Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 04-04-2009 and time 15:32:19 (Italy) in region 5 km NE Antrodoco (RI)

A magnitude ML 1.5 earthquake occured in region: 5 km NE Antrodoco (RI), on

  • 04-04-2009 13:32:19 (UTC)
  • 04-04-2009 15:32:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4470, 13.1280 at 2 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
Antrodoco RI 5 2588 2588
Micigliano RI 6 127 2715
Borgo Velino RI 7 972 3687
Borbona RI 7 617 4304
Cagnano Amiterno AQ 8 1369 5673
Posta RI 9 694 6367
Castel Sant'Angelo RI 10 1308 7675
Barete AQ 13 737 8412
Montereale AQ 13 2581 10993
Scoppito AQ 14 3727 14720
Pizzoli AQ 14 4326 19046
Cittaducale RI 16 6828 25874
Capitignano AQ 17 665 26539
Petrella Salto RI 18 1197 27736
Concerviano RI 18 291 28027
Leonessa RI 19 2435 30462
Cantalice RI 19 2755 33217
Cittareale RI 19 482 33699

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km W of L'Aquila (69753 inhabitants)
41 Km E of Terni (111501 inhabitants)
53 Km W of Teramo (54892 inhabitants)
60 Km NE of Guidonia Montecelio (88673 inhabitants)
60 Km NE of Tivoli (56533 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
81 Km NE of Roma (2864731 inhabitants)
84 Km E of Viterbo (67173 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
86 Km W of Chieti (51815 inhabitants)
89 Km W of Pescara (121014 inhabitants)
89 Km NE of Velletri (53303 inhabitants)
95 Km SE of Perugia (166134 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 2.0
ML 1.5 		2009-04-04
13:32:19		 42.447 13.128 2 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 754759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-04 13:32:19 ± 0.12
Latitude 42.4470 ± 0.0063
Longitude 13.1280 ± 0.0085
Depth (km) 2 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 754759

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 699
Semi-minor axis of confidence ellipse (meter) 465
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 288
Circular confidence region, given by single value of horizontal uncertainty (meter) 989.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58996
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 754759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:16:15

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 754759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:16:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHN. 2009-04-04T13:32:41.39 0.3 undecidable manual Sg 344 64.491 0.056 73
IV.FDMO.HHN. 2009-04-04T13:32:41.61 0.3 undecidable manual Sg 357 65.49 0.015 74
IV.CIGN.HHZ. 2009-04-04T13:32:37.93 10.0 undecidable manual Pg 0 0 0
IV.FAGN.HHE. 2009-04-04T13:32:36.87 10.0 undecidable manual Sg 0 0 0
IV.NRCA.HHE. 2009-04-04T13:32:35.16 0.3 undecidable manual Sg 359 42.9237 0.616 66
IV.TERO.HHZ. 2009-04-04T13:32:34.35 0.1 undecidable manual Sg 63 43.5231 -0.419 94
IV.FDMO.HHN. 2009-04-04T13:32:32.01 0.1 undecidable manual Pg 357 65.49 -0.308 93
IV.FAGN.HHE. 2009-04-04T13:32:32.16 10.0 undecidable manual Pg 0 0 0
IV.MNS.HHZ. 2009-04-04T13:32:32.11 0.3 undecidable manual Sg 260 37.2294 -0.47 71
IV.CESI.HHN. 2009-04-04T13:32:32.20 0.1 undecidable manual Pg 344 64.491 0.03 98
IV.VCEL.EHN. 2009-04-04T13:32:31.55 0.3 undecidable manual Pg 95 58.6968 0.278 71
MN.AQU.HHZ. 2009-04-04T13:32:28.36 10.0 undecidable manual Sg 0 0 0
IV.NRCA.HHE. 2009-04-04T13:32:28.65 0.3 undecidable manual Pg 359 42.9237 0.399 71
IV.TERO.HHZ. 2009-04-04T13:32:28.12 0.1 undecidable manual Pg 63 43.5231 -0.259 97
IV.FIAM.HHZ. 2009-04-04T13:32:26.74 0.3 undecidable manual Sg 182 19.869 0.155 78
IV.MNS.HHZ. 2009-04-04T13:32:26.93 0.1 undecidable manual Pg 260 37.2294 -0.185 100
IV.FIAM.HHZ. 2009-04-04T13:32:24.01 0.1 undecidable manual Pg 182 19.869 0.359 99
IV.LATE.HHZ. 2009-04-04T13:32:24.01 10.0 undecidable manual Pg 0 0 0
MN.AQU.HHZ. 2009-04-04T13:32:23.91 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