Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 07-04-2009 and time 16:09:15 (UTC) in region 4 km S Pizzoli (AQ)

A magnitude ML 1.8 earthquake occured in region: 4 km S Pizzoli (AQ), on

  • 07-04-2009 16:09:15 (UTC)
  • 07-04-2009 18:09:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4000, 13.3070 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
Pizzoli AQ 4 4326 4326
Scoppito AQ 5 3727 8053
Barete AQ 6 737 8790
L'Aquila AQ 9 69753 78543
Cagnano Amiterno AQ 10 1369 79912
Tornimparte AQ 12 3187 83099
Lucoli AQ 12 1011 84110
Capitignano AQ 14 665 84775
Montereale AQ 15 2581 87356
Campotosto AQ 18 542 87898
Antrodoco RI 19 2588 90486
Ocre AQ 19 1167 91653
Borbona RI 19 617 92270
Fossa AQ 19 721 92991

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NW of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
57 Km E of Terni (111501 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
71 Km W of Chieti (51815 inhabitants)
75 Km W of Pescara (121014 inhabitants)
79 Km SE of Foligno (57155 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
91 Km NE of Velletri (53303 inhabitants)
99 Km E of Viterbo (67173 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 		ML 1.8 2009-04-07
16:09:15		 42.4 13.307 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 767939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-07 16:09:15 ± 0.12
Latitude 42.4000 ± 0.0072
Longitude 13.3070 ± 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 767939

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 759
Semi-minor axis of confidence ellipse (meter) 703
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 1131.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45596
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 767939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:31:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.SHZ. 2009-04-07T16:09:32.05 0.3 undecidable manual Sg 342 50.616 0.141 70
IV.TERO.HHZ. 2009-04-07T16:09:27.20 0.3 undecidable manual Sg 44 34.6431 -0.457 67
IV.LNSS.HHZ. 2009-04-07T16:09:26.63 0.3 undecidable manual Sg 316 31.3464 -0.138 72
IV.FAGN.HHZ. 2009-04-07T16:09:25.39 0.3 undecidable manual Sg 123 27.1506 -0.271 71
IV.NRCA.SHZ. 2009-04-07T16:09:24.93 0.6 undecidable manual Pg 342 50.616 -0.154 46
IV.VCEL.EHZ. 2009-04-07T16:09:24.93 0.6 undecidable manual Pg 91 43.7229 0.901 37
IV.FIAM.HHZ. 2009-04-07T16:09:23.75 0.3 undecidable manual Sg 227 21.3675 -0.225 72
IV.FAGN.HHZ. 2009-04-07T16:09:22.28 0.3 undecidable manual Pg 123 27.1506 0.805 59
IV.LNSS.HHZ. 2009-04-07T16:09:22.18 0.1 undecidable manual Pg 316 31.3464 0.065 98
IV.CAMP.HHZ. 2009-04-07T16:09:22.82 0.3 undecidable manual Sg 29 17.1717 0.119 74
IV.TERO.HHZ. 2009-04-07T16:09:22.28 0.1 undecidable manual Pg 44 34.6431 -0.346 91
IV.FIAM.HHZ. 2009-04-07T16:09:20.53 0.1 undecidable manual Pg 227 21.3675 0.029 100
IV.CAMP.HHZ. 2009-04-07T16:09:19.91 0.1 undecidable manual Pg 29 17.1717 0.143 98
MN.AQU.HHZ. 2009-04-07T16:09:19.93 0.3 undecidable manual Sg 123 9.3795 -0.628 66
MN.AQU.HHZ. 2009-04-07T16:09:18.88 0.1 undecidable manual Pg 123 9.3795 0.35 95
IV.OFFI.HHZ. 2009-04-07T16:09:06.07 10.0 undecidable manual Sg 0 0 0
IV.VVLD.HHE. 2009-04-07T16:09:02.40 10.0 undecidable manual Pg 0 0 0
IV.OFFI.HHZ. 2009-04-07T16:08:57.33 10.0 undecidable manual Pg 0 0 0
IV.MNS.HHZ. 2009-04-07T16:08:54.27 10.0 undecidable manual Pg 0 0 0
IV.PTQR.SHZ. 2009-04-07T16:08:49.27 10.0 undecidable manual Pg 0 0 0
IV.CRAC.EHN. 2009-04-07T16:08:46.88 10.0 undecidable manual Pg 0 0 0
IV.QLNO.HHN. 2009-04-07T16:08:30.03 10.0 undecidable manual Pg 0 0 0
GU.RORO.HHN. 2009-04-07T16:08:21.84 10.0 undecidable manual Pg 0 0 0
IV.IMI.HHN. 2009-04-07T16:08:17.10 10.0 undecidable manual Pg 0 0 0
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