LA ROCHE-EN-ARDENNE (BE)
Quarry blast16 June 2022
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 16:40:062022-06-16
- UTC
- 14:40:062022-06-16
Main parameters
| Date and time | 2022-06-16 14:40:06 UTC 2022-06-16 16:40:06 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.194° N, 5.587° E Uncertainty ± 0.6 km |
| Event ID | ROB 16370 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-17 15:34:34 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
- 11
- Epicentral distance
- 26.1 – 99.2km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.3km/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: 11 measurements, root-mean-square deviation 0.12 s. S wave: 4 measurements, root-mean-square deviation 0.28 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)10 stations | |||||
| RCHRochefort | 26.1 | 260 | 14:40:10.88+4.71 s | 14:40:14.18+8.01 s | 3.30 |
| CLAClavier | 32.2 | 321 | 14:40:11.93+5.76 s | 14:40:16.40+10.23 s | 4.47 |
| HOUHouvegnez | 34.7 | 59 | 14:40:12.05+5.88 s | – | – |
| KLBKalborn | 38.8 | 105 | 14:40:13.09+6.92 s | – | – |
| GESGesves | 41.4 | 301 | 14:40:13.58+7.41 s | – | – |
| MRGMont Rigi | 49.5 | 44 | 14:40:14.70+8.53 s | 14:40:20.82+14.65 s | 6.12 |
| MEMHMembach | 55.1 | 33 | 14:40:15.63+9.46 s | 14:40:23.05+16.88 s | 7.42 |
| MRDMaredsous | 59.6 | 282 | 14:40:16.51+10.34 s | – | – |
| DOUDourbes | 71.7 | 262 | 14:40:18.54+12.37 s | – | – |
| SNFSeneffe | 99.2 | 291 | 14:40:23.30+17.13 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 67.9 | 21 | 14:40:18.11+11.94 s | – | – |