Earthquake with magnitude of ML 1.3 on date 06-05-2009 and time 13:22:38 (Italy) in region 2 km NW L'Aquila (AQ)

A magnitude ML 1.3 earthquake occured in region: 2 km NW L'Aquila (AQ), on

  • 06-05-2009 11:22:38 (UTC)
  • 06-05-2009 13:22:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3670, 13.3790 at 6 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 2 69753 69753
Lucoli AQ 9 1011 70764
Scoppito AQ 10 3727 74491
Pizzoli AQ 10 4326 78817
Tornimparte AQ 11 3187 82004
Ocre AQ 12 1167 83171
Fossa AQ 12 721 83892
Barete AQ 12 737 84629
Poggio Picenze AQ 14 1136 85765
Sant'Eusanio Forconese AQ 15 394 86159
Cagnano Amiterno AQ 16 1369 87528
Villa Sant'Angelo AQ 17 424 87952
Rocca di Cambio AQ 17 533 88485
San Demetrio ne' Vestini AQ 17 1854 90339
Barisciano AQ 18 1828 92167
Capitignano AQ 18 665 92832

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km NW of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
64 Km E of Terni (111501 inhabitants)
65 Km W of Chieti (51815 inhabitants)
65 Km W of Montesilvano (53738 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km W of Pescara (121014 inhabitants)
86 Km SE of Foligno (57155 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
91 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 1.5
ML 1.3
2009-05-06
11:22:38
42.367 13.379 6 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 852729
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-05-06 11:22:38 ± 0.5
Latitude 42.3670 ± 0.0306
Longitude 13.3790 ± 0.0134
Depth (km) 6 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 852729

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3474
Semi-minor axis of confidence ellipse (meter) 947
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 10
Circular confidence region, given by single value of horizontal uncertainty (meter) 3573.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 226
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.02068
Epicentral distance of station farthest from the epicenter (degree) 0.18166
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 852729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:10:50

Md:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations
Type of magnitude Md
Reference to an origin 852729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:10:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FAGN.HHE. 2009-05-06T11:22:45.89 0.3 undecidable manual Sg 124 20.1687 0.197 71
IV.FAGN.HHE. 2009-05-06T11:22:42.60 0.3 undecidable manual Pg 124 20.1687 -0.009 72
IV.T0104.EHZ. 2009-05-06T11:22:40.80 0.1 undecidable manual Sg 258 3.4965 0.003 99
MN.AQU.HHZ. 2009-05-06T11:22:40.14 0.1 undecidable manual Sg 127 2.2977 -0.487 91
MN.AQU.HHZ. 2009-05-06T11:22:39.52 0.1 undecidable manual Pg 127 2.2977 -0.166 100
IV.T0104.EHZ. 2009-05-06T11:22:39.72 0.1 undecidable manual Pg 258 3.4965 -0.065 100
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