YVOIR (BE)
Quarry blast11 June 2019
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 10:30:102019-06-11
- UTC
- 08:30:102019-06-11
Main parameters
| Date and time | 2019-06-11 08:30:10 UTC 2019-06-11 10:30:10 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.300° N, 4.905° E Uncertainty ± 2.0 km |
| Event ID | ROB 8230 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-06-11 13:12:51 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
- 6
- Epicentral distance
- 9.8 – 62.0km
- Mean velocity, P wave
- 6.2km/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: 6 measurements, root-mean-square deviation 0.31 s. S wave: 4 measurements, root-mean-square deviation 0.06 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 | |||||
| MRDMaredsous | 9.8 | 271 | 08:30:12.76+1.90 s | 08:30:14.35+3.49 s | 1.59 |
| GESGesves | 16.0 | 54 | 08:30:14.13+3.27 s | 08:30:16.05+5.19 s | 1.92 |
| CLAClavier | 31.2 | 65 | 08:30:16.80+5.94 s | 08:30:20.68+9.82 s | 3.88 |
| DOUDourbes | 31.8 | 224 | 08:30:16.21+5.35 s | 08:30:20.91+10.05 s | 4.70 |
| BRQBracquegnies | 58.3 | 290 | 08:30:21.10+10.24 s | – | – |
| LCHLa Chartreuse | 62.0 | 52 | 08:30:20.98+10.12 s | – | – |