BIRRESBORN (DE)
Quarry blast15 July 2022
- Magnitude
- –
- Depth
- –
- Belgian time
- 11:54:292022-07-15
- UTC
- 09:54:292022-07-15
Main parameters
| Date and time | 2022-07-15 09:54:29 UTC 2022-07-15 11:54:29 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.181° N, 6.621° E Uncertainty ± 2.7 km |
| Event ID | ROB 16825 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-16 11:08:16 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
- 10
- Epicentral distance
- 37.7 – 145.2km
- 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 0.33 s. S wave: 8 measurements, root-mean-square deviation 0.50 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)9 stations | |||||
| KLBKalborn | 37.7 | 256 | 09:54:36.19+6.61 s | 09:54:41.43+11.85 s | 5.24 |
| VIAVianden | 40.6 | 228 | 09:54:36.59+7.01 s | 09:54:41.65+12.07 s | 5.06 |
| HOUHouvegnez | 47.9 | 294 | 09:54:37.77+8.19 s | 09:54:43.74+14.16 s | 5.97 |
| MRGMont Rigi | 53.4 | 314 | 09:54:38.64+9.06 s | 09:54:45.36+15.78 s | 6.72 |
| TNLTernell | 57.0 | 322 | 09:54:39.35+9.77 s | 09:54:46.76+17.18 s | 7.41 |
| MEMSMembach | 64.4 | 318 | 09:54:41.56+11.98 s | 09:54:48.14+18.56 s | 6.58 |
| WLFWalferdange | 66.7 | 211 | – | 09:54:48.95+19.37 s | – |
| RCHRochefort | 99.6 | 269 | 09:54:46.53+16.95 s | – | – |
| DOUDourbes | 145.2 | 267 | 09:54:54.65+25.07 s | 09:55:11.61+42.03 s | 16.96 |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| DREDreilägerbach | 60.2 | 333 | 09:54:39.85+10.27 s | 09:54:48.56+18.98 s | 8.71 |