Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.3 on date 26-01-1989 and time 22:18:15 (Italy) in region 1 km E Frassino (CN)

A magnitude Md 2.3 earthquake occured in region: 1 km E Frassino (CN), on

  • 26-01-1989 21:18:15 (UTC)
  • 26-01-1989 22:18:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5780, 7.2930 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
Frassino CN 1 265 265
Melle CN 3 292 557
Brossasco CN 6 1084 1641
Valmala CN 6 52 1693
Isasca CN 7 76 1769
Gambasca CN 7 371 2140
Sanfront CN 8 2395 4535
Martiniana Po CN 8 734 5269
Sampeyre CN 8 1022 6291
Venasca CN 8 1437 7728
Rifreddo CN 9 1078 8806
Brondello CN 9 290 9096
San Damiano Macra CN 10 430 9526
Cartignano CN 11 190 9716
Revello CN 12 4262 13978
Pagno CN 12 585 14563
Rossana CN 12 908 15471
Roccabruna CN 12 1585 17056
Paesana CN 12 2784 19840
Macra CN 12 59 19899
Castellar CN 13 295 20194
Villar San Costanzo CN 13 1547 21741
Piasco CN 13 2774 24515
Envie CN 13 2074 26589
Dronero CN 14 7035 33624
Oncino CN 14 76 33700
Celle di Macra CN 14 100 33800
Ostana CN 15 83 33883
Verzuolo CN 15 6459 40342
Costigliole Saluzzo CN 15 3375 43717
Stroppo CN 15 103 43820
Manta CN 16 3787 47607
Busca CN 16 10181 57788
Elva CN 17 97 57885
Barge CN 17 7774 65659
Montemale di Cuneo CN 17 241 65900
Crissolo CN 17 168 66068
Pradleves CN 18 250 66318
Saluzzo CN 18 16960 83278
Casteldelfino CN 18 157 83435
Monterosso Grana CN 19 505 83940
Castelmagno CN 20 66 84006
Villafalletto CN 20 2925 86931
Valgrana CN 20 786 87717

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of Cuneo (56081 inhabitants)
56 Km SW of Moncalieri (57294 inhabitants)
63 Km SW of Torino (890529 inhabitants)
81 Km W of Asti (76202 inhabitants)
93 Km NW of Sanremo (54807 inhabitants)
99 Km W of Savona (61345 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 2.3
M 2.5 		1989-01-26
21:18:15		 44.578 7.293 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 86149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-01-26 21:18:15 ± 0.152
Latitude 44.5780 ± 0.0095
Longitude 7.2930 ± 0.0149
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 86149

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) 1583.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.00712
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 86149
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:20:52

M:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 86149
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(km) Takeoff_angle Residual Weight
--.IMI.Z. 1989-01-26T21:18:41.11 10.0 undecidable manual SG 146 0.7881 -1.45 0
--.FIN.Z. 1989-01-26T21:18:40.72 10.0 undecidable manual SG 119 0.7437 -0.48 0.4
--.RSP.Z. 1989-01-26T21:18:35.90 10.0 undecidable manual SG 357 0.5661 -0.43 0.5
--.ROB.Z. 1989-01-26T21:18:33.00 10.0 undecidable manual SG 123 0.4995 -0.05 0.7
--.RRL.Z. 1989-01-26T21:18:32.29 10.0 undecidable manual SG 313 0.4995 -0.78 0.2
--.FIN.Z. 1989-01-26T21:18:30.41 10.0 undecidable manual PG 119 0.7437 0.2 1.3
--.IMI.Z. 1989-01-26T21:18:30.69 10.0 undecidable manual PG 146 0.7881 -0.3 1.2
--.RSP.Z. 1989-01-26T21:18:27.90 10.0 undecidable manual PG 357 0.5661 0.17 1.6
--.ROB.Z. 1989-01-26T21:18:26.00 10.0 undecidable manual PG 123 0.4995 0.5 1.1
--.STV.Z. 1989-01-26T21:18:26.92 10.0 undecidable manual SG 175 0.3219 -0.68 0.3
--.RRL.Z. 1989-01-26T21:18:25.44 10.0 undecidable manual PG 313 0.4995 -0.07 1.8
--.STV.Z. 1989-01-26T21:18:22.41 10.0 undecidable manual PG 175 0.3219 0.05 1.9
--.PZZ.Z. 1989-01-26T21:18:21.36 10.0 undecidable manual SG 241 0.1554 -0.71 0.3
--.DOI.Z. 1989-01-26T21:18:20.00 10.0 undecidable manual SG 204 0.0777 0.14 1.1
--.PZZ.Z. 1989-01-26T21:18:19.10 10.0 undecidable manual PG 241 0.1554 -0.05 1.9
--.DOI.Z. 1989-01-26T21:18:18.50 10.0 negative manual PG 204 0.0777 0.62 1.7
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