WELLIN (BE)
Quarry blast1 February 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 13:59:312022-02-01
- UTC
- 12:59:312022-02-01
Main parameters
| Date and time | 2022-02-01 12:59:31 UTC 2022-02-01 13:59:31 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.091° N, 5.151° E Uncertainty ± 6.9 km |
| Event ID | ROB 15340 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-07 09:24:15 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
- 7
- Epicentral distance
- 8.9 – 98.3km
- Mean velocity, P wave
- 5.4km/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: 7 measurements, root-mean-square deviation 0.19 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 | |||||
| RCHRochefort | 8.9 | 37 | 12:59:32.34+1.01 s | – | – |
| GESGesves | 33.0 | 352 | 12:59:36.95+5.62 s | – | – |
| MRDMaredsous | 36.0 | 311 | 12:59:37.61+6.28 s | – | – |
| DOUDourbes | 39.8 | 271 | 12:59:37.89+6.56 s | – | – |
| MRGMont Rigi | 80.7 | 54 | 12:59:45.33+14.00 s | – | – |
| SKQSteenkerque | 98.3 | 310 | 12:59:49.05+17.72 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 93.2 | 36 | 12:59:48.11+16.78 s | – | – |
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