REBECQ (BE)

Quarry blast2 June 2020

Magnitude
0.7ML
Depth
–
Belgian time
13:24:382020-06-02
UTC
11:24:382020-06-02

Main parameters

Date and time2020-06-02 11:24:38 UTC
2020-06-02 13:24:38 Belgian time
MagnitudeML 0.7
Epicentral coordinates50.689° N, 4.108° E
Uncertainty ± 3.0 km
Event IDROB 10150

Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-06-02 14:17:04 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
4.9 – 30.8km
Mean velocity, P wave
6.2km/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 0.08 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
SKQSteenkerque4.920411:24:40.17+1.27 s11:24:40.40+1.50 s0.23
RQRRonquières12.413811:24:41.47+2.57 s––
UCCBUccle21.55611:24:42.74+3.84 s11:24:45.85+6.95 s3.11
TGATangissart30.810811:24:44.42+5.52 s11:24:49.53+10.63 s5.11
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