WAIMES (BE)
Quarry blast17 February 2022
- Magnitude
- 1.3ML
- Depth
- 5.3km ± 2.8
- Belgian time
- 17:25:512022-02-17
- UTC
- 16:25:512022-02-17
Main parameters
| Date and time | 2022-02-17 16:25:51 UTC 2022-02-17 17:25:51 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.428° N, 6.122° E Uncertainty ± 1.3 km |
| Depth of hypocenter | 5.3 ± 2.8 km |
| Event ID | ROB 15490 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-01-23 13:54:18 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
- 12
- Epicentral distance
- 9.8 – 146.8km
- Mean velocity, P wave
- 6.0km/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. Hypocenter at a depth of 5.3 km. P wave: 11 measurements, root-mean-square deviation 0.33 s. S wave: 7 measurements, root-mean-square deviation 0.40 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)10 stations | ||||||
| MRGMont Rigi | 9.8 | 340 | 16:25:53.57+1.59 s | 16:25:55.32+3.34 s | 1.75 | 151.0 |
| HOUHouvegnez | 11.8 | 225 | 16:25:53.66+1.68 s | – | – | – |
| MEMHMembach | 21.6 | 338 | 16:25:55.75+3.77 s | 16:25:58.52+6.54 s | 2.77 | 87.7 |
| KLBKalborn | 36.6 | 181 | 16:25:58.37+6.39 s | 16:26:03.05+11.07 s | 4.68 | 20.1 |
| VIAVianden | 55.2 | 174 | 16:26:01.61+9.63 s | – | – | – |
| CLAClavier | 58.3 | 269 | 16:26:01.70+9.72 s | 16:26:09.45+17.47 s | 7.75 | 5.1 |
| RCHRochefort | 70.7 | 245 | 16:26:04.63+12.65 s | 16:26:12.67+20.69 s | 8.04 | 4.8 |
| GESGesves | 73.7 | 267 | 16:26:04.23+12.25 s | 16:26:12.75+20.77 s | 8.52 | 5.4 |
| DOUDourbes | 115.0 | 252 | 16:26:11.17+19.19 s | – | – | – |
| SKQSteenkerque | 146.8 | 280 | 16:26:16.27+24.29 s | – | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | ||||||
| DREDreilägerbach | 27.2 | 17 | 16:25:56.94+4.96 s | – | – | – |
| Dutch seismic network (KNMI)1 station | ||||||
| HGNHeimansgroeve | 39.7 | 340 | 16:25:58.92+6.94 s | 16:26:04.26+12.28 s | 5.34 | – |