NAMUR (BE)
Quarry blast25 January 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 14:24:102022-01-25
- UTC
- 13:24:102022-01-25
Main parameters
| Date and time | 2022-01-25 13:24:10 UTC 2022-01-25 14:24:10 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.495° N, 4.976° E Uncertainty ± 1.4 km |
| Event ID | ROB 15290 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-01-28 13:42:04 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
- 14.5 – 41.8km
- Mean velocity, P wave
- 4.9km/s
- Mean velocity, S wave
- 3.0km/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 0.15 s. S wave: 5 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)5 stations | |||||
| GESGesves | 14.5 | 147 | 13:24:12.42+2.28 s | 13:24:14.41+4.27 s | 1.99 |
| CLAClavier | 24.6 | 110 | 13:24:14.65+4.51 s | 13:24:18.10+7.96 s | 3.45 |
| MRDMaredsous | 26.0 | 215 | 13:24:14.95+4.81 s | 13:24:18.40+8.26 s | 3.45 |
| TGATangissart | 34.4 | 291 | 13:24:16.25+6.11 s | 13:24:20.69+10.55 s | 4.44 |
| RCHRochefort | 41.8 | 155 | 13:24:18.08+7.94 s | 13:24:23.98+13.84 s | 5.90 |