Earthquake with magnitude of Md 2.5 on date 10-01-1985 and time 20:22:40 (Italy) in region 4 km W Gubbio (PG)

A magnitude Md 2.5 earthquake occured in region: 4 km W Gubbio (PG), on

  • 10-01-1985 19:22:40 (UTC)
  • 10-01-1985 20:22:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3480, 12.5320 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 4 32216 32216
Scheggia e Pascelupo PG 13 1393 33609
Pietralunga PG 13 2111 35720
Costacciaro PG 15 1216 36936
Cantiano PU 16 2245 39181
Montone PG 17 1680 40861
Sigillo PG 17 2404 43265
Umbertide PG 17 16681 59946
Fossato di Vico PG 20 2840 62786

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Perugia (166134 inhabitants)
46 Km NW of Foligno (57155 inhabitants)
54 Km E of Arezzo (99543 inhabitants)
68 Km SW of Fano (60888 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
79 Km S of Rimini (147750 inhabitants)
85 Km W of Ancona (100861 inhabitants)
88 Km N of Terni (111501 inhabitants)
91 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
Bulletin
Rev1000
Md 2.5 1985-01-10
19:22:40
43.348 12.532 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 359
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-10 19:22:40 ± 0.227
Latitude 43.3480 ± 0.0147
Longitude 12.5320 ± 0.0208
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 359

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) 2347.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.00866
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:05:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1985-01-10T19:23:00.00 10.0 undecidable manual PG 173 0.9657 0.84 0.3
--.CRE.Z. 1985-01-10T19:22:58.00 10.0 undecidable manual SG 302 0.4995 -0.13 0.5
--.PO9.Z. 1985-01-10T19:22:56.50 10.0 undecidable manual PG 158 0.8214 -0.08 1
--.ASS.Z. 1985-01-10T19:22:52.50 10.0 undecidable manual SG 162 0.2997 0.9 0.1
--.ARV.Z. 1985-01-10T19:22:52.50 10.0 undecidable manual SG 62 0.333 -0.28 0.7
--.CRE.Z. 1985-01-10T19:22:51.00 10.0 undecidable manual PG 302 0.4995 0.49 0.9
--.PRG.Z. 1985-01-10T19:22:49.00 10.0 undecidable manual SG 201 0.2553 -1.53 0
--.ARV.Z. 1985-01-10T19:22:47.20 10.0 positive manual PG 62 0.333 -0.23 2.5
--.ASS.Z. 1985-01-10T19:22:47.00 10.0 undecidable manual PG 162 0.2997 0.26 1.2
--.PRG.Z. 1985-01-10T19:22:46.00 10.0 undecidable manual PG 201 0.2553 -0.13 2.7
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