NAMUR (BE)
Quarry blast3 November 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:19:392022-11-03
- UTC
- 13:19:392022-11-03
Main parameters
| Date and time | 2022-11-03 13:19:39 UTC 2022-11-03 14:19:39 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.483° N, 4.977° E Uncertainty ± 0.8 km |
| Event ID | ROB 17615 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:37:25 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
- 9
- Epicentral distance
- 13.4 – 74.6km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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: 9 measurements, root-mean-square deviation 0.27 s. S wave: 5 measurements, root-mean-square deviation 0.19 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)8 stations | |||||
| GESGesves | 13.4 | 144 | 13:19:42.19+2.48 s | 13:19:43.77+4.06 s | 1.58 |
| CLAClavier | 24.2 | 107 | 13:19:44.07+4.36 s | 13:19:47.34+7.63 s | 3.27 |
| MRDMaredsous | 25.0 | 217 | 13:19:44.54+4.83 s | 13:19:47.74+8.03 s | 3.20 |
| TGATangissart | 35.0 | 293 | 13:19:45.58+5.87 s | 13:19:50.27+10.56 s | 4.69 |
| RCHRochefort | 40.6 | 154 | 13:19:47.23+7.52 s | – | – |
| UCCSUccle | 55.9 | 309 | 13:19:49.84+10.13 s | – | – |
| BRQBracquegnies | 59.7 | 270 | 13:19:50.03+10.32 s | – | – |
| MEMHMembach | 74.6 | 79 | 13:19:52.96+13.25 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| TERZTerziet | 72.5 | 65 | 13:19:52.00+12.29 s | 13:20:01.43+21.72 s | 9.43 |