Earthquake with magnitude of ML 1.3 on date 11-05-2009 and time 22:00:20 (Italy) in region 2 km E L'Aquila (AQ)

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

  • 11-05-2009 20:00:20 (UTC)
  • 11-05-2009 22:00:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3540, 13.4250 at 8 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
Fossa AQ 9 721 70474
Ocre AQ 9 1167 71641
Lucoli AQ 10 1011 72652
Poggio Picenze AQ 10 1136 73788
Sant'Eusanio Forconese AQ 11 394 74182
Tornimparte AQ 12 3187 77369
Villa Sant'Angelo AQ 13 424 77793
San Demetrio ne' Vestini AQ 13 1854 79647
Scoppito AQ 14 3727 83374
Barisciano AQ 14 1828 85202
Pizzoli AQ 14 4326 89528
Rocca di Cambio AQ 14 533 90061
Barete AQ 16 737 90798
Fagnano Alto AQ 17 418 91216
Prata d'Ansidonia AQ 17 496 91712
Rocca di Mezzo AQ 18 1526 93238
Santo Stefano di Sessanio AQ 18 111 93349

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km E of L'Aquila (69753 inhabitants)
41 Km SW of Teramo (54892 inhabitants)
61 Km W of Chieti (51815 inhabitants)
62 Km W of Montesilvano (53738 inhabitants)
66 Km W of Pescara (121014 inhabitants)
67 Km NE of Tivoli (56533 inhabitants)
68 Km E of Terni (111501 inhabitants)
70 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km SE of Foligno (57155 inhabitants)
91 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 1.9
ML 1.3
2009-05-11
20:00:20
42.354 13.425 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 861849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-05-11 20:00:20 ± 0.09
Latitude 42.3540 ± 0.0045
Longitude 13.4250 ± 0.0061
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 861849

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 328
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 707.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53060
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 861849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:21:34

Md:1.9

Field Value
Value 1.9
Uncertainty 0.0
Num. used stations
Type of magnitude Md
Reference to an origin 861849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:21:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.SHZ. 2009-05-11T20:00:39.37 0.1 undecidable manual Sg 335 58.8966 0.13 90
IV.INTR.HHN. 2009-05-11T20:00:38.14 0.1 undecidable manual Sg 134 54.8007 -0.003 93
IV.VVLD.HHE. 2009-05-11T20:00:37.15 10.0 undecidable manual Pg 0 0 0
IV.VCEL.EHZ. 2009-05-11T20:00:33.08 0.1 undecidable manual Sg 82 34.3434 0.416 88
IV.PTQR.SHZ. 2009-05-11T20:00:32.79 0.1 undecidable manual Sg 183 36.9297 -0.587 84
IV.TERO.HHZ. 2009-05-11T20:00:31.53 0.1 undecidable manual Sg 26 33.1446 -0.732 79
IV.FIAM.HHZ. 2009-05-11T20:00:30.35 0.1 undecidable manual Sg 249 26.9508 0.165 95
IV.INTR.HHN. 2009-05-11T20:00:30.67 0.6 undecidable manual Pg 134 54.8007 0.025 46
IV.NRCA.SHZ. 2009-05-11T20:00:30.92 0.3 undecidable manual Pg 335 58.8966 -0.357 64
IV.LNSS.HHE. 2009-05-11T20:00:29.06 0.1 undecidable manual Pg 311 41.8248 0.415 87
IV.CAMP.HHZ. 2009-05-11T20:00:28.07 0.1 undecidable manual Sg 356 20.1687 0.12 97
IV.PTQR.SHZ. 2009-05-11T20:00:27.78 0.1 undecidable manual Pg 183 36.9297 -0.113 94
IV.VCEL.EHZ. 2009-05-11T20:00:27.92 0.1 undecidable manual Pg 82 34.3434 0.439 88
IV.FAGN.HHZ. 2009-05-11T20:00:26.70 0.1 undecidable manual Sg 127 16.3725 -0.036 99
IV.FIAM.HHZ. 2009-05-11T20:00:26.15 0.1 undecidable manual Pg 249 26.9508 0.096 96
IV.TERO.HHZ. 2009-05-11T20:00:26.77 0.1 undecidable manual Pg 26 33.1446 -0.479 87
IV.CAMP.HHZ. 2009-05-11T20:00:25.07 0.1 undecidable manual Pg 356 20.1687 0.308 93
IV.FAGN.HHZ. 2009-05-11T20:00:24.40 0.1 undecidable manual Pg 127 16.3725 0.336 93
IV.RNI2.HHE. 2009-05-11T20:00:24.62 10.0 undecidable manual Pg 0 0 0
IV.T0104.EHZ. 2009-05-11T20:00:24.26 0.1 undecidable manual Sg 275 7.0929 0.102 99
IV.T0104.EHZ. 2009-05-11T20:00:22.82 0.1 undecidable manual Pg 275 7.0929 0.249 96
MN.AQU.HHZ. 2009-05-11T20:00:22.70 0.1 undecidable manual Sg 268 1.8981 -0.597 88
MN.AQU.HHZ. 2009-05-11T20:00:21.98 0.1 undecidable manual Pg 268 1.8981 -0.101 100
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