Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 07-04-2009 and time 15:03:20 (Italy) in region 6 km W L'Aquila (AQ)

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

  • 07-04-2009 13:03:20 (UTC)
  • 07-04-2009 15:03:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3730, 13.3370 at 9 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 8 4326 77806
Lucoli AQ 9 1011 78817
Tornimparte AQ 10 3187 82004
Barete AQ 10 737 82741
Cagnano Amiterno AQ 13 1369 84110
Ocre AQ 15 1167 85277
Fossa AQ 15 721 85998
Capitignano AQ 17 665 86663
Poggio Picenze AQ 18 1136 87799
Sant'Eusanio Forconese AQ 18 394 88193
Montereale AQ 19 2581 90774
Rocca di Cambio AQ 20 533 91307

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km W of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
60 Km E of Terni (111501 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
68 Km W of Chieti (51815 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
73 Km W of Pescara (121014 inhabitants)
83 Km SE of Foligno (57155 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
89 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
13:03:20		 42.373 13.337 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 767379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-07 13:03:20 ± 0.09
Latitude 42.3730 ± 0.0045
Longitude 13.3370 ± 0.0073
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 767379

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 589
Semi-minor axis of confidence ellipse (meter) 389
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
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) 96
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 22
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) 0.70687
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 767379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:31:00

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 767379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:31:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APPI.EHZ. 2009-04-07T13:04:02.57 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHN. 2009-04-07T13:03:51.22 10.0 undecidable manual Pg 0 0 0
IV.PRMA.HHN. 2009-04-07T13:03:48.38 10.0 undecidable manual Pg 0 0 0
IV.FDMO.HHN. 2009-04-07T13:03:44.50 0.1 undecidable manual Sg 345 76.368 0.341 84
IV.CESI.HHN. 2009-04-07T13:03:44.98 0.6 undecidable manual Sg 333 78.4659 0.263 43
IV.SDI.SHZ. 2009-04-07T13:03:41.22 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHE. 2009-04-07T13:03:40.57 0.1 undecidable manual Sg 130 61.494 0.368 86
IV.VVLD.HHE. 2009-04-07T13:03:39.09 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2009-04-07T13:03:38.80 0.6 undecidable manual Sg 212 55.3002 0.253 45
IV.NRCA.SHZ. 2009-04-07T13:03:37.81 0.1 undecidable manual Sg 341 54.2013 -0.441 86
IV.GUAR.HHN. 2009-04-07T13:03:36.25 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHN. 2009-04-07T13:03:35.23 0.3 undecidable manual Pg 333 78.4659 0.629 58
IV.MNS.HHN. 2009-04-07T13:03:35.08 10.0 undecidable manual Sg 0 0 0
IV.OFFI.HHN. 2009-04-07T13:03:33.57 0.3 undecidable manual Pg 24 68.5758 0.496 62
IV.FDMO.HHN. 2009-04-07T13:03:33.60 1.0 undecidable manual Pg 345 76.368 -0.677 19
IV.PTQR.SHZ. 2009-04-07T13:03:33.69 0.1 undecidable manual Sg 172 39.3273 -0.573 85
IV.INTR.HHE. 2009-04-07T13:03:32.44 0.6 undecidable manual Pg 130 61.494 0.447 42
IV.MNS.HHN. 2009-04-07T13:03:31.84 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2009-04-07T13:03:30.58 0.1 undecidable manual Pg 212 55.3002 -0.461 85
IV.NRCA.SHZ. 2009-04-07T13:03:30.67 0.1 undecidable manual Pg 341 54.2013 -0.195 90
IV.FIAM.HHZ. 2009-04-07T13:03:29.03 0.1 undecidable manual Sg 237 21.4674 0.23 95
IV.VCEL.EHE. 2009-04-07T13:03:29.10 0.3 undecidable manual Pg 87 41.3253 0.216 69
IV.FAGN.HHZ. 2009-04-07T13:03:29.41 0.1 undecidable manual Sg 120 23.5542 -0.064 98
IV.PTQR.SHZ. 2009-04-07T13:03:28.08 0.1 undecidable manual Pg 172 39.3273 -0.488 87
.CAMP.---. 2009-04-07T13:03:27.66 0.1 undecidable manual Sg 18 18.9699 -0.369 93
IV.FAGN.HHZ. 2009-04-07T13:03:26.13 0.1 undecidable manual Pg 120 23.5542 0.328 93
IV.FIAM.HHZ. 2009-04-07T13:03:25.60 0.1 undecidable manual Pg 237 21.4674 0.19 96
.CAMP.---. 2009-04-07T13:03:24.81 0.1 undecidable manual Pg 18 18.9699 -0.158 97
MN.AQU.HHZ. 2009-04-07T13:03:24.26 0.1 undecidable manual Sg 112 5.7942 -0.127 100
MN.AQU.HHZ. 2009-04-07T13:03:22.99 0.1 undecidable manual Pg 112 5.7942 0.124 100
NI.AGOR.HHE. 2009-04-07T13:03:21.20 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHZ. 2009-04-07T13:03:16.95 10.0 undecidable manual Pg 0 0 0
IV.MSC.EHZ. 2009-04-07T13:02:56.25 10.0 undecidable manual Pg 0 0 0
IV.FIU.EHZ. 2009-04-07T13:02:50.68 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