NAMUR (BE)
Quarry blast11 October 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 14:15:192022-10-11
- UTC
- 12:15:192022-10-11
Main parameters
| Date and time | 2022-10-11 12:15:19 UTC 2022-10-11 14:15:19 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.497° N, 4.981° E Uncertainty ± 1.0 km |
| Event ID | ROB 17340 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-14 10:25:01 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
- 6
- Epicentral distance
- 14.6 – 91.7km
- Mean velocity, P wave
- 5.5km/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: 6 measurements, root-mean-square deviation 0.17 s. S wave: 5 measurements, root-mean-square deviation 0.11 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 | |||||
| GESGesves | 14.6 | 149 | 12:15:21.94+2.55 s | 12:15:24.00+4.61 s | 2.06 |
| CLAClavier | 24.4 | 111 | 12:15:23.76+4.37 s | 12:15:27.13+7.74 s | 3.37 |
| MRDMaredsous | 26.5 | 215 | 12:15:24.36+4.97 s | 12:15:27.68+8.29 s | 3.32 |
| TGATangissart | 34.7 | 290 | 12:15:25.54+6.15 s | 12:15:30.00+10.61 s | 4.46 |
| RCHRochefort | 41.9 | 155 | 12:15:27.35+7.96 s | 12:15:32.24+12.85 s | 4.89 |
| KLBKalborn | 91.7 | 118 | 12:15:36.06+16.67 s | – | – |