WASSERLIESCH (DE)
Quarry blast6 August 2021
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 13:04:332021-08-06
- UTC
- 11:04:332021-08-06
Main parameters
| Date and time | 2021-08-06 11:04:33 UTC 2021-08-06 13:04:33 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 49.708° N, 6.522° E Uncertainty ± 11.8 km |
| Event ID | ROB 14210 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-08-06 18:33:20 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
- 34.2 – 106.7km
- Mean velocity, P wave
- 5.7km/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: 5 measurements, root-mean-square deviation 0.58 s. S wave: 4 measurements, root-mean-square deviation 0.73 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)5 stations | |||||
| VIAVianden | 34.2 | 318 | 11:04:39.56+5.92 s | 11:04:44.45+10.81 s | 4.89 |
| KLBKalborn | 52.7 | 326 | 11:04:41.82+8.18 s | 11:04:50.15+16.51 s | 8.33 |
| HOUHouvegnez | 80.8 | 333 | 11:04:47.99+14.35 s | 11:04:56.60+22.96 s | 8.61 |
| RCHRochefort | 105.4 | 299 | 11:04:52.74+19.10 s | – | – |
| MEMHMembach | 106.7 | 340 | 11:04:52.15+18.51 s | 11:05:05.36+31.72 s | 13.21 |