WAIMES (BE)
Quarry blast16 June 2021
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 12:52:462021-06-16
- UTC
- 10:52:462021-06-16
Main parameters
| Date and time | 2021-06-16 10:52:46 UTC 2021-06-16 12:52:46 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.419° N, 6.109° E Uncertainty ± 1.1 km |
| Event ID | ROB 13685 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-06-18 11:15:33 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
- 7
- Epicentral distance
- 10.4 – 54.3km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.3km/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: 7 measurements, root-mean-square deviation 0.23 s. S wave: 6 measurements, root-mean-square deviation 0.31 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)6 stations | |||||
| HOUHouvegnez | 10.4 | 225 | 10:52:48.42+1.92 s | 10:52:50.18+3.68 s | 1.76 |
| MRGMont Rigi | 10.5 | 347 | 10:52:48.23+1.73 s | 10:52:50.39+3.89 s | 2.16 |
| MEMSMembach | 22.2 | 342 | 10:52:50.31+3.81 s | 10:52:53.95+7.45 s | 3.64 |
| MEMHMembach | 22.2 | 342 | 10:52:50.33+3.83 s | 10:52:53.99+7.49 s | 3.66 |
| KLBKalborn | 35.5 | 180 | 10:52:52.96+6.46 s | 10:52:57.44+10.94 s | 4.48 |
| VIAVianden | 54.3 | 173 | 10:52:56.20+9.70 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 40.3 | 342 | 10:52:53.64+7.14 s | 10:52:58.79+12.29 s | 5.15 |