Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 2.4 on date 05-02-1985 and time 14:39:27 (Italy) in region 1 km SE Castelbianco (SV)

A magnitude M 2.4 earthquake occured in region: 1 km SE Castelbianco (SV), on

  • 05-02-1985 13:39:27 (UTC)
  • 05-02-1985 14:39:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1050, 8.0880 at 1 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Castelbianco SV 1 330 330
Zuccarello SV 2 309 639
Arnasco SV 3 645 1284
Vendone SV 4 388 1672
Castelvecchio di Rocca Barbena SV 4 145 1817
Erli SV 4 245 2062
Onzo SV 5 219 2281
Nasino SV 5 207 2488
Cisano sul Neva SV 5 2085 4573
Ortovero SV 6 1586 6159
Alto CN 7 128 6287
Aquila d'Arroscia IM 7 166 6453
Balestrino SV 7 595 7048
Ranzo IM 8 557 7605
Garlenda SV 8 1254 8859
Villanova d'Albenga SV 8 2657 11516
Casanova Lerrone SV 9 749 12265
Borghetto d'Arroscia IM 10 456 12721
Toirano SV 10 2644 15365
Bardineto SV 10 756 16121
Caprauna CN 11 104 16225
Boissano SV 11 2492 18717
Garessio CN 11 3244 21961
Ceriale SV 12 5561 27522
Stellanello SV 12 808 28330
Testico SV 12 196 28526
Albenga SV 12 24213 52739
Vessalico IM 12 282 53021
Borghetto Santo Spirito SV 12 4948 57969
Alassio SV 13 10934 68903
Armo IM 14 111 69014
Cesio IM 14 283 69297
Loano SV 14 11407 80704
Giustenice SV 15 977 81681
Calizzano SV 15 1475 83156
Ormea CN 15 1617 84773
Pieve di Teco IM 15 1338 86111
Villa Faraldi IM 15 444 86555
Laigueglia SV 16 1810 88365
Caravonica IM 16 282 88647
Magliolo SV 16 974 89621
Pietra Ligure SV 16 8992 98613
Chiusanico IM 16 607 99220
Tovo San Giacomo SV 17 2582 101802
Priola CN 17 701 102503
Andora SV 17 7552 110055
Chiusavecchia IM 17 577 110632
Diano Arentino IM 18 722 111354
Pornassio IM 18 685 112039
Lucinasco IM 18 272 112311
Borgomaro IM 18 865 113176
Borgio Verezzi SV 18 2205 115381
Aurigo IM 19 347 115728
Pontedassio IM 19 2323 118051
Diano San Pietro IM 19 1145 119196
Rezzo IM 20 366 119562
San Bartolomeo al Mare IM 20 3129 122691
Rialto SV 20 564 123255
Cervo IM 20 1187 124442
Diano Castello IM 20 2214 126656

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SW of Savona (61345 inhabitants)
40 Km NE of Sanremo (54807 inhabitants)
53 Km SE of Cuneo (56081 inhabitants)
76 Km W of Genova (586655 inhabitants)
89 Km S of Asti (76202 inhabitants)
99 Km SW of Alessandria (93943 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 		M 2.4 1985-02-05
13:39:27		 44.105 8.088 1 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 1169
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-05 13:39:27 ± 0.138
Latitude 44.1050 ± 0.0024
Longitude 8.0880 ± 0.0053
Depth (km) 1 ± 12 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1169

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) 501.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00113
Epicentral distance of station farthest from the epicenter (degree) 0.00219
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

M:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1169
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:50:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ROB.Z. 1985-02-05T13:39:37.00 10.0 undecidable manual SG 322 0.2442 -0.17 0.2
--.IMP.Z. 1985-02-05T13:39:36.60 10.0 undecidable manual SG 216 0.2331 0.02 0.7
--.ROB.Z. 1985-02-05T13:39:33.20 10.0 undecidable manual PG 322 0.2442 0.1 1.1
--.FIN.Z. 1985-02-05T13:39:32.70 10.0 undecidable manual SG 40 0.1221 -0.04 0.7
--.IMP.Z. 1985-02-05T13:39:32.70 10.0 undecidable manual PG 216 0.2331 -0.06 1.5
--.FIN.Z. 1985-02-05T13:39:30.50 10.0 undecidable manual PG 40 0.1221 -0.04 1.8
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