Earthquake with magnitude of Md 2.0 on date 21-09-1985 and time 02:25:53 (UTC) in region 2 km SW Valdieri (CN)

A magnitude Md 2.0 earthquake occured in region: 2 km SW Valdieri (CN), on

  • 21-09-1985 02:25:53 (UTC)
  • 21-09-1985 04:25:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.27, 7.39 at 12 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
Valdieri CN 2 935 935
Entracque CN 3 774 1709
Roaschia CN 5 107 1816
Moiola CN 6 234 2050
Gaiola CN 8 582 2632
Valloriate CN 8 109 2741
Roccavione CN 9 2761 5502
Demonte CN 9 2003 7505
Roccasparvera CN 10 741 8246
Rittana CN 10 109 8355
Robilante CN 10 2306 10661
Borgo San Dalmazzo CN 11 12468 23129
Vernante CN 12 1178 24307
Vignolo CN 12 2600 26907
Bernezzo CN 14 4104 31011
Aisone CN 14 248 31259
Cervasca CN 15 5013 36272
Boves CN 15 9835 46107
Valgrana CN 16 786 46893
Limone Piemonte CN 17 1485 48378
Monterosso Grana CN 17 505 48883
Caraglio CN 17 6836 55719
Vinadio CN 18 644 56363
Pradleves CN 19 250 56613
Cuneo CN 19 56081 112694
Montemale di Cuneo CN 19 241 112935
Peveragno CN 20 5543 118478

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SW of Cuneo (56081 inhabitants)
59 Km NW of Sanremo (54807 inhabitants)
85 Km S of Moncalieri (57294 inhabitants)
87 Km W of Savona (61345 inhabitants)
93 Km S of Torino (890529 inhabitants)
96 Km SW of Asti (76202 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 2.0 1985-09-21
02:25:53
44.27 7.39 12 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 13519
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-21 02:25:53 ± 0.231
Latitude 44.27 ± 0.02
Longitude 7.39 ± 0.03
Depth (km) 12 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 13519

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) 2932.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.0004
Epicentral distance of station farthest from the epicenter (degree) 0.01012
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

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 13519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:16:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LMR.Z. 1985-09-21T02:26:30.30 10.0 undecidable manual SN 214 0.0101 0 0.6
--.LRG.Z. 1985-09-21T02:26:29.50 10.0 undecidable manual SN 222 0.0099 -0.12 0.6
--.FRF.Z. 1985-09-21T02:26:21.90 10.0 undecidable manual SG 217 0.0079 -1.72 0
--.LMR.Z. 1985-09-21T02:26:15.10 10.0 undecidable manual PN 214 0.0101 0.43 1.3
--.LRG.Z. 1985-09-21T02:26:14.80 10.0 undecidable manual PN 222 0.0099 0.52 1.1
--.FRF.Z. 1985-09-21T02:26:10.50 10.0 undecidable manual PG 217 0.0079 -0.32 1.6
--.ROB.Z. 1985-09-21T02:26:05.40 10.0 undecidable manual SG 83 0.0031 -1 0.2
--.DA9.Z. 1985-09-21T02:26:03.00 10.0 undecidable manual SG 336 0.0023 -0.58 0.5
--.ROB.Z. 1985-09-21T02:26:01.10 10.0 undecidable manual PG 83 0.0031 0.23 2
--.DA9.Z. 1985-09-21T02:25:59.00 10.0 undecidable manual PG 336 0.0023 -0.25 2
--.STV.Z. 1985-09-21T02:25:56.60 10.0 undecidable manual PG 251 0.0004 0.8 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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