Earthquake with magnitude of ML 3.2 on date 07-04-2009 and time 01:49:34 (Italy) in region 1 km N L'Aquila (AQ)

A magnitude ML 3.2 earthquake occured in region: 1 km N L'Aquila (AQ), on

  • 06-04-2009 23:49:34 (UTC)
  • 07-04-2009 01:49:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3590, 13.3970 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.

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 1 69753 69753
Lucoli AQ 9 1011 70764
Fossa AQ 10 721 71485
Ocre AQ 10 1167 72652
Tornimparte AQ 11 3187 75839
Scoppito AQ 12 3727 79566
Pizzoli AQ 12 4326 83892
Poggio Picenze AQ 13 1136 85028
Sant'Eusanio Forconese AQ 13 394 85422
Barete AQ 14 737 86159
Villa Sant'Angelo AQ 15 424 86583
Rocca di Cambio AQ 16 533 87116
San Demetrio ne' Vestini AQ 16 1854 88970
Barisciano AQ 16 1828 90798
Cagnano Amiterno AQ 18 1369 92167
Fagnano Alto AQ 19 418 92585
Prata d'Ansidonia AQ 19 496 93081
Rocca di Mezzo AQ 20 1526 94607
Capitignano AQ 20 665 95272

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km N of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
63 Km W of Chieti (51815 inhabitants)
64 Km W of Montesilvano (53738 inhabitants)
66 Km E of Terni (111501 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
68 Km W of Pescara (121014 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
91 Km NE of Velletri (53303 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 3.2 2009-04-06
23:49:34
42.359 13.397 9 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 764229
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-06 23:49:34 ± 0.08
Latitude 42.3590 ± 0.0045
Longitude 13.3970 ± 0.0073
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 764229

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 613
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
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) 44
Number of associated phases, regardless of their use for origin computation 118
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.64
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 4.39858
Number of stations at which the event was observed 108
Number of stations from which data was used for origin computation 40
Magnitude information

ML:3.2

Field Value
Value 3.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 764229
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:27:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
NI.PALA.HHE. 2009-04-06T23:51:22.70 10.0 undecidable manual Sn 0 0 0
SI.MOSI.BHN. 2009-04-06T23:50:51.90 10.0 undecidable manual Pn 0 0 0
SI.ROSI.BHZ. 2009-04-06T23:50:49.11 10.0 undecidable manual Pn 0 0 0
IV.FNVD.HHN. 2009-04-06T23:50:48.58 10.0 undecidable manual Pn 0 0 0
SI.RISI.BHZ. 2009-04-06T23:50:47.70 10.0 undecidable manual Pn 0 0 0
CH.FUORN.HHE. 2009-04-06T23:50:46.61 10.0 undecidable manual Pn 0 0 0
SI.ABSI.BHZ. 2009-04-06T23:50:46.00 10.0 undecidable manual Pn 0 0 0
MN.PDG.HHZ. 2009-04-06T23:50:43.72 10.0 undecidable manual Pn 0 0 0
IV.APPI.EHZ. 2009-04-06T23:50:43.13 0.3 undecidable manual Pn 340 488.2446 1.347 9
NI.ACOM.HHZ. 2009-04-06T23:50:41.95 10.0 undecidable manual Pn 0 0 0
SI.KOSI.BHZ. 2009-04-06T23:50:41.95 10.0 undecidable manual Pn 0 0 0
MN.VSL.HHE. 2009-04-06T23:50:40.81 10.0 undecidable manual Pn 0 0 0
IV.PTCC.SHZ. 2009-04-06T23:50:37.13 10.0 undecidable manual Pn 0 0 0
NI.VINO.HHZ. 2009-04-06T23:50:36.31 10.0 undecidable manual Pn 0 0 0
NI.PALA.HHE. 2009-04-06T23:50:36.97 10.0 undecidable manual Pn 0 0 0
IV.CTI.EHZ. 2009-04-06T23:50:35.51 0.6 undecidable manual Pn 342 432.1452 0.697 9
NI.CGRP.HHZ. 2009-04-06T23:50:33.11 10.0 undecidable manual Pn 0 0 0
NI.SABO.HHZ. 2009-04-06T23:50:29.92 10.0 undecidable manual Pn 0 0 0
GU.FIVI.HLZ. 2009-04-06T23:50:26.07 10.0 undecidable manual Pn 0 0 0
IV.GSCL.SHZ. 2009-04-06T23:50:23.15 10.0 undecidable manual Pn 0 0 0
GU.MAIM.HHZ. 2009-04-06T23:50:21.70 10.0 undecidable manual Pn 0 0 0
IV.MTRZ.HHZ. 2009-04-06T23:50:21.21 10.0 undecidable manual Pn 0 0 0
IV.BDI.HHZ. 2009-04-06T23:50:20.71 10.0 undecidable manual Pn 0 0 0
IV.PII.SHZ. 2009-04-06T23:50:20.65 10.0 undecidable manual Pn 0 0 0
IV.CMPO.HHZ. 2009-04-06T23:50:20.27 10.0 undecidable manual Pn 0 0 0
IV.CRMI.HHZ. 2009-04-06T23:50:17.22 10.0 undecidable manual Pn 0 0 0
IV.SEI.SHZ. 2009-04-06T23:50:16.39 10.0 undecidable manual Pn 0 0 0
IV.SGTA.HHZ. 2009-04-06T23:50:14.17 10.0 undecidable manual Pn 0 0 0
IV.CAFE.HHZ. 2009-04-06T23:50:14.52 10.0 undecidable manual Pn 0 0 0
IV.VMG.SHZ. 2009-04-06T23:50:13.47 10.0 undecidable manual Pn 0 0 0
IV.CDRU.HHN. 2009-04-06T23:50:13.60 10.0 undecidable manual Pn 0 0 0
IV.BLLA.EHZ. 2009-04-06T23:50:12.82 10.0 undecidable manual Pn 0 0 0
IV.MCRV.HHN. 2009-04-06T23:50:12.22 10.0 undecidable manual Pn 0 0 0
IV.CSSN.SHZ. 2009-04-06T23:50:11.35 10.0 undecidable manual Pn 0 0 0
IV.ASQU.HHZ. 2009-04-06T23:50:10.22 10.0 undecidable manual Pn 0 0 0
IV.MRB1.HHZ. 2009-04-06T23:50:10.63 10.0 undecidable manual Pn 0 0 0
IV.MSAG.HHN. 2009-04-06T23:50:10.09 0.3 undecidable manual Pn 108 219.114 1.791 18
IV.FG5.SHZ. 2009-04-06T23:50:10.23 10.0 undecidable manual Pn 0 0 0
IV.GRFL.SHZ. 2009-04-06T23:50:09.38 10.0 undecidable manual Pn 0 0 0
IV.CASP.HHZ. 2009-04-06T23:50:09.34 10.0 undecidable manual Pn 0 0 0
IV.SFI.EHZ. 2009-04-06T23:50:08.63 0.6 undecidable manual Pn 324 212.4318 1.163 18
IV.CRE.HHE. 2009-04-06T23:50:08.80 10.0 undecidable manual Pn 0 0 0
IV.PSB1.HHZ. 2009-04-06T23:50:07.21 10.0 undecidable manual Pn 0 0 0
IV.SGRT.HHE. 2009-04-06T23:50:07.79 0.3 undecidable manual Pn 108 204.6396 1.294 27
IV.CSNT.HHN. 2009-04-06T23:50:07.34 10.0 undecidable manual Pn 0 0 0
IV.RSM.SHZ. 2009-04-06T23:50:06.63 10.0 undecidable manual Pn 0 0 0
IV.PESA.HHZ. 2009-04-06T23:50:05.36 10.0 undecidable manual Pn 0 0 0
IV.MAON.HHZ. 2009-04-06T23:50:04.50 0.3 undecidable manual Pn 273 185.7696 0.348 44
IV.ARCI.HHZ. 2009-04-06T23:50:04.38 10.0 undecidable manual Pn 0 0 0
IV.CDCA.EHZ. 2009-04-06T23:50:03.90 10.0 undecidable manual Pn 0 0 0
IV.PARC.HHZ. 2009-04-06T23:50:03.18 0.3 undecidable manual Pn 327 171.0954 1.042 37
IV.CIGN.HHE. 2009-04-06T23:50:03.84 10.0 undecidable manual Pn 0 0 0
IV.SACR.HHE. 2009-04-06T23:50:03.41 10.0 undecidable manual Pn 0 0 0
IV.SENI.EHZ. 2009-04-06T23:50:01.65 10.0 undecidable manual Pn 0 0 0
IV.PTRJ.HHZ. 2009-04-06T23:50:01.03 10.0 undecidable manual Pn 0 0 0
IV.BADI.EHZ. 2009-04-06T23:50:01.43 0.6 undecidable manual Pn 324 158.2194 1.275 23
IV.PE9.EHZ. 2009-04-06T23:50:01.74 10.0 undecidable manual Pn 0 0 0
IV.CAFI.HHZ. 2009-04-06T23:50:01.29 0.3 undecidable manual Pn 313 158.4192 1.102 38
IV.MODR.HHZ. 2009-04-06T23:50:00.31 10.0 undecidable manual Pn 0 0 0
IV.FSSB.HHZ. 2009-04-06T23:50:00.19 10.0 undecidable manual Pn 0 0 0
IV.MSC.EHZ. 2009-04-06T23:49:59.59 10.0 undecidable manual Pn 0 0 0
IV.SACS.HHZ. 2009-04-06T23:49:59.50 10.0 undecidable manual Pn 0 0 0
IV.SGG.HHE. 2009-04-06T23:49:58.77 10.0 undecidable manual Pn 0 0 0
IV.LATE.HHZ. 2009-04-06T23:49:58.56 10.0 undecidable manual Pg 0 0 0
IV.FDMO.HHZ. 2009-04-06T23:49:58.51 0.6 undecidable manual Sg 342 79.2651 0.344 41
IV.PIEI.HHZ. 2009-04-06T23:49:58.67 0.6 undecidable manual Pn 332 148.0407 0.087 37
IV.RFI.SHZ. 2009-04-06T23:49:58.63 10.0 undecidable manual Pg 0 0 0
IV.VAGA.HHZ. 2009-04-06T23:49:57.88 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-04-06T23:49:56.25 10.0 undecidable manual Pg 0 0 0
IV.TOLF.HHZ. 2009-04-06T23:49:56.09 10.0 undecidable manual Pg 0 0 0
IV.TRIV.HHZ. 2009-04-06T23:49:56.66 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2009-04-06T23:49:56.20 10.0 undecidable manual Pg 0 0 0
IV.AOI.HHN. 2009-04-06T23:49:56.36 0.1 undecidable manual Pg 7 133.1667 0.073 77
IV.FRES.HHZ. 2009-04-06T23:49:56.18 10.0 undecidable manual Pg 0 0 0
IV.BSSO.HHZ. 2009-04-06T23:49:56.67 0.3 undecidable manual Pg 132 133.7661 0.293 55
IV.ARVD.HHZ. 2009-04-06T23:49:55.79 0.3 undecidable manual Pg 344 131.6682 -0.261 56
IV.CING.HHN. 2009-04-06T23:49:53.09 10.0 undecidable manual Pg 0 0 0
IV.GAVE.SHZ. 2009-04-06T23:49:53.25 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHZ. 2009-04-06T23:49:52.77 0.6 undecidable manual Sg 217 56.8986 0.579 40
IV.INTR.HHZ. 2009-04-06T23:49:52.37 0.6 undecidable manual Sg 133 56.7987 0.183 44
IV.MIDA.HHZ. 2009-04-06T23:49:51.64 0.3 undecidable manual Pg 138 106.4157 -0.528 55
IV.ROM9.HHZ. 2009-04-06T23:49:51.22 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-06T23:49:51.77 10.0 undecidable manual Pg 0 0 0
IV.CERA.HHZ. 2009-04-06T23:49:50.61 0.3 undecidable manual Pg 149 98.8233 -0.384 58
IV.ASSB.HHZ. 2009-04-06T23:49:50.45 0.3 undecidable manual Pg 322 96.7254 -0.226 60
IV.RNI2.HHE. 2009-04-06T23:49:50.93 0.3 undecidable manual Pg 139 95.7264 0.404 58
IV.MA9.HHZ. 2009-04-06T23:49:50.27 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHZ. 2009-04-06T23:49:49.25 0.3 undecidable manual Pg 188 89.6436 -0.328 60
IV.RDP.BHZ. 2009-04-06T23:49:49.15 0.1 undecidable manual Pg 220 87.0462 -0.035 85
IV.RMP.HHZ. 2009-04-06T23:49:48.49 0.3 undecidable manual Pg 223 83.4498 -0.136 63
IV.CAFR.HHZ. 2009-04-06T23:49:48.37 0.3 undecidable manual Pg 100 79.365 0.374 61
IV.FDMO.HHZ. 2009-04-06T23:49:47.52 0.1 positive manual Pg 342 79.2651 -0.455 79
IV.CESI.HHZ. 2009-04-06T23:49:47.98 0.3 undecidable manual Pg 331 82.0512 -0.441 59
IV.POFI.HHZ. 2009-04-06T23:49:47.00 0.3 undecidable manual Pg 160 75.7686 -0.446 60
IV.TRTR.HHZ. 2009-04-06T23:49:46.85 0.6 undecidable manual Pg 40 65.2902 1.024 32
IV.OFFI.HHZ. 2009-04-06T23:49:46.76 0.1 positive manual Pg 20 68.0763 0.501 80
IV.PTQR.SHZ. 2009-04-06T23:49:46.99 0.6 undecidable manual Sg 180 37.4292 -0.009 47
IV.MTCE.HHZ. 2009-04-06T23:49:45.72 0.1 positive manual Pg 235 65.49 -0.137 87
IV.GUAR.HHZ. 2009-04-06T23:49:45.21 0.1 positive manual Pg 186 62.9925 -0.269 85
IV.TERO.HHE. 2009-04-06T23:49:45.37 0.6 undecidable manual Sg 30 33.744 -0.664 40
IV.NRCA.SHZ. 2009-04-06T23:49:44.18 0.1 positive manual Pg 336 57.3981 -0.438 83
IV.CERT.HHZ. 2009-04-06T23:49:44.36 0.1 positive manual Pg 217 56.8986 -0.172 88
IV.INTR.HHZ. 2009-04-06T23:49:44.21 0.1 undecidable manual Pg 133 56.7987 -0.314 85
IV.MNS.HHZ. 2009-04-06T23:49:44.56 0.1 positive manual Pg 273 58.6968 -0.252 86
IV.VVLD.HHN. 2009-04-06T23:49:44.26 0.1 positive manual Pg 161 57.3981 -0.357 84
IV.FIAM.HHZ. 2009-04-06T23:49:43.54 0.3 undecidable manual Sg 246 25.0527 0.252 69
IV.LAV9.SHZ. 2009-04-06T23:49:42.06 10.0 undecidable manual Pg 0 0 0
.CAMP.---. 2009-04-06T23:49:41.34 0.3 undecidable manual Sg 3 19.5693 -0.185 70
IV.PTQR.SHZ. 2009-04-06T23:49:41.40 0.1 positive manual Pg 180 37.4292 -0.134 92
IV.FAGN.HHZ. 2009-04-06T23:49:41.66 0.3 undecidable manual Sg 124 18.5703 0.467 66
IV.VCEL.EHZ. 2009-04-06T23:49:41.15 0.1 positive manual Pg 84 36.6411 -0.255 90
IV.TERO.HHE. 2009-04-06T23:49:40.25 0.1 positive manual Pg 30 33.744 -0.723 78
IV.FIAM.HHZ. 2009-04-06T23:49:39.62 0.1 positive manual Pg 246 25.0527 0.228 92
.CAMP.---. 2009-04-06T23:49:38.37 0.1 positive manual Pg 3 19.5693 -0.006 97
IV.FAGN.HHZ. 2009-04-06T23:49:38.53 0.1 undecidable manual Pg 124 18.5703 0.354 91
MN.AQU.HHZ. 2009-04-06T23:49:36.65 0.3 undecidable manual Sg 144 0.6993 -0.5 68
MN.AQU.HHZ. 2009-04-06T23:49:35.87 0.1 negative manual Pg 144 0.6993 0.023 100
IV.STR3.BHE. 2009-04-06T23:48:44.63 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download