NAMUR (BE)
Quarry blast22 November 2022
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 16:02:152022-11-22
- UTC
- 15:02:152022-11-22
Main parameters
| Date and time | 2022-11-22 15:02:15 UTC 2022-11-22 16:02:15 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.479° N, 4.922° E Uncertainty ± 1.2 km |
| Event ID | ROB 17825 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-24 09:14:07 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
- 10
- Epicentral distance
- 15.7 – 109.6km
- Mean velocity, P wave
- 5.8km/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: 10 measurements, root-mean-square deviation 0.56 s. S wave: 5 measurements, root-mean-square deviation 0.25 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)9 stations | |||||
| GESGesves | 15.7 | 132 | 15:02:18.65+2.87 s | 15:02:20.76+4.98 s | 2.11 |
| MRDMaredsous | 22.5 | 209 | 15:02:20.26+4.48 s | 15:02:22.30+6.52 s | 2.04 |
| CLAClavier | 27.8 | 104 | 15:02:20.84+5.06 s | 15:02:24.49+8.71 s | 3.65 |
| TGATangissart | 31.7 | 297 | 15:02:21.36+5.58 s | – | – |
| RCHRochefort | 42.0 | 149 | 15:02:22.10+6.32 s | – | – |
| DOUDourbes | 48.6 | 209 | 15:02:24.81+9.03 s | 15:02:30.77+14.99 s | 5.96 |
| MRGMont Rigi | 81.9 | 87 | 15:02:30.19+14.41 s | – | – |
| KLBKalborn | 94.5 | 116 | 15:02:33.13+17.35 s | 15:02:45.21+29.43 s | 12.08 |
| VIAVianden | 109.6 | 123 | 15:02:34.03+18.25 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 100.2 | 79 | 15:02:33.23+17.45 s | – | – |