Earthquake with magnitude of Md 2.3 on date 09-01-1985 and time 12:54:35 (Italy) in region 5 km SW Gubbio (PG)

A magnitude Md 2.3 earthquake occured in region: 5 km SW Gubbio (PG), on

  • 09-01-1985 11:54:35 (UTC)
  • 09-01-1985 12:54:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.32, 12.54 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 5 32216 32216
Scheggia e Pascelupo PG 14 1393 33609
Costacciaro PG 15 1216 34825
Pietralunga PG 16 2111 36936
Sigillo PG 17 2404 39340
Umbertide PG 17 16681 56021
Montone PG 18 1680 57701
Fossato di Vico PG 19 2840 60541
Cantiano PU 19 2245 62786
Valfabbrica PG 19 3389 66175

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NE of Perugia (166134 inhabitants)
43 Km NW of Foligno (57155 inhabitants)
55 Km E of Arezzo (99543 inhabitants)
70 Km SW of Fano (60888 inhabitants)
72 Km SW of Pesaro (94582 inhabitants)
82 Km S of Rimini (147750 inhabitants)
85 Km N of Terni (111501 inhabitants)
86 Km W of Ancona (100861 inhabitants)
94 Km S of Cesena (96758 inhabitants)
97 Km E of Siena (53903 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 1985-01-09
11:54:35
43.32 12.54 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 299
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-09 11:54:35 ± 0.319
Latitude 43.32 ± 0.02
Longitude 12.54 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 299

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) 3810.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00461
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 299
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:05:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1985-01-09T11:54:54.00 10.0 undecidable manual SG 305 0.0046 -0.4 0.8
--.ARV.Z. 1985-01-09T11:54:50.00 10.0 undecidable manual SG 58 0.0031 1.2 0.1
--.CRE.Z. 1985-01-09T11:54:47.00 10.0 undecidable manual PG 305 0.0046 0.46 1.3
--.ARV.Z. 1985-01-09T11:54:42.50 10.0 undecidable manual PG 58 0.0031 -0.8 0.8
--.ASS.Z. 1985-01-09T11:54:42.00 10.0 undecidable manual PG 161 0.0024 0.05 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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