ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.2 on date 04-02-1985 and time 02:07:00 (Italy) in region 3 km W Piossasco (TO)

A magnitude Md 2.2 earthquake occured in region: 3 km W Piossasco (TO), on

  • 04-02-1985 01:07:00 (UTC)
  • 04-02-1985 02:07:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.99, 7.42 at 9 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
Piossasco TO 3 18589 18589
Cumiana TO 4 7826 26415
Sangano TO 5 3707 30122
Bruino TO 5 8639 38761
Trana TO 6 3877 42638
Reano TO 7 1818 44456
Villarbasse TO 7 3509 47965
Piscina TO 8 3388 51353
Volvera TO 8 8840 60193
Frossasco TO 8 2864 63057
Giaveno TO 8 16455 79512
Buttigliera Alta TO 9 6419 85931
Cantalupa TO 9 2553 88484
Orbassano TO 9 23188 111672
Airasca TO 9 3794 115466
Rivalta di Torino TO 9 19887 135353
Rosta TO 10 4903 140256
Roletto TO 10 2009 142265
Avigliana TO 10 12516 154781
None TO 11 8005 162786
Valgioie TO 12 951 163737
Coazze TO 12 3287 167024
San Pietro Val Lemina TO 12 1448 168472
Scalenghe TO 13 3339 171811
Rivoli TO 13 48791 220602
Buriasco TO 13 1410 222012
Beinasco TO 13 18159 240171
Pinerolo TO 13 35808 275979
Sant'Ambrogio di Torino TO 13 4755 280734
Caselette TO 14 3060 283794
Alpignano TO 14 17008 300802
Candiolo TO 14 5669 306471
Almese TO 15 6401 312872
Grugliasco TO 15 37966 350838
Chiusa di San Michele TO 15 1647 352485
Villar Dora TO 15 2932 355417
Castagnole Piemonte TO 15 2245 357662
Collegno TO 15 49905 407567
Macello TO 15 1229 408796
Cercenasco TO 15 1803 410599
Villar Perosa TO 16 4092 414691
Pianezza TO 16 15152 429843
Piobesi Torinese TO 16 3763 433606
Caprie TO 16 2086 435692
Pinasca TO 16 3051 438743
Porte TO 17 1083 439826
Vaie TO 17 1458 441284
Osasco TO 17 1141 442425
San Secondo di Pinerolo TO 17 3575 446000
Condove TO 17 4638 450638
Inverso Pinasca TO 17 730 451368
Rubiana TO 17 2400 453768
Garzigliana TO 17 572 454340
Vigone TO 17 5182 459522
Vinovo TO 17 14887 474409
San Germano Chisone TO 17 1854 476263
Sant'Antonino di Susa TO 18 4306 480569
Nichelino TO 18 48123 528692
Virle Piemonte TO 18 1206 529898
Prarostino TO 18 1273 531171
Perosa Argentina TO 18 3285 534456
Val della Torre TO 19 3869 538325
Pramollo TO 19 258 538583
San Gillio TO 19 3174 541757
Pomaretto TO 19 1009 542766
La Loggia TO 20 8874 551640
Osasio TO 20 936 552576
Givoletto TO 20 3914 556490

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Moncalieri (57294 inhabitants)
22 Km W of Torino (890529 inhabitants)
62 Km W of Asti (76202 inhabitants)
67 Km N of Cuneo (56081 inhabitants)
94 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
Rev 1000 Md 2.2 1985-02-04
01:07:00
44.99 7.42 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1059
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-04 01:07:00 ± 0.253
Latitude 44.99 ± 0.02
Longitude 7.42 ± 0.04
Depth (km) 9 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1059

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) 4039.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.03197
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 1059
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BGF.Z. 1985-02-04T01:07:54.00 10.0 undecidable manual PN 297 0.032 -1.31 0.3
--.LRG.Z. 1985-02-04T01:07:53.40 10.0 undecidable manual SN 206 0.0154 1.65 0.1
--.FRF.Z. 1985-02-04T01:07:47.20 10.0 undecidable manual SN 201 0.0138 -0.27 0.6
--.FIN.Z. 1985-02-04T01:07:33.30 10.0 undecidable manual SG 144 0.0086 0.08 0.7
--.LMR.Z. 1985-02-04T01:07:32.00 10.0 undecidable manual PN 201 0.0159 1.05 0.6
--.LRG.Z. 1985-02-04T01:07:30.80 10.0 undecidable manual PN 206 0.0154 0.78 0.9
--.FRF.Z. 1985-02-04T01:07:27.50 10.0 undecidable manual PN 201 0.0138 -0.05 1.5
--.ROB.Z. 1985-02-04T01:07:26.70 10.0 undecidable manual SG 154 0.0068 -0.01 0.7
--.IMP.Z. 1985-02-04T01:07:21.00 10.0 undecidable manual PN 162 0.01 -0.93 0.9
--.CK1.Z. 1985-02-04T01:07:18.00 10.0 undecidable manual PG 132 0.0074 1.04 0.8
--.FIN.Z. 1985-02-04T01:07:18.90 10.0 undecidable manual PG 144 0.0086 -0.42 1.4
--.ROB.Z. 1985-02-04T01:07:15.30 10.0 undecidable manual PG 154 0.0068 -0.27 1.6
--.ORO.Z. 1985-02-04T01:07:15.50 10.0 undecidable manual PG 31 0.0067 0.1 1.6
--.STV.Z. 1985-02-04T01:07:13.10 10.0 undecidable manual PG? 185 0.0066 -2.15 0
--.GAI.Z. 1985-02-04T01:07:04.40 10.0 undecidable manual SG 315 0.0006 -0.22 1
--.GAI.Z. 1985-02-04T01:07:02.90 10.0 undecidable manual PG 315 0.0006 0.09 3.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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