Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 09-04-2009 and time 14:35:58 (Italy) in region 6 km E L'Aquila (AQ)

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

  • 09-04-2009 12:35:58 (UTC)
  • 09-04-2009 14:35:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3530, 13.4740 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 6 69753 69753
Fossa AQ 7 721 70474
Poggio Picenze AQ 7 1136 71610
Ocre AQ 8 1167 72777
Sant'Eusanio Forconese AQ 8 394 73171
San Demetrio ne' Vestini AQ 10 1854 75025
Barisciano AQ 10 1828 76853
Villa Sant'Angelo AQ 11 424 77277
Rocca di Cambio AQ 13 533 77810
Lucoli AQ 13 1011 78821
Prata d'Ansidonia AQ 14 496 79317
Fagnano Alto AQ 14 418 79735
Santo Stefano di Sessanio AQ 14 111 79846
Tornimparte AQ 16 3187 83033
Rocca di Mezzo AQ 17 1526 84559
San Pio delle Camere AQ 17 661 85220
Fontecchio AQ 17 369 85589
Pizzoli AQ 17 4326 89915
Scoppito AQ 18 3727 93642
Carapelle Calvisio AQ 18 87 93729
Castelvecchio Calvisio AQ 18 153 93882
Calascio AQ 19 137 94019
Barete AQ 19 737 94756
Caporciano AQ 20 230 94986

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km E of L'Aquila (69753 inhabitants)
39 Km SW of Teramo (54892 inhabitants)
57 Km W of Chieti (51815 inhabitants)
58 Km W of Montesilvano (53738 inhabitants)
62 Km W of Pescara (121014 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
72 Km E of Terni (111501 inhabitants)
73 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km SE of Foligno (57155 inhabitants)
94 Km NE of Velletri (53303 inhabitants)
96 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 2.0 		2009-04-09
12:35:58		 42.353 13.474 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 780209
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-09 12:35:58 ± 0.08
Latitude 42.3530 ± 0.0054
Longitude 13.4740 ± 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 780209

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 609
Semi-minor axis of confidence ellipse (meter) 429
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
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) 61
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77432
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 780209
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:46:05

Md:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 780209
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:46:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNTG.SHZ. 2009-04-09T12:36:21.02 10.0 undecidable manual Pg 0 0 0
IV.LPEL.HHE. 2009-04-09T12:36:20.10 0.3 undecidable manual Sg 120 67.4769 0.527 61
IV.NRCA.HHN. 2009-04-09T12:36:18.48 0.6 undecidable manual Sg 331 60.7947 0.681 39
IV.FDMO.HHZ. 2009-04-09T12:36:17.38 10.0 undecidable manual Sg 0 0 0
IV.MIDA.HHZ. 2009-04-09T12:36:16.95 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHZ. 2009-04-09T12:36:15.81 0.3 undecidable manual Sg 137 51.9036 0.401 65
IV.FDMO.HHZ. 2009-04-09T12:36:14.68 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHN. 2009-04-09T12:36:13.74 0.3 undecidable manual Pg 327 85.9473 0.088 65
IV.LNSS.HHZ. 2009-04-09T12:36:12.91 0.6 undecidable manual Sg 308 45.0216 -0.66 40
IV.SDI.SHZ. 2009-04-09T12:36:12.03 0.6 undecidable manual Pg 159 76.5678 -0.18 43
IV.POFI.HHZ. 2009-04-09T12:36:11.55 0.1 undecidable manual Pg 164 73.1712 -0.143 87
IV.GUAR.HHE. 2009-04-09T12:36:11.08 0.3 undecidable manual Pg 192 63.3921 0.898 53
IV.LPEL.HHE. 2009-04-09T12:36:10.85 0.1 undecidable manual Pg 120 67.4769 0.04 90
IV.FIAM.HHZ. 2009-04-09T12:36:10.12 0.3 undecidable manual Sg 252 30.747 0.356 68
IV.VCEL.EHZ. 2009-04-09T12:36:10.08 0.1 undecidable manual Sg 81 30.4473 0.4 90
IV.TERO.HHZ. 2009-04-09T12:36:09.45 0.1 undecidable manual Sg 20 31.746 -0.585 85
IV.NRCA.HHN. 2009-04-09T12:36:09.67 0.1 undecidable manual Pg 331 60.7947 -0.114 90
IV.INTR.HHZ. 2009-04-09T12:36:08.21 0.1 undecidable manual Pg 137 51.9036 -0.194 90
IV.VVLD.HHZ. 2009-04-09T12:36:08.40 0.1 undecidable manual Pg 167 55.0005 -0.494 84
IV.CAMP.HHZ. 2009-04-09T12:36:07.40 0.1 undecidable manual Sg 345 20.9679 0.524 88
IV.LNSS.HHZ. 2009-04-09T12:36:07.24 0.1 undecidable manual Pg 308 45.0216 -0.106 93
IV.PTQR.SHZ. 2009-04-09T12:36:05.78 0.1 undecidable manual Pg 189 37.2294 -0.368 89
IV.FIAM.HHZ. 2009-04-09T12:36:05.05 0.1 undecidable manual Pg 252 30.747 -0.097 95
IV.VCEL.EHZ. 2009-04-09T12:36:05.32 0.1 undecidable manual Pg 81 30.4473 0.223 93
.T0109.EHE. 2009-04-09T12:36:04.63 0.6 undecidable manual Sg 274 11.1777 0.621 43
IV.TERO.HHZ. 2009-04-09T12:36:04.89 0.1 undecidable manual Pg 20 31.746 -0.412 89
IV.FAGN.HHN. 2009-04-09T12:36:04.17 0.6 undecidable manual Sg 137 13.2756 -0.407 46
IV.CAMP.HHZ. 2009-04-09T12:36:03.39 0.1 negative manual Pg 345 20.9679 -0.088 97
MN.AQU.HHZ. 2009-04-09T12:36:02.59 0.1 undecidable manual Sg 271 5.8941 -0.244 97
.T0109.EHE. 2009-04-09T12:36:02.06 0.1 undecidable manual Pg 274 11.1777 0.235 96
IV.FAGN.HHN. 2009-04-09T12:36:02.09 0.1 undecidable manual Pg 137 13.2756 -0.063 99
MN.AQU.HHZ. 2009-04-09T12:36:01.07 0.1 negative manual Pg 271 5.8941 -0.076 100
IV.CDCA.EHE. 2009-04-09T12:35:52.11 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