INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Md 2.1 on date 13-12-1985 and time 10:57:31 (UTC) in region 3 km SW Robilante (CN)

A magnitude Md 2.1 earthquake occured in region: 3 km SW Robilante (CN), on

  • 13-12-1985 10:57:31 (UTC)
  • 13-12-1985 11:57:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.27, 7.5 at 9 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
Robilante CN 3 2306 2306
Roaschia CN 3 107 2413
Vernante CN 4 1178 3591
Roccavione CN 5 2761 6352
Borgo San Dalmazzo CN 6 12468 18820
Boves CN 8 9835 28655
Valdieri CN 8 935 29590
Entracque CN 9 774 30364
Roccasparvera CN 9 741 31105
Vignolo CN 10 2600 33705
Gaiola CN 10 582 34287
Moiola CN 10 234 34521
Limone Piemonte CN 10 1485 36006
Rittana CN 11 109 36115
Peveragno CN 12 5543 41658
Valloriate CN 12 109 41767
Cervasca CN 12 5013 46780
Bernezzo CN 14 4104 50884
Cuneo CN 14 56081 106965
Chiusa di Pesio CN 16 3676 110641
Beinette CN 16 3423 114064
Demonte CN 16 2003 116067
Caraglio CN 17 6836 122903
Valgrana CN 18 786 123689

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SW of Cuneo (56081 inhabitants)
55 Km NW of Sanremo (54807 inhabitants)
79 Km W of Savona (61345 inhabitants)
82 Km S of Moncalieri (57294 inhabitants)
90 Km SW of Asti (76202 inhabitants)
90 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
Rev 1000 Md 2.1 1985-12-13
10:57:31
44.27 7.5 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 18029
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-13 10:57:31 ± 0.152
Latitude 44.27 ± 0.01
Longitude 7.50 ± 0.02
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 18029

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) 1859.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.00461
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 18029
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FIN.Z. 1985-12-13T10:57:49.10 10.0 undecidable manual SG 96 0.0046 -0.7 0.1
--.IMP.Z. 1985-12-13T10:57:47.80 10.0 undecidable manual SG 141 0.004 -0.14 0.6
--.DA9.Z. 1985-12-13T10:57:42.50 10.0 undecidable manual SG 322 0.0026 -0.09 0.8
--.IMP.Z. 1985-12-13T10:57:41.10 10.0 undecidable manual PG 141 0.004 0.27 1.2
--.FIN.Z. 1985-12-13T10:57:41.90 10.0 undecidable manual PG 96 0.0046 -0.01 1.6
--.ROB.Z. 1985-12-13T10:57:41.60 10.0 undecidable manual SG 83 0.0024 -0.38 0.6
--.ROB.Z. 1985-12-13T10:57:37.90 10.0 undecidable manual PG 83 0.0024 0.5 0.6
--.DA9.Z. 1985-12-13T10:57:37.80 10.0 undecidable manual PG 322 0.0026 0.06 2
--.STV.Z. 1985-12-13T10:57:36.30 10.0 undecidable manual SG 259 0.0011 -0.39 0.6
--.STV.Z. 1985-12-13T10:57:34.40 10.0 undecidable manual PG 259 0.0011 0.06 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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