Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 28-03-2009 and time 21:31:22 (Italy) in region 2 km W L'Aquila (AQ)

A magnitude ML 2.4 earthquake occured in region: 2 km W L'Aquila (AQ), on

  • 28-03-2009 20:31:22 (UTC)
  • 28-03-2009 21:31:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3470, 13.3700 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 7 1011 70764
Tornimparte AQ 8 3187 73951
Scoppito AQ 10 3727 77678
Ocre AQ 11 1167 78845
Fossa AQ 11 721 79566
Pizzoli AQ 12 4326 83892
Barete AQ 14 737 84629
Sant'Eusanio Forconese AQ 14 394 85023
Poggio Picenze AQ 15 1136 86159
Rocca di Cambio AQ 16 533 86692
Villa Sant'Angelo AQ 16 424 87116
San Demetrio ne' Vestini AQ 17 1854 88970
Cagnano Amiterno AQ 17 1369 90339
Barisciano AQ 18 1828 92167
Rocca di Mezzo AQ 20 1526 93693
Fagnano Alto AQ 20 418 94111

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km W of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
64 Km E of Terni (111501 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
66 Km W of Chieti (51815 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
71 Km W of Pescara (121014 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
88 Km NE of Velletri (53303 inhabitants)
89 Km NE of Roma (2864731 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 		Md 2.4
ML 2.4 		2009-03-28
20:31:22		 42.347 13.37 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 752619
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-03-28 20:31:22 ± 0.06
Latitude 42.3470 ± 0.0036
Longitude 13.3700 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 752619

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 375
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.74104
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 752619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:13:49

Md:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 752619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:13:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHE. 2009-03-28T20:31:52.50 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2009-03-28T20:31:51.22 10.0 undecidable manual Pg 0 0 0
IV.BADI.EHE. 2009-03-28T20:31:51.90 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-03-28T20:31:51.61 10.0 undecidable manual Sg 0 0 0
IV.GUMA.HHZ. 2009-03-28T20:31:50.04 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-03-28T20:31:45.97 10.0 undecidable manual Pg 0 0 0
IV.CRAC.EHZ. 2009-03-28T20:31:43.29 10.0 undecidable manual Pg 0 0 0
IV.RMP.HHZ. 2009-03-28T20:31:41.79 10.0 undecidable manual Sg 0 0 0
IV.INTR.HHZ. 2009-03-28T20:31:41.43 0.6 undecidable manual Sg 130 57.5979 0.577 41
IV.SNTG.SHZ. 2009-03-28T20:31:41.38 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHN. 2009-03-28T20:31:41.22 0.6 undecidable manual Sg 339 57.8976 0.275 45
IV.POFI.HHN. 2009-03-28T20:31:41.24 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHE. 2009-03-28T20:31:41.45 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2009-03-28T20:31:39.14 0.6 undecidable manual Sg 216 54.501 -0.895 36
IV.RMP.HHZ. 2009-03-28T20:31:37.97 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHE. 2009-03-28T20:31:37.33 0.3 undecidable manual Pg 333 82.251 0.265 64
IV.FDMO.HHN. 2009-03-28T20:31:36.65 0.3 undecidable manual Pg 343 79.8645 -0.048 67
IV.VCEL.EHN. 2009-03-28T20:31:36.29 0.6 undecidable manual Sg 82 38.9277 0.416 45
IV.SDI.SHZ. 2009-03-28T20:31:36.53 0.1 undecidable manual Pg 153 79.4649 -0.092 89
IV.OFFI.HHN. 2009-03-28T20:31:36.25 0.3 undecidable manual Pg 21 70.1742 1.06 49
IV.LPEL.HHZ. 2009-03-28T20:31:35.72 0.1 undecidable manual Pg 116 74.6697 -0.165 89
IV.MTCE.HHZ. 2009-03-28T20:31:34.10 0.1 undecidable manual Pg 235 62.8926 0.023 93
IV.PTQR.SHZ. 2009-03-28T20:31:34.79 0.6 undecidable manual Sg 176 36.1416 -0.346 46
IV.GUAR.HHE. 2009-03-28T20:31:34.11 0.3 undecidable manual Pg 184 61.494 0.255 67
IV.TERO.HHN. 2009-03-28T20:31:34.29 0.6 undecidable manual Sg 32 36.0417 -0.832 39
IV.MNS.HHZ. 2009-03-28T20:31:33.04 0.1 undecidable manual Pg 275 56.6988 -0.075 93
IV.INTR.HHZ. 2009-03-28T20:31:33.20 0.1 undecidable manual Pg 130 57.5979 -0.049 94
IV.NRCA.HHN. 2009-03-28T20:31:33.31 0.1 undecidable manual Pg 339 57.8976 0.008 94
IV.VVLD.HHE. 2009-03-28T20:31:33.12 0.3 undecidable manual Pg 158 56.8986 -0.031 71
IV.CERT.HHN. 2009-03-28T20:31:32.75 0.1 undecidable manual Pg 216 54.501 -0.03 95
IV.FIAM.HHZ. 2009-03-28T20:31:31.57 0.6 undecidable manual Sg 247 22.5552 0.099 49
IV.FAGN.HHZ. 2009-03-28T20:31:30.54 0.3 undecidable manual Sg 117 19.6692 -0.043 75
IV.CAMP.HHN. 2009-03-28T20:31:30.77 0.1 undecidable manual Sg 9 21.1677 -0.274 95
IV.VCEL.EHN. 2009-03-28T20:31:30.50 0.1 undecidable manual Pg 82 38.9277 0.124 95
IV.TERO.HHN. 2009-03-28T20:31:29.53 0.1 undecidable manual Pg 32 36.0417 -0.411 90
IV.PTQR.SHZ. 2009-03-28T20:31:29.88 0.1 undecidable manual Pg 176 36.1416 -0.068 97
IV.FIAM.HHZ. 2009-03-28T20:31:28.08 0.1 undecidable manual Pg 247 22.5552 0.243 96
IV.FAGN.HHZ. 2009-03-28T20:31:27.39 0.1 undecidable manual Pg 117 19.6692 0.069 100
IV.CAMP.HHN. 2009-03-28T20:31:27.64 0.1 undecidable manual Pg 9 21.1677 0.05 100
MN.AQU.HHZ. 2009-03-28T20:31:26.36 0.1 undecidable manual Sg 73 2.6973 -0.213 100
MN.AQU.HHZ. 2009-03-28T20:31:25.22 0.1 undecidable manual Pg 73 2.6973 0.212 100
IV.RDP.BHZ. 2009-03-28T20:31:23.71 10.0 undecidable manual Pg 0 0 0
IV.CDCA.EHE. 2009-03-28T20:31:07.55 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHZ. 2009-03-28T20:31:07.23 10.0 undecidable manual Pg 0 0 0
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