Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 11-10-2009 and time 07:54:08 (UTC) in region 4 km S L'Aquila (AQ)

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

  • 11-10-2009 07:54:08 (UTC)
  • 11-10-2009 09:54:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3140, 13.4100 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
Ocre AQ 6 1167 70920
Lucoli AQ 6 1011 71931
Fossa AQ 7 721 72652
Tornimparte AQ 9 3187 75839
Sant'Eusanio Forconese AQ 10 394 76233
Rocca di Cambio AQ 11 533 76766
Poggio Picenze AQ 11 1136 77902
Villa Sant'Angelo AQ 12 424 78326
San Demetrio ne' Vestini AQ 13 1854 80180
Scoppito AQ 14 3727 83907
Rocca di Mezzo AQ 15 1526 85433
Barisciano AQ 15 1828 87261
Fagnano Alto AQ 15 418 87679
Pizzoli AQ 17 4326 92005
Prata d'Ansidonia AQ 17 496 92501
Barete AQ 19 737 93238
Fontecchio AQ 19 369 93607
Borgorose RI 20 4591 98198
Santo Stefano di Sessanio AQ 20 111 98309

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 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)
68 Km W of Pescara (121014 inhabitants)
68 Km E of Terni (111501 inhabitants)
87 Km NE of Velletri (53303 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
92 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 		Md 2.3
ML 2.0 		2009-10-11
07:54:08		 42.314 13.41 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 978159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-10-11 07:54:08 ± 0.08
Latitude 42.3140 ± 0.0045
Longitude 13.4100 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 978159

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 626
Semi-minor axis of confidence ellipse (meter) 434
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
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) 53
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.84626
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 978159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:42:36

Md:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 978159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:42:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SI.ROSI.BHN. 2009-10-11T07:54:42.81 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHE. 2009-10-11T07:54:35.25 10.0 undecidable manual Pg 0 0 0
IV.OFFI.HHN. 2009-10-11T07:54:33.81 10.0 undecidable manual Pg 0 0 0
IV.LPEL.HHZ. 2009-10-11T07:54:30.48 0.6 undecidable manual Sg 115 70.1742 0.591 39
IV.POFI.HHE. 2009-10-11T07:54:29.70 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHN. 2009-10-11T07:54:26.64 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHN. 2009-10-11T07:54:26.17 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHZ. 2009-10-11T07:54:25.24 0.1 undecidable manual Sg 129 52.7028 0 94
IV.CERA.HHN. 2009-10-11T07:54:24.70 0.1 undecidable manual Pg 147 93.9393 0.195 83
IV.VVLD.HHZ. 2009-10-11T07:54:24.00 0.3 undecidable manual Sg 160 52.3032 -1.128 48
IV.LNSS.HHZ. 2009-10-11T07:54:23.82 0.1 undecidable manual Sg 317 44.1225 0.889 73
IV.CESI.HHZ. 2009-10-11T07:54:23.35 0.6 undecidable manual Pg 332 87.0462 -0.089 43
IV.FDMO.HHN. 2009-10-11T07:54:22.84 0.3 undecidable manual Pg 342 84.3489 -0.188 64
IV.TERO.HHZ. 2009-10-11T07:54:21.29 0.1 undecidable manual Sg 25 37.8288 0.036 96
IV.SMA1.EHZ. 2009-10-11T07:54:21.15 0.1 undecidable manual Sg 350 35.6421 0.465 88
IV.VCEL.EHZ. 2009-10-11T07:54:21.69 0.1 undecidable manual Sg 76 36.4413 0.795 77
IV.GUAR.HHE. 2009-10-11T07:54:20.15 0.1 undecidable manual Pg 188 58.1973 1.164 63
IV.LPEL.HHZ. 2009-10-11T07:54:20.48 0.3 undecidable manual Pg 115 70.1742 -0.353 63
IV.MTCE.HHZ. 2009-10-11T07:54:19.70 0.1 undecidable manual Pg 240 63.6918 -0.136 89
IV.NRCA.HHZ. 2009-10-11T07:54:19.67 0.1 undecidable manual Pg 337 62.493 0.012 92
IV.FIAM.HHZ. 2009-10-11T07:54:17.44 0.1 undecidable manual Sg 258 24.5532 -0.213 94
IV.CERT.HHN. 2009-10-11T07:54:17.98 0.1 undecidable manual Pg 221 53.6019 -0.308 88
IV.VVLD.HHZ. 2009-10-11T07:54:17.82 0.1 undecidable manual Pg 160 52.3032 -0.264 89
IV.CAMP.HHE. 2009-10-11T07:54:17.00 0.1 undecidable manual Sg 360 24.6531 -0.684 83
IV.INTR.HHZ. 2009-10-11T07:54:17.97 0.1 undecidable manual Pg 129 52.7028 -0.179 90
IV.LNSS.HHZ. 2009-10-11T07:54:16.66 0.1 undecidable manual Pg 317 44.1225 -0.156 92
IV.T0107.HLN. 2009-10-11T07:54:16.79 0.1 undecidable manual Sg 323 22.0668 -0.078 97
IV.VCEL.EHZ. 2009-10-11T07:54:15.35 0.1 undecidable manual Pg 76 36.4413 -0.291 91
IV.TERO.HHZ. 2009-10-11T07:54:15.18 0.1 undecidable manual Pg 25 37.8288 -0.668 81
IV.SMA1.EHZ. 2009-10-11T07:54:15.26 0.1 undecidable manual Pg 350 35.6421 -0.26 92
IV.FAGN.HHN. 2009-10-11T07:54:14.83 0.1 undecidable manual Sg 110 15.2736 0.046 99
IV.CAMP.HHE. 2009-10-11T07:54:13.50 0.1 undecidable manual Pg 360 24.6531 -0.287 93
IV.FIAM.HHZ. 2009-10-11T07:54:13.69 0.1 undecidable manual Pg 258 24.5532 -0.079 97
IV.T0107.HLN. 2009-10-11T07:54:13.46 0.1 undecidable manual Pg 323 22.0668 0.146 96
IV.T0104.EHZ. 2009-10-11T07:54:12.92 0.1 undecidable manual Sg 311 7.7811 0.068 100
IV.FAGN.HHN. 2009-10-11T07:54:12.21 0.1 undecidable manual Pg 110 15.2736 0.098 98
IV.T0106.HLZ. 2009-10-11T07:54:12.29 0.1 undecidable manual Sg 250 2.2977 0.279 97
IV.T0104.EHZ. 2009-10-11T07:54:11.26 0.1 undecidable manual Pg 311 7.7811 0.263 96
IV.T0106.HLZ. 2009-10-11T07:54:10.93 0.1 undecidable manual Pg 250 2.2977 0.419 94
IV.MSC.EHZ. 2009-10-11T07:53:47.29 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