ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of M 2.0 on date 07-08-1986 and time 10:47:32 (Italy) in region 3 km SW Entracque (CN)

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

  • 07-08-1986 08:47:32 (UTC)
  • 07-08-1986 10:47:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.22, 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
Entracque CN 3 774 774
Valdieri CN 7 935 1709
Roaschia CN 8 107 1816
Moiola CN 11 234 2050
Vernante CN 12 1178 3228
Demonte CN 13 2003 5231
Gaiola CN 13 582 5813
Robilante CN 13 2306 8119
Roccavione CN 13 2761 10880
Valloriate CN 13 109 10989
Roccasparvera CN 14 741 11730
Rittana CN 15 109 11839
Borgo San Dalmazzo CN 15 12468 24307
Limone Piemonte CN 15 1485 25792
Aisone CN 17 248 26040
Vignolo CN 17 2600 28640
Boves CN 18 9835 38475
Bernezzo CN 19 4104 42579
Cervasca CN 19 5013 47592
Vinadio CN 19 644 48236

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SW of Cuneo (56081 inhabitants)
55 Km NW of Sanremo (54807 inhabitants)
88 Km W of Savona (61345 inhabitants)
90 Km S of Moncalieri (57294 inhabitants)
98 Km S of Torino (890529 inhabitants)
100 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 M 2.0 1986-08-07
08:47:32
44.22 7.39 12 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 32389
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-08-07 08:47:32 ± 0.697
Latitude 44.22 ± 0.05
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 32389

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) 6632.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 230
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.0004
Epicentral distance of station farthest from the epicenter (degree) 0.00316
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

M:2

Field Value
Value 2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 32389
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
--.ROB.Z. 1986-08-07T08:47:46.40 10.0 undecidable manual SG 76 0.0032 0.6 0.2
--.SOO.Z. 1986-08-07T08:47:44.90 10.0 undecidable manual SG 324 0.0031 -0.63 0.2
--.SOO.Z. 1986-08-07T08:47:40.40 10.0 undecidable manual PG 324 0.0031 0.43 1.1
--.ROB.Z. 1986-08-07T08:47:39.70 10.0 undecidable manual PG 76 0.0032 -0.43 1.1
--.STV.Z. 1986-08-07T08:47:36.80 10.0 undecidable manual SG 307 0.0004 0.02 0.9
--.STV.Z. 1986-08-07T08:47:34.90 10.0 undecidable manual PG 307 0.0004 -0.02 2.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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