Earthquake with magnitude of Md 3.7 on date 29-08-1985 and time 11:12:40 (UTC) in region 2 km W Villar Perosa (TO)

A magnitude Md 3.7 earthquake occured in region: 2 km W Villar Perosa (TO), on

  • 29-08-1985 11:12:40 (UTC)
  • 29-08-1985 13:12:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.92, 7.23 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
Villar Perosa TO 2 4092 4092
Pramollo TO 2 258 4350
Pinasca TO 2 3051 7401
San Germano Chisone TO 3 1854 9255
Inverso Pinasca TO 3 730 9985
Perosa Argentina TO 5 3285 13270
Pomaretto TO 5 1009 14279
Porte TO 5 1083 15362
Prarostino TO 7 1273 16635
San Pietro Val Lemina TO 7 1448 18083
Roletto TO 8 2009 20092
San Secondo di Pinerolo TO 9 3575 23667
Cantalupa TO 9 2553 26220
Angrogna TO 9 889 27109
Perrero TO 9 659 27768
Pinerolo TO 9 35808 63576
Frossasco TO 10 2864 66440
Torre Pellice TO 11 4551 70991
Roure TO 12 848 71839
Luserna San Giovanni TO 12 7395 79234
Osasco TO 12 1141 80375
Bricherasio TO 12 4616 84991
Lusernetta TO 14 506 85497
Cumiana TO 14 7826 93323
Villar Pellice TO 14 1076 94399
Salza di Pinerolo TO 14 75 94474
Massello TO 14 51 94525
Prali TO 14 246 94771
RorĂ  TO 15 257 95028
Bibiana TO 15 3442 98470
Garzigliana TO 15 572 99042
Bobbio Pellice TO 15 563 99605
Coazze TO 15 3287 102892
Campiglione Fenile TO 16 1390 104282
Buriasco TO 16 1410 105692
Piscina TO 16 3388 109080
Macello TO 16 1229 110309
Giaveno TO 17 16455 126764
Fenestrelle TO 19 544 127308
Cavour TO 19 5545 132853
Valgioie TO 19 951 133804
Bagnolo Piemonte CN 19 6024 139828
Trana TO 20 3877 143705

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km W of Moncalieri (57294 inhabitants)
40 Km W of Torino (890529 inhabitants)
64 Km NW of Cuneo (56081 inhabitants)
77 Km W 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 Md 3.7 1985-08-29
11:12:40
44.92 7.23 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 12419
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-29 11:12:40 ± 0.222
Latitude 44.92 ± 0.02
Longitude 7.23 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 12419

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) 2931.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.00364
Epicentral distance of station farthest from the epicenter (degree) 0.04193
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

Md:3.7

Field Value
Value 3.7
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 12419
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:15:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ROF.Z. 1985-08-29T11:13:57.00 10.0 undecidable manual SN 355 0.0249 0.32 0.4
--.TRI.Z. 1985-08-29T11:13:49.00 10.0 undecidable manual PN? 77 0.0419 -1.48 0
--.FO1.Z. 1985-08-29T11:13:46.00 10.0 undecidable manual PN 64 0.0379 1.6 0.1
--.GWF.Z. 1985-08-29T11:13:42.00 10.0 undecidable manual PN 3 0.0365 -0.26 0.9
--.BVT.Z. 1985-08-29T11:13:36.20 10.0 undecidable manual SN 102 0.017 0.23 0.5
--.CO9.Z. 1985-08-29T11:13:30.00 10.0 undecidable manual SN 94 0.0142 1.44 0.1
--.CTI.Z. 1985-08-29T11:13:30.50 10.0 undecidable manual PN 68 0.0296 -1.27 0.2
--.ROF.Z. 1985-08-29T11:13:24.00 10.0 undecidable manual PN 355 0.0249 -0.46 0.9
--.BD1.Z. 1985-08-29T11:13:21.50 10.0 undecidable manual PN 108 0.0229 -0.05 1.2
--.BVT.Z. 1985-08-29T11:13:12.90 10.0 undecidable manual PN 102 0.017 0.39 1.1
--.CO9.Z. 1985-08-29T11:13:08.00 10.0 undecidable manual PN 94 0.0142 -0.23 1.2
--.VAI.Z. 1985-08-29T11:13:06.00 10.0 negative manual PN 48 0.0129 -0.23 2.4
--.STV.Z. 1985-08-29T11:12:53.40 10.0 undecidable manual PG 173 0.0061 -0.69 1.6
--.DA9.Z. 1985-08-29T11:12:49.80 10.0 undecidable manual PG 177 0.0037 0.45 2.1
--.BN9.Z. 1985-08-29T11:12:49.50 10.0 negative manual PG 288 0.0036 0.36 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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