Earthquake with magnitude of Md 2.3 on date 09-01-1985 and time 00:38:35 (Italy) in region 2 km N Gubbio (PG)

A magnitude Md 2.3 earthquake occured in region: 2 km N Gubbio (PG), on

  • 08-01-1985 23:38:35 (UTC)
  • 09-01-1985 00:38:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.37, 12.58 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
Gubbio PG 2 32216 32216
Scheggia e Pascelupo PG 8 1393 33609
Costacciaro PG 10 1216 34825
Cantiano PU 12 2245 37070
Sigillo PG 13 2404 39474
Pietralunga PG 14 2111 41585
Fossato di Vico PG 17 2840 44425

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Perugia (166134 inhabitants)
47 Km N of Foligno (57155 inhabitants)
58 Km E of Arezzo (99543 inhabitants)
63 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
77 Km S of Rimini (147750 inhabitants)
80 Km W of Ancona (100861 inhabitants)
90 Km SE of Cesena (96758 inhabitants)
90 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
Rev 1000 Md 2.3 1985-01-08
23:38:35
43.37 12.59 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-08 23:38:35 ± 0.143
Latitude 43.37 ± 0.01
Longitude 12.59 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 259

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) 1409.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00753
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:05:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1985-01-08T23:38:54.00 10.0 undecidable manual SG 298 0.0047 -0.47 0.2
--.PO9.Z. 1985-01-08T23:38:52.50 10.0 undecidable manual PG 161 0.0075 0.07 1.2
--.CRE.Z. 1985-01-08T23:38:47.00 10.0 undecidable manual PG 298 0.0047 0.42 0.5
--.ASS.Z. 1985-01-08T23:38:47.80 10.0 undecidable manual SG 171 0.0028 0.05 1
--.ARV.Z. 1985-01-08T23:38:42.20 10.0 undecidable manual PG 64 0.0026 -0.07 1.7
--.ASS.Z. 1985-01-08T23:38:42.50 10.0 undecidable manual PG 171 0.0028 -0.19 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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