Earthquake with magnitude of ML 0.3 on date 02-08-2011 and time 05:23:09 (Italy) in region 9 km N Valfabbrica (PG)

A magnitude ML 0.3 earthquake occured in region: 9 km N Valfabbrica (PG), on

  • 02-08-2011 03:23:09 (UTC)
  • 02-08-2011 05:23:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2390, 12.5930 at 22 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
Valfabbrica PG 9 3389 3389
Gubbio PG 13 32216 35605
Fossato di Vico PG 15 2840 38445
Gualdo Tadino PG 16 15208 53653
Sigillo PG 16 2404 56057
Costacciaro PG 17 1216 57273
Assisi PG 19 28299 85572
Bastia Umbra PG 19 21874 107446
Scheggia e Pascelupo PG 19 1393 108839

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Perugia (166134 inhabitants)
33 Km N of Foligno (57155 inhabitants)
63 Km E of Arezzo (99543 inhabitants)
75 Km N of Terni (111501 inhabitants)
76 Km SW of Fano (60888 inhabitants)
79 Km SW of Pesaro (94582 inhabitants)
86 Km W of Ancona (100861 inhabitants)
92 Km S of Rimini (147750 inhabitants)
100 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 1.5
ML 0.3
2011-08-02
03:23:09
43.239 12.593 22 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1267379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-02 03:23:09 ± 0.71
Latitude 43.2390 ± 0.0297
Longitude 12.5930 ± 0.0469
Depth (km) 22 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1267379

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3181
Semi-minor axis of confidence ellipse (meter) 3112
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 5032.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29947
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1267379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:00:37

Md:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1267379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:00:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2011-08-02T03:23:16.35 0.6 undecidable manual Sg 296 6.1938 0.111 68
IV.PIEI.HHE. 2011-08-02T03:23:16.35 0.6 undecidable manual Pg 352 33.2445 0.184 65
IV.SSFR.HHE. 2011-08-02T03:23:15.19 0.3 undecidable manual Pg 35 26.751 -0.092 99
IV.ATVO.HHZ. 2011-08-02T03:23:14.81 0.3 undecidable manual Pg 317 21.867 0.132 100
IV.ATCC.EHN. 2011-08-02T03:23:13.52 0.3 undecidable manual Pg 147 7.0929 0.205 100
IV.MURB.HHZ. 2011-08-02T03:23:12.82 0.3 undecidable manual Pg 296 6.1938 -0.449 96
IV.LNSS.HHE. 2011-08-02T03:23:05.57 10.0 undecidable manual Pg 0 0 0
IV.MSC.EHZ. 2011-08-02T03:22:50.90 10.0 undecidable manual Pg 0 0 0
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