Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 08-04-2009 and time 21:15:47 (Italy) in region 2 km NW Ocre (AQ)

A magnitude ML 1.9 earthquake occured in region: 2 km NW Ocre (AQ), on

  • 08-04-2009 19:15:47 (UTC)
  • 08-04-2009 21:15:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3040, 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 2 721 721
Ocre AQ 2 1167 1888
Sant'Eusanio Forconese AQ 5 394 2282
Poggio Picenze AQ 7 1136 3418
Villa Sant'Angelo AQ 7 424 3842
L'Aquila AQ 8 69753 73595
Rocca di Cambio AQ 8 533 74128
San Demetrio ne' Vestini AQ 8 1854 75982
Lucoli AQ 10 1011 76993
Fagnano Alto AQ 11 418 77411
Barisciano AQ 11 1828 79239
Rocca di Mezzo AQ 12 1526 80765
Prata d'Ansidonia AQ 12 496 81261
Tornimparte AQ 14 3187 84448
Fontecchio AQ 14 369 84817
Santo Stefano di Sessanio AQ 16 111 84928
San Pio delle Camere AQ 16 661 85589
Tione degli Abruzzi AQ 18 310 85899
Carapelle Calvisio AQ 18 87 85986
Caporciano AQ 18 230 86216
Castelvecchio Calvisio AQ 19 153 86369
Scoppito AQ 19 3727 90096
Calascio AQ 19 137 90233
Ovindoli AQ 19 1227 91460

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SE of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
58 Km W of Chieti (51815 inhabitants)
61 Km W of Montesilvano (53738 inhabitants)
64 Km W of Pescara (121014 inhabitants)
67 Km NE of Tivoli (56533 inhabitants)
69 Km E of Guidonia Montecelio (88673 inhabitants)
73 Km E of Terni (111501 inhabitants)
89 Km NE of Velletri (53303 inhabitants)
93 Km NE of Roma (2864731 inhabitants)
96 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 2.2
ML 1.9 		2009-04-08
19:15:47		 42.304 13.464 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 775589
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-08 19:15:47 ± 0.07
Latitude 42.3040 ± 0.0045
Longitude 13.4640 ± 0.0061
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 775589

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 571
Semi-minor axis of confidence ellipse (meter) 375
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
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) 54
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.78241
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 775589
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:40:37

Md:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 775589
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:40:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHE. 2009-04-08T19:16:15.68 10.0 undecidable manual Pg 0 0 0
IV.ORI.EHE. 2009-04-08T19:16:14.34 10.0 undecidable manual Pg 0 0 0
IV.CERA.HHN. 2009-04-08T19:16:14.84 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHN. 2009-04-08T19:16:14.77 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-04-08T19:16:13.61 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHE. 2009-04-08T19:16:11.97 10.0 undecidable manual Pg 0 0 0
IV.POFI.HHN. 2009-04-08T19:16:08.82 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHE. 2009-04-08T19:16:03.14 0.3 undecidable manual Sg 132 48.618 0.279 68
IV.FDMO.HHN. 2009-04-08T19:16:02.15 0.3 undecidable manual Pg 339 86.8464 0.016 67
IV.SDI.SHZ. 2009-04-08T19:16:02.32 10.0 undecidable manual Pg 0 0 0
IV.TERO.HHZ. 2009-04-08T19:15:59.32 0.6 undecidable manual Sg 18 37.1295 -0.475 44
IV.VCEL.EHZ. 2009-04-08T19:15:59.27 0.6 undecidable manual Sg 72 32.4453 0.731 40
IV.NRCA.SHZ. 2009-04-08T19:15:58.66 0.3 undecidable manual Pg 334 65.2902 -0.155 67
IV.GUAR.HHE. 2009-04-08T19:15:58.78 0.6 undecidable manual Pg 193 57.8976 1.112 33
IV.MNS.HHE. 2009-04-08T19:15:58.72 0.3 undecidable manual Pg 278 64.7907 -0.017 69
IV.PTQR.SHZ. 2009-04-08T19:15:58.09 0.3 undecidable manual Sg 189 31.746 -0.252 70
IV.CERT.HHZ. 2009-04-08T19:15:57.19 0.1 undecidable manual Pg 225 55.8996 -0.174 91
IV.FIAM.HHZ. 2009-04-08T19:15:57.73 0.6 undecidable manual Sg 262 28.749 0.18 48
IV.INTR.HHE. 2009-04-08T19:15:56.14 0.1 undecidable manual Pg 132 48.618 -0.103 94
IV.VVLD.HHN. 2009-04-08T19:15:56.15 0.3 undecidable manual Pg 165 49.9167 -0.296 67
IV.CAMP.HHZ. 2009-04-08T19:15:56.70 0.6 undecidable manual Sg 350 26.0517 -0.137 48
IV.LNSS.HHE. 2009-04-08T19:15:56.38 0.3 undecidable manual Pg 314 47.9187 0.245 68
IV.TERO.HHZ. 2009-04-08T19:15:54.13 0.1 undecidable manual Pg 18 37.1295 -0.341 91
IV.VCEL.EHZ. 2009-04-08T19:15:54.23 0.1 undecidable manual Pg 72 32.4453 0.476 89
IV.FIAM.HHZ. 2009-04-08T19:15:53.21 0.1 undecidable manual Pg 262 28.749 0.036 98
IV.PTQR.SHZ. 2009-04-08T19:15:53.44 0.1 undecidable manual Pg 189 31.746 -0.199 95
IV.T0104.EHZ. 2009-04-08T19:15:52.97 0.3 undecidable manual Sg 301 11.9769 0.315 72
IV.CAMP.HHZ. 2009-04-08T19:15:52.60 0.1 undecidable manual Pg 350 26.0517 -0.166 96
IV.FAGN.HHZ. 2009-04-08T19:15:52.01 0.6 undecidable manual Sg 113 10.6782 -0.308 48
MN.AQU.HHZ. 2009-04-08T19:15:51.30 0.3 undecidable manual Sg 317 7.4814 -0.275 73
IV.FAGN.HHZ. 2009-04-08T19:15:50.05 0.1 undecidable manual Pg 113 10.6782 -0.108 100
IV.T0104.EHZ. 2009-04-08T19:15:50.55 0.1 undecidable manual Pg 301 11.9769 0.197 98
MN.AQU.HHZ. 2009-04-08T19:15:49.89 0.1 undecidable manual Pg 317 7.4814 0.165 99
IV.ZCCA.HHE. 2009-04-08T19:15:38.91 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