ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of M 2.0 on date 05-08-1986 and time 12:05:43 (Italy) in region 5 km SE Entracque (CN)

A magnitude M 2.0 earthquake occured in region: 5 km SE Entracque (CN), on

  • 05-08-1986 10:05:43 (UTC)
  • 05-08-1986 12:05:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.22, 7.45 at 15 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 5 774 774
Roaschia CN 6 107 881
Vernante CN 8 1178 2059
Valdieri CN 8 935 2994
Robilante CN 10 2306 5300
Limone Piemonte CN 11 1485 6785
Roccavione CN 12 2761 9546
Moiola CN 13 234 9780
Borgo San Dalmazzo CN 13 12468 22248
Gaiola CN 14 582 22830
Roccasparvera CN 14 741 23571
Valloriate CN 15 109 23680
Boves CN 15 9835 33515
Rittana CN 16 109 33624
Demonte CN 16 2003 35627
Vignolo CN 16 2600 38227
Peveragno CN 19 5543 43770
Cervasca CN 19 5013 48783
Bernezzo CN 19 4104 52887

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Cuneo (56081 inhabitants)
52 Km NW of Sanremo (54807 inhabitants)
83 Km W of Savona (61345 inhabitants)
90 Km S of Moncalieri (57294 inhabitants)
97 Km SW of Asti (76202 inhabitants)
97 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
10:05:43
44.22 7.45 15 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 32259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-08-05 10:05:43 ± 0.206
Latitude 44.22 ± 0.02
Longitude 7.45 ± 0.01
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 32259

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) 2798.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 202
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00486
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 32259
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. 1986-08-05T10:06:03.30 10.0 undecidable manual SG 90 0.0049 0.03 0.7
--.ROB.Z. 1986-08-05T10:05:56.20 10.0 undecidable manual SG 73 0.0028 0.16 0.4
--.FIN.Z. 1986-08-05T10:05:55.00 10.0 undecidable manual PG 90 0.0049 -0.01 1.9
--.ROB.Z. 1986-08-05T10:05:50.70 10.0 undecidable manual PG 73 0.0028 -0.13 1.4
--.STV.Z. 1986-08-05T10:05:49.50 10.0 undecidable manual SG 293 0.0008 -0.19 0.3
--.STV.Z. 1986-08-05T10:05:47.30 10.0 undecidable manual PG 293 0.0008 0.13 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download