SPRIMONT (BE)

Quarry blast30 May 2016

Magnitude
1.6ML
Depth
–
Belgian time
15:16:252016-05-30
UTC
13:16:252016-05-30

Main parameters

Date and time2016-05-30 13:16:25 UTC
2016-05-30 15:16:25 Belgian time
MagnitudeML 1.6
Epicentral coordinates50.484° N, 5.588° E
Uncertainty ± 3.0 km
Event IDROB 5517

Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-05-30 15:29:19 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
10
Epicentral distance
11.2 – 83.0km
Mean velocity, P wave
5.9km/s
Mean velocity, S wave
3.7km/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: 10 measurements, root-mean-square deviation 0.35 s. S wave: 4 measurements, root-mean-square deviation 0.49 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)9 stations
STISart Tilman11.235113:16:27.82+2.44 s––
CLAClavier21.625113:16:29.39+4.01 s13:16:30.63+5.25 s1.24
HOUHouvegnez32.911613:16:31.28+5.90 s13:16:35.00+9.62 s3.72
MEMHMembach33.06513:16:30.82+5.44 s––
MEMSMembach33.06513:16:30.84+5.46 s––
MRGMont Rigi34.78513:16:31.34+5.96 s13:16:35.18+9.80 s3.84
EBNEben-Emael35.41013:16:31.56+6.18 s––
GESGesves37.325313:16:32.75+7.37 s––
DOUDourbes83.023913:16:39.54+14.16 s––
Dutch seismic network (KNMI)1 station
HGNHeimansgroeve39.53813:16:32.64+7.26 s13:16:36.58+11.20 s3.94
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