Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 13-04-2009 and time 11:46:17 (UTC) in region 4 km N Fossa (AQ)

A magnitude ML 1.5 earthquake occured in region: 4 km N Fossa (AQ), on

  • 13-04-2009 11:46:17 (UTC)
  • 13-04-2009 13:46:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3250, 13.4790 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
Poggio Picenze AQ 5 1136 3024
Sant'Eusanio Forconese AQ 6 394 3418
L'Aquila AQ 7 69753 73171
Villa Sant'Angelo AQ 8 424 73595
San Demetrio ne' Vestini AQ 8 1854 75449
Barisciano AQ 9 1828 77277
Rocca di Cambio AQ 10 533 77810
Fagnano Alto AQ 11 418 78228
Prata d'Ansidonia AQ 12 496 78724
Lucoli AQ 12 1011 79735
Rocca di Mezzo AQ 13 1526 81261
Santo Stefano di Sessanio AQ 14 111 81372
Fontecchio AQ 15 369 81741
San Pio delle Camere AQ 15 661 82402
Tornimparte AQ 15 3187 85589
Carapelle Calvisio AQ 17 87 85676
Castelvecchio Calvisio AQ 17 153 85829
Caporciano AQ 18 230 86059
Calascio AQ 18 137 86196
Tione degli Abruzzi AQ 19 310 86506
Scoppito AQ 19 3727 90233
Pizzoli AQ 20 4326 94559

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km E of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
57 Km W of Chieti (51815 inhabitants)
59 Km W of Montesilvano (53738 inhabitants)
62 Km W of Pescara (121014 inhabitants)
69 Km NE of Tivoli (56533 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
73 Km E of Terni (111501 inhabitants)
92 Km NE of Velletri (53303 inhabitants)
95 Km SE of Foligno (57155 inhabitants)
95 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 2.0
ML 1.5 		2009-04-13
11:46:17		 42.325 13.479 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 798739
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-13 11:46:17 ± 0.05
Latitude 42.3250 ± 0.0036
Longitude 13.4790 ± 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 798739

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 421
Semi-minor axis of confidence ellipse (meter) 345
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
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) 67
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.06385
Epicentral distance of station farthest from the epicenter (degree) 0.46765
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 798739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:07:47

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 798739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:07:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2009-04-13T11:46:33.45 0.6 undecidable manual Sg 135 49.3173 0.371 45
IV.PTQR.SHZ. 2009-04-13T11:46:29.08 0.6 undecidable manual Sg 191 34.2435 0.032 50
IV.TERO.HHN. 2009-04-13T11:46:28.92 0.3 undecidable manual Sg 17 34.5432 -0.213 72
IV.VCEL.EHN. 2009-04-13T11:46:28.35 0.3 undecidable manual Sg 75 30.6471 0.268 72
IV.FIAM.HHE. 2009-04-13T11:46:28.14 0.3 undecidable manual Sg 258 30.3474 0.133 74
IV.INTR.HHZ. 2009-04-13T11:46:26.33 0.3 undecidable manual Pg 135 49.3173 -0.041 73
IV.VVLD.HHE. 2009-04-13T11:46:26.40 0.6 undecidable manual Pg 167 51.9036 -0.364 45
IV.CAMP.HHN. 2009-04-13T11:46:26.31 0.3 undecidable manual Sg 346 24.0537 0.068 76
IV.PTQR.SHZ. 2009-04-13T11:46:23.82 0.3 undecidable manual Pg 191 34.2435 -0.221 72
IV.FIAM.HHE. 2009-04-13T11:46:23.50 0.1 undecidable manual Pg 258 30.3474 0.059 100
IV.TERO.HHN. 2009-04-13T11:46:23.70 0.3 undecidable manual Pg 17 34.5432 -0.393 69
IV.VCEL.EHN. 2009-04-13T11:46:23.71 0.6 undecidable manual Pg 75 30.6471 0.226 48
IV.CAMP.HHN. 2009-04-13T11:46:22.58 0.3 undecidable manual Pg 346 24.0537 0.157 74
IV.FAGN.HHZ. 2009-04-13T11:46:22.26 0.3 undecidable manual Sg 127 10.878 -0.051 78
MN.AQU.HHZ. 2009-04-13T11:46:21.44 0.3 undecidable manual Sg 297 7.0929 -0.003 79
IV.FAGN.HHZ. 2009-04-13T11:46:20.07 0.3 undecidable manual Pg 127 10.878 -0.083 77
MN.AQU.HHZ. 2009-04-13T11:46:19.77 0.3 undecidable manual Pg 297 7.0929 0.118 77
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