Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.2 on date 01-12-1990 and time 19:33:40 (Italy) in region 4 km S Osiglia (SV)

A magnitude Md 2.2 earthquake occured in region: 4 km S Osiglia (SV), on

  • 01-12-1990 18:33:40 (UTC)
  • 01-12-1990 19:33:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2430, 8.1920 at 8 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
Osiglia SV 4 444 444
Bormida SV 5 387 831
Calizzano SV 6 1475 2306
Rialto SV 7 564 2870
Magliolo SV 7 974 3844
Bardineto SV 7 756 4600
Murialdo SV 9 841 5441
Giustenice SV 9 977 6418
Calice Ligure SV 9 1730 8148
Tovo San Giacomo SV 10 2582 10730
Mallare SV 10 1146 11876
Orco Feglino SV 11 890 12766
Massimino SV 12 113 12879
Pallare SV 12 923 13802
Boissano SV 12 2492 16294
Pietra Ligure SV 13 8992 25286
Borgio Verezzi SV 13 2205 27491
Toirano SV 13 2644 30135
Balestrino SV 13 595 30730
Perlo CN 13 116 30846
Castelnuovo di Ceva CN 13 110 30956
Roccavignale SV 13 752 31708
Plodio SV 13 650 32358
Priola CN 13 701 33059
Erli SV 14 245 33304
Bagnasco CN 14 1035 34339
Millesimo SV 14 3383 37722
Vezzi Portio SV 14 809 38531
Loano SV 14 11407 49938
Castelvecchio di Rocca Barbena SV 14 145 50083
Garessio CN 14 3244 53327
Cosseria SV 15 1105 54432
Finale Ligure SV 15 11711 66143
Borghetto Santo Spirito SV 15 4948 71091
Carcare SV 15 5587 76678
Nucetto CN 15 430 77108
Montezemolo CN 16 259 77367
Zuccarello SV 16 309 77676
Altare SV 16 2108 79784
Cengio SV 16 3563 83347
Ceriale SV 17 5561 88908
Battifollo CN 17 219 89127
Priero CN 17 529 89656
Castelbianco SV 17 330 89986
Cisano sul Neva SV 18 2085 92071
Lisio CN 18 201 92272
Spotorno SV 18 3803 96075
Noli SV 18 2736 98811
Quiliano SV 19 7232 106043
Viola CN 19 391 106434
Cairo Montenotte SV 19 13269 119703
Saliceto CN 19 1323 121026
Scagnello CN 19 194 121220
Sale delle Langhe CN 19 486 121706
Nasino SV 19 207 121913
Arnasco SV 19 645 122558
Sale San Giovanni CN 20 183 122741
Vado Ligure SV 20 8336 131077

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km W of Savona (61345 inhabitants)
54 Km E of Cuneo (56081 inhabitants)
57 Km NE of Sanremo (54807 inhabitants)
62 Km W of Genova (586655 inhabitants)
73 Km S of Asti (76202 inhabitants)
82 Km SW of Alessandria (93943 inhabitants)
93 Km SE of Moncalieri (57294 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 2.2
M 2.8 		1990-12-01
18:33:40		 44.243 8.192 8 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 131879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-12-01 18:33:40 ± 0.222
Latitude 44.2430 ± 0.0133
Longitude 8.1920 ± 0.0218
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 131879

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) 2280.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.01651
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 131879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:02:49

M:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 131879
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
--.CDR.Z. 1990-12-01T18:34:35.90 10.0 undecidable manual SN 252 1.8315 1.19 0.2
--.LPG.Z. 1990-12-01T18:34:30.70 10.0 undecidable manual SN 321 1.6095 1.19 0.3
--.LPL.Z. 1990-12-01T18:34:30.80 10.0 undecidable manual SN 321 1.6317 0.73 0.5
--.PGF.Z. 1990-12-01T18:34:28.80 10.0 undecidable manual SN! 160 1.7871 -4.91 0
--.FRF.Z. 1990-12-01T18:34:22.60 10.0 undecidable manual SN 239 1.2987 0.48 0.6
--.RRL.Z. 1990-12-01T18:34:18.28 10.0 undecidable manual SN 304 1.1988 -1.55 0.1
--.RSP.Z. 1990-12-01T18:34:15.97 10.0 undecidable manual SN! 324 1.1211 -1.86 0
--.CDR.Z. 1990-12-01T18:34:13.20 10.0 undecidable manual PN 252 1.8315 1.6 0.2
--.LPG.Z. 1990-12-01T18:34:10.50 10.0 undecidable manual PN 321 1.6095 1.9 0.1
--.LPL.Z. 1990-12-01T18:34:10.60 10.0 undecidable manual PN 321 1.6317 1.68 0.2
--.LRG.Z. 1990-12-01T18:34:09.40 10.0 undecidable manual PN! 239 1.5318 1.88 0
--.LMR.Z. 1990-12-01T18:34:07.30 10.0 undecidable manual PN 233 1.5096 0.06 1.6
--.PZZ.Z. 1990-12-01T18:34:07.12 10.0 undecidable manual SG! 288 0.8214 -1.61 0
--.LSD.Z. 1990-12-01T18:34:06.35 10.0 undecidable manual PN 329 1.4097 0.46 1.5
--.PGF.Z. 1990-12-01T18:34:06.30 10.0 undecidable manual PN! 160 1.7871 -4.73 0
--.FRF.Z. 1990-12-01T18:34:04.80 10.0 undecidable manual PN 239 1.2987 0.46 1.6
--.RRL.Z. 1990-12-01T18:34:03.18 10.0 undecidable manual PN 304 1.1988 0.16 1.8
--.SBF.Z. 1990-12-01T18:34:03.20 10.0 undecidable manual SG 235 0.6549 -0.44 0.7
--.RSP.Z. 1990-12-01T18:34:01.84 10.0 undecidable manual PN 324 1.1211 -0.02 1.9
--.STV.Z. 1990-12-01T18:34:01.10 10.0 undecidable manual SG 271 0.6105 -1.06 0.3
--.ENR.Z. 1990-12-01T18:33:59.18 10.0 undecidable manual SG 268 0.5439 -0.91 0.3
--.BHB.Z. 1990-12-01T18:33:57.52 10.0 undecidable manual PG 312 0.8769 -0.28 1.8
--.PZZ.Z. 1990-12-01T18:33:56.31 10.0 undecidable manual PG 288 0.8214 -0.29 1.8
--.SBF.Z. 1990-12-01T18:33:53.70 10.0 undecidable manual PG 235 0.6549 0.04 2.1
--.PCP.Z. 1990-12-01T18:33:53.33 10.0 undecidable manual SG 40 0.3885 -1.54 0.1
--.IMI.Z. 1990-12-01T18:33:53.64 10.0 undecidable manual SG 212 0.3996 -1.41 0.2
--.STV.Z. 1990-12-01T18:33:52.64 10.0 undecidable manual PG 271 0.6105 -0.17 1.9
--.ENR.Z. 1990-12-01T18:33:51.49 10.0 undecidable manual PG 268 0.5439 -0.13 2
--.ROB.Z. 1990-12-01T18:33:49.44 10.0 undecidable manual SG 284 0.2331 -0.09 0.8
--.PCP.Z. 1990-12-01T18:33:48.00 10.0 undecidable manual PG 40 0.3885 -0.6 1.5
--.IMI.Z. 1990-12-01T18:33:48.10 10.0 undecidable manual PG 212 0.3996 -0.61 1.5
--.CKI.Z. 1990-12-01T18:33:47.50 10.0 undecidable manual SG 19 0.1776 -0.24 0.7
--.ROB.Z. 1990-12-01T18:33:45.64 10.0 undecidable manual PG 284 0.2331 0.13 2.1
--.CKI.Z. 1990-12-01T18:33:44.50 10.0 undecidable manual PG 19 0.1776 0.02 2.1
--.FIN.Z. 1990-12-01T18:33:43.39 10.0 undecidable manual SG 161 0.0333 0.26 0.8
--.FIN.Z. 1990-12-01T18:33:42.50 10.0 undecidable manual PG 161 0.0333 0.22 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