WAIMES (BE)
Quarry blast26 August 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 10:28:012022-08-26
- UTC
- 08:28:012022-08-26
Main parameters
| Date and time | 2022-08-26 08:28:01 UTC 2022-08-26 10:28:01 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.421° N, 6.080° E Uncertainty ± 0.8 km |
| Event ID | ROB 16965 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-26 15:05:20 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
- 9.1 – 39.6km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.2km/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 0.10 s. S wave: 4 measurements, root-mean-square deviation 0.26 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)4 stations | |||||
| HOUHouvegnez | 9.1 | 216 | 08:28:03.61+1.89 s | 08:28:04.68+2.96 s | 1.07 |
| MEMHMembach | 21.5 | 347 | 08:28:05.69+3.97 s | 08:28:09.16+7.44 s | 3.47 |
| MEMSMembach | 21.5 | 347 | 08:28:05.73+4.01 s | 08:28:08.76+7.04 s | 3.03 |
| KLBKalborn | 35.7 | 177 | 08:28:08.27+6.55 s | 08:28:12.93+11.21 s | 4.66 |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 30.0 | 33 | 08:28:07.00+5.28 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 39.6 | 345 | 08:28:08.96+7.24 s | – | – |