WAIMES (BE)
Quarry blast28 January 2022
- Magnitude
- 0.7ML
- Depth
- –
- Belgian time
- 12:49:052022-01-28
- UTC
- 11:49:052022-01-28
Main parameters
| Date and time | 2022-01-28 11:49:05 UTC 2022-01-28 12:49:05 Belgian time |
|---|---|
| Magnitude | ML 0.7 |
| Epicentral coordinates | 50.424° N, 6.091° E Uncertainty ± 5.5 km |
| Event ID | ROB 15315 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-07 09:21:47 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
- 9.7 – 42.3km
- Mean velocity, P wave
- 5.8km/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 0.13 s. S wave: 4 measurements, root-mean-square deviation 0.15 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 | |||||
| MRGMont Rigi | 9.7 | 353 | 11:49:06.98+1.82 s | 11:49:08.31+3.15 s | 1.33 |
| HOUHouvegnez | 9.9 | 218 | 11:49:06.95+1.79 s | 11:49:08.50+3.34 s | 1.55 |
| TNLTernell | 18.2 | 9 | 11:49:08.63+3.47 s | 11:49:10.93+5.77 s | 2.30 |
| MEMSMembach | 21.3 | 344 | 11:49:09.18+4.02 s | – | – |
| KLBKalborn | 36.1 | 178 | 11:49:11.60+6.44 s | – | – |
| LCHLa Chartreuse | 42.3 | 305 | 11:49:12.72+7.56 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| TERZTerziet | 39.2 | 341 | 11:49:12.46+7.30 s | – | – |
| HGNHeimansgroeve | 39.4 | 343 | 11:49:12.37+7.21 s | 11:49:16.76+11.60 s | 4.39 |