Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 17-07-1993 and time 02:53:32 (UTC) in region 2 km S Frassino (CN)

A magnitude Md 2.5 earthquake occured in region: 2 km S Frassino (CN), on

  • 17-07-1993 02:53:32 (UTC)
  • 17-07-1993 04:53:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5520, 7.2850 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 2 265 265
Melle CN 3 292 557
Valmala CN 5 52 609
Brossasco CN 6 1084 1693
San Damiano Macra CN 7 430 2123
Cartignano CN 8 190 2313
Sampeyre CN 8 1022 3335
Isasca CN 9 76 3411
Venasca CN 9 1437 4848
Roccabruna CN 10 1585 6433
Gambasca CN 10 371 6804
Macra CN 10 59 6863
Martiniana Po CN 11 734 7597
Villar San Costanzo CN 11 1547 9144
Sanfront CN 11 2395 11539
Brondello CN 11 290 11829
Celle di Macra CN 11 100 11929
Dronero CN 11 7035 18964
Rossana CN 12 908 19872
Rifreddo CN 12 1078 20950
Pagno CN 14 585 21535
Stroppo CN 14 103 21638
Piasco CN 14 2774 24412
Revello CN 14 4262 28674
Castellar CN 14 295 28969
Montemale di Cuneo CN 14 241 29210
Pradleves CN 15 250 29460
Paesana CN 15 2784 32244
Elva CN 15 97 32341
Busca CN 16 10181 42522
Oncino CN 16 76 42598
Costigliole Saluzzo CN 16 3375 45973
Envie CN 16 2074 48047
Monterosso Grana CN 16 505 48552
Verzuolo CN 17 6459 55011
Castelmagno CN 17 66 55077
Ostana CN 17 83 55160
Manta CN 18 3787 58947
Valgrana CN 18 786 59733
Casteldelfino CN 18 157 59890
Marmora CN 18 68 59958
Caraglio CN 19 6836 66794
Crissolo CN 19 168 66962
Canosio CN 19 80 67042
Saluzzo CN 20 16960 84002
Barge CN 20 7774 91776
Prazzo CN 20 170 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)
82 Km W of Asti (76202 inhabitants)
91 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 2.5
ML-VAX 1.6 		1993-07-17
02:53:32		 44.552 7.285 10 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 191159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-07-17 02:53:32 ± 0.173
Latitude 44.5520 ± 0.0091
Longitude 7.2850 ± 0.0170
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 191159

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) 1685.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
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) 0.01198
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 191159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:59:33

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 191159
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
--.LMR.Z. 1993-07-17T02:54:15.90 10.0 undecidable manual SN 204 1.332 0.48 0.4
--.FRF.Z. 1993-07-17T02:54:08.60 10.0 undecidable manual SN 205 1.0878 -0.94 0.3
--.LPL.Z. 1993-07-17T02:54:07.10 10.0 undecidable manual SN 338 1.0323 -1.22 0.1
--.LPG.Z. 1993-07-17T02:54:06.30 10.0 undecidable manual SG 338 1.0101 -1.36 0.1
--.PCP.Z. 1993-07-17T02:54:02.90 10.0 undecidable manual SG 90 0.888 -0.9 0.3
--.LSD.Z. 1993-07-17T02:54:02.60 10.0 undecidable manual SG 354 0.9102 -1.6 0
--.LMR.Z. 1993-07-17T02:53:59.00 10.0 undecidable manual PN 204 1.332 1.51 0.1
--.CKI.Z. 1993-07-17T02:53:58.39 10.0 undecidable manual SG 100 0.7215 0.26 0.7
--.IMI.Z. 1993-07-17T02:53:58.70 10.0 undecidable manual SG 145 0.777 -1.16 0.2
--.FIN.Z. 1993-07-17T02:53:57.50 10.0 undecidable manual SG 117 0.7326 -1.37 0.1
--.LRG.Z. 1993-07-17T02:53:57.80 10.0 undecidable manual PN 211 1.2765 1.09 0.4
--.BNI.Z. 1993-07-17T02:53:56.43 10.0 undecidable manual SG 319 0.6549 0.27 0.7
--.SBF.Z. 1993-07-17T02:53:56.70 10.0 undecidable manual SG 171 0.6882 -0.64 0.5
--.FRF.Z. 1993-07-17T02:53:54.40 10.0 undecidable manual PN 205 1.0878 0.31 1.4
--.RSP.Z. 1993-07-17T02:53:53.20 10.0 undecidable manual SG 358 0.5883 -1.05 0.3
--.LPG.Z. 1993-07-17T02:53:53.00 10.0 undecidable manual PG 338 1.0101 -0.01 1.6
--.LPL.Z. 1993-07-17T02:53:53.70 10.0 undecidable manual PN 338 1.0323 0.31 1.4
--.LSD.Z. 1993-07-17T02:53:51.90 10.0 undecidable manual PG 354 0.9102 0.08 1.7
--.PCP.Z. 1993-07-17T02:53:51.32 10.0 undecidable manual PG 90 0.888 0.54 1.3
--.RRL.Z. 1993-07-17T02:53:50.40 10.0 undecidable manual SG 316 0.4995 -1.02 0.3
--.ROB.Z. 1993-07-17T02:53:50.00 10.0 undecidable manual SG 120 0.4884 -0.66 0.5
--.CKI.Z. 1993-07-17T02:53:48.43 10.0 undecidable manual PG 100 0.7215 0.93 0.8
--.IMI.Z. 1993-07-17T02:53:48.62 10.0 undecidable manual PG 145 0.777 0.12 1.9
--.SBF.Z. 1993-07-17T02:53:47.50 10.0 undecidable manual PG 171 0.6882 0.45 1.6
--.FIN.Z. 1993-07-17T02:53:47.70 10.0 undecidable manual PG 117 0.7326 -0.23 1.8
--.BNI.Z. 1993-07-17T02:53:46.61 10.0 undecidable manual PG 319 0.6549 0.24 1.9
--.RSP.Z. 1993-07-17T02:53:45.32 10.0 undecidable manual PG 358 0.5883 0.05 2
--.BHB.Z. 1993-07-17T02:53:44.30 10.0 undecidable manual SG 356 0.2775 0.23 0.8
--.ENR.Z. 1993-07-17T02:53:44.40 10.0 undecidable manual SG 163 0.333 -1.46 0.1
--.STV.Z. 1993-07-17T02:53:43.80 10.0 undecidable manual SG 173 0.2997 -0.87 0.4
--.ROB.Z. 1993-07-17T02:53:43.63 10.0 undecidable manual PG 120 0.4884 0.44 1.7
--.RRL.Z. 1993-07-17T02:53:43.81 10.0 undecidable manual PG 316 0.4995 0.18 2
--.BHB.Z. 1993-07-17T02:53:40.24 10.0 undecidable manual PG 356 0.2775 0.85 0.9
--.ENR.Z. 1993-07-17T02:53:40.29 10.0 undecidable manual PG 163 0.333 -0.13 2
--.STV.Z. 1993-07-17T02:53:39.65 10.0 undecidable manual PG 173 0.2997 -0.09 2
--.PZZ.Z. 1993-07-17T02:53:38.90 10.0 undecidable manual SG 250 0.1332 -0.38 0.7
--.PZZ.Z. 1993-07-17T02:53:36.53 10.0 undecidable manual PG 250 0.1332 -0.09 2
--.DOI.Z. 1993-07-17T02:53:35.69 10.0 undecidable manual SG 210 0.0555 -1.25 0.2
--.DOI.Z. 1993-07-17T02:53:35.10 10.0 negative manual PG 210 0.0555 -0.26 3.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download