Stolberg (DE)
Quarry blast31 August 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 11:55:282022-08-31
- UTC
- 09:55:282022-08-31
Main parameters
| Date and time | 2022-08-31 09:55:28 UTC 2022-08-31 11:55:28 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.742° N, 6.212° E Uncertainty ± 2.0 km |
| Event ID | ROB 16980 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-31 12:37:45 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
- 5
- Epicentral distance
- 12.7 – 33.2km
- Mean velocity, P wave
- 11.8km/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 0.36 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)1 station | |||||
| MEMHMembach | 20.5 | 224 | 09:55:32.30+4.16 s | 09:55:34.77+6.63 s | 2.47 |
| Dutch seismic network (KNMI)3 stations | |||||
| HGNHeimansgroeve | 20.0 | 277 | 09:55:31.91+3.77 s | 09:55:34.81+6.67 s | 2.90 |
| TERZTerziet | 21.7 | 275 | 09:55:32.08+3.94 s | – | – |
| VKBValkenburg | 33.2 | 295 | 09:55:32.57+4.43 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 12.7 | 146 | 09:55:30.65+2.51 s | 09:55:32.74+4.60 s | 2.09 |
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