LA ROCHE-EN-ARDENNE (BE)
Quarry blast1 March 2022
- Magnitude
- 1.9ML
- Depth
- –
- Belgian time
- 14:33:062022-03-01
- UTC
- 13:33:062022-03-01
Main parameters
| Date and time | 2022-03-01 13:33:06 UTC 2022-03-01 14:33:06 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.202° N, 5.601° E Uncertainty ± 0.5 km |
| Event ID | ROB 15570 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-08 09:19:49 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
- 27.2 – 72.9km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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: 8 measurements, root-mean-square deviation 0.15 s. S 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)8 stations | |||||
| RCHRochefort | 27.2 | 259 | 13:33:11.67+4.79 s | 13:33:15.32+8.44 s | 3.65 |
| CLAClavier | 32.2 | 319 | 13:33:12.77+5.89 s | 13:33:16.83+9.95 s | 4.06 |
| HOUHouvegnez | 33.4 | 59 | 13:33:12.95+6.07 s | 13:33:16.66+9.78 s | 3.71 |
| KLBKalborn | 38.0 | 107 | 13:33:13.79+6.91 s | 13:33:18.57+11.69 s | 4.78 |
| MEMHMembach | 53.8 | 33 | 13:33:16.40+9.52 s | – | – |
| MEMSMembach | 53.8 | 33 | 13:33:16.51+9.63 s | 13:33:22.93+16.05 s | 6.42 |
| MRDMaredsous | 60.5 | 281 | 13:33:17.76+10.88 s | – | – |
| DOUDourbes | 72.9 | 261 | 13:33:19.39+12.51 s | – | – |