Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 26-04-2009 and time 13:44:40 (Italy) in region 3 km N L'Aquila (AQ)

A magnitude ML 2.0 earthquake occured in region: 3 km N L'Aquila (AQ), on

  • 26-04-2009 11:44:40 (UTC)
  • 26-04-2009 13:44:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3740, 13.4080 at 7 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 11 1011 70764
Fossa AQ 11 721 71485
Ocre AQ 11 1167 72652
Pizzoli AQ 12 4326 76978
Scoppito AQ 12 3727 80705
Poggio Picenze AQ 13 1136 81841
Tornimparte AQ 13 3187 85028
Sant'Eusanio Forconese AQ 13 394 85422
Barete AQ 14 737 86159
San Demetrio ne' Vestini AQ 16 1854 88013
Villa Sant'Angelo AQ 16 424 88437
Barisciano AQ 16 1828 90265
Rocca di Cambio AQ 17 533 90798
Cagnano Amiterno AQ 18 1369 92167
Capitignano AQ 19 665 92832
Fagnano Alto AQ 19 418 93250
Prata d'Ansidonia AQ 20 496 93746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km N of L'Aquila (69753 inhabitants)
40 Km SW of Teramo (54892 inhabitants)
63 Km W of Chieti (51815 inhabitants)
63 Km W of Montesilvano (53738 inhabitants)
66 Km E of Terni (111501 inhabitants)
67 Km W of Pescara (121014 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
70 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
92 Km NE of Velletri (53303 inhabitants)
93 Km NE of Roma (2864731 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 2.6
ML 2.0 		2009-04-26
11:44:40		 42.374 13.408 7 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 837159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-26 11:44:40 ± 0.09
Latitude 42.3740 ± 0.0045
Longitude 13.4080 ± 0.0073
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 837159

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 381
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
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) 66
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.86605
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 837159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:52:37

Md:2.6

Field Value
Value 2.6
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 837159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:52:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ESLN.BHZ. 2009-04-26T11:45:25.26 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHE. 2009-04-26T11:45:24.59 10.0 undecidable manual Pg 0 0 0
IV.CING.HHE. 2009-04-26T11:45:16.89 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2009-04-26T11:45:10.02 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHE. 2009-04-26T11:45:05.96 10.0 undecidable manual Pg 0 0 0
IV.TRTR.HHE. 2009-04-26T11:45:05.13 10.0 undecidable manual Pg 0 0 0
I1.MSCL.BHN. 2009-04-26T11:45:05.82 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-04-26T11:45:05.73 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHN. 2009-04-26T11:45:04.25 10.0 undecidable manual Sg 0 0 0
IV.LPEL.HHE. 2009-04-26T11:45:04.45 0.6 undecidable manual Sg 119 73.2711 0.676 38
BA.PZUN.HHN. 2009-04-26T11:45:03.50 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHN. 2009-04-26T11:45:02.59 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHE. 2009-04-26T11:45:00.05 0.1 undecidable manual Sg 134 57.2982 0.555 81
IV.CERT.HHN. 2009-04-26T11:45:00.32 0.1 undecidable manual Sg 217 58.6968 0.437 84
IV.NRCA.SHZ. 2009-04-26T11:44:59.64 0.1 undecidable manual Sg 335 56.3991 0.384 85
IV.ORI.EHE. 2009-04-26T11:44:59.91 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHN. 2009-04-26T11:44:59.34 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-26T11:44:58.88 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHN. 2009-04-26T11:44:58.15 10.0 undecidable manual Pg 0 0 0
IV.MNS.HHZ. 2009-04-26T11:44:58.75 10.0 undecidable manual Sg 0 0 0
IV.ASSB.HHZ. 2009-04-26T11:44:57.50 0.6 undecidable manual Pg 321 96.126 -0.14 42
IV.GIUL.HHE. 2009-04-26T11:44:56.27 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHE. 2009-04-26T11:44:55.28 0.3 undecidable manual Pg 330 81.1521 -0.056 65
IV.MNS.HHZ. 2009-04-26T11:44:55.50 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-04-26T11:44:55.13 0.3 undecidable manual Pg 156 80.7636 -0.145 64
IV.GUAR.HHN. 2009-04-26T11:44:55.38 10.0 undecidable manual Pg 0 0 0
IV.OFFI.HHZ. 2009-04-26T11:44:54.10 0.6 undecidable manual Pg 20 66.2781 1.062 32
IV.VCEL.EHZ. 2009-04-26T11:44:54.01 0.1 undecidable manual Sg 86 35.5422 0.479 87
IV.FDMO.HHE. 2009-04-26T11:44:54.54 0.3 undecidable manual Pg 341 78.0663 -0.316 62
IV.LPEL.HHE. 2009-04-26T11:44:53.87 0.3 undecidable manual Pg 119 73.2711 -0.252 64
IV.TERO.HHZ. 2009-04-26T11:44:52.01 0.1 undecidable manual Sg 30 31.9458 -0.309 90
IV.FIAM.HHZ. 2009-04-26T11:44:51.19 0.1 undecidable manual Sg 244 26.5512 0.674 82
IV.INTR.HHE. 2009-04-26T11:44:51.44 0.1 undecidable manual Pg 134 57.2982 -0.213 88
IV.NRCA.SHZ. 2009-04-26T11:44:51.02 0.1 undecidable manual Pg 335 56.3991 -0.497 83
IV.CERT.HHN. 2009-04-26T11:44:51.60 0.1 undecidable manual Pg 217 58.6968 -0.276 87
IV.VVLD.HHZ. 2009-04-26T11:44:51.34 0.1 undecidable manual Pg 162 58.6968 -0.527 82
IV.VCEL.EHZ. 2009-04-26T11:44:48.20 0.1 undecidable manual Pg 86 35.5422 -0.012 96
IV.CAMP.HHZ. 2009-04-26T11:44:48.23 0.1 undecidable manual Sg 0 17.9709 0.539 88
IV.PTQR.SHZ. 2009-04-26T11:44:48.43 0.1 positive manual Pg 181 39.0276 -0.413 87
IV.LNSS.HHE. 2009-04-26T11:44:48.53 0.1 undecidable manual Pg 310 39.4272 -0.367 88
IV.TERO.HHZ. 2009-04-26T11:44:47.13 0.1 undecidable manual Pg 30 31.9458 -0.382 89
IV.FIAM.HHZ. 2009-04-26T11:44:46.50 0.1 undecidable manual Pg 244 26.5512 0.029 97
MN.VSL.HHZ. 2009-04-26T11:44:46.20 10.0 undecidable manual Pg 0 0 0
IV.CAMP.HHZ. 2009-04-26T11:44:45.06 0.1 undecidable manual Pg 0 17.9709 0.22 94
MN.AQU.HHZ. 2009-04-26T11:44:43.40 0.1 undecidable manual Sg 193 2.2977 -0.234 97
MN.AQU.HHZ. 2009-04-26T11:44:42.42 0.1 undecidable manual Pg 193 2.2977 -0.073 100
MN.TIR.HHE. 2009-04-26T11:44:19.44 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