Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 06-04-2009 and time 20:44:16 (Italy) in region 3 km S L'Aquila (AQ)

A magnitude ML 2.2 earthquake occured in region: 3 km S L'Aquila (AQ), on

  • 06-04-2009 18:44:16 (UTC)
  • 06-04-2009 20:44:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3240, 13.3980 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 3 69753 69753
Lucoli AQ 6 1011 70764
Ocre AQ 8 1167 71931
Fossa AQ 8 721 72652
Tornimparte AQ 9 3187 75839
Sant'Eusanio Forconese AQ 11 394 76233
Poggio Picenze AQ 12 1136 77369
Rocca di Cambio AQ 12 533 77902
Scoppito AQ 13 3727 81629
Villa Sant'Angelo AQ 13 424 82053
San Demetrio ne' Vestini AQ 14 1854 83907
Pizzoli AQ 15 4326 88233
Barisciano AQ 16 1828 90061
Rocca di Mezzo AQ 16 1526 91587
Fagnano Alto AQ 17 418 92005
Barete AQ 17 737 92742
Prata d'Ansidonia AQ 18 496 93238
Borgorose RI 20 4591 97829

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km S of L'Aquila (69753 inhabitants)
45 Km SW of Teramo (54892 inhabitants)
63 Km W of Chieti (51815 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
65 Km W of Montesilvano (53738 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
67 Km E of Terni (111501 inhabitants)
69 Km W of Pescara (121014 inhabitants)
87 Km NE of Velletri (53303 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
90 Km SE of Foligno (57155 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 2.2 2009-04-06
18:44:16		 42.324 13.398 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 762019
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-06 18:44:16 ± 0.07
Latitude 42.3240 ± 0.0036
Longitude 13.3980 ± 0.0061
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 762019

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 472
Semi-minor axis of confidence ellipse (meter) 227
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
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) 51
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.06120
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 24
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 762019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:24:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ORI.EHE. 2009-04-06T18:45:03.16 10.0 undecidable manual Pg 0 0 0
IV.AOI.HHE. 2009-04-06T18:45:01.38 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2009-04-06T18:44:45.36 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2009-04-06T18:44:44.43 10.0 undecidable manual Pg 0 0 0
IV.FDMO.HHE. 2009-04-06T18:44:42.31 0.1 undecidable manual Sg 342 83.0502 1.047 65
IV.MGAB.HHE. 2009-04-06T18:44:42.25 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHZ. 2009-04-06T18:44:41.93 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-04-06T18:44:39.53 1.0 undecidable manual Sg 153 76.1682 0.107 22
IV.MURB.HHN. 2009-04-06T18:44:38.84 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-06T18:44:37.91 10.0 undecidable manual Pg 0 0 0
IV.CING.HHN. 2009-04-06T18:44:36.29 0.6 undecidable manual Pg 352 117.7932 0.224 40
IV.NRCA.SHZ. 2009-04-06T18:44:35.53 0.1 undecidable manual Sg 338 61.0944 0.114 92
IV.MNS.HHZ. 2009-04-06T18:44:34.72 0.6 undecidable manual Sg 277 59.1963 -0.18 46
IV.MIDA.HHE. 2009-04-06T18:44:33.78 0.6 undecidable manual Pg 137 103.4187 -0.07 43
IV.ASSB.HHZ. 2009-04-06T18:44:33.89 0.3 undecidable manual Pg 323 99.9222 0.58 57
IV.INTR.HHZ. 2009-04-06T18:44:33.92 0.1 undecidable manual Sg 130 54.2013 0.354 89
IV.GIUL.HHE. 2009-04-06T18:44:32.09 0.3 undecidable manual Pg 188 85.7475 0.974 50
IV.CERA.HHZ. 2009-04-06T18:44:32.39 0.6 undecidable manual Pg 147 95.4378 -0.22 42
IV.RNI2.HHE. 2009-04-06T18:44:32.26 1.0 undecidable manual Pg 138 92.7405 0.056 22
IV.FDMO.HHE. 2009-04-06T18:44:30.50 0.1 undecidable manual Pg 342 83.0502 -0.2 87
IV.POFI.HHN. 2009-04-06T18:44:29.33 0.3 undecidable manual Pg 159 72.0723 0.315 65
IV.OFFI.HHZ. 2009-04-06T18:44:29.22 0.6 undecidable manual Pg 19 71.7726 0.255 44
IV.SDI.SHZ. 2009-04-06T18:44:29.70 0.1 undecidable manual Pg 153 76.1682 0.066 90
IV.VCEL.EHZ. 2009-04-06T18:44:29.07 0.3 undecidable manual Sg 78 37.1295 0.056 73
IV.TERO.HHZ. 2009-04-06T18:44:28.81 0.6 undecidable manual Sg 27 37.2294 -0.223 47
IV.PTQR.SHZ. 2009-04-06T18:44:27.45 0.3 undecidable manual Sg 180 33.4443 -0.592 64
IV.NRCA.SHZ. 2009-04-06T18:44:27.04 1.0 undecidable manual Pg 338 61.0944 -0.284 22
IV.MTCE.HHZ. 2009-04-06T18:44:27.48 0.3 undecidable manual Pg 238 63.3921 -0.202 67
IV.VVLD.HHZ. 2009-04-06T18:44:26.15 0.1 undecidable manual Pg 160 53.7018 -0.031 95
IV.INTR.HHZ. 2009-04-06T18:44:26.00 0.1 undecidable manual Pg 130 54.2013 -0.255 91
IV.CERT.HHZ. 2009-04-06T18:44:26.00 0.1 undecidable manual Pg 220 53.9016 -0.206 92
IV.MNS.HHZ. 2009-04-06T18:44:26.73 0.1 undecidable manual Pg 277 59.1963 -0.297 89
IV.GUAR.HHE. 2009-04-06T18:44:26.77 1.0 undecidable manual Pg 187 59.0964 -0.247 22
IV.FIAM.HHZ. 2009-04-06T18:44:25.30 0.3 undecidable manual Sg 255 23.8539 0.139 73
SI.ROSI.BHZ. 2009-04-06T18:44:25.11 10.0 undecidable manual Pg 0 0 0
.CAMP.---. 2009-04-06T18:44:24.50 0.3 undecidable manual Sg 2 23.5542 -0.552 67
IV.VCEL.EHZ. 2009-04-06T18:44:23.45 0.1 undecidable manual Pg 78 37.1295 -0.173 95
IV.FAGN.HHZ. 2009-04-06T18:44:23.05 0.3 undecidable manual Sg 113 16.5723 0.184 74
IV.TERO.HHZ. 2009-04-06T18:44:22.95 0.3 undecidable manual Pg 27 37.2294 -0.686 62
IV.PTQR.SHZ. 2009-04-06T18:44:22.79 0.1 undecidable manual Pg 180 33.4443 -0.278 94
.CAMP.---. 2009-04-06T18:44:21.17 0.1 undecidable manual Pg 2 23.5542 -0.167 97
IV.FIAM.HHZ. 2009-04-06T18:44:21.59 0.1 undecidable manual Pg 255 23.8539 0.194 97
IV.FAGN.HHZ. 2009-04-06T18:44:20.31 0.1 undecidable manual Pg 113 16.5723 0.238 97
MN.AQU.HHZ. 2009-04-06T18:44:19.60 0.3 undecidable manual Sg 6 3.3966 -0.111 76
MN.AQU.HHZ. 2009-04-06T18:44:18.46 0.1 negative manual Pg 6 3.3966 0.205 100
IV.MMME.BHZ. 2009-04-06T18:44:17.10 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