NAMUR (BE)
Quarry blast8 March 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 13:06:162022-03-08
- UTC
- 12:06:162022-03-08
Main parameters
| Date and time | 2022-03-08 12:06:16 UTC 2022-03-08 13:06:16 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.491° N, 4.951° E Uncertainty ± 1.1 km |
| Event ID | ROB 15620 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-15 20:28:53 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
- 15.2 – 61.7km
- Mean velocity, P wave
- 5.3km/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: 7 measurements, root-mean-square deviation 0.61 s. S wave: 6 measurements, root-mean-square deviation 0.30 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)7 stations | |||||
| GESGesves | 15.2 | 141 | 12:06:19.21+2.77 s | 12:06:20.84+4.40 s | 1.63 |
| MRDMaredsous | 24.7 | 212 | 12:06:21.28+4.84 s | 12:06:24.57+8.13 s | 3.29 |
| CLAClavier | 26.2 | 108 | 12:06:20.42+3.98 s | 12:06:24.28+7.84 s | 3.86 |
| TGATangissart | 33.0 | 293 | 12:06:22.29+5.85 s | 12:06:26.18+9.74 s | 3.89 |
| RCHRochefort | 42.2 | 152 | 12:06:25.50+9.06 s | 12:06:29.18+12.74 s | 3.68 |
| DOUDourbes | 50.8 | 210 | 12:06:25.94+9.50 s | 12:06:31.85+15.41 s | 5.91 |
| EBNEben-Emael | 61.7 | 56 | 12:06:27.45+11.01 s | – | – |