Earthquake with magnitude of Md 3.1 on date 23-07-2004 and time 03:26:05 (Italy) in region 1 km W Pietralunga (PG)

A magnitude Md 3.1 earthquake occured in region: 1 km W Pietralunga (PG), on

  • 23-07-2004 01:26:05 (UTC)
  • 23-07-2004 03:26:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.44, 12.42 at 3 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
Pietralunga PG 1 2111 2111
Montone PG 12 1680 3791
Apecchio PU 13 1882 5673
CittĂ  di Castello PG 15 39913 45586
Gubbio PG 16 32216 77802
Cantiano PU 17 2245 80047
Umbertide PG 17 16681 96728
Piobbico PU 18 2029 98757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km N of Perugia (166134 inhabitants)
44 Km E of Arezzo (99543 inhabitants)
59 Km NW of Foligno (57155 inhabitants)
65 Km SW of Pesaro (94582 inhabitants)
66 Km SW of Fano (60888 inhabitants)
70 Km S of Rimini (147750 inhabitants)
79 Km S of Cesena (96758 inhabitants)
89 Km E of Siena (53903 inhabitants)
90 Km W of Ancona (100861 inhabitants)
92 Km SE of Forlì (117913 inhabitants)
100 Km N of Terni (111501 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 3.1
ML-VAX 2.2
2004-07-23
01:26:05
43.44 12.42 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 501829
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2004-07-23 01:26:05 ± 0.223
Latitude 43.44 ± 0.01
Longitude 12.42 ± 0.02
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 501829

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) 1756.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.0017
Epicentral distance of station farthest from the epicenter (degree) 0.01441
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 11
Type of magnitude Md
Reference to an origin 501829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:59:53

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 8
Type of magnitude ML
Reference to an origin 501829
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 Takeoff_angle Residual Weight
--.GSCL.Z. 2004-07-23T01:26:36.20 10.0 undecidable manual PN 305 0.0144 1.3 0.2
--.BDI.Z. 2004-07-23T01:26:33.58 10.0 undecidable manual PN 295 0.013 0.87 0.5
--.PII.Z. 2004-07-23T01:26:32.38 10.0 undecidable manual PN 282 0.0126 0.4 0.9
--.AQU.Z. 2004-07-23T01:26:31.54 10.0 undecidable manual PN 146 0.0117 0.93 0.4
--.PGD.Z. 2004-07-23T01:26:30.48 10.0 undecidable manual SG 310 0.006 0.3 0.6
--.SFI.Z. 2004-07-23T01:26:29.10 10.0 undecidable manual SG 318 0.0055 0.39 0.5
--.CING.Z. 2004-07-23T01:26:27.19 10.0 undecidable manual SG 96 0.005 0.29 0.6
--.TERO.Z. 2004-07-23T01:26:27.87 10.0 undecidable manual PN 133 0.0107 -1.18 0.3
--.GRFL.Z. 2004-07-23T01:26:26.96 10.0 undecidable manual PN 254 0.0098 -0.78 0.6
--.SEI.Z. 2004-07-23T01:26:26.70 10.0 undecidable manual PG 308 0.0088 1.05 0.4
--.VMG.Z. 2004-07-23T01:26:22.31 10.0 undecidable manual PG 309 0.0074 -0.34 1.3
--.CSNT.Z. 2004-07-23T01:26:21.86 10.0 negative manual PG 272 0.0074 -0.84 1.4
--.ARV.Z. 2004-07-23T01:26:20.29 10.0 undecidable manual SG 81 0.0034 -0.04 0.6
--.FSSB.Z. 2004-07-23T01:26:19.67 10.0 undecidable manual SG 45 0.0032 0.29 0.6
--.PGD.Z. 2004-07-23T01:26:19.35 10.0 undecidable manual PG 310 0.006 -0.45 1.2
--.SFI.Z. 2004-07-23T01:26:18.26 10.0 undecidable manual PG 318 0.0055 -0.69 0.9
--.CING.Z. 2004-07-23T01:26:17.15 10.0 undecidable manual PG 96 0.005 -0.76 0.8
--.RSM.Z. 2004-07-23T01:26:16.78 10.0 undecidable manual PG 2 0.0043 0.36 1.3
--.MURB.Z. 2004-07-23T01:26:14.15 10.0 undecidable manual SG 158 0.0017 0.92 0.2
--.FSSB.Z. 2004-07-23T01:26:13.47 10.0 positive manual PG 45 0.0032 -0.1 3
--.ARV.Z. 2004-07-23T01:26:13.92 10.0 positive manual PG 81 0.0034 -0.19 2.9
--.MURB.Z. 2004-07-23T01:26:10.36 10.0 positive manual PG 158 0.0017 0.35 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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