OLNE (BE)
Quarry blast8 November 2022
- Magnitude
- 0.7ML
- Depth
- –
- Belgian time
- 13:32:322022-11-08
- UTC
- 12:32:322022-11-08
Main parameters
| Date and time | 2022-11-08 12:32:32 UTC 2022-11-08 13:32:32 Belgian time |
|---|---|
| Magnitude | ML 0.7 |
| Epicentral coordinates | 50.584° N, 5.710° E Uncertainty ± 0.8 km |
| Event ID | ROB 17675 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:40:44 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
- 8
- Epicentral distance
- 10.0 – 32.0km
- Mean velocity, P wave
- 6.0km/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: 8 measurements, root-mean-square deviation 0.14 s. S wave: 4 measurements, root-mean-square deviation 0.13 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)5 stations | |||||
| LCHLa Chartreuse | 10.0 | 308 | 12:32:34.56+1.89 s | 12:32:36.18+3.51 s | 1.62 |
| STISart Tilman | 10.3 | 270 | 12:32:34.69+2.02 s | 12:32:36.28+3.61 s | 1.59 |
| MEMHMembach | 21.5 | 82 | 12:32:36.79+4.12 s | 12:32:39.57+6.90 s | 2.78 |
| MEMSMembach | 21.5 | 82 | 12:32:36.83+4.16 s | – | – |
| TNLTernell | 29.8 | 89 | 12:32:37.89+5.22 s | – | – |
| Dutch seismic network (KNMI)3 stations | |||||
| TERZTerziet | 23.8 | 36 | 12:32:37.09+4.42 s | 12:32:39.97+7.30 s | 2.88 |
| HGNHeimansgroeve | 25.5 | 38 | 12:32:37.51+4.84 s | – | – |
| VKBValkenburg | 32.0 | 10 | 12:32:38.46+5.79 s | – | – |