Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 09-04-2009 and time 01:17:04 (Italy) in region 2 km S Ocre (AQ)

A magnitude ML 1.4 earthquake occured in region: 2 km S Ocre (AQ), on

  • 08-04-2009 23:17:04 (UTC)
  • 09-04-2009 01:17:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.2710, 13.4780 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 2 1167 1167
Fossa AQ 3 721 1888
Rocca di Cambio AQ 4 533 2421
Sant'Eusanio Forconese AQ 4 394 2815
Villa Sant'Angelo AQ 5 424 3239
San Demetrio ne' Vestini AQ 7 1854 5093
Rocca di Mezzo AQ 8 1526 6619
Poggio Picenze AQ 8 1136 7755
Fagnano Alto AQ 8 418 8173
Prata d'Ansidonia AQ 11 496 8669
L'Aquila AQ 11 69753 78422
Barisciano AQ 11 1828 80250
Fontecchio AQ 12 369 80619
Lucoli AQ 12 1011 81630
Tornimparte AQ 15 3187 84817
San Pio delle Camere AQ 15 661 85478
Tione degli Abruzzi AQ 15 310 85788
Ovindoli AQ 16 1227 87015
Santo Stefano di Sessanio AQ 16 111 87126
Caporciano AQ 16 230 87356
Carapelle Calvisio AQ 17 87 87443
Castelvecchio Calvisio AQ 18 153 87596
Calascio AQ 19 137 87733
Massa d'Albe AQ 19 1476 89209

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km SE of L'Aquila (69753 inhabitants)
47 Km SW of Teramo (54892 inhabitants)
58 Km W of Chieti (51815 inhabitants)
62 Km W of Montesilvano (53738 inhabitants)
64 Km W of Pescara (121014 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
69 Km E of Guidonia Montecelio (88673 inhabitants)
75 Km E of Terni (111501 inhabitants)
87 Km NE of Velletri (53303 inhabitants)
92 Km E of Roma (2864731 inhabitants)
99 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 		ML 1.4 2009-04-08
23:17:04		 42.271 13.478 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 776519
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-08 23:17:04 ± 0.04
Latitude 42.2710 ± 0.0036
Longitude 13.4780 ± 0.0036
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 776519

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 449
Semi-minor axis of confidence ellipse (meter) 257
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41459
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 776519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAMP.HHN. 2009-04-08T23:17:45.43 10.0 undecidable manual Sg 0 0 0
IV.CAMP.HHN. 2009-04-08T23:17:40.80 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHE. 2009-04-08T23:17:19.10 0.3 undecidable manual Sg 129 45.4212 -0.021 71
IV.VVLD.HHN. 2009-04-08T23:17:19.13 0.3 undecidable manual Sg 165 46.0206 -0.171 69
IV.VCEL.EHN. 2009-04-08T23:17:15.67 0.6 undecidable manual Sg 65 32.8449 -0.091 48
IV.SDI.SHZ. 2009-04-08T23:17:15.68 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2009-04-08T23:17:14.46 10.0 undecidable manual Pg 0 0 0
IV.PTQR.SHZ. 2009-04-08T23:17:14.45 0.3 undecidable manual Sg 193 28.2495 -0.109 72
IV.FIAM.HHN. 2009-04-08T23:17:14.87 0.3 undecidable manual Sg 270 29.5482 -0.037 73
IV.VVLD.HHN. 2009-04-08T23:17:13.32 0.3 undecidable manual Pg 165 46.0206 0.336 67
IV.INTR.HHE. 2009-04-08T23:17:12.85 0.1 undecidable manual Pg 129 45.4212 -0.028 95
IV.VCEL.EHN. 2009-04-08T23:17:11.00 0.3 undecidable manual Pg 65 32.8449 0.06 73
IV.PTQR.SHZ. 2009-04-08T23:17:10.29 0.3 undecidable manual Pg 193 28.2495 0.042 73
IV.FIAM.HHN. 2009-04-08T23:17:10.43 0.1 undecidable manual Pg 270 29.5482 -0.014 98
IV.T0104.EHZ. 2009-04-08T23:17:10.63 0.1 undecidable manual Sg 311 15.1737 -0.045 100
MN.AQU.HHE. 2009-04-08T23:17:09.33 0.3 undecidable manual Sg 326 11.0778 -0.257 72
IV.T0104.EHZ. 2009-04-08T23:17:08.19 0.1 undecidable manual Pg 311 15.1737 0.183 97
IV.FAGN.HHZ. 2009-04-08T23:17:08.84 0.3 undecidable manual Sg 93 8.7801 -0.164 74
IV.FAGN.HHZ. 2009-04-08T23:17:07.18 0.1 undecidable manual Pg 93 8.7801 0.14 99
MN.AQU.HHE. 2009-04-08T23:17:07.47 0.1 undecidable manual Pg 326 11.0778 0.095 100
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