Earthquake with magnitude of ML 0.3 on date 20-05-2009 and time 03:51:24 (UTC) in region 3 km N L'Aquila (AQ)

A magnitude ML 0.3 earthquake occured in region: 3 km N L'Aquila (AQ), on

  • 20-05-2009 03:51:24 (UTC)
  • 20-05-2009 05:51:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3760, 13.4080 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 3 69753 69753
Lucoli AQ 11 1011 70764
Fossa AQ 11 721 71485
Pizzoli AQ 11 4326 75811
Ocre AQ 12 1167 76978
Scoppito AQ 12 3727 80705
Poggio Picenze AQ 13 1136 81841
Tornimparte AQ 13 3187 85028
Barete AQ 13 737 85765
Sant'Eusanio Forconese AQ 14 394 86159
San Demetrio ne' Vestini AQ 16 1854 88013
Villa Sant'Angelo AQ 16 424 88437
Barisciano AQ 16 1828 90265
Rocca di Cambio AQ 17 533 90798
Cagnano Amiterno AQ 18 1369 92167
Capitignano AQ 18 665 92832
Fagnano Alto AQ 19 418 93250
Prata d'Ansidonia AQ 20 496 93746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km N of L'Aquila (69753 inhabitants)
40 Km SW of Teramo (54892 inhabitants)
63 Km W of Chieti (51815 inhabitants)
63 Km W of Montesilvano (53738 inhabitants)
66 Km E of Terni (111501 inhabitants)
67 Km W of Pescara (121014 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
70 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
93 Km NE of Velletri (53303 inhabitants)
93 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 1.4
ML 0.3
2009-05-20
03:51:24
42.376 13.408 6 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 872809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-05-20 03:51:24 ± 0.08
Latitude 42.3760 ± 0.0018
Longitude 13.4080 ± 0.0037
Depth (km) 6 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 872809

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 231
Semi-minor axis of confidence ellipse (meter) 188
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 281
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 191
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.05
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.15918
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 872809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:34:31

Md:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 872809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:34:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RSM.HHZ. 2009-05-20T03:51:41.84 10.0 undecidable manual Pg 0 0 0
IV.RNI2.HHE. 2009-05-20T03:51:39.90 10.0 undecidable manual Pg 0 0 0
IV.VVLD.HHZ. 2009-05-20T03:51:30.54 10.0 undecidable manual Pg 0 0 0
IV.CAMP.HHZ. 2009-05-20T03:51:30.76 0.1 undecidable manual Sg 0 17.6712 0.029 97
IV.CAMP.HHZ. 2009-05-20T03:51:27.96 0.1 undecidable manual Pg 0 17.6712 -0.049 97
IV.T0104.EHZ. 2009-05-20T03:51:27.11 0.1 undecidable manual Sg 253 5.994 -0.009 100
MN.AQU.HHN. 2009-05-20T03:51:26.38 0.1 undecidable manual Sg 191 2.4975 -0.018 100
MN.AQU.HHN. 2009-05-20T03:51:25.54 0.1 undecidable manual Pg 191 2.4975 0.033 100
IV.T0104.EHZ. 2009-05-20T03:51:25.94 0.1 undecidable manual Pg 253 5.994 0.017 99
IV.FAGN.HHN. 2009-05-20T03:51:23.27 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