Earthquake with magnitude of ML 1.2 on date 22-02-2009 and time 05:03:36 (Italy) in region 3 km W L'Aquila (AQ)

A magnitude ML 1.2 earthquake occured in region: 3 km W L'Aquila (AQ), on

  • 22-02-2009 04:03:36 (UTC)
  • 22-02-2009 05:03:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3440, 13.3710 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.

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 6 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 14 1136 86159
Rocca di Cambio AQ 15 533 86692
Villa Sant'Angelo AQ 16 424 87116
San Demetrio ne' Vestini AQ 17 1854 88970
Cagnano Amiterno AQ 18 1369 90339
Barisciano AQ 18 1828 92167
Rocca di Mezzo AQ 19 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)
45 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 1.9
ML 1.2
2009-02-22
04:03:36
42.344 13.371 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 745629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-02-22 04:03:36 ± 0.11
Latitude 42.3440 ± 0.0063
Longitude 13.3710 ± 0.0097
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 745629

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 803
Semi-minor axis of confidence ellipse (meter) 716
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 1063.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 0.52430
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:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 745629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:06:01

Md:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 745629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:06:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHN. 2009-02-22T04:03:49.23 0.6 undecidable manual Sg 32 36.3414 0.515 44
IV.PTQR.SHZ. 2009-02-22T04:03:48.15 0.6 undecidable manual Sg 176 35.742 -0.416 45
IV.NRCA.HHE. 2009-02-22T04:03:46.80 0.3 undecidable manual Pg 339 58.1973 -0.074 70
IV.CAMP.HHZ. 2009-02-22T04:03:44.24 0.3 undecidable manual Sg 8 21.5673 -0.398 70
IV.LNSS.HHE. 2009-02-22T04:03:44.98 0.3 undecidable manual Pg 317 39.5271 0.997 54
IV.FIAM.HHZ. 2009-02-22T04:03:44.81 0.6 undecidable manual Sg 248 22.4553 -0.127 49
IV.VCEL.EHZ. 2009-02-22T04:03:44.03 0.3 undecidable manual Pg 82 38.8278 0.142 71
IV.FAGN.HHN. 2009-02-22T04:03:44.15 0.3 undecidable manual Sg 116 19.4694 0.151 74
IV.TERO.HHN. 2009-02-22T04:03:42.96 0.1 undecidable manual Pg 32 36.3414 -0.538 87
IV.PTQR.SHZ. 2009-02-22T04:03:42.97 0.6 undecidable manual Pg 176 35.742 -0.442 45
IV.CAMP.HHZ. 2009-02-22T04:03:41.05 0.1 undecidable manual Pg 8 21.5673 -0.094 99
IV.FIAM.HHZ. 2009-02-22T04:03:41.39 0.1 positive manual Pg 248 22.4553 0.074 99
IV.FAGN.HHN. 2009-02-22T04:03:40.93 0.1 undecidable manual Pg 116 19.4694 0.155 98
MN.AQU.HHZ. 2009-02-22T04:03:39.91 0.6 undecidable manual Sg 66 2.7972 -0.133 51
MN.AQU.HHZ. 2009-02-22T04:03:38.70 0.1 undecidable manual Pg 66 2.7972 0.21 100
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