Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.1 on date 22-08-1986 and time 14:13:42 (Italy) in region 4 km SE Viù (TO)

A magnitude Md 2.1 earthquake occured in region: 4 km SE Viù (TO), on

  • 22-08-1986 12:13:42 (UTC)
  • 22-08-1986 14:13:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.2190, 7.4220 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Viù TO 4 1051 1051
Varisella TO 5 810 1861
Traves TO 6 518 2379
Germagnano TO 6 1201 3580
Vallo Torinese TO 6 774 4354
Val della Torre TO 7 3869 8223
Lanzo Torinese TO 7 5086 13309
Fiano TO 8 2695 16004
Pessinetto TO 8 606 16610
Cafasse TO 8 3451 20061
Mezzenile TO 9 786 20847
La Cassa TO 9 1788 22635
Givoletto TO 9 3914 26549
Rubiana TO 9 2400 28949
Monastero di Lanzo TO 9 350 29299
Balangero TO 10 3156 32455
Coassolo Torinese TO 10 1547 34002
Lemie TO 10 179 34181
Mathi TO 10 3921 38102
Villanova Canavese TO 11 1186 39288
Ceres TO 11 1065 40353
Almese TO 11 6401 46754
Grosso TO 11 1018 47772
Villar Dora TO 12 2932 50704
Robassomero TO 12 3057 53761
Nole TO 12 6892 60653
San Gillio TO 12 3174 63827
Caprie TO 13 2086 65913
Caselette TO 13 3060 68973
Corio TO 14 3277 72250
Sant'Ambrogio di Torino TO 14 4755 77005
Ala di Stura TO 14 469 77474
Condove TO 14 4638 82112
Cantoira TO 14 564 82676
Ciriè TO 14 18909 101585
Chiusa di San Michele TO 15 1647 103232
San Carlo Canavese TO 15 4031 107263
Druento TO 15 8622 115885
Avigliana TO 16 12516 128401
Usseglio TO 16 209 128610
Rocca Canavese TO 16 1708 130318
Alpignano TO 16 17008 147326
Pianezza TO 16 15152 162478
San Maurizio Canavese TO 16 10237 172715
Rosta TO 17 4903 177618
Vaie TO 17 1458 179076
Buttigliera Alta TO 17 6419 185495
Vauda Canavese TO 17 1464 186959
Sant'Antonino di Susa TO 17 4306 191265
Valgioie TO 17 951 192216
Chialamberto TO 17 345 192561
Borgone Susa TO 18 2229 194790
Barbania TO 18 1607 196397
Levone TO 18 442 196839
Caselle Torinese TO 18 19136 215975
San Francesco al Campo TO 18 5005 220980
Balme TO 18 115 221095
Reano TO 19 1818 222913
Rivoli TO 19 48791 271704
San Didero TO 19 551 272255
Venaria Reale TO 19 34193 306448
Forno Canavese TO 19 3446 309894
Villar Focchiardo TO 19 2042 311936
Collegno TO 20 49905 361841
Villarbasse TO 20 3509 365350
Bruzolo TO 20 1524 366874
Groscavallo TO 20 204 367078
Giaveno TO 20 16455 383533

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Torino (890529 inhabitants)
32 Km NW of Moncalieri (57294 inhabitants)
71 Km W of Asti (76202 inhabitants)
92 Km N of Cuneo (56081 inhabitants)
97 Km W of Novara (104380 inhabitants)
100 Km W of Alessandria (93943 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
Bulletin
Rev1000 		Md 2.1 1986-08-22
12:13:42		 45.219 7.422 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 33079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-08-22 12:13:42 ± 0.249
Latitude 45.2190 ± 0.0179
Longitude 7.4220 ± 0.0228
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 33079

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) 2677.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 193
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00267
Epicentral distance of station farthest from the epicenter (degree) 0.00510
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 33079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:33:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.RRL.Z. 1986-08-22T12:14:01.10 10.0 undecidable manual SG 236 0.5439 -0.43 0.6
--.ORX.Z. 1986-08-22T12:14:01.90 10.0 undecidable manual SG 43 0.5661 -0.57 0.4
--.BN9.Z. 1986-08-22T12:14:01.00 10.0 undecidable manual SG 252 0.5439 -0.86 0.3
--.BN9.Z. 1986-08-22T12:13:54.00 10.0 undecidable manual PG 252 0.5439 0.42 1.4
--.RRL.Z. 1986-08-22T12:13:53.60 10.0 undecidable manual PG 236 0.5439 0.21 1.9
--.ORX.Z. 1986-08-22T12:13:53.80 10.0 undecidable manual PG 43 0.5661 -0.13 2
--.LSD.Z. 1986-08-22T12:13:53.40 10.0 undecidable manual SG 321 0.2997 -0.52 0.5
--.LSD.Z. 1986-08-22T12:13:49.60 10.0 undecidable manual PG 321 0.2997 0.61 1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download