Earthquake with magnitude of ML 3.0 on date 06-04-2009 and time 06:08:45 (Italy) in region 4 km W L'Aquila (AQ)

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

  • 06-04-2009 04:08:45 (UTC)
  • 06-04-2009 06:08:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3700, 13.3560 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
Scoppito AQ 8 3727 73480
Lucoli AQ 9 1011 74491
Pizzoli AQ 9 4326 78817
Tornimparte AQ 10 3187 82004
Barete AQ 11 737 82741
Ocre AQ 14 1167 83908
Fossa AQ 14 721 84629
Cagnano Amiterno AQ 15 1369 85998
Poggio Picenze AQ 16 1136 87134
Sant'Eusanio Forconese AQ 17 394 87528
Capitignano AQ 17 665 88193
Rocca di Cambio AQ 18 533 88726
Villa Sant'Angelo AQ 19 424 89150
San Demetrio ne' Vestini AQ 19 1854 91004
Montereale AQ 20 2581 93585
Barisciano AQ 20 1828 95413

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km W of L'Aquila (69753 inhabitants)
43 Km SW of Teramo (54892 inhabitants)
62 Km E of Terni (111501 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
67 Km W of Chieti (51815 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
71 Km W of Pescara (121014 inhabitants)
84 Km SE of Foligno (57155 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
90 Km NE of Velletri (53303 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
ML 3.0 2009-04-06
04:08:45
42.37 13.356 9 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 756629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-06 04:08:45 ± 0.08
Latitude 42.3700 ± 0.0045
Longitude 13.3560 ± 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 756629

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 582
Semi-minor axis of confidence ellipse (meter) 213
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
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) 43
Number of associated phases, regardless of their use for origin computation 105
Number of defining phases 49
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) 1.88768
Number of stations at which the event was observed 86
Number of stations from which data was used for origin computation 37
Magnitude information

ML:3.0

Field Value
Value 3.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 756629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:18:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SI.RISI.BHE. 2009-04-06T04:10:00.61 10.0 undecidable manual Pn 0 0 0
SI.ROSI.BHZ. 2009-04-06T04:10:00.05 10.0 undecidable manual Pn 0 0 0
SI.ABSI.BHN. 2009-04-06T04:09:57.81 10.0 undecidable manual Pn 0 0 0
IV.APPI.EHZ. 2009-04-06T04:09:54.13 10.0 undecidable manual Pn 0 0 0
SI.KOSI.BHZ. 2009-04-06T04:09:53.20 10.0 undecidable manual Pn 0 0 0
NI.PALA.HHN. 2009-04-06T04:09:49.40 10.0 undecidable manual Pn 0 0 0
NI.VINO.HHZ. 2009-04-06T04:09:47.00 10.0 undecidable manual Pn 0 0 0
IV.CTI.EHZ. 2009-04-06T04:09:47.20 10.0 undecidable manual Pn 0 0 0
IV.SGRT.HHN. 2009-04-06T04:09:46.75 10.0 undecidable manual Pn 0 0 0
NI.POLC.HHZ. 2009-04-06T04:09:45.22 10.0 undecidable manual Pn 0 0 0
IV.ESLN.BHN. 2009-04-06T04:09:44.59 10.0 undecidable manual Pn 0 0 0
IV.PSB1.HHN. 2009-04-06T04:09:33.25 10.0 undecidable manual Pn 0 0 0
IV.POZ.EHZ. 2009-04-06T04:09:32.75 10.0 undecidable manual Pn 0 0 0
IV.MTRZ.HHZ. 2009-04-06T04:09:31.29 10.0 undecidable manual Pn 0 0 0
IV.BDI.HHZ. 2009-04-06T04:09:30.47 10.0 undecidable manual Pn 0 0 0
IV.PII.SHZ. 2009-04-06T04:09:30.21 10.0 undecidable manual Pn 0 0 0
GU.MAIM.HHE. 2009-04-06T04:09:30.89 10.0 undecidable manual Pn 0 0 0
IV.MCRV.HHN. 2009-04-06T04:09:27.05 10.0 undecidable manual Pn 0 0 0
IV.SEI.SHZ. 2009-04-06T04:09:26.00 10.0 undecidable manual Pn 0 0 0
IV.SGTA.HHZ. 2009-04-06T04:09:26.37 10.0 undecidable manual Pn 0 0 0
IV.CRMI.HHZ. 2009-04-06T04:09:26.31 10.0 undecidable manual Pn 0 0 0
IV.CRE.HHN. 2009-04-06T04:09:25.19 10.0 undecidable manual Pn 0 0 0
IV.FRES.HHZ. 2009-04-06T04:09:25.07 10.0 undecidable manual Sg 0 0 0
IV.VMG.SHZ. 2009-04-06T04:09:24.21 10.0 undecidable manual Pn 0 0 0
IV.CDCA.EHN. 2009-04-06T04:09:23.29 10.0 undecidable manual Sn 0 0 0
IV.SACR.HHN. 2009-04-06T04:09:20.62 10.0 undecidable manual Pn 0 0 0
IV.RNI2.HHZ. 2009-04-06T04:09:20.93 10.0 undecidable manual Sg 0 0 0
IV.CSNT.HHZ. 2009-04-06T04:09:20.43 10.0 undecidable manual Pn 0 0 0
IV.ASQU.HHZ. 2009-04-06T04:09:20.32 10.0 undecidable manual Pn 0 0 0
IV.SFI.EHE. 2009-04-06T04:09:19.36 0.6 undecidable manual Pn 325 209.5347 1.214 19
IV.RSM.SHZ. 2009-04-06T04:09:19.57 10.0 undecidable manual Pn 0 0 0
IV.GRFL.SHZ. 2009-04-06T04:09:19.47 10.0 undecidable manual Pn 0 0 0
IV.ROM9.HHZ. 2009-04-06T04:09:19.39 10.0 undecidable manual Sg 0 0 0
IV.PESA.HHZ. 2009-04-06T04:09:18.23 10.0 undecidable manual Pn 0 0 0
IV.TRIV.HHN. 2009-04-06T04:09:17.63 10.0 undecidable manual Sg 0 0 0
IV.CDCA.EHN. 2009-04-06T04:09:17.84 10.0 undecidable manual Pn 0 0 0
IV.SENI.EHE. 2009-04-06T04:09:17.85 10.0 undecidable manual Sn 0 0 0
IV.BSSO.HHE. 2009-04-06T04:09:16.56 10.0 undecidable manual Sn 0 0 0
IV.SENI.EHE. 2009-04-06T04:09:14.43 10.0 undecidable manual Pn 0 0 0
IV.MAON.HHZ. 2009-04-06T04:09:14.89 0.6 undecidable manual Pn 273 182.3841 0.118 32
IV.CAFI.HHZ. 2009-04-06T04:09:13.82 10.0 undecidable manual Pn 0 0 0
IV.BADI.EHN. 2009-04-06T04:09:13.09 10.0 undecidable manual Pn 0 0 0
IV.PTRJ.HHZ. 2009-04-06T04:09:13.73 10.0 undecidable manual Pn 0 0 0
IV.PARC.HHZ. 2009-04-06T04:09:13.86 0.6 undecidable manual Pn 328 168.3093 1.105 25
IV.ARCI.HHZ. 2009-04-06T04:09:13.41 0.6 undecidable manual Pn 290 162.5151 1.537 20
IV.SGG.HHZ. 2009-04-06T04:09:12.68 10.0 undecidable manual Pn 0 0 0
IV.BSSO.HHE. 2009-04-06T04:09:11.98 10.0 undecidable manual Pn 0 0 0
IV.TRIV.HHN. 2009-04-06T04:09:11.17 10.0 undecidable manual Pg 0 0 0
IV.VAGA.HHZ. 2009-04-06T04:09:11.63 10.0 undecidable manual Pn 0 0 0
IV.FSSB.SHZ. 2009-04-06T04:09:11.03 10.0 undecidable manual Pg 0 0 0
IV.RFI.SHZ. 2009-04-06T04:09:10.23 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHZ. 2009-04-06T04:09:10.01 0.6 undecidable manual Sg 333 79.4649 0.783 36
IV.MODR.HHZ. 2009-04-06T04:09:10.12 0.3 undecidable manual Pg 162 142.5462 1.335 37
IV.LPEL.HHE. 2009-04-06T04:09:09.62 0.6 undecidable manual Sg 118 76.8675 1.08 32
IV.LATE.HHZ. 2009-04-06T04:09:09.42 10.0 undecidable manual Pg 0 0 0
IV.FRES.HHZ. 2009-04-06T04:09:09.97 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHZ. 2009-04-06T04:09:09.69 0.3 undecidable manual Pg 333 145.4433 0.456 54
IV.AOI.HHN. 2009-04-06T04:09:08.81 10.0 undecidable manual Pg 0 0 0
IV.FDMO.HHZ. 2009-04-06T04:09:08.90 0.3 undecidable manual Sg 344 77.0673 0.303 64
IV.SACS.HHZ. 2009-04-06T04:09:08.05 0.6 undecidable manual Pg 295 129.4704 1.276 26
IV.ARVD.HHZ. 2009-04-06T04:09:06.87 0.3 undecidable manual Pg 345 129.5703 0.086 60
IV.TOLF.HHZ. 2009-04-06T04:09:06.63 10.0 undecidable manual Pg 0 0 0
IV.RNI2.HHZ. 2009-04-06T04:09:06.69 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2009-04-06T04:09:05.42 0.3 undecidable manual Pg 301 117.993 0.417 57
IV.MURB.HHN. 2009-04-06T04:09:05.51 0.3 undecidable manual Pg 326 119.8911 0.208 60
IV.INTR.HHN. 2009-04-06T04:09:04.48 0.6 undecidable manual Sg 131 60.0954 0.403 43
IV.ROM9.HHZ. 2009-04-06T04:09:03.70 10.0 undecidable manual Pg 0 0 0
IV.CING.HHN. 2009-04-06T04:09:03.98 0.3 undecidable manual Pg 353 112.2987 -0.141 61
IV.MIDA.HHZ. 2009-04-06T04:09:03.37 0.3 undecidable manual Pg 137 109.6125 -0.338 59
IV.CERT.HHZ. 2009-04-06T04:09:02.80 0.6 undecidable manual Sg 213 55.9995 -0.163 45
IV.CERA.HHZ. 2009-04-06T04:09:02.06 0.3 undecidable manual Pg 147 101.6205 -0.421 59
IV.NRCA.HHZ. 2009-04-06T04:09:02.32 0.3 undecidable manual Sg 339 55.0005 -0.396 65
IV.MA9.HHZ. 2009-04-06T04:09:02.72 10.0 undecidable manual Pg 0 0 0
IV.GAVE.SHZ. 2009-04-06T04:09:01.94 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHZ. 2009-04-06T04:09:00.69 0.3 undecidable manual Pg 185 90.4428 -0.073 65
IV.RDP.BHN. 2009-04-06T04:09:00.64 0.3 undecidable manual Pg 218 85.9473 0.578 58
IV.CAFR.HHE. 2009-04-06T04:09:00.13 0.3 undecidable manual Pg 101 82.8504 0.544 59
.SDI.---. 2009-04-06T04:08:59.41 0.1 undecidable manual Pg 153 82.251 -0.09 88
IV.RMP.HHZ. 2009-04-06T04:08:59.22 0.3 undecidable manual Pg 221 82.1511 -0.258 64
IV.POFI.HHZ. 2009-04-06T04:08:59.01 0.3 undecidable manual Pg 158 78.1662 0.148 66
IV.FDMO.HHZ. 2009-04-06T04:08:58.20 0.1 undecidable manual Pg 344 77.0673 -0.497 81
IV.LPEL.HHE. 2009-04-06T04:08:58.45 0.1 undecidable manual Pg 118 76.8675 -0.214 87
IV.CESI.HHZ. 2009-04-06T04:08:58.64 0.3 undecidable manual Pg 333 79.4649 -0.421 62
.PTQR.---. 2009-04-06T04:08:57.91 0.6 undecidable manual Sg 175 38.8278 -0.478 44
IV.OFFI.HHZ. 2009-04-06T04:08:57.85 0.3 undecidable manual Pg 23 68.1762 0.526 61
IV.TRTR.HHE. 2009-04-06T04:08:57.80 0.3 undecidable manual Pg 43 66.5778 0.72 57
IV.VVLD.HHZ. 2009-04-06T04:08:56.11 0.3 undecidable manual Pg 158 59.6958 0.085 69
IV.MTCE.HHZ. 2009-04-06T04:08:56.28 0.1 undecidable manual Pg 233 63.492 -0.325 87
IV.GUAR.HHZ. 2009-04-06T04:08:56.26 0.3 undecidable manual Pg 183 63.9915 -0.421 64
.TERO.---. 2009-04-06T04:08:56.19 0.6 undecidable manual Sg 36 34.5432 -1.06 35
IV.INTR.HHN. 2009-04-06T04:08:56.02 0.1 undecidable manual Pg 131 60.0954 -0.068 92
IV.CERT.HHZ. 2009-04-06T04:08:55.10 0.1 undecidable manual Pg 213 55.9995 -0.345 87
.FAGN.---. 2009-04-06T04:08:54.16 0.6 undecidable manual Sg 122 21.9669 0.702 42
IV.NRCA.HHZ. 2009-04-06T04:08:54.81 0.1 undecidable manual Pg 339 55.0005 -0.492 85
IV.FIAM.HHZ. 2009-04-06T04:08:53.60 0.1 undecidable manual Sg 240 22.6551 -0.07 98
.CAMP.---. 2009-04-06T04:08:52.18 0.3 undecidable manual Sg 13 18.87 -0.288 71
.PTQR.---. 2009-04-06T04:08:52.41 0.1 positive manual Pg 175 38.8278 -0.393 89
.VCEL.---. 2009-04-06T04:08:52.74 0.3 undecidable manual Pg 86 39.8268 -0.211 70
.TERO.---. 2009-04-06T04:08:51.42 0.1 positive manual Pg 36 34.5432 -0.726 80
IV.FIAM.HHZ. 2009-04-06T04:08:50.20 0.1 undecidable manual Pg 240 22.6551 0.122 97
.CAMP.---. 2009-04-06T04:08:49.33 0.1 positive manual Pg 13 18.87 -0.054 99
.FAGN.---. 2009-04-06T04:08:49.99 0.1 undecidable manual Pg 122 21.9669 0.034 99
.AQU.---. 2009-04-06T04:08:48.56 0.3 undecidable manual Sg 116 4.1958 -0.152 75
.AQU.---. 2009-04-06T04:08:47.36 0.1 negative manual Pg 116 4.1958 0.144 100
IV.STR3.BHE. 2009-04-06T04:08:42.06 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