Earthquake with magnitude of ML 1.1 on date 24-02-2009 and time 16:55:34 (Italy) in region 3 km W L'Aquila (AQ)

A magnitude ML 1.1 earthquake occured in region: 3 km W L'Aquila (AQ), on

  • 24-02-2009 15:55:34 (UTC)
  • 24-02-2009 16:55:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3460, 13.3700 at 9 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 3 69753 69753
Lucoli AQ 7 1011 70764
Tornimparte AQ 8 3187 73951
Scoppito AQ 10 3727 77678
Ocre AQ 11 1167 78845
Fossa AQ 11 721 79566
Pizzoli AQ 12 4326 83892
Barete AQ 14 737 84629
Sant'Eusanio Forconese AQ 14 394 85023
Poggio Picenze AQ 15 1136 86159
Rocca di Cambio AQ 16 533 86692
Villa Sant'Angelo AQ 16 424 87116
San Demetrio ne' Vestini AQ 17 1854 88970
Cagnano Amiterno AQ 17 1369 90339
Barisciano AQ 18 1828 92167
Rocca di Mezzo AQ 20 1526 93693
Fagnano Alto AQ 20 418 94111

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km W of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
64 Km E of Terni (111501 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
66 Km W of Chieti (51815 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
71 Km W of Pescara (121014 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
88 Km NE of Velletri (53303 inhabitants)
89 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 1.7
ML 1.1
2009-02-24
15:55:34
42.346 13.37 9 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 746309
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-02-24 15:55:34 ± 0.09
Latitude 42.3460 ± 0.0045
Longitude 13.3700 ± 0.0049
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 746309

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 423
Semi-minor axis of confidence ellipse (meter) 363
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 36
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 0.52251
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 746309
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:06:47

Md:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations
Type of magnitude Md
Reference to an origin 746309
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:06:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHE. 2009-02-24T15:55:53.11 0.6 undecidable manual Sg 339 57.9975 0.289 44
IV.NRCA.HHE. 2009-02-24T15:55:45.01 0.6 undecidable manual Pg 339 57.9975 -0.015 47
IV.CAMP.HHN. 2009-02-24T15:55:42.18 0.3 undecidable manual Sg 9 21.2676 -0.197 72
IV.FIAM.HHZ. 2009-02-24T15:55:42.65 0.3 undecidable manual Sg 247 22.4553 -0.108 74
IV.FAGN.HHE. 2009-02-24T15:55:41.67 0.6 undecidable manual Sg 117 19.6692 -0.18 49
IV.FIAM.HHZ. 2009-02-24T15:55:39.19 0.1 undecidable manual Pg 247 22.4553 -0.024 100
IV.FAGN.HHE. 2009-02-24T15:55:38.66 0.1 undecidable manual Pg 117 19.6692 -0.033 100
IV.CAMP.HHN. 2009-02-24T15:55:38.88 0.1 undecidable manual Pg 9 21.2676 -0.117 98
MN.AQU.HHZ. 2009-02-24T15:55:37.78 0.6 undecidable manual Sg 71 2.7972 0.203 50
MN.AQU.HHZ. 2009-02-24T15:55:36.48 0.1 negative manual Pg 71 2.7972 0.254 98
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