Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 15-04-2009 and time 20:01:46 (UTC) in region 2 km NW L'Aquila (AQ)

A magnitude ML 2.0 earthquake occured in region: 2 km NW L'Aquila (AQ), on

  • 15-04-2009 20:01:46 (UTC)
  • 15-04-2009 22:01:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3640, 13.3820 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 9 1011 70764
Scoppito AQ 10 3727 74491
Tornimparte AQ 10 3187 77678
Pizzoli AQ 11 4326 82004
Ocre AQ 12 1167 83171
Fossa AQ 12 721 83892
Barete AQ 13 737 84629
Poggio Picenze AQ 14 1136 85765
Sant'Eusanio Forconese AQ 14 394 86159
Villa Sant'Angelo AQ 17 424 86583
Rocca di Cambio AQ 17 533 87116
Cagnano Amiterno AQ 17 1369 88485
San Demetrio ne' Vestini AQ 17 1854 90339
Barisciano AQ 18 1828 92167
Capitignano AQ 19 665 92832

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km NW of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
64 Km E of Terni (111501 inhabitants)
65 Km W of Chieti (51815 inhabitants)
65 Km W of Montesilvano (53738 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
69 Km W of Pescara (121014 inhabitants)
86 Km SE of Foligno (57155 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
91 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 		ML 2.0 2009-04-15
20:01:46		 42.364 13.382 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 808399
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-15 20:01:46 ± 0.09
Latitude 42.3640 ± 0.0054
Longitude 13.3820 ± 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 808399

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 701
Semi-minor axis of confidence ellipse (meter) 607
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 848.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.86155
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 22
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 808399
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:19:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.STR4.BHE. 2009-04-15T20:02:28.36 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHE. 2009-04-15T20:02:26.65 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHE. 2009-04-15T20:02:24.96 10.0 undecidable manual Sg 0 0 0
IV.CERA.HHE. 2009-04-15T20:02:21.95 10.0 undecidable manual Pg 0 0 0
IV.CING.HHZ. 2009-04-15T20:02:21.62 10.0 undecidable manual Sg 0 0 0
IV.MIDA.HHE. 2009-04-15T20:02:20.67 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHE. 2009-04-15T20:02:16.61 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2009-04-15T20:02:15.18 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHN. 2009-04-15T20:02:13.44 10.0 undecidable manual Pg 0 0 0
IV.POFI.HHE. 2009-04-15T20:02:11.97 10.0 undecidable manual Pg 0 0 0
IV.CING.HHZ. 2009-04-15T20:02:10.31 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHE. 2009-04-15T20:02:08.44 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-15T20:02:06.61 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHZ. 2009-04-15T20:02:05.35 0.6 undecidable manual Sg 132 58.0974 0.625 40
IV.GIUL.HHN. 2009-04-15T20:02:04.88 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHN. 2009-04-15T20:02:03.21 0.3 undecidable manual Pg 322 95.6376 0.441 59
IV.SDI.SHZ. 2009-04-15T20:02:00.79 0.1 undecidable manual Pg 154 80.7636 0.313 83
IV.FDMO.HHE. 2009-04-15T20:02:00.07 0.1 undecidable manual Pg 342 78.366 -0.042 88
IV.CESI.HHE. 2009-04-15T20:02:00.58 0.3 undecidable manual Pg 331 81.0522 0.053 66
IV.CESX.HHN. 2009-04-15T20:02:00.05 0.3 undecidable manual Pg 293 71.0733 1.062 48
IV.GUMA.HHZ. 2009-04-15T20:02:00.40 0.1 undecidable manual Pg 357 77.5668 0.405 82
IV.LPEL.HHN. 2009-04-15T20:01:59.39 0.3 undecidable manual Pg 118 74.6697 -0.152 65
IV.PTQR.SHZ. 2009-04-15T20:01:59.18 0.3 undecidable manual Sg 178 38.0286 -0.18 69
IV.VCEL.EHZ. 2009-04-15T20:01:59.79 0.1 undecidable manual Sg 85 37.7289 0.498 86
IV.OFFI.HHZ. 2009-04-15T20:01:59.45 0.3 undecidable manual Pg 21 67.9764 0.937 51
IV.GUAR.HHN. 2009-04-15T20:01:58.68 0.3 undecidable manual Pg 185 63.492 0.864 53
IV.TERO.HHZ. 2009-04-15T20:01:57.15 0.3 undecidable manual Sg 32 33.9438 -1.133 50
IV.VVLD.HHZ. 2009-04-15T20:01:56.57 0.3 undecidable manual Pg 160 58.2972 -0.457 63
IV.INTR.HHZ. 2009-04-15T20:01:56.69 0.1 undecidable manual Pg 132 58.0974 -0.303 87
IV.NRCA.HHE. 2009-04-15T20:01:56.57 0.1 undecidable manual Pg 337 56.499 -0.169 90
IV.MNS.HHZ. 2009-04-15T20:01:56.66 0.3 undecidable manual Pg 273 57.498 -0.239 66
IV.CERT.HHN. 2009-04-15T20:01:56.35 0.1 positive manual Pg 216 56.5989 -0.408 85
IV.FIAM.HHZ. 2009-04-15T20:01:55.36 0.3 undecidable manual Sg 244 24.1536 -0.088 72
IV.VCEL.EHZ. 2009-04-15T20:01:53.68 0.1 undecidable manual Pg 85 37.7289 -0.172 93
IV.LNSS.HHN. 2009-04-15T20:01:53.85 0.1 undecidable manual Pg 314 38.5281 -0.118 93
IV.CAMP.HHZ. 2009-04-15T20:01:53.67 0.3 undecidable manual Sg 7 19.1697 -0.181 72
IV.FAGN.HHN. 2009-04-15T20:01:53.96 0.3 undecidable manual Sg 123 19.869 -0.1 73
IV.PTQR.SHZ. 2009-04-15T20:01:53.50 0.1 positive manual Pg 178 38.0286 -0.392 88
IV.TERO.HHZ. 2009-04-15T20:01:52.61 0.3 undecidable manual Pg 32 33.9438 -0.66 61
IV.FAGN.HHN. 2009-04-15T20:01:51.00 0.1 undecidable manual Pg 123 19.869 0.167 96
IV.FIAM.HHZ. 2009-04-15T20:01:51.65 0.1 positive manual Pg 244 24.1536 0.015 98
MN.AQU.HHZ. 2009-04-15T20:01:50.04 0.6 undecidable manual Sg 125 1.998 0.231 49
IV.CAMP.HHZ. 2009-04-15T20:01:50.75 0.1 positive manual Pg 7 19.1697 0.038 98
MN.AQU.HHZ. 2009-04-15T20:01:48.28 0.1 positive manual Pg 125 1.998 -0.095 100
IV.HVZN.BHZ. 2009-04-15T20:01:40.15 10.0 undecidable manual Pg 0 0 0
IV.ORI.EHN. 2009-04-15T20:01:40.58 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