Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 28-03-2009 and time 02:42:41 (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 01:42:41 (UTC)
  • 28-03-2009 02:42:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3490, 13.3770 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.

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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 2 69753 69753
Lucoli AQ 7 1011 70764
Tornimparte AQ 9 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 14 1136 86159
Rocca di Cambio AQ 16 533 86692
Villa Sant'Angelo AQ 16 424 87116
San Demetrio ne' Vestini AQ 16 1854 88970
Cagnano Amiterno AQ 18 1369 90339
Barisciano AQ 18 1828 92167
Fagnano Alto AQ 19 418 92585
Rocca di Mezzo AQ 20 1526 94111

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km W of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
64 Km E of Terni (111501 inhabitants)
65 Km W of Chieti (51815 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km W of Pescara (121014 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
89 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 2.5
ML 2.4 		2009-03-28
01:42:41		 42.349 13.377 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 752509
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-03-28 01:42:41 ± 0.07
Latitude 42.3490 ± 0.0036
Longitude 13.3770 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 752509

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 547
Semi-minor axis of confidence ellipse (meter) 399
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 290
Circular confidence region, given by single value of horizontal uncertainty (meter) 721.1
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 42
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.74194
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 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 752509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:13:42

Md:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 752509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:13:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHE. 2009-03-28T01:43:12.82 10.0 undecidable manual Sg 0 0 0
IV.PIEI.HHE. 2009-03-28T01:43:11.15 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2009-03-28T01:43:09.73 10.0 undecidable manual Pg 0 0 0
IV.RNI2.HHE. 2009-03-28T01:43:09.50 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHE. 2009-03-28T01:43:08.60 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHZ. 2009-03-28T01:43:08.35 10.0 undecidable manual Pg 0 0 0
IV.MA9.HHN. 2009-03-28T01:43:04.78 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHE. 2009-03-28T01:43:04.53 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-03-28T01:43:01.61 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHZ. 2009-03-28T01:43:00.34 0.6 undecidable manual Sg 131 57.2982 0.585 42
IV.NRCA.SHZ. 2009-03-28T01:43:00.59 0.6 undecidable manual Sg 338 57.8976 0.669 40
IV.GIUL.HHE. 2009-03-28T01:42:59.70 10.0 undecidable manual Pg 0 0 0
IV.VVLD.HHZ. 2009-03-28T01:42:59.50 0.6 undecidable manual Sg 159 56.8986 -0.144 46
IV.CESI.HHN. 2009-03-28T01:42:56.29 0.3 undecidable manual Pg 332 82.3509 0.237 65
IV.RMP.HHZ. 2009-03-28T01:42:56.83 10.0 undecidable manual Pg 0 0 0
IV.VCEL.EHZ. 2009-03-28T01:42:55.12 0.6 undecidable manual Sg 82 38.3283 0.414 45
IV.SDI.SHZ. 2009-03-28T01:42:55.39 0.3 undecidable manual Pg 153 79.365 -0.201 66
IV.POFI.HHN. 2009-03-28T01:42:55.24 0.6 undecidable manual Pg 158 75.2691 0.28 44
IV.FDMO.HHZ. 2009-03-28T01:42:55.60 0.3 undecidable manual Pg 343 79.8645 -0.07 67
IV.OFFI.HHE. 2009-03-28T01:42:55.19 0.3 undecidable manual Pg 21 69.7746 1.076 49
IV.LPEL.HHN. 2009-03-28T01:42:54.72 0.3 undecidable manual Pg 117 74.2701 -0.085 68
IV.MTCE.HHZ. 2009-03-28T01:42:53.03 0.1 undecidable manual Pg 235 63.3921 -0.107 92
IV.TERO.HHZ. 2009-03-28T01:42:53.23 0.3 undecidable manual Sg 31 35.6421 -0.752 60
IV.NOVE.EHE. 2009-03-28T01:42:53.24 10.0 undecidable manual Pg 0 0 0
IV.PTQR.SHZ. 2009-03-28T01:42:53.92 0.6 undecidable manual Sg 177 36.2415 -0.228 47
IV.GUAR.HHN. 2009-03-28T01:42:53.21 0.3 undecidable manual Pg 185 61.6938 0.343 66
IV.NRCA.SHZ. 2009-03-28T01:42:52.10 0.1 undecidable manual Pg 338 57.8976 -0.185 92
IV.INTR.HHZ. 2009-03-28T01:42:52.20 0.1 undecidable manual Pg 131 57.2982 0.011 95
IV.MNS.HHE. 2009-03-28T01:42:52.06 0.1 undecidable manual Pg 274 57.0984 -0.107 93
IV.FAEN.HHE. 2009-03-28T01:42:52.20 10.0 undecidable manual Pg 0 0 0
IV.VVLD.HHZ. 2009-03-28T01:42:51.79 0.1 undecidable manual Pg 159 56.8986 -0.335 89
IV.CERT.HHZ. 2009-03-28T01:42:51.76 0.1 undecidable manual Pg 216 54.9006 -0.067 94
IV.FIAM.HHZ. 2009-03-28T01:42:50.61 0.3 undecidable manual Sg 247 23.0547 -0.012 76
IV.CAMP.HHZ. 2009-03-28T01:42:49.77 0.1 undecidable manual Sg 7 20.9679 -0.196 98
IV.VCEL.EHZ. 2009-03-28T01:42:49.37 0.1 undecidable manual Pg 82 38.3283 0.096 97
IV.PTQR.SHZ. 2009-03-28T01:42:48.84 0.1 undecidable manual Pg 177 36.2415 -0.112 97
IV.TERO.HHZ. 2009-03-28T01:42:48.55 0.1 undecidable manual Pg 31 35.6421 -0.306 93
IV.FIAM.HHZ. 2009-03-28T01:42:47.09 0.1 undecidable manual Pg 247 23.0547 0.174 98
IV.CAMP.HHZ. 2009-03-28T01:42:46.65 0.1 undecidable manual Pg 7 20.9679 0.113 99
MN.AQU.HHZ. 2009-03-28T01:42:45.36 0.3 undecidable manual Sg 74 2.1978 -0.177 77
MN.AQU.HHZ. 2009-03-28T01:42:44.20 0.1 undecidable manual Pg 74 2.1978 0.22 100
IV.FIU.EHZ. 2009-03-28T01:42:32.86 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