Earthquake with magnitude of ML 1.4 on date 19-04-2009 and time 21:47:07 (Italy) in region 4 km NW L'Aquila (AQ)

A magnitude ML 1.4 earthquake occured in region: 4 km NW L'Aquila (AQ), on

  • 19-04-2009 19:47:07 (UTC)
  • 19-04-2009 21:47:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3890, 13.3810 at 3 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
L'Aquila AQ 4 69753 69753
Pizzoli AQ 9 4326 74079
Scoppito AQ 10 3727 77806
Barete AQ 11 737 78543
Lucoli AQ 11 1011 79554
Tornimparte AQ 13 3187 82741
Fossa AQ 14 721 83462
Ocre AQ 14 1167 84629
Cagnano Amiterno AQ 15 1369 85998
Poggio Picenze AQ 15 1136 87134
Capitignano AQ 16 665 87799
Sant'Eusanio Forconese AQ 16 394 88193
San Demetrio ne' Vestini AQ 18 1854 90047
Villa Sant'Angelo AQ 18 424 90471
Barisciano AQ 19 1828 92299
Montereale AQ 19 2581 94880
Campotosto AQ 19 542 95422
Rocca di Cambio AQ 19 533 95955
Crognaleto TE 20 1297 97252

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km NW of L'Aquila (69753 inhabitants)
40 Km SW of Teramo (54892 inhabitants)
63 Km E of Terni (111501 inhabitants)
65 Km W of Montesilvano (53738 inhabitants)
65 Km W of Chieti (51815 inhabitants)
67 Km NE of Tivoli (56533 inhabitants)
69 Km W of Pescara (121014 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km SE of Foligno (57155 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
93 Km NE of Velletri (53303 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 1.9
ML 1.4
2009-04-19
19:47:07
42.389 13.381 3 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 822559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-19 19:47:07 ± 0.13
Latitude 42.3890 ± 0.0090
Longitude 13.3810 ± 0.0037
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 822559

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 856
Semi-minor axis of confidence ellipse (meter) 519
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 173
Circular confidence region, given by single value of horizontal uncertainty (meter) 1044.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 211
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33904
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 822559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:35:33

Md:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 822559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 15:35:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
.VCEL.EHN. 2009-04-19T19:47:20.20 0.3 undecidable manual Sg 89 37.629 -0.277 67
IV.FIAM.HHZ. 2009-04-19T19:47:16.21 0.1 undecidable manual Sg 238 25.4523 -0.08 96
.VCEL.EHN. 2009-04-19T19:47:15.13 0.3 undecidable manual Pg 89 37.629 0.188 69
IV.FAGN.HHE. 2009-04-19T19:47:14.90 0.1 undecidable manual Sg 129 21.5673 -0.022 97
IV.FIAM.HHZ. 2009-04-19T19:47:12.51 0.1 undecidable manual Pg 238 25.4523 -0.018 97
IV.FAGN.HHE. 2009-04-19T19:47:11.84 0.1 undecidable manual Pg 129 21.5673 0.109 96
MN.AQU.HHZ. 2009-04-19T19:47:09.17 0.1 undecidable manual Sg 157 4.2957 -0.034 100
MN.AQU.HHZ. 2009-04-19T19:47:08.52 0.1 undecidable manual Pg 157 4.2957 0.097 99
IV.CDCA.EHE. 2009-04-19T19:47:08.31 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