NAMUR (BE)
Quarry blast29 November 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 14:18:402022-11-29
- UTC
- 13:18:402022-11-29
Main parameters
| Date and time | 2022-11-29 13:18:40 UTC 2022-11-29 14:18:40 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.505° N, 4.957° E Uncertainty ± 1.5 km |
| Event ID | ROB 17905 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-02 09:57:12 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
- 16.2 – 97.2km
- 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 0.32 s. S wave: 4 measurements, root-mean-square deviation 0.48 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 | 16.2 | 145 | 13:18:42.70+2.59 s | – | – |
| MRDMaredsous | 26.3 | 211 | 13:18:45.15+5.04 s | 13:18:49.03+8.92 s | 3.88 |
| CLAClavier | 26.3 | 111 | 13:18:44.47+4.36 s | 13:18:48.23+8.12 s | 3.76 |
| TGATangissart | 32.8 | 290 | 13:18:45.84+5.73 s | – | – |
| DOUDourbes | 52.4 | 210 | 13:18:49.83+9.72 s | 13:18:55.48+15.37 s | 5.65 |
| MRGMont Rigi | 79.3 | 89 | 13:18:53.76+13.65 s | – | – |
| TNLTernell | 83.6 | 83 | 13:18:54.98+14.87 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 97.2 | 80 | 13:18:57.06+16.95 s | 13:19:09.01+28.90 s | 11.95 |
| Dutch seismic network (KNMI)1 station | |||||
| TERZTerziet | 72.8 | 67 | 13:18:52.63+12.52 s | – | – |