ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of M 2.2 on date 05-02-1985 and time 05:49:59 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude M 2.2 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 05-02-1985 04:49:59 (UTC)
  • 05-02-1985 05:49:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.02, 7.59 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Pigna IM 11 859 859
Castel Vittorio IM 12 287 1146
Triora IM 14 355 1501
Rocchetta Nervina IM 14 298 1799
Briga Alta CN 15 39 1838
Molini di Triora IM 15 617 2455
Isolabona IM 16 679 3134
Bajardo IM 16 312 3446
Apricale IM 16 629 4075
Airole IM 17 407 4482
Olivetta San Michele IM 17 211 4693
Perinaldo IM 18 870 5563
Mendatica IM 18 185 5748
Montegrosso Pian Latte IM 19 118 5866
Dolceacqua IM 19 2074 7940

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Sanremo (54807 inhabitants)
42 Km S of Cuneo (56081 inhabitants)
78 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
Rev 1000 M 2.2 1985-02-05
04:49:59
44.02 7.59 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1119
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-05 04:49:59 ± 0.189
Latitude 44.02 ± 0.01
Longitude 7.59 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1119

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) 1359.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
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) 0.0021
Epicentral distance of station farthest from the epicenter (degree) 0.01546
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

M:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1119
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 Takeoff_angle Residual Weight
--.LMR.Z. 1985-02-05T04:50:35.60 10.0 undecidable manual SG 229 0.0093 0.09 0.6
--.LRG.Z. 1985-02-05T04:50:35.50 10.0 undecidable manual SN 238 0.0095 -0.35 0.6
--.CVF.Z. 1985-02-05T04:50:28.40 10.0 undecidable manual PN 147 0.0155 -1.41 0.1
--.FRF.Z. 1985-02-05T04:50:27.60 10.0 undecidable manual SG 236 0.0074 -0.9 0.3
--.CK1.Z. 1985-02-05T04:50:23.00 10.0 undecidable manual SG 50 0.0057 0.6 0.5
--.LMR.Z. 1985-02-05T04:50:21.00 10.0 undecidable manual PG 229 0.0093 0.55 1
--.LRG.Z. 1985-02-05T04:50:21.10 10.0 undecidable manual PN 238 0.0095 0.45 1.2
--.FRF.Z. 1985-02-05T04:50:17.20 10.0 undecidable manual PG 236 0.0074 0.79 0.8
--.FIN.Z. 1985-02-05T04:50:17.40 10.0 undecidable manual SG 66 0.0043 -0.08 0.9
--.CK1.Z. 1985-02-05T04:50:13.50 10.0 undecidable manual PG 50 0.0057 0.62 1.3
--.ROB.Z. 1985-02-05T04:50:13.50 10.0 undecidable manual SG 35 0.0031 0.3 0.7
--.STV.Z. 1985-02-05T04:50:10.70 10.0 undecidable manual SG 321 0.0027 -1.01 0.2
--.ENR.Z. 1985-02-05T04:50:09.60 10.0 undecidable manual SG 329 0.0021 -0.07 0.7
--.FIN.Z. 1985-02-05T04:50:09.70 10.0 undecidable manual PG 66 0.0043 -0.35 1.9
--.IMP.Z. 1985-02-05T04:50:09.80 10.0 undecidable manual SG 115 0.0021 0.28 0.7
--.ROB.Z. 1985-02-05T04:50:07.70 10.0 undecidable manual PG 35 0.0031 0.12 2.2
--.STV.Z. 1985-02-05T04:50:06.50 10.0 undecidable manual PG 321 0.0027 -0.21 1.9
--.ENR.Z. 1985-02-05T04:50:05.50 10.0 undecidable manual PG 329 0.0021 -0.03 2
--.IMP.Z. 1985-02-05T04:50:04.90 10.0 undecidable manual PG 115 0.0021 -0.55 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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