Earthquake with magnitude of ML 0.6 on date 27-07-2011 and time 04:34:31 (Italy) in region 5 km W Sigillo (PG)

A magnitude ML 0.6 earthquake occured in region: 5 km W Sigillo (PG), on

  • 27-07-2011 02:34:31 (UTC)
  • 27-07-2011 04:34:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3140, 12.6830 at 11 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
Sigillo PG 5 2404 2404
Costacciaro PG 6 1216 3620
Fossato di Vico PG 7 2840 6460
Gubbio PG 10 32216 38676
Scheggia e Pascelupo PG 10 1393 40069
Gualdo Tadino PG 12 15208 55277
Fabriano AN 18 31480 86757
Valfabbrica PG 18 3389 90146
Cantiano PU 18 2245 92391
Sassoferrato AN 20 7285 99676

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Perugia (166134 inhabitants)
40 Km N of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
67 Km E of Arezzo (99543 inhabitants)
69 Km S of Pesaro (94582 inhabitants)
76 Km W of Ancona (100861 inhabitants)
84 Km S of Rimini (147750 inhabitants)
84 Km N of Terni (111501 inhabitants)
98 Km SE of Cesena (96758 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 0.6
2011-07-27
02:34:31
43.314 12.683 11 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1264189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-07-27 02:34:31 ± 0.65
Latitude 43.3140 ± 0.0234
Longitude 12.6830 ± 0.0544
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1264189

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4421
Semi-minor axis of confidence ellipse (meter) 2632
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 5110.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 220
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.85
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24641
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 1264189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:56:15

Md:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1264189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:56:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FSSB.HHN. 2011-07-27T02:34:53.13 10.0 undecidable manual Pg 0 0 0
IV.ATCC.EHE. 2011-07-27T02:34:38.27 0.6 undecidable manual Sg 194 14.6742 0.71 59
IV.MURB.HHZ. 2011-07-27T02:34:37.76 0.3 undecidable manual Sg 246 13.9749 0.399 98
IV.PIEI.HHE. 2011-07-27T02:34:37.44 0.3 undecidable manual Pg 334 27.3504 0.589 91
IV.ATVO.HHZ. 2011-07-27T02:34:35.81 0.6 undecidable manual Pg 289 23.5542 -0.451 64
IV.ATCC.EHE. 2011-07-27T02:34:34.56 0.3 undecidable manual Pg 194 14.6742 -0.314 100
IV.MURB.HHZ. 2011-07-27T02:34:33.84 0.3 undecidable manual Pg 246 13.9749 -0.919 81
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