Earthquake with magnitude of Md 2.3 on date 11-04-2004 and time 08:09:52 (Italy) in region 4 km S Amatrice (RI)

A magnitude Md 2.3 earthquake occured in region: 4 km S Amatrice (RI), on

  • 11-04-2004 06:09:52 (UTC)
  • 11-04-2004 08:09:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5920, 13.2880 at 5 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 4 2657 2657
Campotosto AQ 8 542 3199
Capitignano AQ 8 665 3864
Montereale AQ 8 2581 6445
Cittareale RI 11 482 6927
Accumoli RI 12 667 7594
Borbona RI 15 617 8211
Cagnano Amiterno AQ 16 1369 9580
Barete AQ 16 737 10317
Crognaleto TE 16 1297 11614
Pizzoli AQ 17 4326 15940
Posta RI 17 694 16634
Cortino TE 18 656 17290

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of L'Aquila (69753 inhabitants)
35 Km W of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Chieti (51815 inhabitants)
77 Km W of Pescara (121014 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
93 Km SE of Perugia (166134 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
Md 2.3 2004-04-11
06:09:52
42.592 13.288 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 496269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2004-04-11 06:09:52 ± 0.135
Latitude 42.5920 ± 0.0074
Longitude 13.2880 ± 0.0193
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 496269

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1785.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.01044
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 496269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:54:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 2004-04-11T06:10:26.39 10.0 undecidable manual SG 344 0.9324 0.53 0.1
--.SNTG.Z. 2004-04-11T06:10:18.75 10.0 undecidable manual SG 339 0.6993 0.3 0.5
--.ASS.Z. 2004-04-11T06:10:16.66 10.0 undecidable manual SG 315 0.6549 -0.25 0.6
--.FSSB.Z. 2004-04-11T06:10:15.67 10.0 undecidable manual PN 341 1.1544 0.11 1.5
--.MNS.Z. 2004-04-11T06:10:12.13 10.0 undecidable manual SG 245 0.4884 0.65 0.1
--.ARV.Z. 2004-04-11T06:10:11.69 10.0 undecidable manual PG 344 0.9324 -0.19 1.5
--.SNTG.Z. 2004-04-11T06:10:07.45 10.0 undecidable manual PG 339 0.6993 -0.15 1.9
--.ASS.Z. 2004-04-11T06:10:06.61 10.0 undecidable manual PG 315 0.6549 -0.11 2
--.MNS.Z. 2004-04-11T06:10:03.26 10.0 undecidable manual PG 245 0.4884 -0.32 1.2
--.AQU.Z. 2004-04-11T06:10:02.27 10.0 undecidable manual SG 160 0.2553 -0.36 0.4
--.AQU.Z. 2004-04-11T06:09:58.77 10.0 undecidable manual PG 160 0.2553 0.3 1.3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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