NAMUR (BE)
Quarry blast24 June 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 11:29:522022-06-24
- UTC
- 09:29:522022-06-24
Main parameters
| Date and time | 2022-06-24 09:29:52 UTC 2022-06-24 11:29:52 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.487° N, 4.974° E Uncertainty ± 1.4 km |
| Event ID | ROB 16490 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-27 09:45:48 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
- 6
- Epicentral distance
- 24.5 – 91.6km
- Mean velocity, P wave
- 6.0km/s
- Mean velocity, S wave
- 3.5km/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: 6 measurements, root-mean-square deviation 0.29 s. S wave: 6 measurements, root-mean-square deviation 0.52 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)6 stations | |||||
| CLAClavier | 24.5 | 108 | 09:29:56.73+4.59 s | 09:29:59.80+7.66 s | 3.07 |
| TGATangissart | 34.6 | 292 | 09:29:57.99+5.85 s | 09:30:02.80+10.66 s | 4.81 |
| RCHRochefort | 41.1 | 154 | 09:29:59.22+7.08 s | 09:30:04.96+12.82 s | 5.74 |
| SNFSeneffe | 49.0 | 273 | 09:30:00.91+8.77 s | 09:30:07.12+14.98 s | 6.21 |
| MEMHMembach | 74.7 | 79 | 09:30:05.40+13.26 s | 09:30:14.97+22.83 s | 9.57 |
| KLBKalborn | 91.6 | 118 | 09:30:08.29+16.15 s | 09:30:18.23+26.09 s | 9.94 |