WALLERSHEIM (DE)
Quarry blast4 July 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 11:48:072022-07-04
- UTC
- 09:48:072022-07-04
Main parameters
| Date and time | 2022-07-04 09:48:07 UTC 2022-07-04 11:48:07 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.186° N, 6.498° E Uncertainty ± 1.5 km |
| Event ID | ROB 16550 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-07-04 14:16:55 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
- 29.4 – 136.4km
- Mean velocity, P wave
- 6.3km/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 0.05 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)5 stations | |||||
| KLBKalborn | 29.4 | 251 | 09:48:13.37+5.46 s | 09:48:16.08+8.17 s | 2.71 |
| VIAVianden | 35.0 | 217 | 09:48:14.40+6.49 s | – | – |
| MRGMont Rigi | 47.1 | 320 | 09:48:16.20+8.29 s | – | – |
| MEMHMembach | 58.5 | 324 | 09:48:18.01+10.10 s | – | – |
| DOUDourbes | 136.4 | 266 | 09:48:30.99+23.08 s | 09:48:48.88+40.97 s | 17.89 |