Earthquake with magnitude of Md 2.2 on date 01-02-1985 and time 18:09:42 (Italy) in region 7 km W Sigillo (PG)

A magnitude Md 2.2 earthquake occured in region: 7 km W Sigillo (PG), on

  • 01-02-1985 17:09:42 (UTC)
  • 01-02-1985 18:09:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3100, 12.6640 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
Sigillo PG 7 2404 2404
Costacciaro PG 7 1216 3620
Fossato di Vico PG 8 2840 6460
Gubbio PG 8 32216 38676
Scheggia e Pascelupo PG 11 1393 40069
Gualdo Tadino PG 13 15208 55277
Valfabbrica PG 17 3389 58666
Cantiano PU 19 2245 60911
Fabriano AN 20 31480 92391

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NE of Perugia (166134 inhabitants)
39 Km N of Foligno (57155 inhabitants)
66 Km E of Arezzo (99543 inhabitants)
66 Km SW of Fano (60888 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
77 Km W of Ancona (100861 inhabitants)
83 Km N of Terni (111501 inhabitants)
84 Km S of Rimini (147750 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 2.2
M 2.9
1985-02-01
17:09:42
43.31 12.664 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 909
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-01 17:09:42 ± 0.69
Latitude 43.3100 ± 0.0299
Longitude 12.6640 ± 0.0622
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 909

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) 6032.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.00542
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:07

M:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:50:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CM8.Z. 1985-02-01T17:09:58.50 10.0 undecidable manual SG 108 0.3552 2.19 0.1
--.CH1.Z. 1985-02-01T17:09:56.10 10.0 undecidable manual PG? 301 0.5994 1.12 0.4
--.AR1.Z. 1985-02-01T17:09:53.50 10.0 undecidable manual SG 46 0.2664 0.13 0.9
--.AS1.Z. 1985-02-01T17:09:52.50 10.0 undecidable manual SG 181 0.2442 0.04 0.9
--.CM8.Z. 1985-02-01T17:09:50.10 10.0 undecidable manual PG 108 0.3552 -0.41 2.1
--.AS1.Z. 1985-02-01T17:09:47.00 10.0 undecidable manual PG 181 0.2442 -1.29 1.2
--.AR1.Z. 1985-02-01T17:09:47.50 10.0 undecidable manual PG 46 0.2664 -1.32 1.2
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