BOTTROP (DE)
Quarry blast3 November 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 11:04:052022-11-03
- UTC
- 10:04:052022-11-03
Main parameters
| Date and time | 2022-11-03 10:04:05 UTC 2022-11-03 11:04:05 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 51.547° N, 6.856° E Uncertainty ± 2.4 km |
| Event ID | ROB 17605 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:37:04 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
- 46.8 – 120.1km
- Mean velocity, P wave
- 5.6km/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: 4 measurements, root-mean-square deviation 0.19 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)1 station | |||||
| MEMSMembach | 120.1 | 210 | 10:04:26.25+20.30 s | 10:04:39.96+34.01 s | 13.71 |
| Dutch seismic network (KNMI)3 stations | |||||
| WTSBWinterswijk New | 46.8 | 355 | 10:04:13.98+8.03 s | – | – |
| HGNHeimansgroeve | 108.5 | 217 | 10:04:25.24+19.29 s | 10:04:39.20+33.25 s | 13.96 |
| TERZTerziet | 110.3 | 217 | 10:04:25.03+19.08 s | 10:04:37.85+31.90 s | 12.82 |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 107.2 | 201 | 10:04:24.65+18.70 s | 10:04:36.64+30.69 s | 11.99 |