LONTZEN (BE)
Quarry blast6 December 2022
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 10:37:392022-12-06
- UTC
- 09:37:392022-12-06
Main parameters
| Date and time | 2022-12-06 09:37:39 UTC 2022-12-06 10:37:39 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.662° N, 6.024° E Uncertainty ± 0.5 km |
| Event ID | ROB 17960 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-14 16:06:57 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
- 5.9 – 34.3km
- Mean velocity, P wave
- 6.7km/s
- Mean velocity, S wave
- 3.6km/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 0.23 s. S wave: 6 measurements, root-mean-square deviation 0.41 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)3 stations | |||||
| MEMSMembach | 5.9 | 189 | 09:37:40.57+1.07 s | 09:37:41.72+2.22 s | 1.15 |
| MRGMont Rigi | 17.2 | 168 | 09:37:42.74+3.24 s | 09:37:45.60+6.10 s | 2.86 |
| HOUHouvegnez | 34.3 | 182 | 09:37:45.48+5.98 s | 09:37:49.17+9.67 s | 3.69 |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 13.1 | 330 | 09:37:42.16+2.66 s | 09:37:43.94+4.44 s | 1.78 |
| TERZTerziet | 13.4 | 322 | 09:37:42.06+2.56 s | 09:37:44.21+4.71 s | 2.15 |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 20.4 | 95 | 09:37:43.16+3.66 s | 09:37:46.33+6.83 s | 3.17 |