Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.0 on date 30-12-1988 and time 20:31:34 (Italy) in region 3 km NW Prazzo (CN)

A magnitude Md 2.0 earthquake occured in region: 3 km NW Prazzo (CN), on

  • 30-12-1988 19:31:34 (UTC)
  • 30-12-1988 20:31:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5090, 7.0460 at 13 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
Prazzo CN 3 170 170
Elva CN 5 97 267
Acceglio CN 6 162 429
Stroppo CN 6 103 532
Canosio CN 7 80 612
Marmora CN 7 68 680
Bellino CN 8 109 789
Casteldelfino CN 9 157 946
Macra CN 11 59 1005
Celle di Macra CN 11 100 1105
Pontechianale CN 13 179 1284
Sampeyre CN 14 1022 2306
Argentera CN 16 83 2389
San Damiano Macra CN 17 430 2819
Castelmagno CN 17 66 2885
Pietraporzio CN 18 77 2962
Sambuco CN 19 92 3054
Frassino CN 20 265 3319
Cartignano CN 20 190 3509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Cuneo (56081 inhabitants)
75 Km SW of Moncalieri (57294 inhabitants)
80 Km SW of Torino (890529 inhabitants)
97 Km NW of Sanremo (54807 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 2.0
M 2.5 		1988-12-30
19:31:34		 44.509 7.046 13 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 84379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-12-30 19:31:34 ± 0.251
Latitude 44.5090 ± 0.0125
Longitude 7.0460 ± 0.0259
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 84379

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) 2475.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 193
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.00850
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 84379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:19:12

M:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 84379
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
--.LSD.Z. 1988-12-30T19:32:05.70 10.0 undecidable manual SG 4 0.9435 -1.04 0.1
--.FIN.Z. 1988-12-30T19:32:03.90 10.0 undecidable manual SG 109 0.8769 -0.63 0.3
--.IMI.Z. 1988-12-30T19:32:02.70 10.0 undecidable manual SG 134 0.8436 -0.84 0.1
--.RSP.Z. 1988-12-30T19:31:57.30 10.0 undecidable manual SG 13 0.6549 -0.07 0.8
--.ROB.Z. 1988-12-30T19:31:56.00 10.0 undecidable manual SG 109 0.6216 -0.26 0.7
--.LSD.Z. 1988-12-30T19:31:53.50 10.0 undecidable manual PG 4 0.9435 0.48 0.9
--.FIN.Z. 1988-12-30T19:31:52.10 10.0 undecidable manual PG 109 0.8769 0.36 1.2
--.IMI.Z. 1988-12-30T19:31:51.20 10.0 undecidable manual PG 134 0.8436 0.03 1.7
--.RRL.Z. 1988-12-30T19:31:49.90 10.0 undecidable manual SG 335 0.444 -0.79 0.2
--.RSP.Z. 1988-12-30T19:31:48.00 10.0 undecidable manual PG 13 0.6549 0.39 1.4
--.ROB.Z. 1988-12-30T19:31:47.60 10.0 undecidable manual PG 109 0.6216 0.63 0.8
--.STV.Z. 1988-12-30T19:31:46.30 10.0 undecidable manual SG 141 0.3219 -0.45 0.5
--.RRL.Z. 1988-12-30T19:31:43.60 10.0 undecidable manual PG 335 0.444 -0.15 2
--.DOI.Z. 1988-12-30T19:31:41.80 10.0 undecidable manual SG 92 0.1332 0.8 0.2
--.STV.Z. 1988-12-30T19:31:41.50 10.0 undecidable manual PG 141 0.3219 0.02 2.1
--.PZZ.Z. 1988-12-30T19:31:38.30 10.0 undecidable manual SG 95 0.0333 -0.42 0.6
--.PZZ.Z. 1988-12-30T19:31:37.30 10.0 undecidable manual PG 95 0.0333 0.45 1.3
--.DOI.Z. 1988-12-30T19:31:37.80 10.0 positive manual PG 92 0.1332 -0.35 3.2
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