROG.HHZ. 2009-04-07T21:11:09.26 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHN. 2009-04-07T21:11:05.50 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHE. 2009-04-07T21:10:49.43 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