TUBIZE (BE)
Quarry blast14 September 2021
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 13:20:422021-09-14
- UTC
- 11:20:422021-09-14
Main parameters
| Date and time | 2021-09-14 11:20:42 UTC 2021-09-14 13:20:42 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.671° N, 4.183° E Uncertainty ± 1.7 km |
| Event ID | ROB 14410 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-09-16 15:44:47 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
- 5
- Epicentral distance
- 7.7 – 25.1km
- Mean velocity, P wave
- 7.5km/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: 5 measurements, root-mean-square deviation 0.20 s.
Station measurements
P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.
| km | ° | UTC | UTC | s | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)5 stations | |||||
| SKQSteenkerque | 7.7 | 251 | 11:20:44.12+1.67 s | 11:20:44.96+2.51 s | 0.84 |
| RQRRonquières | 7.8 | 158 | 11:20:44.49+2.04 s | – | – |
| UCCBUccle | 18.8 | 42 | 11:20:46.07+3.62 s | – | – |
| SNFSeneffe | 19.2 | 158 | 11:20:46.00+3.55 s | – | – |
| TGATangissart | 25.1 | 107 | 11:20:46.44+3.99 s | 11:20:50.36+7.91 s | 3.92 |
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