Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.9 on date 10-02-1989 and time 21:41:42 (Italy) in region 2 km NE Bricherasio (TO)

A magnitude Md 2.9 earthquake occured in region: 2 km NE Bricherasio (TO), on

  • 10-02-1989 20:41:42 (UTC)
  • 10-02-1989 21:41:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.8370, 7.3240 at 5 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
Bricherasio TO 2 4616 4616
Osasco TO 2 1141 5757
Campiglione Fenile TO 4 1390 7147
San Secondo di Pinerolo TO 4 3575 10722
Garzigliana TO 4 572 11294
Bibiana TO 5 3442 14736
Prarostino TO 5 1273 16009
Pinerolo TO 6 35808 51817
Macello TO 6 1229 53046
Luserna San Giovanni TO 7 7395 60441
Lusernetta TO 7 506 60947
Cavour TO 7 5545 66492
Porte TO 7 1083 67575
Angrogna TO 8 889 68464
San Pietro Val Lemina TO 8 1448 69912
Torre Pellice TO 8 4551 74463
Buriasco TO 8 1410 75873
Bagnolo Piemonte CN 9 6024 81897
San Germano Chisone TO 10 1854 83751
Roletto TO 10 2009 85760
Rorà TO 11 257 86017
Villar Perosa TO 11 4092 90109
Frossasco TO 11 2864 92973
Cantalupa TO 12 2553 95526
Pramollo TO 12 258 95784
Piscina TO 12 3388 99172
Barge CN 12 7774 106946
Villar Pellice TO 13 1076 108022
Vigone TO 14 5182 113204
Pinasca TO 14 3051 116255
Cercenasco TO 14 1803 118058
Inverso Pinasca TO 15 730 118788
Scalenghe TO 15 3339 122127
Airasca TO 16 3794 125921
Villafranca Piemonte TO 16 4729 130650
Cardè CN 16 1122 131772
Bobbio Pellice TO 17 563 132335
Cumiana TO 17 7826 140161
Perosa Argentina TO 17 3285 143446
Paesana CN 17 2784 146230
Pomaretto TO 17 1009 147239
Envie CN 18 2074 149313
Moretta CN 19 4136 153449
Ostana CN 19 83 153532
Virle Piemonte TO 20 1206 154738
Torre San Giorgio CN 20 730 155468
Volvera TO 20 8840 164308
Perrero TO 20 659 164967

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Moncalieri (57294 inhabitants)
39 Km SW of Torino (890529 inhabitants)
52 Km NW of Cuneo (56081 inhabitants)
70 Km W of Asti (76202 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		Md 2.9
M 3.0 		1989-02-10
20:41:42		 44.837 7.324 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 86819
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-02-10 20:41:42 ± 0.161
Latitude 44.8370 ± 0.0100
Longitude 7.3240 ± 0.0201
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 86819

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) 1938.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.05011
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitudes information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 86819
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:21:30

M:3.0

Field Value
Value 3.0
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 86819
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:42:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.BGF.Z. 1989-02-10T20:43:18.20 10.0 undecidable manual SN 300 3.5631 -0.48 0.5
--.LOR.Z. 1989-02-10T20:43:15.79 10.0 undecidable manual SN 316 3.4077 0.66 0.4
--.SMF.Z. 1989-02-10T20:43:06.29 10.0 undecidable manual SN 307 3.0192 0.43 0.5
--.DOU.Z. 1989-02-10T20:43:06.40 10.0 undecidable manual PN 341 5.5611 1.07 0.6
--.CVF.Z. 1989-02-10T20:42:54.00 10.0 undecidable manual SN 152 2.5197 0 0.7
--.TCF.Z. 1989-02-10T20:42:43.80 10.0 undecidable manual PN 293 3.8517 1.93 0.3
--.CAF.Z. 1989-02-10T20:42:41.50 10.0 undecidable manual PN 272 3.7185 1.48 0.5
--.BGF.Z. 1989-02-10T20:42:39.00 10.0 undecidable manual PN 300 3.5631 1.16 0.8
--.CDF.Z. 1989-02-10T20:42:38.50 10.0 undecidable manual PN 359 3.5631 0.58 1.2
--.LOR.Z. 1989-02-10T20:42:37.00 10.0 undecidable manual PN 316 3.4077 1.21 0.8
--.SSF.Z. 1989-02-10T20:42:37.60 10.0 undecidable manual PN 310 3.4521 1.21 0.8
--.AVF.Z. 1989-02-10T20:42:36.40 10.0 undecidable manual PN 306 3.3744 1.05 0.9
--.HAU.Z. 1989-02-10T20:42:34.20 10.0 undecidable manual PN 347 3.2301 0.89 1
--.LBF.Z. 1989-02-10T20:42:33.40 10.0 undecidable manual PN 313 3.1524 1.07 0.9
--.BOB.Z. 1989-02-10T20:42:31.10 10.0 undecidable manual SN 91 1.4985 1.38 0.4
--.SMF.Z. 1989-02-10T20:42:31.60 10.0 undecidable manual PN 307 3.0192 1.16 0.9
--.VAI.Z. 1989-02-10T20:42:27.54 10.0 undecidable manual SN 43 1.443 -0.72 0.7
--.FRF.Z. 1989-02-10T20:42:26.00 10.0 undecidable manual SN 200 1.3542 -0.34 0.8
--.CVF.Z. 1989-02-10T20:42:23.20 10.0 undecidable manual PN 152 2.5197 -0.38 1.5
--.SBF.Z. 1989-02-10T20:42:15.00 10.0 undecidable manual SG 174 0.9657 -1.27 0.4
--.ORO.Z. 1989-02-10T20:42:13.46 10.0 undecidable manual SG 29 0.9102 -0.83 0.6
--.CKI.Z. 1989-02-10T20:42:12.00 10.0 undecidable manual SG 120 0.7881 1.51 0.4
--.LMR.Z. 1989-02-10T20:42:12.60 10.0 undecidable manual PN 201 1.6095 1.59 0.8
--.FIN.Z. 1989-02-10T20:42:12.90 10.0 undecidable manual SG 134 0.8769 -0.59 0.7
--.LRG.Z. 1989-02-10T20:42:11.50 10.0 undecidable manual PN 206 1.5318 1.41 1
--.VAI.Z. 1989-02-10T20:42:09.70 10.0 undecidable manual PN 43 1.443 0.34 2
--.BOB.Z. 1989-02-10T20:42:09.92 10.0 undecidable manual PN 91 1.4985 0.35 2
--.FRF.Z. 1989-02-10T20:42:08.40 10.0 undecidable manual PN 200 1.3542 0.78 1.7
--.ROB.Z. 1989-02-10T20:42:05.30 10.0 undecidable manual SG 143 0.6549 -0.88 0.6
--.BNI.Z. 1989-02-10T20:42:02.00 10.0 undecidable manual SG 295 0.4995 0.89 0.6
--.IMI.Z. 1989-02-10T20:42:01.80 10.0 undecidable manual PG 155 1.0101 -0.65 1.7
--.FIN.Z. 1989-02-10T20:42:00.50 10.0 undecidable manual PG 134 0.8769 0.3 2
--.SBF.Z. 1989-02-10T20:42:00.60 10.0 undecidable manual PG 174 0.9657 -1.2 1.2
--.ORO.Z. 1989-02-10T20:42:00.20 10.0 undecidable manual PG 29 0.9102 -0.45 1.9
--.ORX.Z. 1989-02-10T20:41:59.20 10.0 undecidable manual PG 29 0.9213 -1.54 0.9
--.CKI.Z. 1989-02-10T20:41:59.20 10.0 undecidable manual PG 120 0.7881 0.73 1.8
--.ROB.Z. 1989-02-10T20:41:56.30 10.0 undecidable manual PG 143 0.6549 0.33 2
--.LPL.Z. 1989-02-10T20:41:56.50 10.0 undecidable manual PG 328 0.7881 -1.96 0.5
--.LPG.Z. 1989-02-10T20:41:56.20 10.0 undecidable manual PG 328 0.777 -1.83 0.6
--.DOI.Z. 1989-02-10T20:41:54.50 10.0 undecidable manual SG 189 0.333 -0.68 0.7
--.PZZ.Z. 1989-02-10T20:41:54.50 10.0 undecidable manual SG 205 0.3552 -1.82 0.2
--.LSD.Z. 1989-02-10T20:41:54.20 10.0 undecidable manual PG 348 0.6327 -1.2 1.3
--.STV.Z. 1989-02-10T20:41:53.80 10.0 undecidable manual PG 179 0.5883 -0.75 1.6
--.RSP.Z. 1989-02-10T20:41:52.80 10.0 undecidable manual SG 351 0.3108 -1.6 0.4
--.BNI.Z. 1989-02-10T20:41:51.00 10.0 positive manual PG 295 0.4995 -2.05 1
--.DOI.Z. 1989-02-10T20:41:49.70 10.0 undecidable manual PG 189 0.333 0.08 2.1
--.PZZ.Z. 1989-02-10T20:41:49.70 10.0 undecidable manual PG 205 0.3552 -0.58 1.8
--.RSP.Z. 1989-02-10T20:41:48.80 10.0 undecidable manual PG 351 0.3108 -0.38 2
--.RRL.Z. 1989-02-10T20:41:48.80 10.0 undecidable manual PG 282 0.3885 -2.01 0.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download