LEUZE-EN-HAINAUT (BE)
Quarry blast24 June 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 12:08:582022-06-24
- UTC
- 10:08:582022-06-24
Main parameters
| Date and time | 2022-06-24 10:08:58 UTC 2022-06-24 12:08:58 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.570° N, 3.654° E Uncertainty ± 13.4 km |
| Event ID | ROB 16495 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-27 09:46:02 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
- 8
- Epicentral distance
- 20.6 – 182.4km
- Mean velocity, P wave
- 6.7km/s
- Mean velocity, S wave
- 3.1km/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: 7 measurements, root-mean-square deviation 1.06 s. S wave: 5 measurements, root-mean-square deviation 0.85 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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)8 stations | |||||
| LESLessines | 20.6 | 40 | 10:09:01.92+3.64 s | 10:09:05.81+7.53 s | 3.89 |
| SKQSteenkerque | 31.4 | 74 | 10:09:04.07+5.79 s | 10:09:08.76+10.48 s | 4.69 |
| BRQBracquegnies | 35.6 | 106 | 10:09:01.44+3.16 s | – | – |
| RQRRonquières | 40.6 | 84 | 10:09:04.52+6.24 s | – | – |
| SNFSeneffe | 45.1 | 98 | 10:09:06.41+8.13 s | 10:09:13.80+15.52 s | 7.39 |
| UCCBUccle | 55.9 | 63 | 10:09:07.00+8.72 s | 10:09:15.06+16.78 s | 8.06 |
| DOUDourbes | 85.3 | 128 | 10:09:11.39+13.11 s | 10:09:26.75+28.47 s | 15.36 |
| KLBKalborn | 182.4 | 106 | 10:09:24.97+26.69 s | – | – |