Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 07-04-2009 and time 03:57:46 (Italy) in region 1 km E Rocca di Cambio (AQ)

A magnitude ML 1.8 earthquake occured in region: 1 km E Rocca di Cambio (AQ), on

  • 07-04-2009 01:57:46 (UTC)
  • 07-04-2009 03:57:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.2350, 13.4990 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
Rocca di Cambio AQ 1 533 533
Rocca di Mezzo AQ 3 1526 2059
Villa Sant'Angelo AQ 5 424 2483
Ocre AQ 6 1167 3650
Sant'Eusanio Forconese AQ 7 394 4044
Fossa AQ 7 721 4765
Fagnano Alto AQ 7 418 5183
San Demetrio ne' Vestini AQ 8 1854 7037
Fontecchio AQ 9 369 7406
Prata d'Ansidonia AQ 10 496 7902
Poggio Picenze AQ 10 1136 9038
Ovindoli AQ 11 1227 10265
Tione degli Abruzzi AQ 12 310 10575
Barisciano AQ 13 1828 12403
San Pio delle Camere AQ 14 661 13064
Caporciano AQ 14 230 13294
Lucoli AQ 15 1011 14305
L'Aquila AQ 15 69753 84058
Massa d'Albe AQ 16 1476 85534
Carapelle Calvisio AQ 17 87 85621
Celano AQ 17 11017 96638
Santo Stefano di Sessanio AQ 17 111 96749
Secinaro AQ 17 359 97108
Tornimparte AQ 18 3187 100295
Castelvecchio Calvisio AQ 18 153 100448
Aielli AQ 19 1475 101923
Navelli AQ 19 554 102477
Calascio AQ 19 137 102614
Magliano de' Marsi AQ 19 3690 106304
Acciano AQ 19 327 106631

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SE of L'Aquila (69753 inhabitants)
50 Km SW of Teramo (54892 inhabitants)
57 Km W of Chieti (51815 inhabitants)
62 Km SW of Montesilvano (53738 inhabitants)
64 Km W of Pescara (121014 inhabitants)
65 Km E of Tivoli (56533 inhabitants)
69 Km E of Guidonia Montecelio (88673 inhabitants)
79 Km E of Terni (111501 inhabitants)
85 Km NE of Velletri (53303 inhabitants)
92 Km E of Roma (2864731 inhabitants)
98 Km NE of Latina (125985 inhabitants)
100 Km NE of Aprilia (73446 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 1.9
ML 1.8 		2009-04-07
01:57:46		 42.235 13.499 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 764799
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-07 01:57:46 ± 0.12
Latitude 42.2350 ± 0.0063
Longitude 13.4990 ± 0.0097
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 764799

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 878
Semi-minor axis of confidence ellipse (meter) 458
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 306
Circular confidence region, given by single value of horizontal uncertainty (meter) 1063.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.62323
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 764799
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:27:58

Md:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 764799
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:27:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CDCA.EHE. 2009-04-07T01:58:07.36 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-04-07T01:58:06.62 0.3 undecidable manual Sg 156 63.6918 0.532 62
IV.INTR.HHN. 2009-04-07T01:58:00.20 0.1 undecidable manual Sg 127 41.625 0.012 97
IV.VVLD.HHZ. 2009-04-07T01:57:59.97 0.3 undecidable manual Sg 166 41.8248 -0.281 69
IV.MNS.HHE. 2009-04-07T01:57:58.54 0.3 undecidable manual Pg 284 69.1752 -0.028 69
IV.SDI.SHZ. 2009-04-07T01:57:57.18 0.6 undecidable manual Pg 156 63.6918 -0.55 41
IV.VCEL.EHZ. 2009-04-07T01:57:57.64 0.3 undecidable manual Sg 58 33.1446 -0.288 70
IV.PTQR.SHZ. 2009-04-07T01:57:55.58 0.3 undecidable manual Sg 199 25.0527 -0.038 74
IV.GUAR.HHE. 2009-04-07T01:57:55.71 0.3 undecidable manual Pg 198 51.3153 -0.104 70
IV.INTR.HHN. 2009-04-07T01:57:54.31 0.3 undecidable manual Pg 127 41.625 -0.014 72
IV.VVLD.HHZ. 2009-04-07T01:57:54.30 0.6 undecidable manual Pg 166 41.8248 -0.061 48
IV.VCEL.EHZ. 2009-04-07T01:57:53.54 0.3 undecidable manual Pg 58 33.1446 0.521 66
IV.PTQR.SHZ. 2009-04-07T01:57:51.82 0.3 undecidable manual Pg 199 25.0527 0.134 73
IV.FAGN.HHZ. 2009-04-07T01:57:50.47 0.1 undecidable manual Sg 64 7.7811 -0.14 100
IV.FAGN.HHZ. 2009-04-07T01:57:48.93 0.1 undecidable manual Pg 64 7.7811 0.136 100
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