Earthquake with magnitude of ML 1.9 on date 07-02-2009 and time 03:31:58 (Italy) in region 4 km W L'Aquila (AQ)

A magnitude ML 1.9 earthquake occured in region: 4 km W L'Aquila (AQ), on

  • 07-02-2009 02:31:58 (UTC)
  • 07-02-2009 03:31:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3610, 13.3560 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.

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
Lucoli AQ 8 1011 70764
Scoppito AQ 8 3727 74491
Tornimparte AQ 9 3187 77678
Pizzoli AQ 10 4326 82004
Barete AQ 12 737 82741
Ocre AQ 13 1167 83908
Fossa AQ 13 721 84629
Cagnano Amiterno AQ 15 1369 85998
Poggio Picenze AQ 16 1136 87134
Sant'Eusanio Forconese AQ 16 394 87528
Rocca di Cambio AQ 18 533 88061
Villa Sant'Angelo AQ 18 424 88485
Capitignano AQ 18 665 89150
San Demetrio ne' Vestini AQ 19 1854 91004
Barisciano AQ 20 1828 92832

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km W of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
62 Km E of Terni (111501 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
67 Km W of Chieti (51815 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
71 Km W of Pescara (121014 inhabitants)
85 Km SE of Foligno (57155 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
89 Km NE of Velletri (53303 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 2.1
ML 1.9
2009-02-07
02:31:58
42.361 13.356 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 742649
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-02-07 02:31:58 ± 0.09
Latitude 42.3610 ± 0.0045
Longitude 13.3560 ± 0.0073
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 742649

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 610
Semi-minor axis of confidence ellipse (meter) 439
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 781.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.73295
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 742649
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:02:43

Md:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 742649
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:02:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LPEL.HHE. 2009-02-07T02:32:21.40 0.3 undecidable manual Sg 117 76.368 0.259 65
IV.FDMO.HHN. 2009-02-07T02:32:21.86 0.1 undecidable manual Sg 344 78.0663 0.29 85
IV.CERT.HHN. 2009-02-07T02:32:15.49 0.3 undecidable manual Sg 214 55.1004 0.026 71
IV.NRCA.HHN. 2009-02-07T02:32:15.75 0.3 undecidable manual Sg 339 55.9995 0.066 70
IV.SDI.SHZ. 2009-02-07T02:32:13.41 0.1 undecidable manual Pg 152 81.3519 1.255 58
IV.VCEL.EHE. 2009-02-07T02:32:12.03 0.1 undecidable manual Sg 85 39.8268 0.641 83
IV.LPEL.HHE. 2009-02-07T02:32:11.13 0.1 undecidable manual Pg 117 76.368 -0.255 86
IV.FDMO.HHN. 2009-02-07T02:32:11.72 0.1 undecidable manual Pg 344 78.0663 0.087 89
IV.PTQR.SHZ. 2009-02-07T02:32:10.29 0.1 undecidable manual Sg 174 37.8288 -0.557 86
IV.TERO.HHZ. 2009-02-07T02:32:09.36 0.1 undecidable manual Sg 35 35.3424 -0.828 77
IV.NRCA.HHN. 2009-02-07T02:32:08.10 0.1 undecidable manual Pg 339 55.9995 -0.134 92
IV.VVLD.HHN. 2009-02-07T02:32:08.32 0.1 undecidable manual Pg 158 58.7967 -0.354 87
IV.CERT.HHN. 2009-02-07T02:32:07.96 0.1 undecidable manual Pg 214 55.1004 -0.148 92
IV.FAGN.HHN. 2009-02-07T02:32:06.27 0.1 undecidable manual Sg 120 21.4674 -0.018 100
IV.FIAM.HHZ. 2009-02-07T02:32:06.35 0.3 undecidable manual Sg 242 22.1556 -0.151 73
IV.VCEL.EHE. 2009-02-07T02:32:05.87 0.1 undecidable manual Pg 85 39.8268 0.115 95
IV.PTQR.SHZ. 2009-02-07T02:32:05.29 0.1 positive manual Pg 174 37.8288 -0.152 95
IV.LNSS.HHE. 2009-02-07T02:32:05.75 0.1 undecidable manual Pg 316 37.2294 0.408 90
IV.CAMP.HHZ. 2009-02-07T02:32:05.63 0.1 undecidable manual Sg 13 19.7691 -0.134 98
IV.TERO.HHZ. 2009-02-07T02:32:04.61 0.1 positive manual Pg 35 35.3424 -0.45 89
IV.FIAM.HHZ. 2009-02-07T02:32:03.15 0.1 positive manual Pg 242 22.1556 0.219 96
IV.CAMP.HHZ. 2009-02-07T02:32:02.58 0.1 positive manual Pg 13 19.7691 0.074 99
IV.FAGN.HHN. 2009-02-07T02:32:02.94 0.1 undecidable manual Pg 120 21.4674 0.132 98
MN.AQU.HHE. 2009-02-07T02:32:01.57 0.1 undecidable manual Sg 103 3.8961 -0.217 99
MN.AQU.HHE. 2009-02-07T02:32:00.44 0.1 negative manual Pg 103 3.8961 0.23 99
IV.MCRV.HHZ. 2009-02-07T02:31:42.68 10.0 undecidable manual Pg 0 0 0
IV.FSSB.HHN. 2009-02-07T02:31:41.22 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download