Earthquake with magnitude of Md 2.3 on date 22-01-1985 and time 00:39:36 (Italy) in region 6 km W Cantiano (PU)

A magnitude Md 2.3 earthquake occured in region: 6 km W Cantiano (PU), on

  • 21-01-1985 23:39:36 (UTC)
  • 22-01-1985 00:39:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.47, 12.56 at 25 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
Cantiano PU 6 2245 2245
Pietralunga PG 10 2111 4356
Cagli PU 11 8731 13087
Scheggia e Pascelupo PG 12 1393 14480
Gubbio PG 13 32216 46696
Piobbico PU 14 2029 48725
Apecchio PU 15 1882 50607
Frontone PU 15 1300 51907
Serra Sant'Abbondio PU 17 1027 52934
Costacciaro PG 18 1216 54150
Acqualagna PU 18 4393 58543

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NE of Perugia (166134 inhabitants)
55 Km E of Arezzo (99543 inhabitants)
55 Km SW of Fano (60888 inhabitants)
56 Km SW of Pesaro (94582 inhabitants)
59 Km N of Foligno (57155 inhabitants)
65 Km S of Rimini (147750 inhabitants)
78 Km SE of Cesena (96758 inhabitants)
79 Km W of Ancona (100861 inhabitants)
93 Km SE of Forlì (117913 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 1985-01-21
23:39:36
43.47 12.56 25 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 709
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-21 23:39:36 ± 0.474
Latitude 43.47 ± 0.03
Longitude 12.56 ± 0.04
Depth (km) 25 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 709

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) 4298.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00979
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 3
Type of magnitude Md
Reference to an origin 709
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:05:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1985-01-21T23:40:11.00 10.0 undecidable manual SN 175 0.0098 0.75 0.4
--.MNS.Z. 1985-01-21T23:39:55.00 10.0 undecidable manual PN? 175 0.0098 -1.05 0.2
--.AS1.Z. 1985-01-21T23:39:52.00 10.0 undecidable manual SG 170 0.0037 -0.87 0.4
--.AR1.Z. 1985-01-21T23:39:50.00 10.0 undecidable manual SG 85 0.0024 1.04 0.3
--.CH1.Z. 1985-01-21T23:39:47.00 10.0 undecidable manual PG 289 0.0042 0.09 2.4
--.AS1.Z. 1985-01-21T23:39:46.50 10.0 undecidable manual PG 170 0.0037 0.48 1.9
--.AR1.Z. 1985-01-21T23:39:43.00 10.0 undecidable manual PG 85 0.0024 -0.76 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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