Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 29-05-2009 and time 23:31:08 (UTC) in region 4 km NE L'Aquila (AQ)

A magnitude ML 1.5 earthquake occured in region: 4 km NE L'Aquila (AQ), on

  • 29-05-2009 23:31:08 (UTC)
  • 30-05-2009 01:31:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3820, 13.4320 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.

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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
Fossa AQ 11 721 70474
Ocre AQ 11 1167 71641
Poggio Picenze AQ 11 1136 72777
Lucoli AQ 13 1011 73788
Pizzoli AQ 13 4326 78114
Sant'Eusanio Forconese AQ 13 394 78508
Scoppito AQ 14 3727 82235
Barisciano AQ 14 1828 84063
Barete AQ 15 737 84800
Tornimparte AQ 15 3187 87987
San Demetrio ne' Vestini AQ 15 1854 89841
Villa Sant'Angelo AQ 15 424 90265
Rocca di Cambio AQ 17 533 90798
Santo Stefano di Sessanio AQ 18 111 90909
Prata d'Ansidonia AQ 18 496 91405
Fagnano Alto AQ 18 418 91823
Pietracamela TE 19 271 92094
Capitignano AQ 19 665 92759
Crognaleto TE 19 1297 94056
Cagnano Amiterno AQ 19 1369 95425

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km NE of L'Aquila (69753 inhabitants)
38 Km SW of Teramo (54892 inhabitants)
61 Km W of Chieti (51815 inhabitants)
61 Km W of Montesilvano (53738 inhabitants)
65 Km W of Pescara (121014 inhabitants)
67 Km E of Terni (111501 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
94 Km NE of Velletri (53303 inhabitants)
95 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 2.0
ML 1.5 		2009-05-29
23:31:08		 42.382 13.432 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 881749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-05-29 23:31:08 ± 0.09
Latitude 42.3820 ± 0.0045
Longitude 13.4320 ± 0.0085
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 881749

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 734
Semi-minor axis of confidence ellipse (meter) 482
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50812
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 881749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:45:12

Md:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 881749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:45:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHE. 2009-05-29T23:31:26.88 0.3 undecidable manual Sg 333 56.3991 0.366 65
IV.PTQR.SHZ. 2009-05-29T23:31:22.41 0.6 undecidable manual Sg 184 40.0266 0.27 45
IV.TERO.HHE. 2009-05-29T23:31:19.23 0.1 undecidable manual Sg 28 30.2475 -0.292 92
IV.NRCA.HHE. 2009-05-29T23:31:18.99 0.6 undecidable manual Pg 333 56.3991 -0.003 47
IV.T0107.HLZ. 2009-05-29T23:31:16.00 0.3 undecidable manual Sg 304 18.1707 0.122 73
IV.FAGN.HHE. 2009-05-29T23:31:16.11 0.3 undecidable manual Sg 136 17.9709 0.301 70
IV.PTQR.SHZ. 2009-05-29T23:31:15.90 0.3 undecidable manual Pg 184 40.0266 -0.567 63
IV.CAMP.HHZ. 2009-05-29T23:31:15.61 0.1 undecidable manual Sg 354 17.1717 0.026 100
IV.TERO.HHE. 2009-05-29T23:31:14.78 0.1 undecidable manual Pg 28 30.2475 -0.173 94
IV.T0104.EHZ. 2009-05-29T23:31:13.05 0.1 undecidable manual Sg 252 8.0808 -0.078 100
IV.T0102.HLE. 2009-05-29T23:31:13.69 0.3 undecidable manual Sg 0 0 0
IV.T0107.HLZ. 2009-05-29T23:31:13.14 0.3 undecidable manual Pg 304 18.1707 0.288 71
IV.T0105.HLN. 2009-05-29T23:31:13.63 0.3 undecidable manual Sg 0 0 0
IV.FAGN.HHE. 2009-05-29T23:31:13.30 0.3 undecidable manual Pg 136 17.9709 0.485 68
IV.CAMP.HHZ. 2009-05-29T23:31:12.70 0.3 undecidable manual Pg 354 17.1717 0.021 75
IV.T0105.HLN. 2009-05-29T23:31:11.69 0.1 undecidable manual Pg 0 0 0
IV.T0104.EHZ. 2009-05-29T23:31:11.36 0.1 undecidable manual Pg 252 8.0808 0.097 100
IV.T0102.HLE. 2009-05-29T23:31:11.60 0.3 undecidable manual Pg 0 0 0
MN.AQU.HHZ. 2009-05-29T23:31:11.92 0.1 undecidable manual Sg 218 3.996 -0.469 93
MN.AQU.HHZ. 2009-05-29T23:31:10.77 0.3 undecidable manual Pg 218 3.996 -0.065 76
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