KRUFT (DE)
Quarry blast9 November 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 13:50:332022-11-09
- UTC
- 12:50:332022-11-09
Main parameters
| Date and time | 2022-11-09 12:50:33 UTC 2022-11-09 13:50:33 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.406° N, 7.389° E Uncertainty ± 2.6 km |
| Event ID | ROB 17690 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:41:32 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
- 7
- Epicentral distance
- 94.1 – 202.3km
- Mean velocity, P wave
- 4.6km/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: 5 measurements, root-mean-square deviation 0.67 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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)6 stations | |||||
| MRGMont Rigi | 94.1 | 278 | 12:50:49.54+15.65 s | – | – |
| KLBKalborn | 97.5 | 250 | 12:50:48.99+15.10 s | – | – |
| HOUHouvegnez | 98.6 | 267 | 12:50:51.14+17.25 s | – | – |
| MEMSMembach | 100.4 | 284 | 12:50:51.38+17.49 s | – | – |
| GESGesves | 163.7 | 270 | 12:51:00.73+26.84 s | – | – |
| DOUDourbes | 202.3 | 261 | 12:51:06.28+32.39 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 110.7 | 292 | 12:50:52.87+18.98 s | – | – |