WAIMES (BE)
Quarry blast11 February 2022
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 13:28:452022-02-11
- UTC
- 12:28:452022-02-11
Main parameters
| Date and time | 2022-02-11 12:28:45 UTC 2022-02-11 13:28:45 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.426° N, 6.098° E Uncertainty ± 2.4 km |
| Event ID | ROB 15455 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-14 09:36:44 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
- 5
- Epicentral distance
- 9.6 – 39.4km
- Mean velocity, P wave
- 5.6km/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: 5 measurements, root-mean-square deviation 0.06 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)4 stations | |||||
| MRGMont Rigi | 9.6 | 350 | 12:28:47.26+1.94 s | 12:28:48.14+2.82 s | 0.88 |
| HOUHouvegnez | 10.4 | 219 | 12:28:47.34+2.02 s | – | – |
| MEMHMembach | 21.3 | 343 | 12:28:49.45+4.13 s | 12:28:52.37+7.05 s | 2.92 |
| KLBKalborn | 36.3 | 179 | 12:28:51.98+6.66 s | 12:28:56.40+11.08 s | 4.42 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 39.4 | 343 | 12:28:52.66+7.34 s | 12:28:57.19+11.87 s | 4.53 |