Earthquake 6 km W L'Aquila (AQ), Magnitude ML 2.0, 11 April 2009 time 09:57:23 (Timezone UTC)

A magnitude ML 2.0 earthquake occured in region: 6 km W L'Aquila (AQ), on

11-04-2009 09:57:23 (UTC)
11-04-2009 11:57:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3700, 13.3340 at 9 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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Display location by

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).

Municipality	Region	Distance (km)	Inhabitants	Cumulative Inhabitants
L'Aquila	AQ	6	69753	69753
Scoppito	AQ	6	3727	73480
Pizzoli	AQ	8	4326	77806
Lucoli	AQ	9	1011	78817
Tornimparte	AQ	9	3187	82004
Barete	AQ	10	737	82741
Cagnano Amiterno	AQ	13	1369	84110
Ocre	AQ	15	1167	85277
Fossa	AQ	15	721	85998
Capitignano	AQ	17	665	86663
Poggio Picenze	AQ	18	1136	87799
Sant'Eusanio Forconese	AQ	18	394	88193
Montereale	AQ	19	2581	90774
Rocca di Cambio	AQ	20	533	91307

Municipalities with at least 50000 inhabitants

An earthquake occurred to

6 Km W of L'Aquila (69753 inhabitants)

44 Km SW of Teramo (54892 inhabitants)

60 Km E of Terni (111501 inhabitants)

63 Km NE of Tivoli (56533 inhabitants)

65 Km NE of Guidonia Montecelio (88673 inhabitants)

69 Km W of Chieti (51815 inhabitants)

69 Km W of Montesilvano (53738 inhabitants)

73 Km W of Pescara (121014 inhabitants)

83 Km SE of Foligno (57155 inhabitants)

88 Km NE of Roma (2864731 inhabitants)

89 Km NE of Velletri (53303 inhabitants)

Recent and historical seismicity

Not available maps for this sismic event.

Seismic hazard

Not available maps for this sismic event.

Shakemap

Not available maps for this sismic event.

Felt maps

Not available maps for this sismic event.

Locations history

Type	Magnitude	Date and Time (UTC)	Latitude	Longitude	Depth (km)	Published time (UTC)	Author	Location ID
Bulletin Rev1000	ML 2.0	2009-04-11 09:57:23	42.37	13.334	9	2014-10-21 12:27:13	Bollettino Sismico Italiano INGV	789919

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2009-04-11 09:57:23 ± 0.1
Latitude	42.3700 ± 0.0054
Longitude	13.3340 ± 0.0073
Depth (km)	9 ± 1 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	1000 -> BULLETIN-SISPICK
Event type	earthquake
Origin ID	789919

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	568
Semi-minor axis of confidence ellipse (meter)	481
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	194
Circular confidence region, given by single value of horizontal uncertainty (meter)	848.5
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	48
Number of associated phases, regardless of their use for origin computation	44
Number of defining phases	28
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.53
Epicentral distance of station closest to the epicenter (degree)	0.00000
Epicentral distance of station farthest from the epicenter (degree)	0.70777
Number of stations at which the event was observed	31
Number of stations from which data was used for origin computation	17

Magnitude information

ML:2.0

Field	Value
Value	2.0
Uncertainty	0.3
Num. used stations
Type of magnitude	ML
Reference to an origin	789919
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2013-01-05 14:57:30

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Residual	Weight
IV.STR3.BHN.	2009-04-11T09:58:23.28	10.0	undecidable	manual	Pg	0		0	0
IV.MURB.HHN.	2009-04-11T09:58:00.92	10.0	undecidable	manual	Sg	0		0	0
IV.LAV9.SHZ.	2009-04-11T09:58:00.96	10.0	undecidable	manual	Pg	0		0	0
IV.SNTG.SHZ.	2009-04-11T09:57:59.11	10.0	undecidable	manual	Pg	0		0	0
IV.CING.HHZ.	2009-04-11T09:57:58.04	10.0	undecidable	manual	Sg	0		0	0
IV.CERA.HHN.	2009-04-11T09:57:55.11	10.0	undecidable	manual	Pg	0		0	0
IV.POFI.HHN.	2009-04-11T09:57:51.27	10.0	undecidable	manual	Pg	0		0	0
IV.MGAB.HHE.	2009-04-11T09:57:50.54	10.0	undecidable	manual	Pg	0		0	0
IV.MURB.HHN.	2009-04-11T09:57:48.81	10.0	undecidable	manual	Pg	0		0	0
IV.CING.HHZ.	2009-04-11T09:57:48.65	10.0	undecidable	manual	Pg	0		0	0
IV.CESI.HHE.	2009-04-11T09:57:47.99	0.6	undecidable	manual	Sg	334	78.5658	0.954	33
IV.LPEL.HHZ.	2009-04-11T09:57:47.73	0.3	undecidable	manual	Sg	117	78.4659	0.722	55
IV.GUAR.HHE.	2009-04-11T09:57:43.02	10.0	undecidable	manual	Pg	0		0	0
IV.GIUL.HHE.	2009-04-11T09:57:42.00	10.0	undecidable	manual	Pg	0		0	0
IV.SDI.SHZ.	2009-04-11T09:57:41.81	10.0	undecidable	manual	Pg	0		0	0
IV.NRCA.SHZ.	2009-04-11T09:57:40.72	10.0	undecidable	manual	Pg	0		0	0
IV.CERT.HHE.	2009-04-11T09:57:40.70	0.3	undecidable	manual	Sg	212	55.0005	-0.029	70
IV.FSSB.HHE.	2009-04-11T09:57:38.84	10.0	undecidable	manual	Pg	0		0	0
IV.CESI.HHE.	2009-04-11T09:57:37.68	0.3	undecidable	manual	Pg	334	78.5658	0.732	55
IV.VCEL.EHN.	2009-04-11T09:57:37.63	0.1	undecidable	manual	Sg	86	41.625	0.462	87
IV.FDMO.HHZ.	2009-04-11T09:57:37.12	0.6	undecidable	manual	Pg	345	76.5678	0.486	40
IV.PTQR.SHZ.	2009-04-11T09:57:36.21	0.1	undecidable	manual	Sg	172	39.0276	-0.267	91
IV.LPEL.HHZ.	2009-04-11T09:57:36.74	0.3	undecidable	manual	Pg	117	78.4659	-0.195	64
IV.OFFI.HHZ.	2009-04-11T09:57:36.18	0.3	undecidable	manual	Pg	25	68.8755	0.726	56
IV.LNSS.HHE.	2009-04-11T09:57:35.59	0.1	undecidable	manual	Sg	317	35.2425	0.134	94
IV.INTR.HHZ.	2009-04-11T09:57:34.20	0.3	undecidable	manual	Pg	130	61.5939	-0.12	67
IV.CESX.HHN.	2009-04-11T09:57:34.71	0.3	undecidable	manual	Pg	294	67.0773	-0.469	62
IV.VVLD.HHE.	2009-04-11T09:57:34.45	0.6	undecidable	manual	Pg	157	60.495	0.299	43
IV.TERO.HHZ.	2009-04-11T09:57:34.33	0.1	undecidable	manual	Sg	38	35.6421	-1.25	62
IV.CERT.HHE.	2009-04-11T09:57:32.94	0.3	undecidable	manual	Pg	212	55.0005	-0.365	65
IV.MNS.HHZ.	2009-04-11T09:57:32.96	0.3	undecidable	manual	Pg	272	53.502	-0.119	68
IV.VCEL.EHN.	2009-04-11T09:57:32.08	0.3	undecidable	manual	Pg	86	41.625	0.827	57
IV.FIAM.HHZ.	2009-04-11T09:57:31.21	0.1	undecidable	manual	Sg	237	21.0678	0.072	98
IV.FAGN.HHE.	2009-04-11T09:57:31.88	0.1	undecidable	manual	Sg	119	23.5542	-0.065	97
IV.CAMP.HHZ.	2009-04-11T09:57:30.48	0.1	undecidable	manual	Sg	19	19.3695	-0.116	97
IV.PTQR.SHZ.	2009-04-11T09:57:30.51	0.1	undecidable	manual	Pg	172	39.0276	-0.341	89
IV.TERO.HHZ.	2009-04-11T09:57:29.53	0.1	positive	manual	Pg	38	35.6421	-0.802	77
IV.LNSS.HHE.	2009-04-11T09:57:29.99	0.3	undecidable	manual	Pg	317	35.2425	-0.274	69
IV.FAGN.HHE.	2009-04-11T09:57:28.28	0.3	undecidable	manual	Pg	119	23.5542	0.046	73
IV.CAMP.HHZ.	2009-04-11T09:57:27.38	0.1	positive	manual	Pg	19	19.3695	-0.078	98
IV.FIAM.HHZ.	2009-04-11T09:57:27.99	0.1	positive	manual	Pg	237	21.0678	0.218	95
MN.AQU.HHZ.	2009-04-11T09:57:26.86	0.1	undecidable	manual	Sg	108	5.8941	-0.083	100
MN.AQU.HHZ.	2009-04-11T09:57:25.52	0.1	positive	manual	Pg	108	5.8941	0.172	98
IV.SACR.HHE.	2009-04-11T09:57:04.48	10.0	undecidable	manual	Pg	0		0	0

TDMT - Time Domain Moment Tensor

Not available TDMT solution for this seismic event.

Fault Plane solutions in the area

Not available maps for this sismic event.

Download

Type	Description	Link
QuakeML - small	Event, Origin, FocalMechanism	Download
QuakeML - full	Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude	Download
Waveforms	Seismic signals in miniseed + resp format	Download

Earthquake with magnitude of ML 2.0 on date 11-04-2009 and time 09:57:23 (UTC) in region 6 km W L'Aquila (AQ)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:2.0