Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 09-04-2009 and time 00:35:27 (Italy) in region 1 km NE Fossa (AQ)

A magnitude ML 2.3 earthquake occured in region: 1 km NE Fossa (AQ), on

  • 08-04-2009 22:35:27 (UTC)
  • 09-04-2009 00:35:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3010, 13.4940 at 17 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
Fossa AQ 1 721 721
Ocre AQ 2 1167 1888
Sant'Eusanio Forconese AQ 3 394 2282
Poggio Picenze AQ 5 1136 3418
Villa Sant'Angelo AQ 5 424 3842
San Demetrio ne' Vestini AQ 6 1854 5696
Rocca di Cambio AQ 7 533 6229
Fagnano Alto AQ 9 418 6647
Barisciano AQ 9 1828 8475
Prata d'Ansidonia AQ 10 496 8971
L'Aquila AQ 10 69753 78724
Rocca di Mezzo AQ 11 1526 80250
Fontecchio AQ 12 369 80619
Lucoli AQ 13 1011 81630
San Pio delle Camere AQ 13 661 82291
Santo Stefano di Sessanio AQ 14 111 82402
Carapelle Calvisio AQ 16 87 82489
Caporciano AQ 16 230 82719
Tione degli Abruzzi AQ 16 310 83029
Tornimparte AQ 16 3187 86216
Castelvecchio Calvisio AQ 16 153 86369
Calascio AQ 17 137 86506
Ovindoli AQ 19 1227 87733

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km SE of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
56 Km W of Chieti (51815 inhabitants)
59 Km W of Montesilvano (53738 inhabitants)
62 Km W of Pescara (121014 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
72 Km E of Guidonia Montecelio (88673 inhabitants)
75 Km E of Terni (111501 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
95 Km E of Roma (2864731 inhabitants)
97 Km SE of Foligno (57155 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 2.3 		2009-04-08
22:35:27		 42.301 13.494 17 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 776319
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-08 22:35:27 ± 0.08
Latitude 42.3010 ± 0.0036
Longitude 13.4940 ± 0.0085
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 776319

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 654
Semi-minor axis of confidence ellipse (meter) 188
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 806.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.82648
Number of stations at which the event was observed 45
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 776319
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:29

Md:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 776319
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHN. 2009-04-08T22:36:06.13 10.0 undecidable manual Sg 0 0 0
IV.GUMA.HHN. 2009-04-08T22:35:56.06 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2009-04-08T22:35:56.34 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2009-04-08T22:35:55.06 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2009-04-08T22:35:54.56 10.0 undecidable manual Sg 0 0 0
IV.PTRJ.HHE. 2009-04-08T22:35:53.91 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHZ. 2009-04-08T22:35:52.02 10.0 undecidable manual Pg 0 0 0
IV.SGG.HHZ. 2009-04-08T22:35:52.93 10.0 undecidable manual Pg 0 0 0
IV.MSC.EHZ. 2009-04-08T22:35:52.50 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2009-04-08T22:35:51.34 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-04-08T22:35:51.93 10.0 undecidable manual Pg 0 0 0
IV.CAFR.HHN. 2009-04-08T22:35:50.40 10.0 undecidable manual Pg 0 0 0
IV.VAGA.HHZ. 2009-04-08T22:35:50.52 10.0 undecidable manual Pg 0 0 0
IV.CING.HHN. 2009-04-08T22:35:50.52 10.0 undecidable manual Pg 0 0 0
IV.TOLF.HHN. 2009-04-08T22:35:48.93 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2009-04-08T22:35:47.45 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHZ. 2009-04-08T22:35:47.00 10.0 undecidable manual Pg 0 0 0
IV.RNI2.HHN. 2009-04-08T22:35:46.97 10.0 undecidable manual Pg 0 0 0
IV.PARC.HHN. 2009-04-08T22:35:46.09 10.0 undecidable manual Pg 0 0 0
IV.MA9.HHE. 2009-04-08T22:35:45.04 10.0 undecidable manual Pg 0 0 0
IV.MIDA.HHZ. 2009-04-08T22:35:45.11 10.0 undecidable manual Pg 0 0 0
IV.CERA.HHZ. 2009-04-08T22:35:44.68 10.0 undecidable manual Pg 0 0 0
IV.FDMO.HHZ. 2009-04-08T22:35:43.97 10.0 undecidable manual Pg 0 0 0
IV.LAV9.SHZ. 2009-04-08T22:35:43.84 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHZ. 2009-04-08T22:35:42.48 0.3 undecidable manual Pg 329 91.7415 -0.237 62
IV.GIUL.HHN. 2009-04-08T22:35:41.83 0.3 undecidable manual Pg 194 84.7485 0.184 63
IV.CESX.HHZ. 2009-04-08T22:35:41.68 0.6 undecidable manual Pg 295 82.3509 0.411 40
IV.INTR.HHZ. 2009-04-08T22:35:41.87 0.6 undecidable manual Sg 133 46.62 -0.275 45
IV.OFFI.HHZ. 2009-04-08T22:35:40.36 0.3 undecidable manual Pg 12 72.0723 0.668 56
IV.MTCE.HHZ. 2009-04-08T22:35:39.17 0.3 undecidable manual Pg 244 69.0753 -0.074 67
IV.SDI.SHZ. 2009-04-08T22:35:39.31 0.1 undecidable manual Pg 158 70.5738 -0.155 88
IV.TERO.HHZ. 2009-04-08T22:35:39.33 0.3 undecidable manual Sg 14 36.8298 -0.247 68
IV.MNS.HHZ. 2009-04-08T22:35:39.24 10.0 undecidable manual Pg 0 0 0
IV.PTQR.SHZ. 2009-04-08T22:35:38.59 0.3 undecidable manual Sg 194 31.9458 0.282 68
IV.POFI.HHN. 2009-04-08T22:35:38.68 0.3 undecidable manual Pg 164 67.1772 -0.269 65
IV.FIAM.HHZ. 2009-04-08T22:35:38.38 0.6 undecidable manual Sg 263 31.1466 0.262 46
IV.NRCA.HHZ. 2009-04-08T22:35:38.36 0.1 undecidable manual Pg 332 66.6777 -0.519 81
IV.VCEL.EHZ. 2009-04-08T22:35:38.94 0.6 undecidable manual Sg 70 30.2475 1.061 34
IV.GUAR.HHN. 2009-04-08T22:35:37.56 0.1 undecidable manual Pg 195 58.1973 -0.004 92
IV.CAMP.HHZ. 2009-04-08T22:35:37.13 0.3 undecidable manual Sg 345 26.9508 0.085 72
IV.CERT.HHE. 2009-04-08T22:35:37.37 0.1 undecidable manual Pg 227 57.498 -0.094 91
IV.VVLD.HHE. 2009-04-08T22:35:36.00 0.1 undecidable manual Pg 167 49.0176 -0.17 91
IV.LNSS.HHE. 2009-04-08T22:35:36.71 0.3 undecidable manual Pg 312 50.0166 0.39 65
IV.INTR.HHZ. 2009-04-08T22:35:35.41 0.1 undecidable manual Pg 133 46.62 -0.392 88
IV.T0104.EHZ. 2009-04-08T22:35:34.30 0.3 undecidable manual Sg 297 14.3745 0.184 73
IV.TERO.HHZ. 2009-04-08T22:35:34.07 0.1 undecidable manual Pg 14 36.8298 -0.246 91
IV.FIAM.HHZ. 2009-04-08T22:35:33.41 0.1 undecidable manual Pg 263 31.1466 -0.07 95
IV.VCEL.EHZ. 2009-04-08T22:35:33.45 0.1 undecidable manual Pg 70 30.2475 0.117 94
IV.PTQR.SHZ. 2009-04-08T22:35:33.63 0.1 undecidable manual Pg 194 31.9458 0.045 95
IV.FAGN.HHZ. 2009-04-08T22:35:33.15 0.3 undecidable manual Sg 118 8.2806 0.093 74
MN.AQU.HHZ. 2009-04-08T22:35:33.04 0.3 undecidable manual Sg 308 9.5793 -0.203 71
IV.CAMP.HHZ. 2009-04-08T22:35:32.86 0.1 undecidable manual Pg 345 26.9508 0.002 97
IV.T0104.EHZ. 2009-04-08T22:35:31.22 0.1 undecidable manual Pg 297 14.3745 0.056 99
IV.FAGN.HHZ. 2009-04-08T22:35:30.68 0.1 undecidable manual Pg 118 8.2806 0.128 98
MN.AQU.HHZ. 2009-04-08T22:35:30.71 0.1 undecidable manual Pg 308 9.5793 0.051 100
IV.ESLN.BHZ. 2009-04-08T22:35:18.80 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