Earthquake with magnitude of ML 3.0 on date 07-04-2009 and time 20:40:46 (UTC) in region 4 km W L'Aquila (AQ)

A magnitude ML 3.0 earthquake occured in region: 4 km W L'Aquila (AQ), on

  • 07-04-2009 20:40:46 (UTC)
  • 07-04-2009 22:40:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3460, 13.3460 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 4 69753 69753
Lucoli AQ 6 1011 70764
Tornimparte AQ 7 3187 73951
Scoppito AQ 8 3727 77678
Pizzoli AQ 11 4326 82004
Ocre AQ 13 1167 83171
Barete AQ 13 737 83908
Fossa AQ 13 721 84629
Sant'Eusanio Forconese AQ 16 394 85023
Cagnano Amiterno AQ 16 1369 86392
Poggio Picenze AQ 16 1136 87528
Rocca di Cambio AQ 17 533 88061
Villa Sant'Angelo AQ 18 424 88485
San Demetrio ne' Vestini AQ 19 1854 90339
Borgorose RI 19 4591 94930
Capitignano AQ 20 665 95595

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km W of L'Aquila (69753 inhabitants)
46 Km SW of Teramo (54892 inhabitants)
62 Km NE of Tivoli (56533 inhabitants)
62 Km E of Terni (111501 inhabitants)
64 Km NE of Guidonia Montecelio (88673 inhabitants)
68 Km W of Chieti (51815 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
73 Km W of Pescara (121014 inhabitants)
86 Km SE of Foligno (57155 inhabitants)
87 Km NE of Velletri (53303 inhabitants)
87 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 3.0 2009-04-07
20:40:46
42.346 13.346 9 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 769489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-07 20:40:46 ± 0.09
Latitude 42.3460 ± 0.0054
Longitude 13.3460 ± 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 769489

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 710
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
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) 37
Number of associated phases, regardless of their use for origin computation 97
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.61
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.41014
Number of stations at which the event was observed 80
Number of stations from which data was used for origin computation 34
Magnitude information

ML:3.0

Field Value
Value 3.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 769489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:33:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
NI.VINO.HHN. 2009-04-07T20:42:32.86 10.0 undecidable manual Sn 0 0 0
IV.STR3.BHZ. 2009-04-07T20:42:29.50 10.0 undecidable manual Sn 0 0 0
SI.RISI.BHN. 2009-04-07T20:41:59.86 10.0 undecidable manual Pn 0 0 0
SI.ABSI.BHZ. 2009-04-07T20:41:58.00 10.0 undecidable manual Pn 0 0 0
IV.APPI.EHZ. 2009-04-07T20:41:55.91 10.0 undecidable manual Pn 0 0 0
SI.KOSI.BHZ. 2009-04-07T20:41:54.50 10.0 undecidable manual Pn 0 0 0
IV.PTCC.SHZ. 2009-04-07T20:41:50.50 10.0 undecidable manual Pn 0 0 0
NI.VINO.HHN. 2009-04-07T20:41:48.15 10.0 undecidable manual Pn 0 0 0
IV.CTI.EHZ. 2009-04-07T20:41:48.20 10.0 undecidable manual Pn 0 0 0
IV.CMPR.HHE. 2009-04-07T20:41:39.68 10.0 undecidable manual Pn 0 0 0
IV.CDCA.EHZ. 2009-04-07T20:41:37.68 10.0 undecidable manual Pn 0 0 0
IV.SENI.EHE. 2009-04-07T20:41:35.81 10.0 undecidable manual Pn 0 0 0
IV.AMUR.HHZ. 2009-04-07T20:41:34.02 10.0 undecidable manual Pn 0 0 0
IV.CDRU.HHE. 2009-04-07T20:41:33.02 10.0 undecidable manual Pn 0 0 0
IV.MRLC.HHZ. 2009-04-07T20:41:31.22 10.0 undecidable manual Pn 0 0 0
IV.MRVN.HHZ. 2009-04-07T20:41:29.28 10.0 undecidable manual Pn 0 0 0
IV.SACS.HHE. 2009-04-07T20:41:27.23 10.0 undecidable manual Sg 0 0 0
IV.MCRV.HHZ. 2009-04-07T20:41:25.20 10.0 undecidable manual Pn 0 0 0
IV.ASQU.HHZ. 2009-04-07T20:41:25.55 10.0 undecidable manual Pn 0 0 0
IV.SGTA.HHZ. 2009-04-07T20:41:24.80 10.0 undecidable manual Pn 0 0 0
IV.MSAG.HHZ. 2009-04-07T20:41:24.45 10.0 undecidable manual Pn 0 0 0
IV.STR3.BHZ. 2009-04-07T20:41:23.23 10.0 undecidable manual Pn 0 0 0
IV.SFI.EHN. 2009-04-07T20:41:22.47 10.0 undecidable manual Pn 0 0 0
IV.RSM.HHZ. 2009-04-07T20:41:22.54 10.0 undecidable manual Pn 0 0 0
IV.CING.HHE. 2009-04-07T20:41:21.13 0.1 undecidable manual Sg 354 114.7962 1.13 58
IV.SGRT.HHZ. 2009-04-07T20:41:21.54 10.0 undecidable manual Pn 0 0 0
IV.GRFL.SHZ. 2009-04-07T20:41:20.87 10.0 undecidable manual Pn 0 0 0
IV.PESA.HHZ. 2009-04-07T20:41:20.02 10.0 undecidable manual Pn 0 0 0
IV.SACR.HHZ. 2009-04-07T20:41:15.43 10.0 undecidable manual Pn 0 0 0
IV.MAON.HHZ. 2009-04-07T20:41:15.86 10.0 undecidable manual Pn 0 0 0
IV.BADI.EHZ. 2009-04-07T20:41:14.17 10.0 undecidable manual Pn 0 0 0
IV.FG2.SHZ. 2009-04-07T20:41:14.68 10.0 undecidable manual Pn 0 0 0
IV.ARCI.HHZ. 2009-04-07T20:41:14.52 10.0 undecidable manual Pn 0 0 0
IV.CAFI.HHZ. 2009-04-07T20:41:13.54 0.1 undecidable manual Pn 315 156.5211 1.342 47
IV.SGG.HHE. 2009-04-07T20:41:13.56 10.0 undecidable manual Pn 0 0 0
IV.BSSO.HHZ. 2009-04-07T20:41:12.54 10.0 undecidable manual Pn 0 0 0
IV.PTRJ.HHZ. 2009-04-07T20:41:12.94 10.0 undecidable manual Pn 0 0 0
IV.VAGA.HHZ. 2009-04-07T20:41:12.46 10.0 undecidable manual Pn 0 0 0
IV.FSSB.HHZ. 2009-04-07T20:41:12.57 0.1 positive manual Pn 343 156.3213 0.392 71
IV.MSC.EHZ. 2009-04-07T20:41:12.11 10.0 undecidable manual Pg 0 0 0
IV.MODR.HHZ. 2009-04-07T20:41:11.55 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHN. 2009-04-07T20:41:11.24 0.1 undecidable manual Pg 334 147.4413 0.435 73
IV.GUMA.HHN. 2009-04-07T20:41:10.89 0.1 undecidable manual Sg 359 79.4649 0.326 85
IV.CIGN.HHZ. 2009-04-07T20:41:10.78 0.1 positive manual Pg 120 149.6391 -0.366 73
IV.FDMO.HHE. 2009-04-07T20:41:10.87 0.1 undecidable manual Sg 345 79.4649 0.317 86
IV.SACS.HHE. 2009-04-07T20:41:10.40 10.0 undecidable manual Pg 0 0 0
IV.RFI.SHZ. 2009-04-07T20:41:10.46 10.0 positive manual Pg 0 0 0
IV.CESX.HHZ. 2009-04-07T20:41:09.13 10.0 undecidable manual Pg 0 0 0
IV.RNI2.HHN. 2009-04-07T20:41:09.50 10.0 undecidable manual Pg 0 0 0
IV.AOI.HHZ. 2009-04-07T20:41:09.13 0.1 undecidable manual Pg 9 135.1647 0.225 78
IV.FRES.HHZ. 2009-04-07T20:41:09.34 10.0 undecidable manual Pg 0 0 0
IV.LATE.HHZ. 2009-04-07T20:41:08.74 0.6 undecidable manual Pg 284 129.5703 0.687 35
IV.MGAB.HHN. 2009-04-07T20:41:07.19 0.1 undecidable manual Pg 302 118.6923 0.813 67
IV.TOLF.HHZ. 2009-04-07T20:41:07.57 10.0 undecidable manual Pg 0 0 0
IV.TRIV.HHE. 2009-04-07T20:41:07.35 0.1 undecidable manual Pg 123 118.1928 1.059 60
IV.INTR.HHZ. 2009-04-07T20:41:05.93 0.1 undecidable manual Sg 129 58.9965 0.822 75
IV.CING.HHE. 2009-04-07T20:41:05.60 0.1 undecidable manual Pg 354 114.7962 -0.176 82
IV.NRCA.HHZ. 2009-04-07T20:41:04.90 0.1 undecidable manual Sg 341 57.2982 0.26 90
IV.ROM9.HHZ. 2009-04-07T20:41:04.73 10.0 undecidable manual Pg 0 0 0
IV.MIDA.HHN. 2009-04-07T20:41:04.49 0.1 undecidable manual Pg 136 108.2139 -0.261 82
IV.CERA.HHZ. 2009-04-07T20:41:03.62 0.3 undecidable manual Pg 146 99.8223 0.153 64
IV.MA9.HHZ. 2009-04-07T20:41:03.23 10.0 undecidable manual Pg 0 0 0
IV.LAV9.SHZ. 2009-04-07T20:41:03.55 10.0 undecidable manual Pg 0 0 0
IV.POFI.HHE. 2009-04-07T20:41:03.40 10.0 undecidable manual Pg 0 0 0
IV.RDP.BHZ. 2009-04-07T20:41:01.37 0.6 undecidable manual Pg 219 83.3499 0.446 41
IV.RMP.HHZ. 2009-04-07T20:41:01.90 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHE. 2009-04-07T20:41:01.74 0.1 undecidable manual Pg 185 87.7455 0.141 87
IV.GUMA.HHN. 2009-04-07T20:41:00.39 0.1 undecidable manual Pg 359 79.4649 0.063 90
IV.VCEL.EHZ. 2009-04-07T20:41:00.65 0.6 undecidable manual Sg 82 40.8258 0.392 45
IV.CAFR.HHN. 2009-04-07T20:41:00.81 0.1 positive manual Pg 99 83.1501 -0.085 89
IV.CESI.HHZ. 2009-04-07T20:41:00.28 0.1 undecidable manual Pg 334 81.4518 -0.352 85
IV.FDMO.HHE. 2009-04-07T20:40:59.51 0.1 positive manual Pg 345 79.4649 -0.812 73
IV.TRTR.HHZ. 2009-04-07T20:40:59.21 0.1 positive manual Pg 42 69.0753 0.484 84
.TERO.---. 2009-04-07T20:40:59.94 0.6 undecidable manual Sg 34 37.2294 0.654 42
IV.LNSS.HHZ. 2009-04-07T20:40:58.73 0.6 undecidable manual Sg 319 37.9287 -0.741 40
IV.GUAR.HHZ. 2009-04-07T20:40:58.66 0.1 positive manual Pg 183 61.2942 1.134 65
IV.PTQR.SHZ. 2009-04-07T20:40:58.57 0.3 undecidable manual Sg 173 36.2415 -0.456 67
IV.MTCE.HHZ. 2009-04-07T20:40:57.14 0.1 undecidable manual Pg 234 61.2942 -0.38 87
IV.INTR.HHZ. 2009-04-07T20:40:56.68 0.1 undecidable manual Pg 129 58.9965 -0.498 86
IV.NRCA.HHZ. 2009-04-07T20:40:56.09 0.1 positive manual Pg 341 57.2982 -0.813 76
IV.VVLD.HHZ. 2009-04-07T20:40:56.51 0.1 positive manual Pg 157 57.5979 -0.444 87
IV.CERT.HHN. 2009-04-07T20:40:55.89 0.1 undecidable manual Pg 214 53.3022 -0.402 88
IV.MNS.HHZ. 2009-04-07T20:40:55.93 0.1 undecidable manual Pg 275 54.7008 -0.579 84
IV.FAGN.HHZ. 2009-04-07T20:40:54.50 0.1 undecidable manual Sg 115 21.4674 0.141 99
IV.FIAM.HHE. 2009-04-07T20:40:54.28 0.3 undecidable manual Sg 245 20.6682 0.157 74
IV.VCEL.EHZ. 2009-04-07T20:40:53.58 0.1 undecidable manual Pg 82 40.8258 -0.798 78
IV.CAMP.HHZ. 2009-04-07T20:40:53.67 0.1 undecidable manual Sg 14 21.6672 -0.753 83
IV.LNSS.HHZ. 2009-04-07T20:40:53.26 0.1 undecidable manual Pg 319 37.9287 -0.663 83
IV.PTQR.SHZ. 2009-04-07T20:40:53.32 0.1 undecidable manual Pg 173 36.2415 -0.346 92
.TERO.---. 2009-04-07T20:40:52.65 0.1 positive manual Pg 34 37.2294 -1.166 67
IV.FIAM.HHE. 2009-04-07T20:40:51.03 0.1 positive manual Pg 245 20.6682 0.195 98
IV.CAMP.HHZ. 2009-04-07T20:40:50.62 0.1 positive manual Pg 14 21.6672 -0.393 94
IV.FAGN.HHZ. 2009-04-07T20:40:50.89 0.1 undecidable manual Pg 115 21.4674 -0.081 100
IV.T0104.EHE. 2009-04-07T20:40:49.63 0.1 undecidable manual Sg 336 1.6983 0.248 100
MN.AQU.HHZ. 2009-04-07T20:40:49.91 0.3 undecidable manual Sg 79 4.5954 0.17 76
IV.T0104.EHE. 2009-04-07T20:40:48.34 0.1 undecidable manual Pg 336 1.6983 0.244 100
MN.AQU.HHZ. 2009-04-07T20:40:48.57 0.1 negative manual Pg 79 4.5954 0.268 99
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