Earthquake 5 km S L'Aquila (AQ), Magnitude ML 2.0, 7 April 2009 time 18:39:23 (Timezone Italy)

A magnitude ML 2.0 earthquake occured in region: 5 km S L'Aquila (AQ), on

07-04-2009 16:39:23 (UTC)
07-04-2009 18:39:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3090, 13.4100 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	5	69753	69753
Ocre	AQ	6	1167	70920
Lucoli	AQ	6	1011	71931
Fossa	AQ	7	721	72652
Tornimparte	AQ	9	3187	75839
Sant'Eusanio Forconese	AQ	10	394	76233
Rocca di Cambio	AQ	10	533	76766
Poggio Picenze	AQ	11	1136	77902
Villa Sant'Angelo	AQ	11	424	78326
San Demetrio ne' Vestini	AQ	13	1854	80180
Rocca di Mezzo	AQ	14	1526	81706
Scoppito	AQ	14	3727	85433
Fagnano Alto	AQ	15	418	85851
Barisciano	AQ	15	1828	87679
Prata d'Ansidonia	AQ	17	496	88175
Pizzoli	AQ	17	4326	92501
Fontecchio	AQ	18	369	92870
Barete	AQ	19	737	93607
Borgorose	RI	19	4591	98198
Santo Stefano di Sessanio	AQ	20	111	98309

Municipalities with at least 50000 inhabitants

An earthquake occurred to

5 Km S of L'Aquila (69753 inhabitants)

46 Km SW of Teramo (54892 inhabitants)

63 Km W of Chieti (51815 inhabitants)

63 Km NE of Tivoli (56533 inhabitants)

65 Km W of Montesilvano (53738 inhabitants)

66 Km NE of Guidonia Montecelio (88673 inhabitants)

68 Km W of Pescara (121014 inhabitants)

69 Km E of Terni (111501 inhabitants)

87 Km NE of Velletri (53303 inhabitants)

89 Km NE of Roma (2864731 inhabitants)

92 Km SE of Foligno (57155 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	Md 2.1 ML 2.0	2009-04-07 16:39:23	42.309	13.41	9	2014-10-21 12:27:13	Bollettino Sismico Italiano INGV	768089

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2009-04-07 16:39:23 ± 0.07
Latitude	42.3090 ± 0.0036
Longitude	13.4100 ± 0.0049
Depth (km)	9 ± 0 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	1000 -> BULLETIN-SISPICK
Event type	earthquake
Origin ID	768089

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	476
Semi-minor axis of confidence ellipse (meter)	313
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)	565.7
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	58
Number of associated phases, regardless of their use for origin computation	33
Number of defining phases	23
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.31
Epicentral distance of station closest to the epicenter (degree)	0.00000
Epicentral distance of station farthest from the epicenter (degree)	0.56747
Number of stations at which the event was observed	21
Number of stations from which data was used for origin computation	12

Magnitudes information

ML:2.0

Field	Value
Value	2.0
Uncertainty	0.3
Num. used stations
Type of magnitude	ML
Reference to an origin	768089
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2013-01-05 14:31:50

Md:2.1

Field	Value
Value	2.1
Uncertainty	0.2
Num. used stations
Type of magnitude	Md
Reference to an origin	768089
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2013-01-05 14:31:50

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Residual	Weight
IV.STR3.BHN.	2009-04-07T16:39:55.68	10.0	undecidable	manual	Pg	0		0	0
IV.CESI.HHE.	2009-04-07T16:39:50.68	10.0	undecidable	manual	Pg	0		0	0
IV.OFFI.HHN.	2009-04-07T16:39:48.52	10.0	undecidable	manual	Pg	0		0	0
IV.SDI.SHZ.	2009-04-07T16:39:45.96	10.0	undecidable	manual	Sg	0		0	0
IV.NRCA.SHZ.	2009-04-07T16:39:42.94	0.6	undecidable	manual	Sg	338	62.9925	0.241	46
IV.GIUL.HHE.	2009-04-07T16:39:41.88	10.0	undecidable	manual	Pg	0		0	0
IV.MNS.HHN.	2009-04-07T16:39:41.81	10.0	undecidable	manual	Pg	0		0	0
IV.CERT.HHN.	2009-04-07T16:39:40.48	0.6	undecidable	manual	Sg	222	53.2023	0.384	45
IV.INTR.HHN.	2009-04-07T16:39:39.91	0.6	undecidable	manual	Sg	129	52.4031	0.053	48
IV.LNSS.HHE.	2009-04-07T16:39:37.78	0.3	undecidable	manual	Sg	317	44.5221	0.026	74
IV.TERO.HHZ.	2009-04-07T16:39:36.46	0.3	undecidable	manual	Sg	24	38.2284	0.369	70
IV.SDI.SHZ.	2009-04-07T16:39:36.33	10.0	undecidable	manual	Pg	0		0	0
IV.GUAR.HHE.	2009-04-07T16:39:36.95	10.0	undecidable	manual	Pg	0		0	0
IV.VCEL.EHZ.	2009-04-07T16:39:35.65	0.6	undecidable	manual	Sg	75	36.5412	0.014	50
IV.NRCA.SHZ.	2009-04-07T16:39:34.13	0.3	undecidable	manual	Pg	338	62.9925	-0.26	68
IV.PTQR.SHZ.	2009-04-07T16:39:34.06	0.3	undecidable	manual	Sg	181	31.8459	-0.324	71
IV.CERT.HHN.	2009-04-07T16:39:32.72	0.3	undecidable	manual	Pg	222	53.2023	-0.167	71
IV.VVLD.HHZ.	2009-04-07T16:39:32.38	0.3	undecidable	manual	Pg	160	51.8037	-0.281	69
IV.FIAM.HHZ.	2009-04-07T16:39:32.15	0.3	undecidable	manual	Sg	259	24.4533	0.027	76
IV.INTR.HHN.	2009-04-07T16:39:32.59	0.1	undecidable	manual	Pg	129	52.4031	-0.158	94
IV.CAMP.HHZ.	2009-04-07T16:39:31.57	0.3	undecidable	manual	Sg	360	25.1526	-0.777	62
IV.LNSS.HHE.	2009-04-07T16:39:31.99	0.3	undecidable	manual	Pg	317	44.5221	0.454	67
IV.TERO.HHZ.	2009-04-07T16:39:30.35	0.3	undecidable	manual	Pg	24	38.2284	-0.222	72
IV.VCEL.EHZ.	2009-04-07T16:39:30.55	0.1	undecidable	manual	Pg	75	36.5412	0.241	96
IV.FAGN.HHZ.	2009-04-07T16:39:29.25	0.6	undecidable	manual	Sg	109	15.0738	0.074	51
IV.PTQR.SHZ.	2009-04-07T16:39:29.45	0.1	undecidable	manual	Pg	181	31.8459	-0.137	98
IV.CAMP.HHZ.	2009-04-07T16:39:28.18	0.1	undecidable	manual	Pg	360	25.1526	-0.232	98
IV.FIAM.HHZ.	2009-04-07T16:39:28.43	0.3	undecidable	manual	Pg	259	24.4533	0.149	75
MN.AQU.HHZ.	2009-04-07T16:39:26.75	0.3	undecidable	manual	Sg	352	4.995	0.037	79
IV.FAGN.HHZ.	2009-04-07T16:39:26.84	0.1	undecidable	manual	Pg	109	15.0738	0.259	99
MN.AQU.HHZ.	2009-04-07T16:39:25.44	0.1	undecidable	manual	Pg	352	4.995	0.283	100
IV.PZZT.HHN.	2009-04-07T16:39:25.53	10.0	undecidable	manual	Pg	0		0	0
SI.ROSI.BHE.	2009-04-07T16:39:22.45	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 07-04-2009 and time 18:39:23 (Italy) in region 5 km S L'Aquila (AQ)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:2.0

Md:2.1