Earthquake with magnitude of Md 2.0 on date 09-04-2004 and time 01:36:50 (UTC) in region 7 km W Monte Cavallo (MC)

A magnitude Md 2.0 earthquake occured in region: 7 km W Monte Cavallo (MC), on

  • 09-04-2004 01:36:50 (UTC)
  • 09-04-2004 03:36:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9830, 12.9230 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
Monte Cavallo MC 7 145 145
Serravalle di Chienti MC 10 1070 1215
Sellano PG 10 1079 2294
Pieve Torina MC 13 1458 3752
Visso MC 15 1107 4859
Preci PG 15 724 5583
Muccia MC 15 915 6498
Fiordimonte MC 15 202 6700
Pievebovigliana MC 16 866 7566
Valtopina PG 16 1398 8964
Nocera Umbra PG 18 5839 14803
Foligno PG 18 57155 71958
Ussita MC 18 444 72402
Cerreto di Spoleto PG 18 1075 73477
Sefro MC 18 422 73899
Trevi PG 18 8469 82368
Fiastra MC 20 559 82927

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
46 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
73 Km W of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
96 Km S of Fano (60888 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 2004-04-09
01:36:50
42.983 12.923 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 496149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2004-04-09 01:36:50 ± 0.145
Latitude 42.9830 ± 0.0090
Longitude 12.9230 ± 0.0168
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 496149

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) 1692.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00461
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 496149
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:53:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 2004-04-09T01:37:09.75 10.0 undecidable manual SG 1 0.5106 0.73 0
--.SNTG.Z. 2004-04-09T01:37:01.18 10.0 undecidable manual SG 2 0.2664 -0.02 0.8
--.ARV.Z. 2004-04-09T01:37:00.83 10.0 undecidable manual PG 1 0.5106 -0.39 0.7
--.NRCA.Z. 2004-04-09T01:36:59.29 10.0 undecidable manual SG 136 0.1998 0.25 0.6
--.ASS.Z. 2004-04-09T01:36:59.85 10.0 undecidable manual SG 291 0.2109 0.54 0.2
--.SNTG.Z. 2004-04-09T01:36:56.67 10.0 undecidable manual PG 2 0.2664 -0.03 2
--.ASS.Z. 2004-04-09T01:36:55.39 10.0 undecidable manual PG 291 0.2109 -0.22 1.6
--.NRCA.Z. 2004-04-09T01:36:55.48 10.0 undecidable manual PG 136 0.1998 0.03 2
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