Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.4 on date 28-09-1985 and time 14:48:01 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude Md 2.4 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 28-09-1985 12:48:01 (UTC)
  • 28-09-1985 14:48:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2630, 6.8230 at 10 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
Argentera CN 18 83 83
Pietraporzio CN 19 77 160

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km W of Cuneo (56081 inhabitants)
91 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 2.4 1985-09-28
12:48:01		 44.263 6.823 10 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 13869
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-28 12:48:01 ± 0.277
Latitude 44.2630 ± 0.0153
Longitude 6.8230 ± 0.0221
Depth (km) 10 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 13869

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) 2448.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
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) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.03246
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 13869
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:16:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CVF.Z. 1985-09-28T12:49:05.90 10.0 undecidable manual SN 138 2.2422 0.53 0.3
--.BGF.Z. 1985-09-28T12:48:57.90 10.0 undecidable manual PN 311 3.6075 0.97 0.3
--.CVF.Z. 1985-09-28T12:48:40.20 10.0 undecidable manual PN 138 2.2422 1.91 0
--.CK1.Z. 1985-09-28T12:48:36.50 10.0 undecidable manual SN 81 1.0434 -0.3 0.6
--.FIN.Z. 1985-09-28T12:48:33.60 10.0 undecidable manual SG 92 0.9879 -1.51 0.1
--.LMR.Z. 1985-09-28T12:48:32.50 10.0 undecidable manual SG 194 0.9546 -1.41 0.1
--.LRG.Z. 1985-09-28T12:48:31.20 10.0 undecidable manual SG 202 0.8769 -0.08 0.7
--.IMP.Z. 1985-09-28T12:48:30.10 10.0 undecidable manual SG 114 0.8325 -0.16 0.7
--.BN9.Z. 1985-09-28T12:48:27.00 10.0 undecidable manual SG 352 0.7881 -1.73 0.1
--.ROB.Z. 1985-09-28T12:48:27.20 10.0 undecidable manual SG 86 0.7437 -0.16 1
--.FRF.Z. 1985-09-28T12:48:25.20 10.0 undecidable manual SG 190 0.7104 -0.93 0.3
--.CK1.Z. 1985-09-28T12:48:23.00 10.0 undecidable manual PN 81 1.0434 1.21 0.5
--.FIN.Z. 1985-09-28T12:48:20.50 10.0 undecidable manual PG 92 0.9879 -0.32 1.5
--.LMR.Z. 1985-09-28T12:48:19.40 10.0 undecidable manual PG 194 0.9546 -0.73 1.1
--.LRG.Z. 1985-09-28T12:48:18.10 10.0 undecidable manual PG 202 0.8769 -0.51 1.3
--.IMP.Z. 1985-09-28T12:48:17.90 10.0 undecidable manual PG 114 0.8325 -0.12 1.7
--.ROB.Z. 1985-09-28T12:48:16.30 10.0 positive manual PG 86 0.7437 -0.04 3.4
--.ENR.Z. 1985-09-28T12:48:16.40 10.0 undecidable manual SG 94 0.4218 -0.59 0.5
--.BN9.Z. 1985-09-28T12:48:16.50 10.0 undecidable manual PG 352 0.7881 -0.64 1.2
--.FRF.Z. 1985-09-28T12:48:15.40 10.0 undecidable manual PG 190 0.7104 -0.23 1.6
--.DA9.Z. 1985-09-28T12:48:15.50 10.0 undecidable manual SG 51 0.3774 -0.08 0.7
--.SOO.Z. 1985-09-28T12:48:11.60 10.0 undecidable manual SG 39 0.3108 -1.65 0.1
--.DA9.Z. 1985-09-28T12:48:10.00 10.0 undecidable manual PG 51 0.3774 0.45 1.4
--.ENR.Z. 1985-09-28T12:48:10.20 10.0 undecidable manual PG 94 0.4218 -0.16 1.7
--.STV.Z. 1985-09-28T12:48:09.20 10.0 undecidable manual PG 91 0.3552 0.07 3.4
--.SOO.Z. 1985-09-28T12:48:08.00 10.0 undecidable manual PG 39 0.3108 -0.2 1.7
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