Earthquake with magnitude of ML 3.4 on date 07-04-2009 and time 10:00:52 (Italy) in region 3 km N L'Aquila (AQ)

A magnitude ML 3.4 earthquake occured in region: 3 km N L'Aquila (AQ), on

  • 07-04-2009 08:00:52 (UTC)
  • 07-04-2009 10:00:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3830, 13.3980 at 15 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 3 69753 69753
Pizzoli AQ 10 4326 74079
Lucoli AQ 11 1011 75090
Scoppito AQ 12 3727 78817
Barete AQ 12 737 79554
Fossa AQ 12 721 80275
Ocre AQ 13 1167 81442
Tornimparte AQ 13 3187 84629
Poggio Picenze AQ 14 1136 85765
Sant'Eusanio Forconese AQ 15 394 86159
Cagnano Amiterno AQ 17 1369 87528
San Demetrio ne' Vestini AQ 17 1854 89382
Villa Sant'Angelo AQ 17 424 89806
Barisciano AQ 17 1828 91634
Capitignano AQ 17 665 92299
Rocca di Cambio AQ 18 533 92832
Crognaleto TE 20 1297 94129
Campotosto AQ 20 542 94671

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)
65 Km E of Terni (111501 inhabitants)
68 Km W of Pescara (121014 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
70 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km SE of Foligno (57155 inhabitants)
93 Km NE of Velletri (53303 inhabitants)
93 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 3.1
ML 3.4
2009-04-07
08:00:52
42.383 13.398 15 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 766169
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-07 08:00:52 ± 0.06
Latitude 42.3830 ± 0.0036
Longitude 13.3980 ± 0.0049
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 766169

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 50
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 133
Circular confidence region, given by single value of horizontal uncertainty (meter) 565.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 101
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.16282
Number of stations at which the event was observed 88
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:3.4

Field Value
Value 3.4
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 766169
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:29:34

Md:3.1

Field Value
Value 3.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 766169
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:29:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRMO.HHZ. 2009-04-07T08:02:05.05 10.0 undecidable manual Pn 0 0 0
SI.KOSI.BHZ. 2009-04-07T08:01:59.61 10.0 undecidable manual Pn 0 0 0
NI.ACOM.HHZ. 2009-04-07T08:01:57.75 10.0 undecidable manual Pn 0 0 0
IV.PTCC.SHZ. 2009-04-07T08:01:54.18 10.0 undecidable manual Pn 0 0 0
IV.CTI.EHZ. 2009-04-07T08:01:53.09 10.0 undecidable manual Pn 0 0 0
NI.PALA.HHZ. 2009-04-07T08:01:52.81 10.0 undecidable manual Pn 0 0 0
IV.PSB1.HHE. 2009-04-07T08:01:50.13 10.0 undecidable manual Pn 0 0 0
NI.CGRP.HHZ. 2009-04-07T08:01:49.13 10.0 undecidable manual Pn 0 0 0
IV.MSRU.BHZ. 2009-04-07T08:01:47.95 10.0 undecidable manual Pn 0 0 0
IV.CMPR.HHZ. 2009-04-07T08:01:43.06 10.0 undecidable manual Pn 0 0 0
IV.GSCL.SHZ. 2009-04-07T08:01:41.22 10.0 undecidable manual Pn 0 0 0
IV.AMUR.HHN. 2009-04-07T08:01:40.47 10.0 undecidable manual Pn 0 0 0
IV.MRVN.HHE. 2009-04-07T08:01:38.84 10.0 undecidable manual Pn 0 0 0
IV.MTRZ.HHZ. 2009-04-07T08:01:38.47 10.0 undecidable manual Pn 0 0 0
IV.MRLC.HHZ. 2009-04-07T08:01:37.56 10.0 undecidable manual Pn 0 0 0
IV.PZZT.HHZ. 2009-04-07T08:01:35.50 10.0 undecidable manual Pn 0 0 0
IV.SEI.SHZ. 2009-04-07T08:01:34.63 10.0 undecidable manual Pn 0 0 0
IV.MOCO.HHE. 2009-04-07T08:01:32.34 10.0 undecidable manual Pn 0 0 0
IV.MSAG.HHZ. 2009-04-07T08:01:30.03 10.0 undecidable manual Pn 0 0 0
IV.CSSN.SHZ. 2009-04-07T08:01:30.84 10.0 undecidable manual Pn 0 0 0
IV.VMG.SHZ. 2009-04-07T08:01:29.36 10.0 undecidable manual Pn 0 0 0
IV.MELA.HHN. 2009-04-07T08:01:28.29 10.0 undecidable manual Pn 0 0 0
IV.MCRV.HHZ. 2009-04-07T08:01:28.72 10.0 undecidable manual Pn 0 0 0
IV.FG5.SHZ. 2009-04-07T08:01:27.04 10.0 undecidable manual Pn 0 0 0
IV.GRFL.SHZ. 2009-04-07T08:01:26.23 10.0 undecidable manual Pn 0 0 0
IV.ASQU.HHZ. 2009-04-07T08:01:26.04 10.0 undecidable manual Pn 0 0 0
IV.SGRT.HHZ. 2009-04-07T08:01:26.96 10.0 undecidable manual Pn 0 0 0
IV.CASP.HHZ. 2009-04-07T08:01:25.35 10.0 undecidable manual Pn 0 0 0
IV.RSM.SHZ. 2009-04-07T08:01:24.95 10.0 undecidable manual Pn 0 0 0
IV.PESA.HHZ. 2009-04-07T08:01:23.55 10.0 undecidable manual Pn 0 0 0
IV.MAON.HHZ. 2009-04-07T08:01:21.98 10.0 undecidable manual Pn 0 0 0
IV.PARC.HHZ. 2009-04-07T08:01:21.29 10.0 undecidable manual Pn 0 0 0
IV.SACR.HHZ. 2009-04-07T08:01:21.89 10.0 undecidable manual Pn 0 0 0
IV.SENI.EHN. 2009-04-07T08:01:21.36 10.0 undecidable manual Pn 0 0 0
IV.ARCI.HHZ. 2009-04-07T08:01:20.61 10.0 undecidable manual Pn 0 0 0
IV.CAFI.HHE. 2009-04-07T08:01:20.11 10.0 undecidable manual Pn 0 0 0
IV.FG2.SHZ. 2009-04-07T08:01:20.65 10.0 undecidable manual Pn 0 0 0
IV.PTRJ.HHZ. 2009-04-07T08:01:18.44 10.0 undecidable manual Pn 0 0 0
IV.MSC.EHZ. 2009-04-07T08:01:18.47 10.0 undecidable manual Pn 0 0 0
IV.SGG.HHZ. 2009-04-07T08:01:17.25 10.0 undecidable manual Pn 0 0 0
IV.FSSB.HHZ. 2009-04-07T08:01:17.87 10.0 undecidable manual Pn 0 0 0
IV.MODR.HHZ. 2009-04-07T08:01:17.82 10.0 undecidable manual Pn 0 0 0
IV.BSSO.HHZ. 2009-04-07T08:01:16.60 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHZ. 2009-04-07T08:01:16.50 10.0 undecidable manual Pg 0 0 0
IV.RFI.SHZ. 2009-04-07T08:01:16.78 10.0 undecidable manual Pn 0 0 0
IV.VAGA.HHZ. 2009-04-07T08:01:15.27 10.0 undecidable manual Pg 0 0 0
IV.LATE.HHZ. 2009-04-07T08:01:15.71 10.0 undecidable manual Pg 0 0 0
IV.AOI.HHZ. 2009-04-07T08:01:14.52 10.0 undecidable manual Pg 0 0 0
IV.TOLF.HHZ. 2009-04-07T08:01:13.85 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHZ. 2009-04-07T08:01:13.09 1.0 undecidable manual Sg 234 67.0773 0.198 22
IV.MGAB.HHZ. 2009-04-07T08:01:13.77 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHN. 2009-04-07T08:01:13.92 0.1 undecidable manual Pg 343 129.0708 0.111 77
IV.MURB.HHZ. 2009-04-07T08:01:12.78 0.3 undecidable manual Pg 324 120.6903 0.261 57
IV.MNS.HHZ. 2009-04-07T08:01:11.11 0.1 undecidable manual Sg 270 58.7967 0.439 83
IV.INTR.HHZ. 2009-04-07T08:01:11.11 0.6 undecidable manual Sg 135 58.5969 0.483 41
IV.FRES.HHE. 2009-04-07T08:01:11.92 0.3 undecidable manual Pg 113 113.997 0.446 56
IV.VVLD.HHZ. 2009-04-07T08:01:11.55 0.6 undecidable manual Sg 162 59.8956 0.575 40
IV.ROM9.HHZ. 2009-04-07T08:01:10.46 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHZ. 2009-04-07T08:01:10.56 0.3 undecidable manual Sg 216 59.0964 -0.198 65
IV.RNI2.HHZ. 2009-04-07T08:01:10.31 10.0 undecidable manual Pg 0 0 0
IV.CING.HHN. 2009-04-07T08:01:10.67 0.1 undecidable manual Pg 352 111.2997 -0.397 76
IV.MIDA.HHZ. 2009-04-07T08:01:10.30 0.6 undecidable manual Pg 139 108.3138 -0.31 39
IV.SNTG.SHZ. 2009-04-07T08:01:09.54 0.1 undecidable manual Pg 339 103.6185 -0.345 78
IV.CERA.HHE. 2009-04-07T08:01:09.28 0.3 undecidable manual Pg 149 101.0211 -0.204 60
IV.MA9.HHZ. 2009-04-07T08:01:08.71 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHZ. 2009-04-07T08:01:08.40 0.1 undecidable manual Pg 321 94.7385 -0.121 83
IV.RDP.BHN. 2009-04-07T08:01:08.65 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHE. 2009-04-07T08:01:08.36 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHZ. 2009-04-07T08:01:08.50 0.6 undecidable manual Pg 187 92.241 0.364 40
IV.RMP.HHZ. 2009-04-07T08:01:07.26 10.0 undecidable manual Pg 0 0 0
IV.LAV9.SHZ. 2009-04-07T08:01:07.46 10.0 undecidable manual Pg 0 0 0
IV.SGTA.HHZ. 2009-04-07T08:01:06.40 10.0 undecidable manual Sg 0 0 0
IV.PTQR.SHZ. 2009-04-07T08:01:06.71 1.0 undecidable manual Sg 180 40.0266 0.992 17
IV.SDI.SHZ. 2009-04-07T08:01:06.35 0.3 undecidable manual Pg 155 82.0512 -0.214 62
IV.CAFR.HHZ. 2009-04-07T08:01:06.41 0.3 undecidable manual Pg 102 79.7646 0.201 63
IV.POFI.HHN. 2009-04-07T08:01:05.79 0.6 undecidable manual Pg 161 78.2661 -0.19 42
IV.VCEL.EHZ. 2009-04-07T08:01:05.21 0.3 undecidable manual Sg 88 36.2415 0.492 64
IV.TRTR.HHZ. 2009-04-07T08:01:04.35 0.3 undecidable manual Pg 42 63.1923 0.683 57
IV.OFFI.HHZ. 2009-04-07T08:01:04.43 0.1 positive manual Pg 21 65.5899 0.402 83
IV.MTCE.HHZ. 2009-04-07T08:01:04.12 0.1 positive manual Pg 234 67.0773 -0.146 87
IV.GUAR.HHZ. 2009-04-07T08:01:03.70 0.3 undecidable manual Pg 186 65.6898 -0.348 62
IV.MNS.HHZ. 2009-04-07T08:01:03.06 0.1 positive manual Pg 270 58.7967 0.078 90
IV.TERO.HHE. 2009-04-07T08:01:03.13 0.1 undecidable manual Sg 32 31.4463 -0.327 90
IV.SACS.HHN. 2009-04-07T08:01:03.16 10.0 undecidable manual Pg 0 0 0
IV.VVLD.HHZ. 2009-04-07T08:01:02.88 0.6 undecidable manual Pg 162 59.8956 -0.278 43
IV.FIAM.HHN. 2009-04-07T08:01:02.18 0.1 undecidable manual Sg 241 26.3514 0.046 95
IV.INTR.HHZ. 2009-04-07T08:01:02.73 0.3 undecidable manual Pg 135 58.5969 -0.227 65
IV.CERT.HHZ. 2009-04-07T08:01:02.79 0.1 positive manual Pg 216 59.0964 -0.245 86
.FAGN.---. 2009-04-07T08:01:00.22 0.6 undecidable manual Sg 130 20.0688 -0.334 46
IV.VCEL.EHZ. 2009-04-07T08:00:59.56 0.1 positive manual Pg 88 36.2415 0.014 95
IV.PTQR.SHZ. 2009-04-07T08:00:59.92 0.1 positive manual Pg 180 40.0266 -0.204 90
.CAMP.---. 2009-04-07T08:00:59.94 0.1 undecidable manual Sg 3 16.9719 0.119 95
IV.FIAM.HHN. 2009-04-07T08:00:58.10 0.1 positive manual Pg 241 26.3514 0.046 96
IV.TERO.HHE. 2009-04-07T08:00:58.52 0.1 positive manual Pg 32 31.4463 -0.299 90
.FAGN.---. 2009-04-07T08:00:57.19 0.1 negative manual Pg 130 20.0688 0.047 97
MN.AQU.HHZ. 2009-04-07T08:00:57.46 0.1 undecidable manual Sg 174 3.2967 -0.084 100
.CAMP.---. 2009-04-07T08:00:56.75 0.1 positive manual Pg 3 16.9719 0.032 97
MN.AQU.HHZ. 2009-04-07T08:00:55.43 0.1 positive manual Pg 174 3.2967 0.025 99
IV.PTS.SHZ. 2009-04-07T08:00:04.28 10.0 undecidable manual Pg 0 0 0
IV.ORI.EHZ. 2009-04-07T08:00:02.79 10.0 undecidable manual Pg 0 0 0
IV.SGTA.HHZ. 2009-04-07T07:59:59.56 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
Waveforms Seismic signals in miniseed + resp format Download