Earthquake with magnitude of Md 2.5 on date 06-12-1985 and time 12:00:00 (Italy) in region 2 km E Roaschia (CN)

A magnitude Md 2.5 earthquake occured in region: 2 km E Roaschia (CN), on

  • 06-12-1985 11:00:00 (UTC)
  • 06-12-1985 12:00:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2710, 7.4850 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
Roaschia CN 2 107 107
Robilante CN 4 2306 2413
Vernante CN 5 1178 3591
Roccavione CN 5 2761 6352
Borgo San Dalmazzo CN 7 12468 18820
Valdieri CN 7 935 19755
Entracque CN 8 774 20529
Boves CN 9 9835 30364
Roccasparvera CN 9 741 31105
Moiola CN 9 234 31339
Gaiola CN 10 582 31921
Vignolo CN 10 2600 34521
Limone Piemonte CN 11 1485 36006
Rittana CN 11 109 36115
Valloriate CN 12 109 36224
Peveragno CN 13 5543 41767
Cervasca CN 13 5013 46780
Bernezzo CN 14 4104 50884
Cuneo CN 15 56081 106965
Demonte CN 16 2003 108968
Chiusa di Pesio CN 17 3676 112644
Beinette CN 17 3423 116067
Caraglio CN 17 6836 122903
Valgrana CN 18 786 123689
Monterosso Grana CN 20 505 124194

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SW of Cuneo (56081 inhabitants)
55 Km NW of Sanremo (54807 inhabitants)
80 Km W of Savona (61345 inhabitants)
83 Km S of Moncalieri (57294 inhabitants)
90 Km SW of Asti (76202 inhabitants)
91 Km S of Torino (890529 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 1985-12-06
11:00:00
44.271 7.485 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 17489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-06 11:00:00 ± 0.067
Latitude 44.2710 ± 0.0074
Longitude 7.4850 ± 0.0095
Depth (km) 10 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 17489

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) 1118.4
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 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00469
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 1
Type of magnitude Md
Reference to an origin 17489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FIN.Z. 1985-12-06T11:00:18.50 10.0 undecidable manual SG 96 0.5217 -0.18 0.2
--.IMP.Z. 1985-12-06T11:00:16.60 10.0 undecidable manual SG 140 0.4551 -0.09 0.6
--.SOO.Z. 1985-12-06T11:00:13.80 10.0 undecidable manual SG 310 0.3552 0.31 0.1
--.DA9.Z. 1985-12-06T11:00:11.00 10.0 undecidable manual SG 323 0.2886 -0.18 0.3
--.FIN.Z. 1985-12-06T11:00:10.70 10.0 undecidable manual PG 96 0.5217 -0.09 1.2
--.IMP.Z. 1985-12-06T11:00:09.70 10.0 undecidable manual PG 140 0.4551 0.06 1.7
--.SOO.Z. 1985-12-06T11:00:07.70 10.0 undecidable manual PG 310 0.3552 -0.1 1.6
--.ROB.Z. 1985-12-06T11:00:06.60 10.0 undecidable manual PG 83 0.2775 0.3 0.5
--.DA9.Z. 1985-12-06T11:00:06.50 10.0 undecidable manual PG 323 0.2886 0.04 2.1
--.STV.Z. 1985-12-06T11:00:05.50 10.0 undecidable manual SG 259 0.111 -0.09 0.7
--.STV.Z. 1985-12-06T11:00:03.30 10.0 undecidable manual PG 259 0.111 0.07 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