Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 06-04-2009 and time 20:10:22 (Italy) in region 3 km W Rocca di Mezzo (AQ)

A magnitude ML 2.0 earthquake occured in region: 3 km W Rocca di Mezzo (AQ), on

  • 06-04-2009 18:10:22 (UTC)
  • 06-04-2009 20:10:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.2020, 13.4790 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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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Rocca di Mezzo AQ 3 1526 1526
Rocca di Cambio AQ 4 533 2059
Ovindoli AQ 8 1227 3286
Villa Sant'Angelo AQ 9 424 3710
Ocre AQ 9 1167 4877
Fagnano Alto AQ 10 418 5295
Fossa AQ 10 721 6016
Sant'Eusanio Forconese AQ 11 394 6410
Fontecchio AQ 11 369 6779
San Demetrio ne' Vestini AQ 12 1854 8633
Massa d'Albe AQ 12 1476 10109
Tione degli Abruzzi AQ 13 310 10419
Prata d'Ansidonia AQ 14 496 10915
Celano AQ 14 11017 21932
Poggio Picenze AQ 14 1136 23068
Magliano de' Marsi AQ 15 3690 26758
Lucoli AQ 15 1011 27769
Aielli AQ 16 1475 29244
Barisciano AQ 17 1828 31072
Caporciano AQ 17 230 31302
San Pio delle Camere AQ 17 661 31963
Secinaro AQ 17 359 32322
Tornimparte AQ 18 3187 35509
L'Aquila AQ 18 69753 105262
Cerchio AQ 18 1635 106897
Scurcola Marsicana AQ 19 2824 109721
Avezzano AQ 19 42515 152236
Collarmele AQ 20 894 153130
Acciano AQ 20 327 153457

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km SE of L'Aquila (69753 inhabitants)
54 Km SW of Teramo (54892 inhabitants)
59 Km W of Chieti (51815 inhabitants)
62 Km E of Tivoli (56533 inhabitants)
65 Km SW of Montesilvano (53738 inhabitants)
66 Km E of Guidonia Montecelio (88673 inhabitants)
67 Km W of Pescara (121014 inhabitants)
79 Km SE of Terni (111501 inhabitants)
82 Km NE of Velletri (53303 inhabitants)
89 Km E of Roma (2864731 inhabitants)
94 Km NE of Latina (125985 inhabitants)
96 Km NE of Aprilia (73446 inhabitants)
100 Km NE of Pomezia (62966 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 1.4
ML 2.0 		2009-04-06
18:10:22		 42.202 13.479 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 761789
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-06 18:10:22 ± 0.16
Latitude 42.2020 ± 0.0081
Longitude 13.4790 ± 0.0134
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 761789

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1036
Semi-minor axis of confidence ellipse (meter) 719
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 113
Circular confidence region, given by single value of horizontal uncertainty (meter) 1421.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.58
Epicentral distance of station closest to the epicenter (degree) 0.10072
Epicentral distance of station farthest from the epicenter (degree) 0.36872
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 761789
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:24:27

Md:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 761789
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:24:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2009-04-06T18:10:36.12 0.6 undecidable manual Sg 121 40.9257 -0.001 50
IV.VCEL.EHE. 2009-04-06T18:10:35.28 0.3 undecidable manual Sg 54 36.5412 0.318 71
.CAMP.HHZ. 2009-04-06T18:10:35.18 0.1 undecidable manual Sg 351 37.4292 -0.027 100
.FIAM.---. 2009-04-06T18:10:32.52 0.3 undecidable manual Sg 284 30.6471 -0.855 59
.CAMP.HHZ. 2009-04-06T18:10:30.87 0.1 undecidable manual Pg 351 37.4292 1.104 70
IV.PTQR.SHZ. 2009-04-06T18:10:30.29 0.3 undecidable manual Sg 198 20.9679 -0.003 78
IV.INTR.HHZ. 2009-04-06T18:10:30.06 0.3 undecidable manual Pg 121 40.9257 -0.237 71
.AQU.HHZ. 2009-04-06T18:10:29.49 0.6 undecidable manual Sg 339 17.9709 0.134 51
IV.VCEL.EHE. 2009-04-06T18:10:29.44 0.1 undecidable manual Pg 54 36.5412 -0.185 97
.FIAM.---. 2009-04-06T18:10:28.37 0.3 undecidable manual Pg 284 30.6471 -0.338 71
IV.PTQR.SHZ. 2009-04-06T18:10:27.59 0.3 undecidable manual Pg 198 20.9679 0.661 66
IV.FAGN.HHN. 2009-04-06T18:10:26.82 0.3 undecidable manual Sg 51 11.1777 -0.535 70
.AQU.HHZ. 2009-04-06T18:10:26.94 0.6 undecidable manual Pg 339 17.9709 0.553 46
IV.FAGN.HHN. 2009-04-06T18:10:24.99 0.1 undecidable manual Pg 51 11.1777 -0.246 100
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
Waveforms Seismic signals in miniseed + resp format Download