MODAVE (BE)

Quarry blast26 November 2018

Magnitude
1.6ML
Depth
–
Belgian time
15:41:302018-11-26
UTC
14:41:302018-11-26

Main parameters

Date and time2018-11-26 14:41:30 UTC
2018-11-26 15:41:30 Belgian time
MagnitudeML 1.6
Epicentral coordinates50.445° N, 5.283° E
Uncertainty ± 2.0 km
Event IDROB 7435

Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-11-29 15:32:43 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
4
Epicentral distance
3.2 – 54.7km
Mean velocity, P wave
5.6km/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: 4 measurements, root-mean-square deviation 0.11 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)4 stations
CLAClavier3.215514:41:31.17+0.53 s14:41:31.79+1.15 s0.62
GESGesves15.524414:41:33.30+2.66 s14:41:35.93+5.29 s2.63
MRDMaredsous40.024714:41:37.90+7.26 s––
MEMSMembach54.77014:41:40.24+9.60 s––
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