Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 13-07-2009 and time 00:35:24 (UTC) in region 3 km SW L'Aquila (AQ)

A magnitude ML 1.9 earthquake occured in region: 3 km SW L'Aquila (AQ), on

  • 13-07-2009 00:35:24 (UTC)
  • 13-07-2009 02:35:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3280, 13.3830 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 3 69753 69753
Lucoli AQ 5 1011 70764
Tornimparte AQ 8 3187 73951
Ocre AQ 9 1167 75118
Fossa AQ 10 721 75839
Scoppito AQ 11 3727 79566
Sant'Eusanio Forconese AQ 13 394 79960
Poggio Picenze AQ 13 1136 81096
Rocca di Cambio AQ 13 533 81629
Pizzoli AQ 14 4326 85955
Villa Sant'Angelo AQ 14 424 86379
San Demetrio ne' Vestini AQ 15 1854 88233
Barete AQ 16 737 88970
Barisciano AQ 17 1828 90798
Rocca di Mezzo AQ 17 1526 92324
Fagnano Alto AQ 18 418 92742
Prata d'Ansidonia AQ 19 496 93238
Borgorose RI 19 4591 97829
Cagnano Amiterno AQ 20 1369 99198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SW of L'Aquila (69753 inhabitants)
45 Km SW of Teramo (54892 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
65 Km W of Chieti (51815 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
66 Km E of Terni (111501 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
70 Km W of Pescara (121014 inhabitants)
87 Km NE of Velletri (53303 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
89 Km SE of Foligno (57155 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 2.6
ML 1.9 		2009-07-13
00:35:24		 42.328 13.383 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 924449
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-13 00:35:24 ± 0.07
Latitude 42.3280 ± 0.0036
Longitude 13.3830 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 924449

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 428
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.21319
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 924449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:36:33

Md:2.6

Field Value
Value 2.6
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 924449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:36:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERA.HHN. 2009-07-13T00:35:56.56 10.0 undecidable manual Sg 0 0 0
IV.FSSB.SHZ. 2009-07-13T00:35:53.22 10.0 undecidable manual Pg 0 0 0
IV.RMP.HHE. 2009-07-13T00:35:52.06 10.0 undecidable manual Sg 0 0 0
IV.GUMA.HHN. 2009-07-13T00:35:49.79 10.0 undecidable manual Pg 0 0 0
IV.CERA.HHN. 2009-07-13T00:35:47.38 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-07-13T00:35:47.50 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHN. 2009-07-13T00:35:46.71 0.3 undecidable manual Pg 345 134.6652 0.221 58
IV.SNTG.SHZ. 2009-07-13T00:35:46.27 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHN. 2009-07-13T00:35:45.38 0.3 undecidable manual Pg 302 122.3886 0.785 50
IV.RDP.HHN. 2009-07-13T00:35:43.65 10.0 undecidable manual Pg 0 0 0
IV.VVLD.HHE. 2009-07-13T00:35:43.72 10.0 undecidable manual Sg 0 0 0
IV.NRCA.SHZ. 2009-07-13T00:35:43.41 0.3 undecidable manual Sg 339 60.1953 0.485 63
IV.CING.HHN. 2009-07-13T00:35:43.93 0.3 undecidable manual Pg 353 117.1938 0.132 61
IV.MA9.HHZ. 2009-07-13T00:35:42.15 10.0 undecidable manual Pg 0 0 0
IV.GIUL.HHZ. 2009-07-13T00:35:42.61 10.0 undecidable manual Pg 0 0 0
IV.LAV9.SHZ. 2009-07-13T00:35:42.50 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHE. 2009-07-13T00:35:41.64 0.3 undecidable manual Sg 129 55.4001 -0.005 71
IV.ASSB.HHN. 2009-07-13T00:35:40.86 0.3 undecidable manual Pg 324 98.8233 -0.112 64
IV.RMP.HHE. 2009-07-13T00:35:39.34 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHE. 2009-07-13T00:35:38.62 0.3 undecidable manual Pg 333 84.6486 -0.158 65
IV.FDMO.HHE. 2009-07-13T00:35:37.95 0.3 undecidable manual Pg 343 82.1511 -0.455 61
IV.CESX.HHZ. 2009-07-13T00:35:37.41 0.3 undecidable manual Pg 296 72.7716 0.454 62
IV.VCEL.EHZ. 2009-07-13T00:35:37.19 0.1 undecidable manual Sg 79 38.2284 0.142 94
IV.SDI.SHZ. 2009-07-13T00:35:37.63 0.3 undecidable manual Pg 153 77.0673 0.009 68
IV.OFFI.HHZ. 2009-07-13T00:35:37.12 0.3 undecidable manual Pg 20 71.6727 0.334 64
IV.TERO.HHZ. 2009-07-13T00:35:37.20 0.3 undecidable manual Sg 29 37.3293 0.383 67
IV.LNSS.HHZ. 2009-07-13T00:35:37.12 0.3 undecidable manual Sg 317 41.4252 -0.791 58
IV.POFI.HHN. 2009-07-13T00:35:37.42 0.3 undecidable manual Pg 158 72.9714 0.436 62
IV.VVLD.HHE. 2009-07-13T00:35:36.06 10.0 undecidable manual Pg 0 0 0
IV.SAN2.EHZ. 2009-07-13T00:35:36.02 0.1 undecidable manual Sg 346 34.5432 -0.054 97
IV.GUAR.HHZ. 2009-07-13T00:35:36.43 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHZ. 2009-07-13T00:35:35.33 0.1 undecidable manual Pg 237 62.6928 -0.065 92
IV.PTQR.SHZ. 2009-07-13T00:35:35.65 0.3 undecidable manual Sg 178 34.0437 -0.282 69
IV.MNS.HHE. 2009-07-13T00:35:34.39 0.3 undecidable manual Pg 277 57.8976 -0.274 66
IV.NRCA.SHZ. 2009-07-13T00:35:34.66 0.3 undecidable manual Pg 339 60.1953 -0.357 65
IV.INTR.HHE. 2009-07-13T00:35:34.27 0.3 undecidable manual Pg 129 55.4001 -0.008 71
IV.CERT.HHN. 2009-07-13T00:35:33.92 0.1 undecidable manual Pg 218 53.502 -0.061 93
IV.LNSS.HHZ. 2009-07-13T00:35:32.54 0.3 undecidable manual Pg 317 41.4252 0.418 66
IV.FIAM.HHZ. 2009-07-13T00:35:32.92 0.1 undecidable manual Sg 253 22.8549 0.018 99
IV.VCEL.EHZ. 2009-07-13T00:35:31.37 0.1 undecidable manual Pg 79 38.2284 -0.254 92
IV.TERO.HHZ. 2009-07-13T00:35:30.90 0.1 undecidable manual Pg 29 37.3293 -0.591 85
IV.SAN2.EHZ. 2009-07-13T00:35:30.95 0.1 undecidable manual Pg 346 34.5432 -0.112 96
IV.PTQR.SHZ. 2009-07-13T00:35:30.97 0.1 undecidable manual Pg 178 34.0437 -0.009 98
IV.FIAM.HHZ. 2009-07-13T00:35:29.37 0.1 undecidable manual Pg 253 22.8549 0.14 97
IV.T0104.EHZ. 2009-07-13T00:35:28.05 0.1 undecidable manual Sg 313 5.0949 -0.14 100
MN.AQU.HHN. 2009-07-13T00:35:27.73 0.1 undecidable manual Sg 28 3.1968 -0.215 99
MN.AQU.HHN. 2009-07-13T00:35:26.53 0.1 undecidable manual Pg 28 3.1968 0.162 100
IV.T0104.EHZ. 2009-07-13T00:35:26.75 0.1 undecidable manual Pg 313 5.0949 0.241 98
IV.SENI.EHN. 2009-07-13T00:35:02.34 10.0 undecidable manual Pg 0 0 0
BA.PZUN.HHZ. 2009-07-13T00:35:01.48 10.0 undecidable manual Pg 0 0 0
IV.CDCA.EHE. 2009-07-13T00:34:51.90 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