Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 12-04-2009 and time 11:25:50 (Italy) in region 6 km NW L'Aquila (AQ)

A magnitude ML 2.0 earthquake occured in region: 6 km NW L'Aquila (AQ), on

  • 12-04-2009 09:25:50 (UTC)
  • 12-04-2009 11:25:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4010, 13.3590 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.

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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 6 69753 69753
Pizzoli AQ 7 4326 74079
Barete AQ 9 737 74816
Scoppito AQ 9 3727 78543
Lucoli AQ 12 1011 79554
Cagnano Amiterno AQ 13 1369 80923
Tornimparte AQ 13 3187 84110
Capitignano AQ 14 665 84775
Ocre AQ 16 1167 85942
Fossa AQ 16 721 86663
Montereale AQ 17 2581 89244
Poggio Picenze AQ 18 1136 90380
Campotosto AQ 18 542 90922
Sant'Eusanio Forconese AQ 18 394 91316
Crognaleto TE 19 1297 92613

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km NW of L'Aquila (69753 inhabitants)
40 Km SW of Teramo (54892 inhabitants)
61 Km E of Terni (111501 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
67 Km W of Chieti (51815 inhabitants)
67 Km NE of Tivoli (56533 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km W of Pescara (121014 inhabitants)
82 Km SE of Foligno (57155 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
93 Km NE of Velletri (53303 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 2.0 		2009-04-12
09:25:50		 42.401 13.359 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 794599
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-12 09:25:50 ± 0.07
Latitude 42.4010 ± 0.0045
Longitude 13.3590 ± 0.0061
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 794599

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 413
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 707.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.82198
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 794599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:02:59

Md:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 794599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:02:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SEI.SHZ. 2009-04-12T09:26:25.95 10.0 undecidable manual Pg 0 0 0
IV.CING.HHZ. 2009-04-12T09:26:24.87 10.0 undecidable manual Sg 0 0 0
IV.MGAB.HHE. 2009-04-12T09:26:21.17 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-04-12T09:26:19.03 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2009-04-12T09:26:17.68 10.0 undecidable manual Pg 0 0 0
IV.LPEL.HHZ. 2009-04-12T09:26:15.48 0.6 undecidable manual Sg 120 78.366 0.991 33
IV.CING.HHZ. 2009-04-12T09:26:15.38 10.0 undecidable manual Pg 0 0 0
IV.ZCCA.HHN. 2009-04-12T09:26:15.72 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHN. 2009-04-12T09:26:12.23 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHZ. 2009-04-12T09:26:12.77 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHE. 2009-04-12T09:26:10.13 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2009-04-12T09:26:09.83 0.6 undecidable manual Sg 212 58.8966 0.511 42
IV.SNTG.SHZ. 2009-04-12T09:26:09.14 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-04-12T09:26:07.13 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHN. 2009-04-12T09:26:07.58 0.3 undecidable manual Sg 338 52.0035 0.123 70
IV.MNS.HHE. 2009-04-12T09:26:06.65 10.0 undecidable manual Sg 0 0 0
IV.ASSB.HHE. 2009-04-12T09:26:06.61 0.6 undecidable manual Pg 322 91.242 0.168 43
IV.CESI.HHN. 2009-04-12T09:26:04.33 0.3 undecidable manual Pg 331 76.5678 0.148 66
IV.VCEL.EHZ. 2009-04-12T09:26:04.74 1.0 undecidable manual Sg 91 39.5271 0.61 21
IV.LPEL.HHZ. 2009-04-12T09:26:04.41 0.3 undecidable manual Pg 120 78.366 -0.045 67
IV.VVLD.HHZ. 2009-04-12T09:26:04.90 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHE. 2009-04-12T09:26:03.03 0.3 undecidable manual Pg 183 67.377 0.26 66
IV.LNSS.HHZ. 2009-04-12T09:26:03.02 0.3 undecidable manual Sg 311 34.3434 0.27 70
IV.FDMO.HHZ. 2009-04-12T09:26:03.65 0.1 undecidable manual Pg 343 73.8705 -0.123 89
IV.OFFI.HHZ. 2009-04-12T09:26:03.21 0.3 undecidable manual Pg 24 64.9905 0.813 55
IV.MNS.HHE. 2009-04-12T09:26:02.90 10.0 undecidable manual Pg 0 0 0
IV.TERO.HHZ. 2009-04-12T09:26:01.36 0.3 undecidable manual Sg 39 31.746 -0.7 62
IV.CERT.HHN. 2009-04-12T09:26:01.22 0.1 undecidable manual Pg 212 58.8966 -0.249 89
IV.INTR.HHZ. 2009-04-12T09:26:01.66 0.1 undecidable manual Pg 134 62.2932 -0.325 87
IV.NRCA.HHN. 2009-04-12T09:26:00.23 0.1 undecidable manual Pg 338 52.0035 -0.163 92
IV.FAGN.HHZ. 2009-04-12T09:25:59.54 0.3 undecidable manual Sg 129 23.754 -0.081 74
IV.FIAM.HHZ. 2009-04-12T09:25:59.42 0.6 undecidable manual Sg 233 24.6531 -0.485 45
IV.PTQR.SHZ. 2009-04-12T09:25:58.61 0.1 undecidable manual Pg 175 42.2244 -0.279 91
IV.VCEL.EHZ. 2009-04-12T09:25:58.45 0.1 undecidable manual Pg 91 39.5271 -0.023 97
IV.CAMP.HHZ. 2009-04-12T09:25:57.12 0.3 undecidable manual Sg 15 15.4734 0.09 75
IV.LNSS.HHZ. 2009-04-12T09:25:57.61 0.1 undecidable manual Pg 311 34.3434 -0.067 97
IV.FIAM.HHZ. 2009-04-12T09:25:56.10 0.1 undecidable manual Pg 233 24.6531 0.066 99
IV.TERO.HHZ. 2009-04-12T09:25:56.77 0.1 undecidable manual Pg 39 31.746 -0.508 89
IV.FAGN.HHZ. 2009-04-12T09:25:56.07 0.1 undecidable manual Pg 129 23.754 0.201 96
MN.AQU.HHZ. 2009-04-12T09:25:54.56 0.3 undecidable manual Sg 146 6.2937 -0.106 76
IV.CAMP.HHZ. 2009-04-12T09:25:54.52 0.1 undecidable manual Pg 15 15.4734 0.145 99
MN.AQU.HHZ. 2009-04-12T09:25:53.16 0.1 undecidable manual Pg 146 6.2937 0.151 100
IV.CARO.HHZ. 2009-04-12T09:25:44.56 10.0 undecidable manual Pg 0 0 0
IV.PIPA.HHZ. 2009-04-12T09:25:42.04 10.0 undecidable manual Pg 0 0 0
IV.GRI.EHZ. 2009-04-12T09:25:40.79 10.0 undecidable manual Pg 0 0 0
MN.TIP.HHZ. 2009-04-12T09:25:36.31 10.0 undecidable manual Pg 0 0 0
IV.SERS.HHZ. 2009-04-12T09:25:35.47 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