Earthquake with magnitude of Md 2.3 on date 09-04-2004 and time 22:00:48 (Italy) in region 4 km NW Visso (MC)

A magnitude Md 2.3 earthquake occured in region: 4 km NW Visso (MC), on

  • 09-04-2004 20:00:48 (UTC)
  • 09-04-2004 22:00:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9610, 13.0610 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Visso MC 4 1107 1107
Monte Cavallo MC 6 145 1252
Ussita MC 7 444 1696
Fiordimonte MC 9 202 1898
Preci PG 9 724 2622
Pieve Torina MC 9 1458 4080
Castelsantangelo sul Nera MC 11 281 4361
Fiastra MC 12 559 4920
Pievebovigliana MC 12 866 5786
Acquacanina MC 12 121 5907
Sellano PG 13 1079 6986
Muccia MC 14 915 7901
Bolognola MC 14 142 8043
Serravalle di Chienti MC 15 1070 9113
Norcia PG 19 4957 14070
Cerreto di Spoleto PG 20 1075 15145
Camerino MC 20 6974 22119

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
56 Km NE of Terni (111501 inhabitants)
57 Km E of Perugia (166134 inhabitants)
62 Km NW of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
98 Km S of Fano (60888 inhabitants)
99 Km NE 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 2004-04-09
20:00:48
42.961 13.061 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 496189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2004-04-09 20:00:48 ± 0.194
Latitude 42.9610 ± 0.0067
Longitude 13.0610 ± 0.0201
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 496189

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) 1796.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 214
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.00680
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 496189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:53:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FSSB.Z. 2004-04-09T20:01:15.25 10.0 undecidable manual SG 344 0.7548 0.43 0.2
--.MNS.Z. 2004-04-09T20:01:11.46 10.0 undecidable manual SG 205 0.6327 0.46 0.1
--.ARV.Z. 2004-04-09T20:01:08.48 10.0 undecidable manual SG 350 0.5439 0.55 0.1
--.FSSB.Z. 2004-04-09T20:01:03.43 10.0 undecidable manual PG 344 0.7548 -0.28 0.9
--.MNS.Z. 2004-04-09T20:01:01.37 10.0 undecidable manual PG 205 0.6327 -0.13 1.6
--.SNTG.Z. 2004-04-09T20:01:00.20 10.0 undecidable manual SG 343 0.3108 -0.09 0.8
--.ASS.Z. 2004-04-09T20:01:00.28 10.0 undecidable manual SG 288 0.3108 -0.3 0.4
--.ARV.Z. 2004-04-09T20:00:59.56 10.0 undecidable manual PG 350 0.5439 -0.16 1.7
--.SNTG.Z. 2004-04-09T20:00:55.36 10.0 undecidable manual PG 343 0.3108 0.04 2.1
--.ASS.Z. 2004-04-09T20:00:55.49 10.0 undecidable manual PG 288 0.3108 0.01 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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