Earthquake with magnitude of Md 2.1 on date 07-03-2004 and time 07:16:30 (Italy) in region N Norcia (PG)

A magnitude Md 2.1 earthquake occured in region: N Norcia (PG), on

  • 07-03-2004 06:16:30 (UTC)
  • 07-03-2004 07:16:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7970, 13.0930 at 16 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
Norcia PG 0 4957 4957
Preci PG 10 724 5681
Cascia PG 11 3217 8898
Castelsantangelo sul Nera MC 12 281 9179
Cerreto di Spoleto PG 15 1075 10254
Visso MC 15 1107 11361
Poggiodomo PG 16 117 11478
Ussita MC 17 444 11922
Arquata del Tronto AP 17 1178 13100
Sellano PG 17 1079 14179
Accumoli RI 17 667 14846
Vallo di Nera PG 19 364 15210
Monteleone di Spoleto PG 20 599 15809

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
99 Km W of Pescara (121014 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 2.1
ML-VAX 1.7
2004-03-07
06:16:30
42.797 13.093 16 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 494549
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2004-03-07 06:16:30 ± 0.086
Latitude 42.7970 ± 0.0071
Longitude 13.0930 ± 0.0084
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 494549

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) 1047.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 194
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.00421
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 494549
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:52:14

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 494549
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SNTG.Z. 2004-03-07T06:16:47.69 10.0 undecidable manual SG 346 0.4662 0.08 0.5
--.ASS.Z. 2004-03-07T06:16:46.30 10.0 undecidable manual SG 309 0.4107 0.1 0.5
--.TERO.E. 2004-03-07T06:16:45.99 10.0 undecidable manual SG 114 0.3996 0.19 0.2
--.SNTG.Z. 2004-03-07T06:16:40.22 10.0 undecidable manual PG 346 0.4662 -0.14 0.8
--.ASS.Z. 2004-03-07T06:16:39.42 10.0 undecidable manual PG 309 0.4107 0.03 1.7
--.TERO.E. 2004-03-07T06:16:39.23 10.0 undecidable manual PG 114 0.3996 -0.09 1.3
--.NRCA.Z. 2004-03-07T06:16:35.96 10.0 undecidable manual SG 21 0.0333 0.18 0.2
--.NRCA.Z. 2004-03-07T06:16:33.43 10.0 negative manual PG 21 0.0333 -0.1 2.8
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