ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of M 2.0 on date 05-08-1986 and time 11:56:19 (Italy) in region 3 km SE Roaschia (CN)

A magnitude M 2.0 earthquake occured in region: 3 km SE Roaschia (CN), on

  • 05-08-1986 09:56:19 (UTC)
  • 05-08-1986 11:56:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.25, 7.49 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 3 107 107
Vernante CN 4 1178 1285
Robilante CN 6 2306 3591
Entracque CN 7 774 4365
Roccavione CN 7 2761 7126
Valdieri CN 8 935 8061
Limone Piemonte CN 9 1485 9546
Borgo San Dalmazzo CN 9 12468 22014
Boves CN 11 9835 31849
Moiola CN 11 234 32083
Roccasparvera CN 11 741 32824
Gaiola CN 12 582 33406
Vignolo CN 13 2600 36006
Rittana CN 13 109 36115
Valloriate CN 13 109 36224
Peveragno CN 14 5543 41767
Cervasca CN 15 5013 46780
Bernezzo CN 16 4104 50884
Demonte CN 17 2003 52887
Cuneo CN 17 56081 108968
Chiusa di Pesio CN 18 3676 112644
Beinette CN 18 3423 116067
Caraglio CN 19 6836 122903
Valgrana CN 20 786 123689

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SW of Cuneo (56081 inhabitants)
53 Km NW of Sanremo (54807 inhabitants)
80 Km W of Savona (61345 inhabitants)
85 Km S of Moncalieri (57294 inhabitants)
92 Km SW of Asti (76202 inhabitants)
93 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 M 2.0 1986-08-05
09:56:19
44.25 7.49 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 32239
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-08-05 09:56:19 ± 0.173
Latitude 44.25 ± 0.01
Longitude 7.49 ± 0.02
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 32239

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) 2104.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
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) 0.00097
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

M:2

Field Value
Value 2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 32239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FIN.Z. 1986-08-05T09:56:37.80 10.0 undecidable manual SG 94 0.0046 -0.21 0.6
--.IMP.Z. 1986-08-05T09:56:35.90 10.0 undecidable manual SG 138 0.004 0.36 0.5
--.ROB.Z. 1986-08-05T09:56:31.10 10.0 undecidable manual SG 78 0.0025 0.7 0.2
--.DA9.Z. 1986-08-05T09:56:31.00 10.0 undecidable manual SG 325 0.0028 -0.21 0.8
--.FIN.Z. 1986-08-05T09:56:29.60 10.0 undecidable manual PG 94 0.0046 -0.54 0.6
--.IMP.Z. 1986-08-05T09:56:28.80 10.0 undecidable manual PG 138 0.004 0.09 1.9
--.DA9.Z. 1986-08-05T09:56:26.50 10.0 undecidable manual PG 325 0.0028 0.29 1.7
--.ROB.Z. 1986-08-05T09:56:25.70 10.0 undecidable manual PG 78 0.0025 -0.05 2.3
--.STV.Z. 1986-08-05T09:56:25.40 10.0 undecidable manual SG 271 0.001 0.55 0.3
--.STV.Z. 1986-08-05T09:56:22.10 10.0 undecidable manual PG 271 0.001 -0.43 1.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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