DURBUY (BE)

Quarry blast30 November 2017

Magnitude
1.3ML
Depth
–
Belgian time
14:42:112017-11-30
UTC
13:42:112017-11-30

Main parameters

Date and time2017-11-30 13:42:11 UTC
2017-11-30 14:42:11 Belgian time
MagnitudeML 1.3
Epicentral coordinates50.366° N, 5.541° E
Uncertainty ± 0.3 km
Event IDROB 6080

Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-11-30 14:56:03 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
6
Epicentral distance
18.0 – 50.1km
Mean velocity, P wave
5.9km/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: 6 measurements, root-mean-square deviation 0.05 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°UTCUTCs
Belgian seismic network (Royal Observatory of Belgium)6 stations
CLAClavier18.028913:42:15.06+3.43 s13:42:18.22+6.59 s3.16
GESGesves32.427413:42:17.45+5.82 s13:42:22.50+10.87 s5.05
HOUHouvegnez33.09213:42:17.50+5.87 s––
MRGMont Rigi41.26713:42:19.04+7.41 s––
MEMSMembach42.95113:42:19.18+7.55 s––
KLBKalborn50.112613:42:20.45+8.82 s––
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