Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 06-04-2009 and time 22:26:33 (UTC) in region 4 km NW L'Aquila (AQ)

A magnitude ML 2.0 earthquake occured in region: 4 km NW L'Aquila (AQ), on

  • 06-04-2009 22:26:33 (UTC)
  • 07-04-2009 00:26:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3700, 13.3570 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 4 69753 69753
Scoppito AQ 8 3727 73480
Lucoli AQ 9 1011 74491
Pizzoli AQ 9 4326 78817
Tornimparte AQ 10 3187 82004
Barete AQ 11 737 82741
Ocre AQ 14 1167 83908
Fossa AQ 14 721 84629
Cagnano Amiterno AQ 15 1369 85998
Poggio Picenze AQ 16 1136 87134
Sant'Eusanio Forconese AQ 17 394 87528
Capitignano AQ 17 665 88193
Rocca di Cambio AQ 18 533 88726
Villa Sant'Angelo AQ 19 424 89150
San Demetrio ne' Vestini AQ 19 1854 91004
Montereale AQ 20 2581 93585
Barisciano AQ 20 1828 95413

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km NW of L'Aquila (69753 inhabitants)
43 Km SW of Teramo (54892 inhabitants)
62 Km E of Terni (111501 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
67 Km W of Chieti (51815 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
71 Km W of Pescara (121014 inhabitants)
84 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 		ML 2.0 2009-04-06
22:26:33		 42.37 13.357 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 763609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-06 22:26:33 ± 0.07
Latitude 42.3700 ± 0.0036
Longitude 13.3570 ± 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 763609

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 498
Semi-minor axis of confidence ellipse (meter) 328
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 97
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) 50
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.16732
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 20
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 763609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:26:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FSSB.HHZ. 2009-04-06T22:27:22.04 10.0 undecidable manual Sg 0 0 0
IV.STR3.BHE. 2009-04-06T22:27:19.68 10.0 undecidable manual Pg 0 0 0
IV.AOI.HHE. 2009-04-06T22:27:15.21 10.0 undecidable manual Pg 0 0 0
IV.FSSB.HHZ. 2009-04-06T22:27:03.17 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2009-04-06T22:27:01.44 10.0 undecidable manual Pg 0 0 0
IV.POFI.HHN. 2009-04-06T22:26:59.61 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHE. 2009-04-06T22:26:58.01 0.6 undecidable manual Sg 332 79.4649 0.794 36
IV.FDMO.HHZ. 2009-04-06T22:26:57.03 0.6 undecidable manual Sg 344 77.0673 0.452 41
IV.MURB.HHN. 2009-04-06T22:26:55.27 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHZ. 2009-04-06T22:26:55.20 0.3 undecidable manual Pg 345 129.5703 0.38 56
IV.SNTG.SHZ. 2009-04-06T22:26:53.88 10.0 undecidable manual Pg 0 0 0
IV.CDCA.EHE. 2009-04-06T22:26:53.18 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2009-04-06T22:26:53.80 0.6 undecidable manual Pg 301 118.0929 0.746 34
IV.ZCCA.HHN. 2009-04-06T22:26:53.56 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHZ. 2009-04-06T22:26:52.52 0.6 undecidable manual Sg 131 60.0954 0.49 42
IV.CING.HHN. 2009-04-06T22:26:52.54 0.3 undecidable manual Pg 353 112.2987 0.381 58
IV.GUAR.HHE. 2009-04-06T22:26:52.34 10.0 undecidable manual Sg 0 0 0
IV.GIUL.HHN. 2009-04-06T22:26:51.66 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2009-04-06T22:26:50.53 0.6 undecidable manual Sg 214 55.9995 -0.42 43
IV.NRCA.SHZ. 2009-04-06T22:26:50.61 0.6 undecidable manual Sg 339 55.1004 -0.091 46
IV.GUAR.HHE. 2009-04-06T22:26:49.16 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHZ. 2009-04-06T22:26:49.37 0.3 undecidable manual Pg 323 93.8394 0.054 65
IV.PTQR.SHZ. 2009-04-06T22:26:46.13 0.3 undecidable manual Sg 175 38.8278 -0.228 69
IV.FDMO.HHZ. 2009-04-06T22:26:46.51 0.1 undecidable manual Pg 344 77.0673 -0.228 86
IV.CESI.HHE. 2009-04-06T22:26:46.93 0.3 undecidable manual Pg 332 79.4649 -0.173 65
IV.OFFI.HHZ. 2009-04-06T22:26:46.07 0.3 undecidable manual Pg 23 68.0763 0.717 57
IV.MTCE.HHE. 2009-04-06T22:26:44.41 0.3 undecidable manual Pg 233 63.5919 -0.245 66
IV.INTR.HHZ. 2009-04-06T22:26:44.18 0.3 undecidable manual Pg 131 60.0954 0.068 69
IV.VVLD.HHZ. 2009-04-06T22:26:44.40 0.3 undecidable manual Pg 158 59.6958 0.344 65
IV.TERO.HHE. 2009-04-06T22:26:44.26 0.3 undecidable manual Sg 36 34.5432 -0.954 55
IV.CERT.HHN. 2009-04-06T22:26:43.28 0.1 undecidable manual Pg 214 55.9995 -0.206 90
IV.NRCA.SHZ. 2009-04-06T22:26:43.09 0.3 undecidable manual Pg 339 55.1004 -0.248 67
IV.MNS.HHN. 2009-04-06T22:26:43.23 0.3 undecidable manual Pg 272 55.4001 -0.171 68
IV.FAGN.HHE. 2009-04-06T22:26:41.76 0.6 undecidable manual Sg 122 21.867 0.12 49
IV.VCEL.EHN. 2009-04-06T22:26:41.15 0.1 undecidable manual Pg 86 39.7269 0.177 93
IV.FIAM.HHZ. 2009-04-06T22:26:41.87 0.1 undecidable manual Sg 240 22.755 -0.03 99
.CAMP.---. 2009-04-06T22:26:40.45 0.3 undecidable manual Sg 13 18.87 -0.225 72
IV.PTQR.SHZ. 2009-04-06T22:26:40.77 0.1 undecidable manual Pg 175 38.8278 -0.063 96
IV.TERO.HHE. 2009-04-06T22:26:39.67 0.1 undecidable manual Pg 36 34.5432 -0.501 88
IV.SDI.SHZ. 2009-04-06T22:26:39.45 10.0 undecidable manual Pg 0 0 0
IV.FAGN.HHE. 2009-04-06T22:26:38.38 0.3 undecidable manual Pg 122 21.867 0.273 71
IV.FIAM.HHZ. 2009-04-06T22:26:38.41 0.1 positive manual Pg 240 22.755 0.147 97
.CAMP.---. 2009-04-06T22:26:37.57 0.1 positive manual Pg 13 18.87 0.015 100
MN.AQU.HHZ. 2009-04-06T22:26:36.79 0.1 undecidable manual Sg 117 4.0959 -0.23 98
MN.AQU.HHZ. 2009-04-06T22:26:35.60 0.1 negative manual Pg 117 4.0959 0.159 100
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