TROOZ (BE)
Quarry blast5 May 2021
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 11:53:132021-05-05
- UTC
- 09:53:132021-05-05
Main parameters
| Date and time | 2021-05-05 09:53:13 UTC 2021-05-05 11:53:13 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.566° N, 5.705° E Uncertainty ± 0.6 km |
| Event ID | ROB 13310 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-05-06 07:58:01 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
- 8
- Epicentral distance
- 11.1 – 32.9km
- Mean velocity, P wave
- 6.1km/s
- Mean velocity, S wave
- 3.1km/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 0.24 s. S wave: 5 measurements, root-mean-square deviation 0.20 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 | |||||
| LCHLa Chartreuse | 11.1 | 317 | 09:53:15.06+1.96 s | 09:53:17.12+4.02 s | 2.06 |
| MEMHMembach | 22.1 | 77 | 09:53:16.89+3.79 s | 09:53:20.34+7.24 s | 3.45 |
| EBNEben-Emael | 25.8 | 356 | 09:53:17.67+4.57 s | – | – |
| MRGMont Rigi | 26.9 | 103 | 09:53:17.83+4.73 s | 09:53:22.08+8.98 s | 4.25 |
| HOUHouvegnez | 31.7 | 138 | 09:53:18.16+5.06 s | – | – |
| CLAClavier | 32.9 | 240 | 09:53:19.21+6.11 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| TERZTerziet | 25.6 | 34 | 09:53:17.76+4.66 s | 09:53:21.79+8.69 s | 4.03 |
| HGNHeimansgroeve | 27.3 | 36 | 09:53:17.76+4.66 s | 09:53:21.79+8.69 s | 4.03 |