Earthquake with magnitude of ML 0.4 on date 02-09-2011 and time 23:25:29 (UTC) in region 1 km N Nocera Umbra (PG)

A magnitude ML 0.4 earthquake occured in region: 1 km N Nocera Umbra (PG), on

  • 02-09-2011 23:25:29 (UTC)
  • 03-09-2011 01:25:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1240, 12.7880 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
Nocera Umbra PG 1 5839 5839
Valtopina PG 8 1398 7237
Gualdo Tadino PG 12 15208 22445
Sefro MC 13 422 22867
Fiuminata MC 14 1402 24269
Serravalle di Chienti MC 15 1070 25339
Assisi PG 15 28299 53638
Valfabbrica PG 16 3389 57027
Pioraco MC 17 1134 58161
Spello PG 17 8645 66806
Esanatoglia MC 19 2034 68840
Fossato di Vico PG 19 2840 71680
Foligno PG 20 57155 128835

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Foligno (57155 inhabitants)
32 Km E of Perugia (166134 inhabitants)
64 Km N of Terni (111501 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
82 Km S of Fano (60888 inhabitants)
83 Km E of Arezzo (99543 inhabitants)
88 Km S of Pesaro (94582 inhabitants)
91 Km NW of Teramo (54892 inhabitants)
96 Km NE of Viterbo (67173 inhabitants)
99 Km NW of L'Aquila (69753 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 1.6
ML 0.4
2011-09-02
23:25:29
43.124 12.788 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1280419
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-09-02 23:25:29 ± 0.05
Latitude 43.1240 ± 0.0027
Longitude 12.7880 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1280419

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 283
Semi-minor axis of confidence ellipse (meter) 247
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 424.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
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) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.12411
Epicentral distance of station farthest from the epicenter (degree) 0.37592
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1280419
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:19:04

Md:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1280419
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:19:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHN. 2011-09-02T23:25:43.34 0.1 undecidable manual Sg 140 41.7249 0.049 96
IV.SSFR.HHN. 2011-09-02T23:25:41.49 0.1 undecidable manual Sg 359 34.6431 0.089 96
IV.NRCA.HHN. 2011-09-02T23:25:37.41 0.1 undecidable manual Pg 140 41.7249 -0.055 96
IV.SNTG.HHN. 2011-09-02T23:25:36.96 0.1 undecidable manual Sg 40 19.0698 -0.03 100
IV.SSFR.HHN. 2011-09-02T23:25:36.21 0.1 undecidable manual Pg 359 34.6431 -0.159 95
IV.ATCC.EHE. 2011-09-02T23:25:35.41 0.3 undecidable manual Sg 300 13.7751 -0.012 76
IV.SNTG.HHN. 2011-09-02T23:25:33.90 0.3 undecidable manual Pg 40 19.0698 0.077 74
IV.ATCC.EHE. 2011-09-02T23:25:32.97 0.3 undecidable manual Pg 300 13.7751 0.055 75
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