Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 07-04-2009 and time 03:45:42 (Italy) in region 4 km NW Fossa (AQ)

A magnitude ML 2.3 earthquake occured in region: 4 km NW Fossa (AQ), on

  • 07-04-2009 01:45:42 (UTC)
  • 07-04-2009 03:45:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3270, 13.4640 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
Fossa AQ 4 721 721
Ocre AQ 5 1167 1888
L'Aquila AQ 6 69753 71641
Poggio Picenze AQ 7 1136 72777
Sant'Eusanio Forconese AQ 7 394 73171
Villa Sant'Angelo AQ 9 424 73595
San Demetrio ne' Vestini AQ 9 1854 75449
Rocca di Cambio AQ 10 533 75982
Barisciano AQ 11 1828 77810
Lucoli AQ 11 1011 78821
Fagnano Alto AQ 12 418 79239
Prata d'Ansidonia AQ 13 496 79735
Tornimparte AQ 14 3187 82922
Rocca di Mezzo AQ 14 1526 84448
Santo Stefano di Sessanio AQ 15 111 84559
Fontecchio AQ 16 369 84928
San Pio delle Camere AQ 16 661 85589
Scoppito AQ 18 3727 89316
Carapelle Calvisio AQ 18 87 89403
Pizzoli AQ 18 4326 93729
Castelvecchio Calvisio AQ 19 153 93882
Calascio AQ 19 137 94019
Caporciano AQ 19 230 94249
Tione degli Abruzzi AQ 20 310 94559

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km E of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
58 Km W of Chieti (51815 inhabitants)
60 Km W of Montesilvano (53738 inhabitants)
64 Km W of Pescara (121014 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km E of Terni (111501 inhabitants)
91 Km NE of Velletri (53303 inhabitants)
94 Km SE of Foligno (57155 inhabitants)
94 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 2.3 		2009-04-07
01:45:42		 42.327 13.464 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 764729
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-07 01:45:42 ± 0.06
Latitude 42.3270 ± 0.0036
Longitude 13.4640 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 764729

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 363
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
Circular confidence region, given by single value of horizontal uncertainty (meter) 565.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.90202
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 764729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:27:52

Md:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 764729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:27:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHE. 2009-04-07T01:46:11.47 10.0 undecidable manual Pg 0 0 0
IV.SGG.HHE. 2009-04-07T01:46:09.85 10.0 undecidable manual Pg 0 0 0
IV.TRTR.HHN. 2009-04-07T01:46:07.94 10.0 undecidable manual Pg 0 0 0
IV.NRCA.SHZ. 2009-04-07T01:46:02.23 0.3 undecidable manual Sg 333 62.9925 0.443 64
IV.CERT.HHE. 2009-04-07T01:46:00.90 0.3 undecidable manual Sg 224 57.7977 0.522 63
IV.ASSB.HHZ. 2009-04-07T01:46:00.82 10.0 undecidable manual Pg 0 0 0
IV.CING.HHE. 2009-04-07T01:45:59.17 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHZ. 2009-04-07T01:45:58.69 0.3 undecidable manual Sg 134 50.3163 0.29 67
IV.RMP.HHN. 2009-04-07T01:45:58.93 10.0 undecidable manual Pg 0 0 0
IV.MIDA.HHE. 2009-04-07T01:45:58.86 0.3 undecidable manual Pg 139 100.122 -0.345 61
IV.CESI.HHE. 2009-04-07T01:45:57.45 0.6 undecidable manual Pg 329 87.9453 0.113 43
IV.CERA.HHE. 2009-04-07T01:45:57.66 0.3 undecidable manual Pg 150 92.9403 -0.44 60
IV.GIUL.HHE. 2009-04-07T01:45:57.21 0.6 undecidable manual Pg 192 87.0462 0.016 44
IV.RDP.BHZ. 2009-04-07T01:45:57.55 0.3 undecidable manual Pg 225 88.1451 0.178 64
IV.FDMO.HHE. 2009-04-07T01:45:56.74 0.3 undecidable manual Pg 339 84.4488 -0.061 66
IV.OFFI.HHN. 2009-04-07T01:45:55.25 0.3 undecidable manual Pg 15 69.7746 0.712 57
IV.POFI.HHZ. 2009-04-07T01:45:54.71 0.3 undecidable manual Pg 163 70.6737 0.042 68
IV.MTCE.HHZ. 2009-04-07T01:45:54.33 0.3 undecidable manual Pg 241 68.2761 0.023 69
IV.NRCA.SHZ. 2009-04-07T01:45:53.41 0.6 undecidable manual Pg 333 62.9925 -0.086 46
IV.VCEL.EHN. 2009-04-07T01:45:53.50 0.3 undecidable manual Sg 76 31.746 0.072 73
IV.MNS.HHE. 2009-04-07T01:45:53.86 0.6 undecidable manual Pg 276 64.5909 0.132 45
IV.TERO.HHE. 2009-04-07T01:45:53.63 0.3 undecidable manual Sg 19 34.743 -0.599 64
IV.PTQR.SHZ. 2009-04-07T01:45:53.34 0.6 undecidable manual Sg 189 34.2435 -0.766 40
IV.CERT.HHE. 2009-04-07T01:45:52.78 0.3 undecidable manual Pg 224 57.7977 0.098 69
IV.GUAR.HHN. 2009-04-07T01:45:52.88 0.3 undecidable manual Pg 192 60.3951 -0.21 67
IV.FIAM.HHZ. 2009-04-07T01:45:52.75 0.1 undecidable manual Sg 257 29.2485 -0.016 99
IV.VVLD.HHE. 2009-04-07T01:45:51.53 0.3 undecidable manual Pg 166 52.4031 -0.327 67
.CAMP.---. 2009-04-07T01:45:51.00 0.3 undecidable manual Sg 349 23.5542 -0.002 75
IV.INTR.HHZ. 2009-04-07T01:45:51.62 0.3 undecidable manual Pg 134 50.3163 0.08 70
IV.PTQR.SHZ. 2009-04-07T01:45:48.95 0.1 undecidable manual Pg 189 34.2435 -0.111 96
IV.FIAM.HHZ. 2009-04-07T01:45:48.38 0.3 undecidable manual Pg 257 29.2485 0.093 73
IV.VCEL.EHN. 2009-04-07T01:45:48.69 0.3 undecidable manual Pg 76 31.746 0.021 74
IV.TERO.HHE. 2009-04-07T01:45:48.84 0.3 undecidable manual Pg 19 34.743 -0.292 69
.CAMP.---. 2009-04-07T01:45:47.30 0.1 undecidable manual Pg 349 23.5542 0.031 99
IV.FAGN.HHZ. 2009-04-07T01:45:47.70 0.3 undecidable manual Sg 125 11.877 0.224 73
MN.AQU.HHZ. 2009-04-07T01:45:45.86 0.1 undecidable manual Sg 300 5.8941 -0.216 99
IV.FAGN.HHZ. 2009-04-07T01:45:45.74 0.3 undecidable manual Pg 125 11.877 0.507 69
MN.AQU.HHZ. 2009-04-07T01:45:44.27 0.1 undecidable manual Pg 300 5.8941 -0.155 100
IV.ORI.EHE. 2009-04-07T01:45:03.16 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHN. 2009-04-07T01:44:53.84 10.0 undecidable manual Sg 0 0 0
IV.STR3.BHN. 2009-04-07T01:44:48.20 10.0 undecidable manual Pg 0 0 0
IV.BLLA.EHN. 2009-04-07T01:44:40.90 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-04-07T01:43:38.84 10.0 undecidable manual Sg 0 0 0
IV.SDI.SHZ. 2009-04-07T01:43:29.00 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