DINANT (BE)
Quarry blast25 February 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 10:30:022022-02-25
- UTC
- 09:30:022022-02-25
Main parameters
| Date and time | 2022-02-25 09:30:02 UTC 2022-02-25 10:30:02 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.281° N, 4.907° E Uncertainty ± 0.6 km |
| Event ID | ROB 15515 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-25 18:37:46 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
- 10.1 – 32.0km
- Mean velocity, P wave
- 6.0km/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: 5 measurements, root-mean-square deviation 0.18 s. S wave: 5 measurements, root-mean-square deviation 0.13 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)5 stations | |||||
| MRDMaredsous | 10.1 | 283 | 09:30:04.54+1.94 s | 09:30:06.05+3.45 s | 1.51 |
| GESGesves | 17.3 | 48 | 09:30:05.80+3.20 s | 09:30:08.52+5.92 s | 2.72 |
| RCHRochefort | 26.8 | 121 | 09:30:07.02+4.42 s | 09:30:11.12+8.52 s | 4.10 |
| DOUDourbes | 30.4 | 227 | 09:30:08.04+5.44 s | 09:30:12.42+9.82 s | 4.38 |
| CLAClavier | 32.0 | 61 | 09:30:08.43+5.83 s | 09:30:12.90+10.30 s | 4.47 |