MARCHE LES DAMES (BE)

Known mine explosion7 April 2016

Magnitude
1.9ML
Depth
–
Belgian time
14:27:072016-04-07
UTC
12:27:072016-04-07

Main parameters

Date and time2016-04-07 12:27:07 UTC
2016-04-07 14:27:07 Belgian time
MagnitudeML 1.9
Epicentral coordinates50.516° N, 4.961° E
Uncertainty ± 1.9 km
Event IDROB 5479

Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-04-11 09:05:24 Belgian time

Location map

  • Epicentre
  • Station that recorded the event

Arrival times at the stations

Each station first records the P wave, the fastest, then the S wave. The farther a station is from the epicentre, the later the waves reach it and the wider the gap between the two.

Stations
8
Epicentral distance
26.5 – 83.2km
Mean velocity, P wave
5.7km/s
  • P wave
  • S wave
  • Curve fitted to the measurements
Notes and method

Curves: travel time of a direct wave in a homogeneous medium. The velocity of each wave and an origin-time shift, common to both, are fitted to the measurements by least squares. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 8 measurements, root-mean-square deviation 0.32 s.

Table of measurements

Station measurements

P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.

km°UTCUTCsnm
Belgian seismic network (Royal Observatory of Belgium)8 stations
CLAClavier26.511412:27:11.54+4.25 s12:27:15.38+8.09 s3.84105.5
MRDMaredsous27.421012:27:12.43+5.14 s12:27:16.20+8.91 s3.7768.0
STISart Tilman43.48012:27:15.20+7.91 s–––
RCHRochefort44.315512:27:14.72+7.43 s12:27:20.28+12.99 s5.56–
SNFSeneffe48.027012:27:15.88+8.59 s–––
RQRRonquières53.128112:27:16.01+8.72 s–––
SKQSteenkerque64.228412:27:18.49+11.20 s–––
TNLTernell83.28412:27:21.94+14.65 s–––
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