Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 1.9 on date 15-10-1988 and time 09:03:40 (UTC) in region 2 km S Frassino (CN)

A magnitude Md 1.9 earthquake occured in region: 2 km S Frassino (CN), on

  • 15-10-1988 09:03:40 (UTC)
  • 15-10-1988 10:03:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5560, 7.2770 at 18 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 2 265 265
Melle CN 4 292 557
Valmala CN 6 52 609
Brossasco CN 7 1084 1693
Sampeyre CN 7 1022 2715
San Damiano Macra CN 8 430 3145
Cartignano CN 9 190 3335
Isasca CN 9 76 3411
Venasca CN 10 1437 4848
Macra CN 10 59 4907
Gambasca CN 10 371 5278
Roccabruna CN 10 1585 6863
Sanfront CN 11 2395 9258
Martiniana Po CN 11 734 9992
Celle di Macra CN 11 100 10092
Brondello CN 11 290 10382
Villar San Costanzo CN 12 1547 11929
Dronero CN 12 7035 18964
Rifreddo CN 12 1078 20042
Rossana CN 13 908 20950
Stroppo CN 13 103 21053
Pagno CN 14 585 21638
Revello CN 14 4262 25900
Piasco CN 15 2774 28674
Paesana CN 15 2784 31458
Castellar CN 15 295 31753
Elva CN 15 97 31850
Montemale di Cuneo CN 15 241 32091
Oncino CN 15 76 32167
Pradleves CN 15 250 32417
Envie CN 16 2074 34491
Busca CN 16 10181 44672
Costigliole Saluzzo CN 17 3375 48047
Monterosso Grana CN 17 505 48552
Ostana CN 17 83 48635
Casteldelfino CN 17 157 48792
Castelmagno CN 17 66 48858
Verzuolo CN 17 6459 55317
Manta CN 18 3787 59104
Marmora CN 18 68 59172
Valgrana CN 18 786 59958
Crissolo CN 19 168 60126
Canosio CN 19 80 60206
Prazzo CN 19 170 60376
Barge CN 19 7774 68150
Caraglio CN 19 6836 74986
Saluzzo CN 20 16960 91946

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Cuneo (56081 inhabitants)
59 Km SW of Moncalieri (57294 inhabitants)
66 Km SW of Torino (890529 inhabitants)
83 Km W of Asti (76202 inhabitants)
91 Km NW of Sanremo (54807 inhabitants)
100 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 1.9
ML-VAX 1.7 		1988-10-15
09:03:40		 44.556 7.277 17 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 78719
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-10-15 09:03:40 ± 0.392
Latitude 44.5560 ± 0.0190
Longitude 7.2770 ± 0.0335
Depth (km) 17 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 78719

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) 3392.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00672
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 78719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:14:02

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 78719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FIN.Z. 1988-10-15T09:04:05.20 10.0 undecidable manual SG 117 0.7437 -1.14 0.1
--.RSP.Z. 1988-10-15T09:04:00.50 10.0 undecidable manual SG 358 0.5883 -0.91 0.2
--.ROB.Z. 1988-10-15T09:03:58.00 10.0 undecidable manual SG 120 0.4995 -0.25 0.7
--.FIN.Z. 1988-10-15T09:03:55.40 10.0 undecidable manual PG 117 0.7437 0.1 1.4
--.RSP.Z. 1988-10-15T09:03:52.50 10.0 undecidable manual PG 358 0.5883 0.04 1.6
--.ROB.Z. 1988-10-15T09:03:51.10 10.0 undecidable manual PG 120 0.4995 0.47 1.3
--.STV.Z. 1988-10-15T09:03:51.30 10.0 undecidable manual SG 172 0.3108 -1.05 0.1
--.STV.Z. 1988-10-15T09:03:47.40 10.0 undecidable manual PG 172 0.3108 0.17 2
--.SOO.Z. 1988-10-15T09:03:46.60 10.0 undecidable manual SG 247 0.1221 -1.01 0.2
--.DOI.Z. 1988-10-15T09:03:45.74 10.0 undecidable manual SG 203 0.0555 -0.45 0.6
--.SOO.Z. 1988-10-15T09:03:44.30 10.0 undecidable manual PG 247 0.1221 -0.19 1.9
--.DOI.Z. 1988-10-15T09:03:44.34 10.0 negative manual PG 203 0.0555 0.67 2
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