TUBIZE (BE)
Quarry blast13 April 2021
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 10:42:372021-04-13
- UTC
- 08:42:372021-04-13
Main parameters
| Date and time | 2021-04-13 08:42:37 UTC 2021-04-13 10:42:37 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.679° N, 4.170° E Uncertainty ± 3.4 km |
| Event ID | ROB 13130 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-04-14 23:39:04 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
- 7.2 – 26.2km
- 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 0.05 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)4 stations | |||||
| SKQSteenkerque | 7.2 | 243 | 08:42:39.24+1.60 s | 08:42:39.98+2.34 s | 0.74 |
| RQRRonquières | 9.0 | 155 | 08:42:39.50+1.86 s | – | – |
| SNFSeneffe | 20.3 | 157 | 08:42:41.64+4.00 s | – | – |
| TGATangissart | 26.2 | 108 | 08:42:42.56+4.92 s | 08:42:45.31+7.67 s | 2.75 |
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