ROCHEFORT (BE)
Quarry blast17 June 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 12:36:122022-06-17
- UTC
- 10:36:122022-06-17
Main parameters
| Date and time | 2022-06-17 10:36:12 UTC 2022-06-17 12:36:12 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.181° N, 5.235° E Uncertainty ± 1.4 km |
| Event ID | ROB 16390 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-17 15:36:20 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
- 4
- Epicentral distance
- 3.0 – 35.9km
- Mean velocity, P wave
- 6.4km/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: 4 measurements, root-mean-square deviation 0.47 s. S wave: 4 measurements, root-mean-square deviation 0.09 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)4 stations | |||||
| RCHRochefort | 3.0 | 191 | 10:36:12.76+0.59 s | 10:36:13.21+1.04 s | 0.45 |
| GESGesves | 25.0 | 335 | 10:36:16.90+4.73 s | 10:36:20.11+7.94 s | 3.21 |
| CLAClavier | 26.9 | 10 | 10:36:17.06+4.89 s | 10:36:20.64+8.47 s | 3.58 |
| MRDMaredsous | 35.9 | 292 | 10:36:17.44+5.27 s | 10:36:23.29+11.12 s | 5.85 |