Earthquake with magnitude of Md 2.5 on date 01-02-1985 and time 08:11:51 (Italy) in region 1 km S Aurigo (IM)

A magnitude Md 2.5 earthquake occured in region: 1 km S Aurigo (IM), on

  • 01-02-1985 07:11:51 (UTC)
  • 01-02-1985 08:11:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.97, 7.92 at 6 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Aurigo IM 1 347 347
Borgomaro IM 2 865 1212
Lucinasco IM 3 272 1484
Caravonica IM 4 282 1766
Carpasio IM 5 168 1934
Chiusavecchia IM 5 577 2511
Vasia IM 5 389 2900
PrelĂ  IM 5 503 3403
Chiusanico IM 6 607 4010
Cesio IM 6 283 4293
Rezzo IM 7 366 4659
Dolcedo IM 8 1415 6074
Montalto Ligure IM 8 377 6451
Pontedassio IM 8 2323 8774
Pieve di Teco IM 9 1338 10112
Badalucco IM 9 1136 11248
Vessalico IM 9 282 11530
Pietrabruna IM 9 501 12031
Testico SV 10 196 12227
Diano Arentino IM 10 722 12949
Civezza IM 11 609 13558
Borghetto d'Arroscia IM 11 456 14014
Stellanello SV 12 808 14822
Pornassio IM 12 685 15507
Molini di Triora IM 12 617 16124
Casanova Lerrone SV 12 749 16873
Ranzo IM 12 557 17430
Diano San Pietro IM 13 1145 18575
Castellaro IM 13 1256 19831
Imperia IM 13 42034 61865
Diano Castello IM 13 2214 64079
Triora IM 13 355 64434
Costarainera IM 13 828 65262
Armo IM 13 111 65373
Cipressa IM 13 1290 66663
Terzorio IM 13 216 66879
Pompeiana IM 13 823 67702
Montegrosso Pian Latte IM 14 118 67820
San Lorenzo al Mare IM 14 1297 69117
Villa Faraldi IM 14 444 69561
Cosio d'Arroscia IM 14 221 69782
Aquila d'Arroscia IM 14 166 69948
Diano Marina IM 15 5977 75925
Mendatica IM 15 185 76110
Santo Stefano al Mare IM 15 2197 78307
Onzo SV 15 219 78526
Riva Ligure IM 15 2910 81436
San Bartolomeo al Mare IM 15 3129 84565
Taggia IM 15 14116 98681
Ceriana IM 16 1250 99931
Garlenda SV 16 1254 101185
Cervo IM 16 1187 102372
Caprauna CN 16 104 102476
Ortovero SV 16 1586 104062
Alto CN 17 128 104190
Vendone SV 17 388 104578
Andora SV 18 7552 112130
Bajardo IM 18 312 112442
Nasino SV 18 207 112649
Briga Alta CN 19 39 112688
Laigueglia SV 19 1810 114498
Arnasco SV 19 645 115143
Villanova d'Albenga SV 20 2657 117800
Ormea CN 20 1617 119417
Sanremo IM 20 54807 174224
Castelbianco SV 20 330 174554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Sanremo (54807 inhabitants)
56 Km SE of Cuneo (56081 inhabitants)
58 Km SW of Savona (61345 inhabitants)
94 Km SW of Genova (586655 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
Rev 1000 Md 2.5 1985-02-01
07:11:51
43.97 7.92 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 859
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-01 07:11:51 ± 0.362
Latitude 43.97 ± 0.03
Longitude 7.92 ± 0.03
Depth (km) 6 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 859

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) 3610.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00461
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 859
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.STV.Z. 1985-02-01T07:12:10.50 10.0 undecidable manual SG 303 0.0045 -0.4 0.6
--.CK1.Z. 1985-02-01T07:12:10.50 10.0 undecidable manual SG 29 0.0046 -0.57 0.7
--.ENR.Z. 1985-02-01T07:12:09.60 10.0 undecidable manual SG 305 0.004 0.87 0.4
--.ROB.Z. 1985-02-01T07:12:03.30 10.0 undecidable manual SG 353 0.0029 -1.45 0.1
--.CK1.Z. 1985-02-01T07:12:03.20 10.0 undecidable manual PG 29 0.0046 0.26 1.1
--.STV.Z. 1985-02-01T07:12:02.60 10.0 undecidable manual PG 303 0.0045 -0.24 1.6
--.ENR.Z. 1985-02-01T07:12:01.60 10.0 undecidable manual PG 305 0.004 0.01 1.7
--.ROB.Z. 1985-02-01T07:11:59.90 10.0 undecidable manual PG 353 0.0029 0.61 1.5
--.IMP.Z. 1985-02-01T07:11:53.30 10.0 undecidable manual PG 201 0.0005 -0.28 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download