Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 4.0 on date 28-02-1985 and time 22:33:00 (Italy) in region France [Land]

A magnitude M 4.0 earthquake occured in region: France [Land], on

  • 28-02-1985 21:33:00 (UTC)
  • 28-02-1985 22:33:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 47.63, 7.25 at 4 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 4.0 1985-02-28
21:33:00		 47.63 7.25 4 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 2789
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-28 21:33:00 ± 0.392
Latitude 47.63 ± 0.02
Longitude 7.25 ± 0.02
Depth (km) 4 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2789

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) 2247.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 80
Number of defining phases 80
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.0021
Epicentral distance of station farthest from the epicenter (degree) 0.04922
Number of stations at which the event was observed 57
Number of stations from which data was used for origin computation 57
Magnitude information

M:4

Field Value
Value 4
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 2789
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 Takeoff_angle Residual Weight
--.DRE.Z. 1985-02-28T21:35:01.70 10.0 undecidable manual SN 106 0.0414 -0.61 0.4
--.BAD.Z. 1985-02-28T21:34:54.50 10.0 undecidable manual SN 106 0.0389 -1.13 0.3
--.BOO.Z. 1985-02-28T21:34:53.40 10.0 undecidable manual SN 106 0.0377 0.67 0.4
--.MPR.Z. 1985-02-28T21:34:53.40 10.0 undecidable manual SN 107 0.0373 1.72 0.1
--.ZOU.Z. 1985-02-28T21:34:49.60 10.0 undecidable manual SN 103 0.0363 0.66 0.7
--.CAE.Z. 1985-02-28T21:34:46.80 10.0 undecidable manual SN 112 0.0351 1.15 0.3
--.DDS.Z. 1985-02-28T21:34:27.30 10.0 undecidable manual SN 121 0.0289 -2.05 0
--.PAN.Z. 1985-02-28T21:34:27.40 10.0 undecidable manual SN 118 0.0287 -1.42 0.2
--.ENR.Z. 1985-02-28T21:34:33.50 10.0 undecidable manual SN 178 0.0306 -0.36 0.6
--.STV.Z. 1985-02-28T21:34:32.00 10.0 undecidable manual SN 179 0.0304 -1.23 0.2
--.ROB.Z. 1985-02-28T21:34:32.00 10.0 undecidable manual SN 172 0.0301 -0.68 0.5
--.VEA.Z. 1985-02-28T21:34:29.00 10.0 undecidable manual SN 148 0.0287 0.21 0.6
--.GRR.Z. 1985-02-28T21:34:23.50 10.0 undecidable manual PN 281 0.0492 0.48 1
--.FLN.Z. 1985-02-28T21:34:22.30 10.0 undecidable manual PN 285 0.0474 2.02 0.1
--.RNI.Z. 1985-02-28T21:34:21.40 10.0 undecidable manual SN 124 0.0256 0.79 0.5
--.MFF.Z. 1985-02-28T21:34:18.80 10.0 undecidable manual PN 261 0.0461 0.45 1.1
--.VOY.Z. 1985-02-28T21:34:13.30 10.0 positive manual PN 107 0.0433 -0.64 2
--.DRE.Z. 1985-02-28T21:34:10.40 10.0 undecidable manual PN 106 0.0414 -0.62 1.1
--.RJF.Z. 1985-02-28T21:34:10.20 10.0 undecidable manual PN 241 0.0412 -0.55 1.1
--.RBL.Z. 1985-02-28T21:34:09.50 10.0 undecidable manual PN 103 0.0401 0.38 1.2
--.CAF.Z. 1985-02-28T21:34:08.60 10.0 undecidable manual PN 235 0.0403 -0.88 0.8
--.BAD.Z. 1985-02-28T21:34:07.00 10.0 undecidable manual PN 106 0.0389 -0.16 1.4
--.BD1.Z. 1985-02-28T21:34:07.00 10.0 undecidable manual PN 145 0.0383 0.67 1.1
--.BOO.Z. 1985-02-28T21:34:05.50 10.0 undecidable manual PN 106 0.0377 0.02 1.4
--.MPR.Z. 1985-02-28T21:34:05.00 10.0 undecidable manual PN 107 0.0373 0.13 1.4
--.LSF.Z. 1985-02-28T21:34:04.40 10.0 undecidable manual PN 252 0.0372 -0.32 1.3
--.VAI.N. 1985-02-28T21:34:03.40 10.0 undecidable manual SN 149 0.0184 1.8 0.1
--.ZOU.Z. 1985-02-28T21:34:03.90 10.0 undecidable manual PN 103 0.0363 0.6 1.1
--.RCL.Z. 1985-02-28T21:34:02.70 10.0 undecidable manual PN 109 0.0357 0.33 1.4
--.FO1.Z. 1985-02-28T21:34:02.00 10.0 undecidable manual PN 103 0.0351 0.59 1.2
--.ORX.Z. 1985-02-28T21:34:01.80 10.0 undecidable manual SN 165 0.0185 -0.09 0.7
--.CAE.Z. 1985-02-28T21:34:01.50 10.0 undecidable manual PN 112 0.0351 0.1 1.5
--.IMP.Z. 1985-02-28T21:33:59.60 10.0 undecidable manual PN 173 0.0336 0.42 1.3
--.TCF.Z. 1985-02-28T21:33:58.50 10.0 undecidable manual PN 250 0.0332 -0.05 1.5
--.BVT.Z. 1985-02-28T21:33:58.10 10.0 undecidable manual PN 149 0.0325 0.52 1.3
--.FIN.Z. 1985-02-28T21:33:56.20 10.0 undecidable manual PN 168 0.0313 0.51 1.3
--.STV.Z. 1985-02-28T21:33:56.00 10.0 undecidable manual PN 179 0.0304 1.77 0.2
--.CTI.Z. 1985-02-28T21:33:55.00 10.0 undecidable manual PN 116 0.0305 0.49 1.4
--.ROB.Z. 1985-02-28T21:33:54.40 10.0 undecidable manual PN 172 0.0301 0.49 1.4
--.CK1.Z. 1985-02-28T21:33:53.00 10.0 undecidable manual PN 167 0.0295 0.02 1.6
--.ENR.Z. 1985-02-28T21:33:53.50 10.0 undecidable manual PN 178 0.0306 -1.09 0.8
--.VEA.Z. 1985-02-28T21:33:52.00 10.0 undecidable manual PN 148 0.0287 0.34 1.5
--.DDS.Z. 1985-02-28T21:33:52.80 10.0 undecidable manual PN 121 0.0289 0.81 1.1
--.PAN.Z. 1985-02-28T21:33:52.60 10.0 undecidable manual PN 118 0.0287 0.92 1
--.CAV.Z. 1985-02-28T21:33:51.60 10.0 undecidable manual PN 113 0.0285 0.24 1.6
--.BGF.Z. 1985-02-28T21:33:51.30 10.0 undecidable manual PN 252 0.0286 -0.28 1.6
--.PAG.Z. 1985-02-28T21:33:50.40 10.0 undecidable manual PN 118 0.0269 1.52 0.4
--.SAL.Z. 1985-02-28T21:33:49.50 10.0 undecidable manual PN 130 0.0272 0.13 1.7
--.RNI.Z. 1985-02-28T21:33:48.00 10.0 undecidable manual PN 124 0.0256 1.05 0.8
--.AVF.Z. 1985-02-28T21:33:43.70 10.0 undecidable manual PN 254 0.0249 -2.3 0.1
--.BG1.Z. 1985-02-28T21:33:43.20 10.0 undecidable manual PN 136 0.0225 0.95 0.9
--.SSF.Z. 1985-02-28T21:33:43.70 10.0 undecidable manual PN 258 0.0234 0.14 1.6
--.SMF.Z. 1985-02-28T21:33:41.60 10.0 undecidable manual PN 248 0.0227 -0.86 1.1
--.LOR.Z. 1985-02-28T21:33:39.10 10.0 undecidable manual PN 262 0.0209 -0.65 1.3
--.LBF.Z. 1985-02-28T21:33:38.80 10.0 undecidable manual PN 255 0.0207 -0.8 1.1
--.ORO.Z. 1985-02-28T21:33:36.80 10.0 undecidable manual PN 165 0.0185 0.6 1.3
--.ORX.Z. 1985-02-28T21:33:36.50 10.0 undecidable manual PN 165 0.0185 0.38 1.5
--.VAI.N. 1985-02-28T21:33:35.70 10.0 undecidable manual PN 149 0.0184 -0.26 1.6
--.VDL.Z. 1985-02-28T21:33:33.70 10.0 undecidable manual PN 126 0.017 -0.17 1.6
--.MMK.Z. 1985-02-28T21:33:30.50 10.0 undecidable manual PN 162 0.0148 -0.04 1.7
--.EMS.Z. 1985-02-28T21:33:29.10 10.0 undecidable manual PN 188 0.0141 -0.38 1.5
--.DIX.Z. 1985-02-28T21:33:29.20 10.0 undecidable manual PN 176 0.0139 0.02 1.7
--.SAX.Z. 1985-02-28T21:33:26.50 10.0 undecidable manual PN 104 0.0131 -1.48 0.4
--.LLS.Z. 1985-02-28T21:33:26.30 10.0 undecidable manual PN 122 0.0128 -1.14 0.7
--.STG.Z. 1985-02-28T21:33:25.30 10.0 undecidable manual PN 212 0.0116 -0.3 1.6
--.MUO.Z. 1985-02-28T21:33:22.10 10.0 undecidable manual PN 123 0.0104 -1.65 0.3
--.CDF.Z. 1985-02-28T21:33:16.30 10.0 undecidable manual PG 1 0.007 -0.88 1
--.HAU.Z. 1985-02-28T21:33:16.80 10.0 undecidable manual PG 302 0.0064 0.9 1
--.NEC.Z. 1985-02-28T21:33:15.20 10.0 undecidable manual PG 198 0.0058 0.38 1.5
--.ZUL.Z. 1985-02-28T21:33:14.60 10.0 undecidable manual PG 100 0.007 -2.56 0
--.BSF.Z. 1985-02-28T21:33:10.30 10.0 undecidable manual PG 303 0.0033 1.09 0.8
--.BBS.Z. 1985-02-28T21:33:05.80 10.0 undecidable manual PG 133 0.0021 -0.54 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download