Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 08-04-2009 and time 23:27:53 (Italy) in region 3 km SE Ocre (AQ)

A magnitude ML 1.9 earthquake occured in region: 3 km SE Ocre (AQ), on

  • 08-04-2009 21:27:53 (UTC)
  • 08-04-2009 23:27:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.2690, 13.4970 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
Ocre AQ 3 1167 1167
Fossa AQ 3 721 1888
Sant'Eusanio Forconese AQ 3 394 2282
Villa Sant'Angelo AQ 3 424 2706
Rocca di Cambio AQ 4 533 3239
San Demetrio ne' Vestini AQ 6 1854 5093
Fagnano Alto AQ 7 418 5511
Rocca di Mezzo AQ 7 1526 7037
Poggio Picenze AQ 7 1136 8173
Prata d'Ansidonia AQ 9 496 8669
Fontecchio AQ 10 369 9038
Barisciano AQ 10 1828 10866
L'Aquila AQ 12 69753 80619
San Pio delle Camere AQ 13 661 81280
Lucoli AQ 13 1011 82291
Tione degli Abruzzi AQ 14 310 82601
Caporciano AQ 15 230 82831
Santo Stefano di Sessanio AQ 15 111 82942
Ovindoli AQ 15 1227 84169
Carapelle Calvisio AQ 16 87 84256
Tornimparte AQ 16 3187 87443
Castelvecchio Calvisio AQ 17 153 87596
Calascio AQ 18 137 87733
Massa d'Albe AQ 20 1476 89209
Navelli AQ 20 554 89763
Secinaro AQ 20 359 90122

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SE of L'Aquila (69753 inhabitants)
47 Km SW of Teramo (54892 inhabitants)
56 Km W of Chieti (51815 inhabitants)
60 Km W of Montesilvano (53738 inhabitants)
63 Km W of Pescara (121014 inhabitants)
67 Km NE of Tivoli (56533 inhabitants)
70 Km E of Guidonia Montecelio (88673 inhabitants)
77 Km E of Terni (111501 inhabitants)
88 Km NE of Velletri (53303 inhabitants)
93 Km E 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 2.3
ML 1.9 		2009-04-08
21:27:53		 42.269 13.497 11 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 776089
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-08 21:27:53 ± 0.06
Latitude 42.2690 ± 0.0036
Longitude 13.4970 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 776089

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 455
Semi-minor axis of confidence ellipse (meter) 312
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
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) 51
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 31
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) 0.82468
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 776089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:13

Md:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 776089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.STR3.BHN. 2009-04-08T21:28:30.45 10.0 undecidable manual Pg 0 0 0
IV.OFFI.HHN. 2009-04-08T21:28:21.81 10.0 undecidable manual Pg 0 0 0
IV.RNI2.HHE. 2009-04-08T21:28:21.15 10.0 undecidable manual Pg 0 0 0
IV.CERA.HHN. 2009-04-08T21:28:19.76 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHZ. 2009-04-08T21:28:13.26 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHE. 2009-04-08T21:28:11.19 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHE. 2009-04-08T21:28:10.65 0.6 undecidable manual Sg 230 55.3002 0.08 46
IV.FDMO.HHE. 2009-04-08T21:28:08.84 0.3 undecidable manual Pg 339 91.5417 0.025 65
IV.INTR.HHZ. 2009-04-08T21:28:07.77 0.3 undecidable manual Sg 130 44.0226 0.225 68
IV.VVLD.HHZ. 2009-04-08T21:28:07.77 0.6 undecidable manual Sg 167 45.4212 -0.167 46
IV.TERO.HHN. 2009-04-08T21:28:06.15 0.3 undecidable manual Sg 12 40.2264 -0.397 66
IV.SDI.SHZ. 2009-04-08T21:28:05.26 0.6 undecidable manual Pg 157 67.1772 0.194 44
BA.PZUN.HHZ. 2009-04-08T21:28:05.57 10.0 undecidable manual Pg 0 0 0
IV.MNS.HHN. 2009-04-08T21:28:05.16 0.3 undecidable manual Pg 281 68.1762 -0.07 67
IV.VCEL.EHZ. 2009-04-08T21:28:05.38 0.6 undecidable manual Sg 63 31.4463 1.192 32
IV.NRCA.HHZ. 2009-04-08T21:28:05.41 0.1 undecidable manual Pg 334 70.0743 -0.105 89
IV.FIAM.HHZ. 2009-04-08T21:28:04.16 0.1 undecidable manual Sg 270 31.2465 0.018 97
IV.POFI.HHN. 2009-04-08T21:28:04.74 0.6 undecidable manual Pg 164 63.6918 0.216 44
IV.CERT.HHE. 2009-04-08T21:28:03.07 0.1 undecidable manual Pg 230 55.3002 -0.169 90
IV.PTQR.SHZ. 2009-04-08T21:28:03.07 1.0 undecidable manual Sg 196 28.5492 -0.346 23
IV.LNSS.HHN. 2009-04-08T21:28:03.73 0.3 undecidable manual Pg 315 52.7028 0.892 54
IV.GUAR.HHE. 2009-04-08T21:28:03.03 0.1 undecidable manual Pg 196 54.8007 -0.126 91
IV.CAMP.HHE. 2009-04-08T21:28:03.88 0.6 undecidable manual Sg 346 30.5472 -0.065 48
IV.VVLD.HHZ. 2009-04-08T21:28:01.60 0.3 undecidable manual Pg 167 45.4212 -0.121 69
IV.INTR.HHZ. 2009-04-08T21:28:01.46 0.1 undecidable manual Pg 130 44.0226 -0.035 94
IV.TERO.HHN. 2009-04-08T21:28:00.57 0.1 undecidable manual Pg 12 40.2264 -0.346 89
IV.T0104.EHZ. 2009-04-08T21:27:59.88 0.3 undecidable manual Sg 308 16.5723 -0.143 73
IV.VCEL.EHZ. 2009-04-08T21:27:59.37 0.3 undecidable manual Pg 63 31.4463 -0.19 70
IV.FIAM.HHZ. 2009-04-08T21:27:59.50 0.1 undecidable manual Pg 270 31.2465 -0.027 97
IV.PTQR.SHZ. 2009-04-08T21:27:59.07 0.3 undecidable manual Pg 196 28.5492 -0.039 73
IV.CAMP.HHE. 2009-04-08T21:27:59.33 0.3 undecidable manual Pg 346 30.5472 -0.088 72
MN.AQU.HHZ. 2009-04-08T21:27:58.67 0.3 undecidable manual Sg 320 12.2766 -0.167 73
IV.T0108.HLN. 2009-04-08T21:27:58.88 0.1 undecidable manual Sg 307 12.3765 0.017 100
IV.FAGN.HHZ. 2009-04-08T21:27:57.32 0.3 undecidable manual Sg 93 7.0929 -0.312 71
IV.T0104.EHZ. 2009-04-08T21:27:57.37 0.1 undecidable manual Pg 308 16.5723 0.215 95
IV.T0108.HLN. 2009-04-08T21:27:56.72 0.1 undecidable manual Pg 307 12.3765 0.236 96
MN.AQU.HHZ. 2009-04-08T21:27:56.63 0.1 undecidable manual Pg 320 12.2766 0.166 97
IV.FAGN.HHZ. 2009-04-08T21:27:55.86 0.1 undecidable manual Pg 93 7.0929 0.089 99
IV.ZCCA.HHN. 2009-04-08T21:27:50.72 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