Earthquake with magnitude of Md 3.1 on date 09-04-1987 and time 10:24:35 (Italy) in region Confine Svizzera Francia (SVIZZERA, FRANCIA)

A magnitude Md 3.1 earthquake occured in region: Confine Svizzera Francia (SVIZZERA, FRANCIA), on

  • 09-04-1987 08:24:35 (UTC)
  • 09-04-1987 10:24:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.34, 6.91 at 5 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

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
Bulletin
Rev1000
Md 3.1
M 3.1
1987-04-09
08:24:35
46.34 6.91 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 44479
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-04-09 08:24:35 ± 0.135
Latitude 46.34 ± 0.01
Longitude 6.91 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 44479

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) 1860.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 48
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.03643
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 39
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 44479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:43:55

M:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 44479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:42:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.DOU.Z. 1987-04-09T08:25:38.70 10.0 undecidable manual PN 338 0.0364 0.42 0.9
--.CAF.Z. 1987-04-09T08:25:32.10 10.0 undecidable manual PN 249 0.033 -0.9 0.6
--.HAU.Z. 1987-04-09T08:25:29.20 10.0 undecidable manual SN 347 0.0153 1.05 0.3
--.TCF.Z. 1987-04-09T08:25:27.70 10.0 undecidable manual PN 270 0.0291 0.55 1
--.MAF.Z. 1987-04-09T08:25:24.40 10.0 undecidable manual PN 269 0.027 0.57 1
--.LMR.Z. 1987-04-09T08:25:23.20 10.0 undecidable manual PN 185 0.0271 -0.9 0.7
--.MOF.Z. 1987-04-09T08:25:23.00 10.0 undecidable manual SN 5 0.0136 -0.64 0.5
--.LRG.Z. 1987-04-09T08:25:22.20 10.0 undecidable manual PN 187 0.0261 -0.42 1.2
--.BGF.Z. 1987-04-09T08:25:21.90 10.0 undecidable manual PN 275 0.0252 0.77 0.9
--.FRF.Z. 1987-04-09T08:25:21.29 10.0 undecidable manual PN 183 0.025 0.4 1.2
--.VAI.Z. 1987-04-09T08:25:20.00 10.0 undecidable manual SN 109 0.0123 -0.32 0.6
--.BNI.Z. 1987-04-09T08:25:19.50 10.0 undecidable manual SN 187 0.0117 0.94 0.4
--.ROF.Z. 1987-04-09T08:25:18.39 10.0 undecidable manual SN 359 0.012 -1 0.3
--.CO9.Z. 1987-04-09T08:25:17.00 10.0 undecidable manual PN? 130 0.0214 1.78 0.1
--.AVF.Z. 1987-04-09T08:25:17.10 10.0 undecidable manual PN 281 0.0223 0.38 1.3
--.RSP.Z. 1987-04-09T08:25:17.20 10.0 undecidable manual SN 168 0.0109 0.67 0.5
--.OSS.Z. 1987-04-09T08:25:15.50 10.0 undecidable manual PN 80 0.0202 1.99 0.1
--.SSF.Z. 1987-04-09T08:25:15.40 10.0 undecidable manual PN 288 0.0219 -0.72 1
--.LOR.Z. 1987-04-09T08:25:13.60 10.0 undecidable manual PN 295 0.0205 -0.35 1.4
--.SMF.Z. 1987-04-09T08:25:12.10 10.0 undecidable manual PN 279 0.0192 0.21 1.5
--.ORO.Z. 1987-04-09T08:25:12.00 10.0 undecidable manual SG 133 0.0092 0.2 0.7
--.CKI.Z. 1987-04-09T08:25:12.40 10.0 undecidable manual PN 152 0.0193 0.27 1.5
--.LBF.Z. 1987-04-09T08:25:11.70 10.0 undecidable manual PN 288 0.0189 0.11 1.6
--.STV.Z. 1987-04-09T08:25:11.30 10.0 undecidable manual PN 171 0.0189 -0.31 1.5
--.ORX.Z. 1987-04-09T08:25:10.30 10.0 undecidable manual SG 133 0.0092 -1.39 0.2
--.DA9.Z. 1987-04-09T08:25:09.80 10.0 undecidable manual PN 172 0.0167 1.73 0.2
--.CDF.Z. 1987-04-09T08:25:09.70 10.0 undecidable manual PN 6 0.0187 -1.5 0.3
--.SLE.Z. 1987-04-09T08:25:08.10 10.0 undecidable manual PN 36 0.016 0.98 0.9
--.LPG.Z. 1987-04-09T08:25:05.20 10.0 undecidable manual SG 187 0.0076 -0.82 0.4
--.HAU.Z. 1987-04-09T08:25:05.29 10.0 undecidable manual PN 347 0.0153 -0.72 1.2
--.ZLA.Z. 1987-04-09T08:25:04.20 10.0 undecidable manual PN 40 0.0136 0.8 1.1
--.LLS.Z. 1987-04-09T08:25:04.00 10.0 undecidable manual PN 69 0.0137 0.41 1.5
--.MOF.Z. 1987-04-09T08:25:03.40 10.0 undecidable manual PN 5 0.0136 -0.01 1.7
--.TMA.Z. 1987-04-09T08:25:03.00 10.0 undecidable manual PN 99 0.0124 1.46 0.4
--.VAI.Z. 1987-04-09T08:25:02.00 10.0 undecidable manual PN 109 0.0123 0.5 1.4
--.RRL.Z. 1987-04-09T08:25:02.80 10.0 undecidable manual PN 183 0.0128 0.61 1.3
--.BSF.Z. 1987-04-09T08:25:01.90 10.0 undecidable manual PN 356 0.0134 -1.17 0.7
--.BNI.Z. 1987-04-09T08:25:01.50 10.0 undecidable manual PN 187 0.0117 1.02 0.8
--.ROF.Z. 1987-04-09T08:25:00.00 10.0 undecidable manual PN 359 0.012 -0.96 0.9
--.RSP.Z. 1987-04-09T08:24:59.30 10.0 undecidable manual PN 168 0.0109 -0.01 1.7
--.ORO.Z. 1987-04-09T08:24:57.00 10.0 undecidable manual PG 133 0.0092 0.42 1.5
--.ORX.Z. 1987-04-09T08:24:56.10 10.0 undecidable manual PG 133 0.0092 -0.42 1.5
--.LSD.Z. 1987-04-09T08:24:53.10 10.0 undecidable manual PG 168 0.0081 -1.06 0.8
--.LPL.Z. 1987-04-09T08:24:52.50 10.0 undecidable manual PG 188 0.0074 -0.43 1.5
--.LPG.Z. 1987-04-09T08:24:52.70 10.0 undecidable manual PG 187 0.0076 -0.54 1.4
--.MMK.Z. 1987-04-09T08:24:51.29 10.0 undecidable manual PG 111 0.007 -0.72 1.2
--.DIX.Z. 1987-04-09T08:24:44.10 10.0 positive manual PG 127 0.0039 -1.41 0.9
--.EMS.Z. 1987-04-09T08:24:41.90 10.0 positive manual PG 176 0.0024 -0.06 3.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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