Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 07-04-2009 and time 01:32:13 (Italy) in region 3 km SW L'Aquila (AQ)

A magnitude ML 2.5 earthquake occured in region: 3 km SW L'Aquila (AQ), on

  • 06-04-2009 23:32:13 (UTC)
  • 07-04-2009 01:32:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3270, 13.3760 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 5 1011 70764
Tornimparte AQ 7 3187 73951
Ocre AQ 9 1167 75118
Fossa AQ 10 721 75839
Scoppito AQ 11 3727 79566
Sant'Eusanio Forconese AQ 13 394 79960
Rocca di Cambio AQ 14 533 80493
Poggio Picenze AQ 14 1136 81629
Pizzoli AQ 14 4326 85955
Villa Sant'Angelo AQ 15 424 86379
San Demetrio ne' Vestini AQ 16 1854 88233
Barete AQ 16 737 88970
Rocca di Mezzo AQ 18 1526 90496
Barisciano AQ 18 1828 92324
Fagnano Alto AQ 18 418 92742
Borgorose RI 19 4591 97333
Cagnano Amiterno AQ 19 1369 98702
Prata d'Ansidonia AQ 20 496 99198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SW of L'Aquila (69753 inhabitants)
46 Km SW of Teramo (54892 inhabitants)
62 Km NE of Tivoli (56533 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
65 Km E of Terni (111501 inhabitants)
65 Km W of Chieti (51815 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
71 Km W of Pescara (121014 inhabitants)
87 Km NE of Velletri (53303 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
89 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 2.5 2009-04-06
23:32:13		 42.327 13.376 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 764119
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-06 23:32:13 ± 0.09
Latitude 42.3270 ± 0.0054
Longitude 13.3760 ± 0.0085
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 764119

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 688
Semi-minor axis of confidence ellipse (meter) 539
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 922.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.53
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.21229
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 24
Magnitude information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 764119
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:27:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.VSL.HHE. 2009-04-06T23:33:20.12 10.0 undecidable manual Pg 0 0 0
IV.MODR.HHE. 2009-04-06T23:33:01.82 10.0 undecidable manual Pg 0 0 0
IV.TRIV.HHN. 2009-04-06T23:33:00.07 10.0 undecidable manual Pg 0 0 0
IV.ROM9.HHZ. 2009-04-06T23:32:46.13 10.0 undecidable manual Sg 0 0 0
IV.FDMO.HHN. 2009-04-06T23:32:39.86 0.6 undecidable manual Sg 343 82.1511 1.082 32
IV.LATE.HHE. 2009-04-06T23:32:37.03 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHE. 2009-04-06T23:32:36.88 0.3 undecidable manual Pg 345 134.5653 0.514 54
IV.FSSB.HHN. 2009-04-06T23:32:35.32 10.0 undecidable manual Pg 0 0 0
IV.TRTR.HHE. 2009-04-06T23:32:34.29 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHE. 2009-04-06T23:32:33.49 0.6 undecidable manual Sg 237 62.0934 0.048 46
IV.RNI2.HHN. 2009-04-06T23:32:32.34 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHN. 2009-04-06T23:32:31.11 0.3 undecidable manual Pg 324 98.6235 0.289 62
.INTR.---. 2009-04-06T23:32:31.54 0.6 undecidable manual Sg 129 55.7997 -0.218 45
IV.CERA.HHZ. 2009-04-06T23:32:31.65 0.3 undecidable manual Pg 147 96.7254 1.113 45
IV.ROM9.HHZ. 2009-04-06T23:32:31.02 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHE. 2009-04-06T23:32:29.34 0.6 undecidable manual Pg 187 85.9473 0.474 40
IV.MA9.HHE. 2009-04-06T23:32:29.14 0.6 undecidable manual Pg 224 85.5477 0.335 42
IV.FDMO.HHN. 2009-04-06T23:32:28.32 0.6 undecidable manual Pg 343 82.1511 0.038 45
IV.POFI.HHE. 2009-04-06T23:32:28.51 0.3 undecidable manual Pg 158 73.0713 1.612 36
IV.CAFR.HHN. 2009-04-06T23:32:28.03 0.3 undecidable manual Pg 98 80.4639 0.006 68
IV.CESI.HHZ. 2009-04-06T23:32:28.89 0.3 undecidable manual Pg 333 84.4488 0.251 64
IV.OFFI.HHZ. 2009-04-06T23:32:27.11 0.3 undecidable manual Pg 20 71.9724 0.39 63
.PTQR.SHZ. 2009-04-06T23:32:26.13 0.6 undecidable manual Sg 177 33.9438 0.209 47
IV.TERO.HHE. 2009-04-06T23:32:26.92 0.3 undecidable manual Sg 30 37.629 0.003 73
.NRCA.---. 2009-04-06T23:32:24.83 0.3 undecidable manual Pg 339 60.0954 -0.06 69
IV.GUAR.HHE. 2009-04-06T23:32:24.66 0.3 undecidable manual Pg 185 59.3961 -0.12 69
.INTR.---. 2009-04-06T23:32:24.15 0.3 undecidable manual Pg 129 55.7997 -0.081 70
IV.MNS.HHN. 2009-04-06T23:32:24.57 0.3 undecidable manual Pg 277 57.3981 0.102 69
IV.FAEN.HHE. 2009-04-06T23:32:24.07 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHE. 2009-04-06T23:32:24.75 0.1 undecidable manual Pg 237 62.0934 -0.453 85
.VVLD.---. 2009-04-06T23:32:23.50 0.3 undecidable manual Pg 158 54.7008 -0.559 62
IV.CERT.HHE. 2009-04-06T23:32:23.32 0.1 positive manual Pg 218 53.1024 -0.486 86
.CAMP.---. 2009-04-06T23:32:22.24 0.3 undecidable manual Sg 7 23.2545 -0.36 70
.FIAM.---. 2009-04-06T23:32:22.34 0.6 undecidable manual Sg 253 22.2555 0.063 50
IV.FAGN.HHE. 2009-04-06T23:32:21.38 0.6 undecidable manual Sg 112 18.3705 0.344 47
IV.VCEL.EHE. 2009-04-06T23:32:21.36 0.3 undecidable manual Pg 79 38.7279 -0.245 70
.PTQR.SHZ. 2009-04-06T23:32:20.34 0.1 undecidable manual Pg 177 33.9438 -0.517 88
IV.TERO.HHE. 2009-04-06T23:32:20.67 0.1 undecidable manual Pg 30 37.629 -0.764 79
.FIAM.---. 2009-04-06T23:32:18.71 0.1 positive manual Pg 253 22.2555 -0.047 99
.CAMP.---. 2009-04-06T23:32:18.50 0.1 undecidable manual Pg 7 23.2545 -0.443 91
MN.AQU.HHN. 2009-04-06T23:32:17.61 0.3 undecidable manual Sg 36 3.5964 0.295 73
IV.FAGN.HHE. 2009-04-06T23:32:17.96 0.1 undecidable manual Pg 112 18.3705 -0.08 99
MN.AQU.HHN. 2009-04-06T23:32:16.06 0.1 negative manual Pg 36 3.5964 0.172 100
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
Waveforms Seismic signals in miniseed + resp format Download